Ethernet interface commands -- Common Ethernet interface commands -- alarm-detect

Use alarm-detect to set the action to take when an RDI, SD, or SF alarm occurs on a 10-GE interface.

Use undo alarm-detect to remove the configuration.

Syntax

alarm-detect { rdi | sd | sf } action link-down

undo alarm-detect { rdi | sd | sf }

Default

The device does not take any actions on the interface when an RDI, SD, or SF alarm occurs.

Views

10-GE interface view

Predefined user roles

network-admin

mdc-admin

Parameters

rdi: Specifies remote defect indication (RDI) alarms.

sd: Specifies signal degrade (SD) alarms.

sf: Specifies signal fail (SF) alarms.

action link-down: Places the interface in down state when the specified alarm is detected on the interface.

Usage guidelines

When the device receives multiplexer section remote defect indication (MS-RDI) signals from the remote end, an RDI alarm occurs.

When the bit error rate of incoming packets exceeds the SD or SF alarm threshold, an SD or SF alarm occurs. To set the SD or SF alarm threshold, use the threshold command.

Examples

# Configure Ten-GigabitEthernet 1/0/1 to go down when an SD alarm occurs.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] port-mode wan

[Sysname-Ten-GigabitEthernet1/0/1] alarm-detect sd action link-down

Related commands

port-mode

threshold

Ethernet interface commands -- Common Ethernet interface commands -- bandwidth

Use bandwidth to set the expected bandwidth of an interface.

Use undo bandwidth to restore the default.

Syntax

bandwidth bandwidth-value

undo bandwidth

Default

The expected bandwidth (in kbps) is the interface baud rate divided by 1000.

Views

Ethernet interface view

Ethernet subinterface view

Predefined user roles

network-admin

mdc-admin

Parameters

bandwidth-value: Specifies the expected bandwidth in the range of 1 to 400000000 kbps.

Usage guidelines

The expected bandwidth is an informational parameter used only by higher-layer protocols for calculation. You cannot adjust the actual bandwidth of an interface by using this command.

Examples

# Set the expected bandwidth of GigabitEthernet 1/0/1 to 1000 kbps.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] bandwidth 1000

# Set the expected bandwidth of GigabitEthernet 1/0/1.1 to 1000 kbps.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1] bandwidth 1000

Related commands

speed

Ethernet interface commands -- Common Ethernet interface commands -- broadcast-suppression

Use broadcast-suppression to enable broadcast suppression and set the broadcast suppression threshold.

Use undo broadcast-suppression to disable broadcast suppression.

Syntax

broadcast-suppression { ratio | pps max-pps | kbps max-kbps }

undo broadcast-suppression

Default

Ethernet interfaces do not suppress broadcast traffic.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

ratio: Sets the broadcast suppression threshold as a percentage of the interface bandwidth. The value range for this argument is 0 to 100. A smaller value means that less broadcast traffic is allowed to pass through.

pps max-pps: Specifies the maximum number of broadcast packets that the interface can forward per second. The value range for the max-pps argument (in pps) is 0 to 1.4881 ?the interface bandwidth.

kbps max-kbps: Specifies the maximum number of kilobits of broadcast traffic that the Ethernet interface can forward per second. The value range for this argument (in kbps) is 0 to the interface bandwidth.

Usage guidelines

The broadcast storm suppression features limits the size of broadcast traffic to a threshold on an interface. When the broadcast traffic on the interface exceeds this threshold, the system drops packets until the traffic drops below this threshold.

Both the storm-constrain command and the broadcast-suppression command can suppress broadcast storms on a port. The broadcast-suppression command uses the chip to physically suppress broadcast traffic. It has less influence on the device performance than the storm-constrain command, which uses software to suppress broadcast traffic.

For the traffic suppression result to be determined, do not configure both the storm-constrain broadcast command and the broadcast-suppression command on an interface.

The configured suppression threshold value in pps or kbps might be converted into a multiple of a step supported by the chip. As a result, the effective suppression threshold might be different from the configured one. To determine the suppression threshold that takes effect, see the prompts on the device.

Examples

# Set the broadcast suppression threshold to 10000 kbps on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] broadcast-suppression kbps 10000

The actual value is 10048 on port GigabitEthernet1/0/1 currently.

The output shows that the value that takes effect is 10048 kbps (157 times of 64), because the chip only supports step 64.

Related commands

multicast-suppression

unicast-suppression

Ethernet interface commands -- Common Ethernet interface commands -- combo enable

Use combo enable to activate the copper or fiber combo port of a combo interface.

Syntax

combo enable { copper | fiber }

Default

The copper combo port of a combo interface is activated.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

copper: Activates the copper combo port. In this case, use twisted pairs to connect the port.

fiber: Activates the fiber combo port. In this case, use optical fibers to connect the port.

Usage guidelines

A combo interface is a logical interface that physically contains one fiber combo port and one copper combo port on the device panel. The two ports share one forwarding interface. As a result, they cannot work simultaneously. When you activate either port, the other port is automatically disabled. You can select to activate the copper combo port or fiber combo port.

Before using this command, perform the following tasks according to the marks on the device panel:

· Determine the combo interfaces on your device.

· Identify the two physical interfaces that belong to each combo interface.

Examples

# Activate the copper combo port of combo interface GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] combo enable copper

# Activate the fiber combo port of combo interface GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] combo enable fiber

Ethernet interface commands -- Common Ethernet interface commands -- dampening

Use dampening to enable the device to dampen an interface when the interface is flapping.

Use undo dampening to restore the default.

Syntax

dampening [ half-life reuse suppress max-suppress-time ]

undo dampening

Default

Interface dampening is disabled on Ethernet interfaces.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

half-life: Specifies the amount of time after which a penalty is decreased, in the range of 1 to 120 seconds. The default value is 54 seconds.

reuse: Specifies the reuse threshold in the range of 200 to 20000. The default value is 750. The reuse threshold must be less than the suppression threshold.

suppress: Specifies the suppression threshold in the range of 200 to 20000. The default value is 2000.

max-suppress-time: Specifies the maximum amount of time the interface can be dampened, in the range of 1 to 255 seconds. The default value is 162 seconds (three times the half-life timer).

Usage guidelines

This command, the link-delay command, and the port link-flap protect enable command are mutually exclusive on an interface.

This command does not take effect on the administratively down events. When you execute the shutdown command, the penalty restores to 0, and the interface reports the down event to the higher layer protocols.

Do not enable the dampening function on an interface with RRPP, MSTP, or Smart Link enabled.

After an interface in down state is dampened, the interface state displayed through the display interface command, MIB, or Web is always down.

Examples

# Enable interface dampening on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] dampening

# Enable interface dampening on GigabitEthernet 1/0/1, and set the following parameters:

· Half life time to 2 seconds.

· Reuse value to 800.

· Suppression threshold to 3000.

· Maximum suppression interval to 5 seconds.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] dampening 2 800 3000 5

Related commands

display interface

link-delay

port link-flap protect enable

Ethernet interface commands -- Common Ethernet interface commands -- default

Use default to restore the default settings for an interface.

Syntax

default

Views

Ethernet interface view

Ethernet subinterface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

| CAUTION: The default command might interrupt ongoing network services. Make sure you are fully aware of the impacts of this command when you use it in a live network.

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This command might fail to restore the default settings for some commands because of command dependencies or system restrictions. You can use the display this command in interface view to identify these commands, and use their undo forms or follow the command reference to restore their default settings. If your restoration attempt still fails, follow the error message instructions to solve the problem.

Examples

# Restore the default settings for GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] default

# Restore the default settings for GigabitEthernet 1/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1] default

Ethernet interface commands -- Common Ethernet interface commands -- description

Use description to configure the description of an interface.

Use undo description to restore the default.

Syntax

description text

undo description

Default

The description of an interface is the interface name plus Interface (for example, GigabitEthernet1/0/1 Interface).

Views

Ethernet interface view

Ethernet subinterface view

Predefined user roles

network-admin

mdc-admin

Parameters

text: Specifies the interface description, a case-sensitive string of 1 to 255 characters.

Examples

# Set the description of GigabitEthernet 1/0/1 to lan-interface.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] description lan-interface

# Set the description of GigabitEthernet 1/0/1.1 to subinterface1/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1] description subinterface1/0/1.1

Ethernet interface commands -- Common Ethernet interface commands -- display counters

Use display counters to display interface traffic statistics.

Syntax

display counters { inbound | outbound } interface [ interface-type [ interface-number | interface-number.subnumber ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

inbound: Displays inbound traffic statistics.

outbound: Displays outbound traffic statistics.

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

interface-number.subnumber: Specifies a subinterface number. The interface-number argument is an interface number. The subnumber argument is the number of a subinterface created under the interface. The value range for the subnumber argument is 1 to 4094.

Usage guidelines

This command displays traffic statistics within a statistics polling interval specified by using the flow-interval command.

To clear the Ethernet interface traffic statistics, use the reset counters interface command.

If you do not specify an interface type, this command displays traffic statistics for all interfaces that have traffic counters.

If you specify an interface type but do not specify an interface number, this command displays traffic statistics for all interfaces of the specified type.

If you specify an interface type and number, this command displays traffic statistics for the specified interface.

Examples

# Display inbound traffic statistics for all interfaces.

<Sysname> display counters inbound interface

Interface Total (pkts) Broadcast (pkts) Multicast (pkts) Err (pkts)

GE1/0/1 100 100 0 0

GE1/0/2 Overflow Overflow Overflow Overflow

Overflow: More than 14 digits (7 digits for column "Err").

--: Not supported.

Table 1 Command output

Field | Description
Interface | Abbreviated interface name.
Total (pkts) | Total number of packets received or sent through the interface.
Broadcast (pkts) | Total number of broadcast packets received or sent through the interface. On an RPR physical port, all broadcast and multicast packets received or sent are displayed as multicast packets.
Multicast (pkts) | Total number of multicast packets received or sent through the interface. On an RPR physical port, all broadcast and multicast packets received or sent are displayed as multicast packets.
Err (pkts) | Total number of error packets received or sent through the interface.
Overflow: More than 14 digits (7 digits for column "Err") | The command displays Overflow when any of the following conditions exist: · The data length of an Err field value is greater than 7 decimal digits. · The data length of a non-Err field value is greater than 14 decimal digits.
--: Not supported | The statistical item is not supported.

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Related commands

flow-interval

reset counters interface

Ethernet interface commands -- Common Ethernet interface commands -- display counters rate

Use display counters rate to display traffic rate statistics for interfaces in up state for the most recent statistics polling interval.

Syntax

display counters rate { inbound | outbound } interface [ interface-type [ interface-number | interface-number.subnumber ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

inbound: Displays inbound traffic rate statistics.

outbound: Displays outbound traffic rate statistics.

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

interface-number.subnumber: Specifies a subinterface number. The interface-number argument is an interface number. The subnumber argument is the number of a subinterface created under the interface. The value range for the subnumber argument is 1 to 4094.

Usage guidelines

If you do not specify an interface type, this command displays traffic rate statistics for all up interfaces that have traffic counters.

If you specify an interface type but do not specify an interface number, this command displays traffic rate statistics for all up interfaces of the specified type.

If you specify an interface type and an interface, this command displays traffic rate statistics for the specified interface.

If an interface that you specify is always down for the most recent statistics polling interval, the system prompts that the interface does not support the command.

The statistics polling interval varies by device model:

· On a device that does not support the flow-interval command, the statistics polling interval is 5 minutes.

· On a device that supports the flow-interval command, you can use the flow-interval command to set the statistics polling interval.

Examples

# Display the inbound traffic rate statistics for all interfaces.

<Sysname> display counters rate inbound interface

Usage: Bandwidth utilization in percentage

Interface Usage (%) Total (pps) Broadcast (pps) Multicast (pps)

GE1/0/1 3 -- -- --

Overflow: More than 14 digits.

--: Not supported.

Table 2 Command output

Field | Description
Interface | Abbreviated interface name.
Usage (%) | Bandwidth usage (in percentage) of the interface for the last statistics polling interval.
Total (pkts/sec) | Average receiving or sending rate (in pps) for unicast packets for the last statistics polling interval.
Broadcast (pkts/sec) | Average receiving or sending rate (in pps) for broadcast packets for the last statistics polling interval. On an RPR physical port, all broadcast and multicast packets received or sent are displayed as multicast packets.
Multicast (pkts/sec) | Average receiving or sending rate (in pps) for multicast packets for the last statistics polling interval. On an RPR physical port, all broadcast and multicast packets received or sent are displayed as multicast packets.
Overflow: more than 14 decimal digits | The command displays Overflow if the data length of a statistical item is greater than 14 decimal digits.
--: not supported | The statistical item is not supported.

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Related commands

flow-interval

reset counters interface

Ethernet interface commands -- Common Ethernet interface commands -- display ethernet statistics

Use display ethernet statistics to display the Ethernet module statistics.

Syntax

Centralized devices:

display ethernet statistics

Distributed devices in standalone mode:Centralized IRF devices:

display ethernet statistics slot slot-number [ cpu cpu-number ]

Distributed devices in IRF mode:

display ethernet statistics chassis chassis-number slot slot-number [ cpu cpu-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

slot slot-number: Specifies a card by its slot number. (Distributed devices in standalone mode.)

slot slot-number: Specifies an IRF member device by its member ID. (Centralized IRF devices.) (IRF 3 incapable.)

slot slot-number: Specifies an IRF member device by its member ID or specifies a PEX by its virtual slot number. (Centralized IRF devices.) (IRF 3 capable.)

chassis chassis-number slot slot-number: Specifies a card on an IRF member device. The chassis-number argument represents the member ID of the IRF member device. The slot-number argument represents the slot number of the card. (Distributed devices in IRF mode.) (IRF 3 incapable.)

chassis chassis-number slot slot-number: Specifies a card on an IRF member device or specifies a PEX. The chassis-number argument represents the member ID of the IRF member device or the virtual chassis number of the PEX. The slot-number argument represents the slot number of the card or PEX. (Distributed devices in IRF mode.) (IRF 3 capable.)

cpu cpu-number: Specifies a CPU by its number. This option is available only if multiple CPUs are available on the specified slot.

Examples

# (Centralized devices.) Display the Ethernet module statistics.

<Sysname> display ethernet statistics

ETH receive packet statistics:

Totalnum : 10447 ETHIINum : 4459

SNAPNum : 0 RAWNum : 0

LLCNum : 0 UnknownNum : 0

ForwardNum : 4459 ARP : 0

MPLS : 0 ISIS : 0

ISIS2 : 0 IP : 0

IPV6 : 0

ETH receive error statistics:

NullPoint : 0 ErrIfindex : 0

ErrIfcb : 0 IfShut : 0

ErrAnalyse : 5988 ErrSrcMAC : 5988

ErrHdrLen : 0

ETH send packet statistics:

L3OutNum : 211 VLANOutNum : 0

FastOutNum : 155 L2OutNum : 0

ETH send error statistics:

MbufRelayNum : 0 NullMbuf : 0

ErrAdjFwd : 0 ErrPrepend : 0

ErrHdrLen : 0 ErrPad : 0

ErrQoSTrs : 0 ErrVLANTrs : 0

ErrEncap : 0 ErrTagVLAN : 0

IfShut : 0 IfErr : 0

# (Distributed devices in standalone mode.) (Centralized IRF devices.) Display the Ethernet module statistics for the specified slot.

<Sysname> display ethernet statistics slot 1

ETH receive packet statistics:

Totalnum : 10447 ETHIINum : 4459

SNAPNum : 0 RAWNum : 0

LLCNum : 0 UnknownNum : 0

ForwardNum : 4459 ARP : 0

MPLS : 0 ISIS : 0

ISIS2 : 0 IP : 0

IPV6 : 0

ETH receive error statistics:

NullPoint : 0 ErrIfindex : 0

ErrIfcb : 0 IfShut : 0

ErrAnalyse : 5988 ErrSrcMAC : 5988

ErrHdrLen : 0

ETH send packet statistics:

L3OutNum : 211 VLANOutNum : 0

FastOutNum : 155 L2OutNum : 0

ETH send error statistics:

MbufRelayNum : 0 NullMbuf : 0

ErrAdjFwd : 0 ErrPrepend : 0

ErrHdrLen : 0 ErrPad : 0

ErrQoSTrs : 0 ErrVLANTrs : 0

ErrEncap : 0 ErrTagVLAN : 0

IfShut : 0 IfErr : 0

Table 3 Output description

Field | Description
ETH receive packet statistics | Statistics about the Ethernet packets received by the Ethernet module: · Totalnum—Total number of received packets. · ETHIINum—Number of packets encapsulated by using Ethernet II. · SNAPNum—Number of packets encapsulated by using SNAP. · RAWNum—Number of packets encapsulated by using RAW. · LLCNum—Number of packets encapsulated by using LLC. · UnknownNum—Number of packets encapsulated by using unknown methods. · ForwardNum—Number of packets forwarded at Layer 2 or sent to the CPU. · ARP—Number of ARP packets. · MPLS—Number of MPLS packets. · ISIS—Number of IS-IS packets. · ISIS2—Number of large 802.3/802.2 frames encapsulated by using IS-IS. · IP—Number of IP packets. · IPv6—Number of IPv6 packets.
ETH receive error statistics | Statistics about the error Ethernet packets in the inbound direction on the Ethernet module. Errors might be included in packets or occur during the receiving process. The items include: · NullPoint—Number of packets that include null pointers. · ErrIfindex—Number of packets that include incorrect interface indexes. · ErrIfcb—Number of packets that include incorrect interface control blocks. · IfShut—Number of packets that are being received when the interface is shut down. · ErrAnalyse—Number of packets that include packet parsing errors. · ErrSrcMAC—Number of packets that include incorrect source MAC addresses. · ErrHdrLen—Number of packets that include header length errors.
ETH send packet statistics | Statistics about the Ethernet packets sent by the Ethernet module: · L3OutNum—Number of packets sent out of Layer 3 Ethernet interfaces. · VLANOutNum—Number of packets sent out of VLAN interfaces. · FastOutNum—Number of packets fast forwarded. · L2OutNum—Number of packets sent out of Layer 2 Ethernet interfaces. · MbufRelayNum—Number of packets transparently sent.
ETH send error statistics | Statistics about the error Ethernet packets in the outbound direction on the Ethernet module: · NullMbuf—Number of packets with null pointers. · ErrAdjFwd—Number of packets with adjacency table errors. · ErrPrepend—Number of packets with extension errors. · ErrHdrLen—Number of packets with header length errors. · ErrPad—Number of packets with padding errors. · ErrQoSTrs—Number of packets that failed to be sent by QoS. · ErrVLANTrs—Number of packets that failed to be sent in VLANs. · ErrEncap—Number of packets that failed to be sent due to link header encapsulation failures. · ErrTagVLAN—Number of packets that failed to be sent due to VLAN tag encapsulation failures. · IfShut—Number of packets that are being sent when the interface is shut down. · IfErr—Number of packets with incorrect outgoing interfaces.

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Related commands

reset ethernet statistics

Ethernet interface commands -- Common Ethernet interface commands -- display interface

Use display interface to display interface information.

Syntax

display interface [ interface-type [ interface-number | interface-number.subnumber ] ] [ brief [ description | down ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

interface-number.subnumber: Specifies a subinterface number. The interface-number argument is an interface number. The subnumber argument is the number of a subinterface created under the interface. The value range for the subnumber argument is 1 to 4094.

brief: Displays brief interface information. If you do not specify this keyword, the command displays detailed interface information.

description: Displays complete interface descriptions. If you do not specify this keyword, the command displays only the first 27 characters of each interface description.

down: Displays information about interfaces in down state and the causes. If you do not specify this keyword, the command displays information about interfaces in all states.

Usage guidelines

If you do not specify an interface type, this command displays information about all interfaces.

If you specify an interface type but do not specify an interface number, this command displays information about all interfaces of the specified type.

Examples

# Display information about Layer 3 interface GigabitEthernet 1/0/1.

<Sysname> display interface gigabitethernet 1/0/1

GigabitEthernet1/0/1

Current state: Administratively DOWN

Line protocol state: DOWN

Description: GigabitEthernet1/0/1 Interface

Bandwidth: 1000000 kbps

Maximum transmission unit: 1500

Allow jumbo frames to pass

Broadcast max-ratio: 100%

Multicast max-ratio: 100%

Unicast max-ratio: 100%

Internet protocol processing: Disabled

IP packet frame type: Ethernet II, hardware address: 3822-d666-bd0c

IPv6 packet frame type: Ethernet II, hardware address: 3822-d666-bd0c

Loopback is not set

Media type is twisted pair, port hardware type is 1000_BASE_T

Port priority: 2

Unknown-speed mode, unknown-duplex mode

Last link flapping: 6 hours 39 minutes 28 seconds

Last clearing of counters: Never

Peak input rate: 0 bytes/sec, at 2013-07-07 16:07:11

Peak output rate: 0 bytes/sec, at 2013-07-07 16:07:11

Last 300 second input: 0 packets/sec 0 bytes/sec 0%

Last 300 second output: 0 packets/sec 0 bytes/sec 0%

Input (total): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, - pauses

Input (normal): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

Input: 0 input errors, 0 runts, 0 giants, 0 throttles

0 CRC, 0 frame, 0 overruns, - aborts

- ignored, - parity errors

Output (total): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, - pauses

Output (normal): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

Output: 0 output errors, - underruns, - buffer failures

0 aborts, 0 deferred, 0 collisions, 0 late collisions

- lost carrier, - no carrier

# Display detailed information about Layer 2 interface GigabitEthernet 1/0/1.

<Sysname> display interface gigabitethernet 1/0/1

GigabitEthernet1/0/1

Current state: DOWN

Line protocol state: DOWN

IP packet frame type: Ethernet II, hardware address: 000c-2963-b767

Description: GigabitEthernet1/0/1 Interface

Bandwidth: 100000 kbps

Loopback is not set

Media type is twisted pair,port hardware type is 1000_BASE_T_AN_SFP

Unknown-speed mode, unknown-duplex mode

Link speed type is autonegotiation, link duplex type is autonegotiation

Flow-control is not enabled

Maximum frame length: 9216

Allow jumbo frame to pass

Broadcast max-ratio: 100%

Multicast max-ratio: 100%

Unicast max-ratio: 100%

PVID: 1

MDI type: Automdix

Port link-type: Access

Tagged VLANs: None

UnTagged VLANs: 1

Port priority: 2

Last link flapping: 6 hours 39 minutes 25 seconds

Last clearing of counters: 14:34:09 Tue 11/01/2011

Peak input rate: 0 bytes/sec, at 2013-07-17 22:06:19

Peak output rate: 0 bytes/sec, at 2013-07-17 22:06:19

Last 300 second input: 0 packets/sec 0 bytes/sec -%

Last 300 second output: 0 packets/sec 0 bytes/sec -%

Input (total): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

Input (normal): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

Input: 0 input errors, 0 runts, 0 giants, 0 throttles

0 CRC, 0 frame, 0 overruns, 0 aborts

0 ignored, 0 parity errors

Output (total): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

Output (normal): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

Output: 0 output errors, 0 underruns, 0 buffer failures

0 aborts, 0 deferred, 0 collisions, 0 late collisions

0 lost carrier, 0 no carrier

Table 4 Command output

Field | Description
Current state | Physical link state of the interface: · Administratively DOWN—The interface has been shut down by using the shutdown command. · DOWN—The interface is administratively up, but its physical state is down (possibly because no physical link exists or the link has failed). · DOWN ( Link-Aggregation interface down )—The aggregate interface to which the interface belongs has been shut down by using the shutdown command. · DOWN ( Tunnel-Bundle administratively down )—The tunnel bundle interface to which the interface belongs has been shut down by using the shutdown command. · Link-Flap DOWN—The interface has been shut down by the link flapping protection feature. · ETH-rddc Shutdown—The interface has been shut down by the Reth module. · IRF-link-down—The interface has been shut down by IRF. This state occurs when the IRF member device that contains the interface is detected to have lost the connectivity of all its IRF links in the MDC. · mac-address moving down—The interface has been shut down by the MAC address move suppression feature. · MAD ShutDown—The interface has been shut down by IRF MAD. This state occurs if the interface is on an IRF fabric placed in Recovery state after an IRF split. · OFP DOWN—The interface has been shut down by OpenFlow. · Storm-Constrain—The interface has been shut down because the storm control feature detected that unknown unicast traffic, multicast traffic, or broadcast traffic exceeded the upper threshold. · STP DOWN—The interface has been shut down by the BPDU guard feature. · UP—The interface is both administratively and physically up.
Line protocol state | Data link layer state of the interface. The state is determined through automatic parameter negotiation at the data link layer. · UP—The data link layer protocol is up. · UP (spoofing)—The data link layer protocol is up, but the link is an on-demand link or does not exist. This attribute is typical of null interfaces and loopback interfaces. · DOWN—The data link layer protocol is down. · DOWN (protocols)—The data link layer has been shut down by protocols included in the parentheses. Available protocols include: ?span style='font:7.0pt "Times New Roman"'> DLDP—Shuts down the data link layer when it detects that the link is unidirectional. ?span style='font:7.0pt "Times New Roman"'> OAM—Shuts down the data link layer when it detects a remote link failure. ?span style='font:7.0pt "Times New Roman"'> LAGG—Shuts down the data link layer when it detects that the aggregate interface does not have Selected ports. ?span style='font:7.0pt "Times New Roman"'> BFD—Shuts down the data link layer when it detects a link failure. ?span style='font:7.0pt "Times New Roman"'> MACSEC—Shuts down the data link layer when it fails to negotiate the encryption parameters.
Bandwidth | Expected bandwidth of the interface.
Maximum transmission unit | MTU of the interface.
Internet protocol processing: Disabled | The interface is not assigned an IP address and cannot process IP packets.
Internet address | IP address of the interface. The primary attribute indicates that the address is the primary IP address.
IP packet frame type | IPv4 packet framing format.
hardware address | MAC address of the interface.
IPv6 packet frame type | IPv6 packet framing format.
Port priority | Port priority of the interface.
Loopback is set internal | An internal loopback test is running on the interface. This field depends on your configuration.
Loopback is set external | An external loopback test is running on the interface. This field depends on your configuration.
Loopback is not set | No loopback test is running on the interface. This field depends on your configuration.
10Mbps-speed mode | The interface is operating at 10 Mbps. This field depends on your configuration and the link parameter negotiation result.
100Mbps-speed mode | The interface is operating at 100 Mbps. This field depends on your configuration and the link parameter negotiation result.
1000Mbps-speed mode | The interface is operating at 1000 Mbps. This field depends on your configuration and the link parameter negotiation result.
10Gbps-speed mode | The interface is operating at 10 Gbps. This field depends on your configuration and the link parameter negotiation result.
25Gbps-speed mode | The interface is operating at 25 Gbps. This field depends on your configuration and the link parameter negotiation result.
40Gbps-speed mode | The interface is operating at 40 Gbps. This field depends on your configuration and the link parameter negotiation result.
100Gbps-speed mode | The interface is operating at 100 Gbps. This field depends on your configuration and the link parameter negotiation result.
Unknown-speed mode | The speed of the interface is unknown because the speed negotiation fails or the interface is physically disconnected.
half-duplex mode | The interface is operating in half duplex mode. This field depends on your configuration and the link parameter negotiation result.
full-duplex mode | The interface is operating in full duplex mode. This field depends on your configuration and the link parameter negotiation result.
unknown-duplex mode | The duplex mode of the interface is unknown because the duplex mode negotiation fails or the interface is physically disconnected.
Link speed type is autonegotiation | The interface is configured with the speed auto command.
Link speed type is force link | The interface is manually configured with a speed (for example, 1000 Mbps) by using the speed command.
link duplex type is autonegotiation | The interface is configured with the duplex auto command.
link duplex type is force link | The interface is manually configured with a duplex mode (for example, half or full) by using the duplex command.
Flow-control is not enabled | Generic flow control is disabled on the interface. This field depends on your configuration and the link parameter negotiation result.
Maximum frame length | Maximum length of Ethernet frames allowed to pass through the interface.
Allow jumbo frame to pass | The interface allows jumbo frames to pass through.
Broadcast max- | Broadcast storm suppression threshold in ratio, pps, or kbps. The unit of the threshold depends on your configuration.
Multicast max- | Multicast storm suppression threshold in ratio, pps, or kbps. The unit of the threshold depends on your configuration.
Unicast max- | Unknown unicast storm suppression threshold in ratio, pps, or kbps. The unit of the threshold depends on your configuration.
PVID | Port VLAN ID (PVID) of the interface.
MDI type | MDIX mode of the interface: · automdix. · mdi. · mdix.
Port link-type | Link type of the interface: · access. · trunk. · hybrid.
Tagged VLANs | VLANs for which the interface sends packets without removing VLAN tags.
Untagged VLANs | VLANs for which the interface sends packets after removing VLAN tags.
VLAN Passing | VLANs whose packets can be forwarded by the port. The VLANs must have been created.
VLAN permitted | VLANs whose packets are permitted by the port.
Trunk port encapsulation | Encapsulation protocol type for the trunk port.
Last link flapping | The amount of time that has elapsed since the most recent physical state change of the interface. This field displays Never if the interface has been physically down since device startup.
Last clearing of counters | Time when the reset counters interface command was last used to clear the interface statistics. This field displays Never if the reset counters interface command has never been used on the interface since device startup.
Last 300 second input: 0 packets/sec 0 bytes/sec 0% Last 300 second output: 0 packets/sec 0 bytes/sec 0% | Average inbound or outbound traffic rate (in pps and Bps) in the last 300 seconds, and the ratio of the actual rate to the interface bandwidth. A hyphen (-) indicates that the statistical item is not supported.
Input(total): 0 packets, 0 bytes 0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses | The two fields on the first line represent the inbound traffic statistics (in packets and bytes) for the interface. All inbound normal packets, abnormal packets, and normal pause frames were counted. The four fields on the second line represent: · Number of inbound unicast packets. · Number of inbound broadcasts. · Number of inbound multicasts. · Number of inbound pause frames. A hyphen (-) indicates that the statistical item is not supported.
Input(normal): 0 packets, 0 bytes 0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses | The two fields on the first line represent the inbound normal traffic and pause frame statistics (in packets and bytes) for the interface. The four fields on the second line represent: · Number of inbound normal unicast packets. · Number of inbound normal broadcasts. · Number of inbound normal multicasts. · Number of inbound normal pause frames. A hyphen (-) indicates that the statistical item is not supported.
input errors | Statistics of incoming error packets.
runts | Number of inbound frames meeting the following conditions: · Shorter than 64 bytes. · In correct format. · Containing valid CRCs.
giants | Number of inbound giants. Giants refer to frames larger than the maximum frame length supported on the interface. For an Ethernet interface that does not permit jumbo frames, the maximum frame length is as follows: · 1518 bytes (without VLAN tags). · 1522 bytes (with VLAN tags). For an Ethernet interface that permits jumbo frames, the maximum Ethernet frame length is set when you configure jumbo frame support on the interface.
throttles | Number of inbound frames that had a non-integer number of bytes.
CRC | Total number of inbound frames that had a normal length, but contained CRC errors.
frame | Total number of inbound frames that contained CRC errors and a non-integer number of bytes.
overruns | Number of packets dropped because the input rate of the port exceeded the queuing capability.
aborts | Total number of illegal inbound packets: · Fragment frames—CRC error frames shorter than 64 bytes. The length (in bytes) can be an integral or non-integral value. · Jabber frames—CRC error frames greater than the maximum frame length supported on the Ethernet interface (with an integral or non-integral length). ?span style='font:7.0pt "Times New Roman"'> For an Ethernet interface that does not permit jumbo frames, the maximum frame length is 1518 bytes (without VLAN tags) or 1522 bytes (with VLAN tags). ?span style='font:7.0pt "Times New Roman"'> For an Ethernet interface that permits jumbo frames, the maximum Ethernet frame length is set when you configure jumbo frame support on the interface. · Symbol error frames—Frames that contained a minimum of one undefined symbol. · Unknown operation code frames—Non-pause MAC control frames. · Length error frames—Frames whose 802.3 length fields did not match the actual frame length (46 to 1500 bytes).
ignored | Number of inbound frames dropped because the receiving buffer of the port ran low.
parity errors | Total number of frames with parity errors.
Output(total): 0 packets, 0 bytes 0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses | The two fields on the first line represent the outbound traffic statistics (in packets and bytes) for the interface. All outbound normal packets, abnormal packets, and normal pause frames were counted. The four fields on the second line represent: · Number of outbound unicast packets. · Number of outbound broadcasts. · Number of outbound multicasts. · Number of outbound pause frames. A hyphen (-) indicates that the statistical item is not supported.
Output(normal): 0 packets, 0 bytes 0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses | The two fields on the first line represent the outbound normal traffic and pause frame statistics (in packets and bytes) for the interface. The four fields on the second line represent: · Number of outbound normal unicast packets. · Number of outbound normal broadcasts. · Number of outbound normal multicasts. · Number of outbound normal pause frames. A hyphen (-) indicates that the statistical item is not supported.
output errors | Number of outbound packets with errors.
underruns | Number of packets dropped because the output rate of the interface exceeded the output queuing capability. This is a low-probability hardware anomaly.
buffer failures | Number of packets dropped because the transmitting buffer of the interface ran low.
aborts | Number of packets that failed to be transmitted, for example, because of Ethernet collisions.
deferred | Number of frames that the interface deferred to transmit because of detected collisions.
collisions | Number of frames that the interface stopped transmitting because Ethernet collisions were detected during transmission.
late collisions | Number of frames that the interface deferred to transmit after transmitting their first 512 bits because of detected collisions.
lost carrier | Number of carrier losses during transmission. This counter increases by one when a carrier is lost, and applies to serial WAN interfaces.
no carrier | Number of times that the port failed to detect the carrier when attempting to send frames. This counter increases by one when a port failed to detect the carrier, and applies to serial WAN interfaces.
Peak input rate | Peak rate of inbound traffic in Bps, and the time when the peak inbound traffic rate occurred.
Peak output rate | Peak rate of outbound traffic in Bps, and the time when the peak outbound traffic rate occurred.

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# Display brief information about all interfaces.

<Sysname> display interface brief

Brief information on interfaces in route mode:

Link: ADM - administratively down; Stby - standby

Protocol: (s) – spoofing

Interface Link Protocol Primary IP Description

GE1/0/1 DOWN DOWN --

Loop0 UP UP(s) 2.2.2.9

NULL0 UP UP(s) --

Vlan1 UP DOWN --

Vlan999 UP UP 192.168.1.42

Brief information on interfaces in bridge mode:

Link: ADM - administratively down; Stby - standby

Speed: (a) - auto

Duplex: (a)/A - auto; H - half; F - full

Type: A - access; T - trunk; H - hybrid

Interface Link Speed Duplex Type PVID Description

GE1/0/2 DOWN auto A A 1

GE1/0/3 UP 100M(a) F(a) A 1 aaaaaaaaaaaaaaaaaaaaaaaaaaa

# Display brief information about GigabitEthernet 1/0/3, including the complete description of the interface.

<Sysname> display interface gigabitethernet 1/0/3 brief description

Brief information on interfaces in bridge mode:

Link: ADM - administratively down; Stby - standby

Speed: (a) - auto

Duplex: (a)/A - auto; H - half; F - full

Type: A - access; T - trunk; H - hybrid

Interface Link Speed Duplex Type PVID Description

GE1/0/3 UP 100M(a) F(a) A 1 aaaaaaaaaaaaaaaaaaaaaaaaaaaaa

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

# Display information about interfaces in DOWN state and the causes.

<Sysname> display interface brief down

Brief information on interfaces in route mode:

Link: ADM - administratively down; Stby - standby

Interface Link Cause

GE1/0/1 DOWN Not connected

Vlan2 DOWN Not connected

Brief information on interfaces in bridge mode:

Link: ADM - administratively down; Stby - standby

Interface Link Cause

GE1/0/2 DOWN Not connected

Table 5 Command output

Field | Description
Brief information on interfaces in route mode: | Brief information about Layer 3 interfaces.
Interface | Interface name.
Link | Physical link state of the interface: · UP—The interface is physically up. · DOWN—The interface is physically down. · ADM—The interface has been shut down by using the shutdown command. To restore the physical state of the interface, use the undo shutdown command. · Stby—The interface is a backup interface in standby state. To see the primary interface, use the display interface-backup state command.
Protocol | Data link layer protocol state of the interface: · UP—The data link layer protocol of the interface is up. · DOWN—The data link layer protocol of the interface is down. · UP(s)—The data link layer protocol of the interface is up, but the link is an on-demand link or does not exist. The (s) attribute represents the spoofing flag. This value is typical of null interfaces and loopback interfaces.
Primary IP | Primary IP address of the interface. This field displays two hyphens (--) if the interface does not have an IP address.
Description | Description of the interface.
Brief information of interfaces in bridge mode: | Brief information about Layer 2 interfaces.
Type: A - access; T - trunk; H – hybrid | Link type options for interfaces.
Speed | Speed of the interface, in bps. This field displays the (a) flag next to the speed if the speed is automatically negotiated. This field displays auto if the interface is configured to autonegotiate its speed but the autonegotiation has not started.
Duplex | Duplex mode of the interface: · A—Autonegotiation. The interface is configured to autonegotiate its duplex mode but the autonegotiation has not started. · F—Full duplex. · F(a)—Autonegotiated full duplex. · H—Half duplex. · H(a)—Autonegotiated half duplex.
Type | Link type of the interface: · A—Access. · H—Hybrid. · T—Trunk.
PVID | Port VLAN ID.
Cause | Cause for the physical link state of an interface to be DOWN: · Administratively—The interface has been manually shut down by using the shutdown command. To restore the physical state of the interface, use the undo shutdown command. · DOWN ( Link-Aggregation interface down )—The interface is a member port of an aggregate interface, and the aggregate interface is down. · DOWN (Loopback detection down)—The loopback detection module has detected loops. · DOWN ( Monitor-Link uplink down )—The monitor link module has detected that the uplink is down. · IRF-link-down—The IRF member device that contains the interface has lost the connectivity of all its IRF links in the MDC. · MAD ShutDown—The interface is on an IRF fabric placed by IRF MAD in Recovery state after an IRF split. · Not connected—No physical connection exists (possibly because the network cable is disconnected or faulty). · Storm-Constrain—The storm control feature has detected that unknown unicast traffic, multicast traffic, or broadcast traffic exceeded the upper threshold. · STP DOWN—The interface has been shut down by the BPDU guard feature. · Port Security Disabled—The interface has been shut down by the intrusion detection mechanism because the interface received illegal packets. · OFP DOWN—The interface has been shut down by OpenFlow. · Standby—The interface is a backup interface in standby state.

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Related commands

reset counters interface

Ethernet interface commands -- Common Ethernet interface commands -- display link-flap protection

Use display link-flap protection to display information about link flapping protection on an interface.

Syntax

display link-flap protection [ interface interface-type [ interface-number ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface-type: Specifies an interface type. If you do not specify an interface type, the command displays information about link flapping protection on all interfaces.

interface-number: Specifies an interface number. If you do not specify an interface number, the command displays information about link flapping protection on all interfaces of the specified type.

Examples

# Display information about link flapping protection on an interface.

<Sysname> display link-flap protection

Link-flap protection: Enabled

Interface Link-flap Status Interval Threshold

GE1/0/1 Enabled Down 10 5

GE1/0/2 Disabled N/A -- --

Table 6 Command output

Field | Description
Link-flap protection | Status of link flapping protection on all interfaces: · Enable d—Link flapping protection is enabled on all interfaces. · Disable d—Link flapping protection is disabled on all interfaces.
Link-flap | Status of link flapping protection on an interface: · Enabled—Link flapping protection is enabled on an interface. · Disabled—Link flapping protection is disabled on an interface.
Status | Status of an interface: · Down—The interface has been shut down by the link flapping protection feature. · N/A—The interface status is not affected by the link flapping protection feature.
Interval | Link flapping detection interval for an interface.
Threshold | Link flapping detection threshold for an interface.

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Related commands

link-flap protect enable

port link-flap protect enable

Ethernet interface commands -- Common Ethernet interface commands -- display packet-drop

Use display packet-drop to display information about packets dropped on an interface.

Syntax

display packet-drop { interface [ interface-type [ interface-number | interface-number.subnumber ] ] | summary }

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

interface-number.subnumber: Specifies a subinterface number. The interface-number argument is an interface number. The subnumber argument is the number of a subinterface created under the interface. The value range for the subnumber argument is 1 to 4094.

summary: Displays the summary of dropped packets on all interfaces.

Usage guidelines

If you do not specify an interface type, this command displays information about dropped packets on all interfaces on the device.

If you specify an interface type but do not specify an interface number, this command displays information about dropped packets on all interfaces of the specified type.

Examples

# Display information about dropped packets on GigabitEthernet 1/0/1.

<Sysname> display packet-drop interface gigabitethernet 1/0/1

GigabitEthernet1/0/1:

Packets dropped due to full GBP or insufficient bandwidth: 301

Packets dropped due to Fast Filter Processor (FFP): 261

Packets dropped due to STP non-forwarding state: 321

Packets dropped due to rate-limit: 143

Packets dropped due to broadcast-suppression: 301

Packets dropped due to unicast-suppression: 215

Packets dropped due to multicast-suppression: 241

Packets dropped due to Tx packet aging: 246

Packets dropped due to insufficient data buffer. Input dropped: 0 Output dropped:0

# Display the summary of dropped packets on all interfaces.

<Sysname> display packet-drop summary

All interfaces:

Packets dropped due to full GBP or insufficient bandwidth: 301

Packets dropped due to Fast Filter Processor (FFP): 261

Packets dropped due to STP non-forwarding state: 321

Packets dropped due to rate-limit: 143

Packets dropped due to broadcast-suppression: 301

Packets dropped due to unicast-suppression: 215

Packets dropped due to multicast-suppression: 241

Packets dropped due to Tx packet aging: 246

Packets dropped due to insufficient data buffer. Input dropped: 0 Output dropped:0

Table 7 Command output

Field | Description
Packets dropped due to full GBP or insufficient bandwidth | Packets that are dropped because the buffer is used up or the bandwidth is insufficient.
Packets dropped due to Fast Filter Processor (FFP) | Packets that are filtered out.
Packets dropped due to STP non-forwarding state | Packets that are dropped because STP is in the non-forwarding state.
Packets dropped due to rate-limit | Packets that are dropped due to the rate limit set on the device.
Packets dropped due to broadcast-suppression | Packets that are dropped due to broadcast suppression.
Packets dropped due to unicast-suppression | Packets that are dropped due to unknown unicast suppression.
Packets dropped due to multicast-suppression | Packets that are dropped due to multicast suppression.
Packets dropped due to Tx packet aging | Outbound packets that are timed out.
Packets dropped due to insufficient data buffer. Input dropped: 0 Output dropped:0 | Inbound and outbound packets that are dropped due to insufficient data buffer.

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Ethernet interface commands -- Common Ethernet interface commands -- display priority-flow-control

Use display priority-flow-control to display the PFC information for an interface.

Syntax

display priority-flow-control interface [ interface-type [ interface-number ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface-type: Specifies an interface type. If you do not specify an interface type, the command displays the PFC information for all Ethernet interfaces.

interface-number: Specifies an interface number. If you do not specify an interface number, the command displays the PFC information for all Ethernet interfaces of the specified type.

Examples

# Display the PFC information for all Ethernet interfaces.

<Sysname> display priority-flow-control interface

Interface AdminMode OperMode Dot1pList Prio Recv Send

--------------------------------------------------------------------------------

GE1/0/1 Auto Disabled 0,2-3,5-6 0 178 43

Table 8 Command output

Field | Description
Interface | Abbreviated name of the interface.
AdminMode | Administrative PFC status: · Disabled—PFC is disabled for the interface. · Auto—The interface is configured to autonegotiate the PFC status with the remote end. · Enabled—PFC is enabled for the interface.
OperMode | Operative PFC status: · Disabled—PFC is disabled. · Enabled—PFC is enabled.
Dot1pList | 802.1p priorities that are enabled with PFC. 802.1p priority values 0 through 7 are available.
Prio | An 802.1p priority is displayed only when the 802.1p priority is enabled with PFC and the interface has received or sent packets with the 802.1p priority.
Recv | Number of received frames.
Send | Number of sent frames.

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Related commands

priority-flow-control

priority-flow-control no-drop dot1p

Ethernet interface commands -- Common Ethernet interface commands -- duplex

Use duplex to set the duplex mode for an Ethernet interface.

Use undo duplex to restore the default.

Syntax

duplex { auto | full | half }

undo duplex

Default

10-GE and 40-GE interfaces operate in full duplex mode, and all other types of Ethernet interfaces operate in autonegotiation mode.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

auto: Configures the interface to autonegotiate the duplex mode with the peer.

full: Configures the interface to operate in full duplex mode. In this mode, the interface can receive and transmit packets simultaneously.

half: Configures the interface to operate in half duplex mode. In this mode, the interface can only receive or transmit packets at a given time.

Examples

# Configure GigabitEthernet 1/0/1 to operate in full duplex mode.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] duplex full

Ethernet interface commands -- Common Ethernet interface commands -- eee enable

Use eee enable to enable Energy Efficient Ethernet (EEE) on an interface.

Use undo eee enable to disable EEE on an interface.

Syntax

eee enable

undo eee enable

Default

EEE is disabled.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

With EEE enabled, a link-up interface enters low power state if it has not received any packet for a period of time. The time period depends on the chip specifications and is not configurable. When a packet arrives later, the interface restores to the normal state.

Examples

# Enable EEE on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] eee enable

Ethernet interface commands -- Common Ethernet interface commands -- flag sdh

| IMPORTANT: This command is effective only when the 10-GE interface is operating in WAN mode.

‌

Use flag sdh to set the value for the overhead byte J0 or J1 in SDH frames on a 10-GE interface.

Use undo flag sdh to restore the default.

Syntax

flag { j0 | j1 } sdh value

undo flag { j0 | j1 } sdh

Default

The default settings for this command vary by device model.

Views

10-GE interface view

Predefined user roles

network-admin

mdc-admin

Parameters

j0: Specifies the Regenerator Section Trace byte J0.

j1: Specifies the Path Trace byte J1.

value: Specifies the value for the J0 or J1 byte, a string of 1 to 15 characters.

Examples

# Set the value of the J0 byte in SDH frames to Sysname on Ten-GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] port-mode wan

[Sysname-Ten-GigabitEthernet1/0/1] flag j0 sdh Sysname

Related commands

port-mode

Ethernet interface commands -- Common Ethernet interface commands -- flow-control

Use flow-control to enable TxRx-mode generic flow control on an Ethernet interface.

Use undo flow-control to disable TxRx-mode generic flow control on the Ethernet interface.

Syntax

flow-control

undo flow-control

Default

TxRx-mode generic flow control is disabled on an Ethernet interface.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

With TxRx-mode generic flow control configured, an interface can both send and receive flow control frames:

· When congested, the interface sends a flow control frame to its peer.

· Upon receiving a flow control frame from the peer, the interface suspends sending packets.

To implement flow control on a link, enable generic flow control at both ends of the link.

Examples

# Enable TxRx-mode generic flow control on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] flow-control

Ethernet interface commands -- Common Ethernet interface commands -- flow-control receive enable

Use flow-control receive enable to enable Rx-mode generic flow control on an Ethernet port.

Use undo flow-control to disable Rx-mode generic flow control on an Ethernet port.

Syntax

flow-control receive enable

undo flow-control

Default

Rx-mode generic flow control is disabled on Ethernet interfaces.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

With Rx-mode flow control enabled, an interface can receive but cannot send flow control frames.

· When the interface receives a flow control frame from its peer, it suspends sending packets to the peer.

· When traffic congestion occurs on the interface, it cannot send flow control frames to the peer.

To handle unidirectional traffic congestion on a link, configure the flow-control receive enable command at one end, and the flow-control command at the other. To enable both ends of the link to handle traffic congestion, configure the flow-control command at both ends.

Examples

# Enable Rx-mode generic flow control on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-gigabitethernet 1/0/1] flow-control receive enable

Related commands

flow-control

Ethernet interface commands -- Common Ethernet interface commands -- flow-interval

Use flow-interval to set the statistics polling interval.

Use undo flow-interval to restore the default.

Syntax

flow-interval interval

undo flow-interval

Default

The default statistics polling interval varies by device model.

Views

System view

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

interval: Sets the statistics polling interval in seconds. The interval is in the range of 5 to 300 and must be a multiple of 5.

Usage guidelines

The statistics polling interval configured in system view takes effect on all Ethernet interface.

The statistics polling interval configured in Ethernet interface view takes effect only on the current interface.

This command is not applicable to interfaces assigned to contexts in shared mode.

Examples

# Set the statistics polling interval to 100 seconds on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] flow-interval 100

Ethernet interface commands -- Common Ethernet interface commands -- interface

Use interface to enter interface view, create a subinterface and enter its view, or enter the view of an existing subinterface.

Syntax

interface interface-type { interface-number | interface-number.subnumber }

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

interface-number.subnumber: Specifies a subinterface number. The interface-number argument is an interface number. The subnumber argument is the number of a subinterface created under the interface. The value range for the subnumber argument is 1 to 4094.

Examples

# Enter the view of GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1]

# Create Ethernet subinterface GigabitEthernet 1/0/1.1 and enter its view.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1]

Ethernet interface commands -- Common Ethernet interface commands -- jumboframe enable

Use jumboframe enable to allow jumbo frames within the specified length to pass through.

Use undo jumboframe enable to prevent jumbo frames from passing through.

Syntax

jumboframe enable [ size ]

undo jumboframe enable [ size ]

Default

The device allows jumbo frames within a specific length to pass through. The length of jumbo frames that are allowed to pass through varies by device model.

Views

Layer 2 Ethernet interface view

Layer 3 Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

size: Sets the maximum length (in bytes) of Ethernet frames that are allowed to pass through. The value range for this argument varies by device model.

Usage guidelines

If you execute this command multiple times, the most recent configuration takes effect.

If you execute the undo jumboframe enable command with the value for the size argument specified by using the jumboframe enable command, the command restores the default.

Examples

# Allow jumbo frames to pass through GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] jumboframe enable

Ethernet interface commands -- Common Ethernet interface commands -- link-delay

Use link-delay to set the physical state change suppression interval on an Ethernet interface.

Use undo link-delay to restore the default.

Syntax

link-delay [ msec ] delay-time [ mode { up | updown } ]

undo link-delay [ msec ] delay-time [ mode { up | updown } ]

Default

The default setting varies by device model.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

msec: Enables the physical state change suppression interval to be accurate to milliseconds. If you do not specify this keyword, the suppression interval is accurate to seconds.

delay-time: Sets the physical state change suppression interval on the Ethernet interface. A value of 0 means that physical state changes are immediately reported to the CPU and are not suppressed.

· If you do not specify the msec keyword, the value range is 0 to 30 seconds.

· If you specify the msec keyword, the value range is 0 to 10000 milliseconds, and the value must be a multiple of 100.

mode up: Suppresses the link-up events.

mode updown: Suppresses both the link-up and link-down events.

Usage guidelines

You can configure this feature to suppress only link-down events, only link-up events, or both. If an event of the specified type still exists when the suppression interval expires, the system reports the event.

When you configure this feature, follow these guidelines:

· To suppress only link-down events, configure the link-delay [ msec ] delay-time command.

· To suppress only link-up events, configure the link-delay [ msec ] delay-time mode up command.

· To suppress both link-down and link-up events, configure the link-delay [ msec ] delay-time mode updown command.

On an interface, you can configure different suppression intervals for link-up and link-down events. If you configure the link-delay command multiple times for link-up or link-down events, the most recent configuration takes effect.

Do not configure this command on an interface that has RRPP, spanning tree protocols, or Smart Link enabled.

This command, the dampening command, and the port link-flap protect enable command are mutually exclusive on an Ethernet interface.

Examples

# Set the link-down event suppression interval to 8 seconds on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] link-delay 8

# Set the link-up event suppression interval to 800 milliseconds on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] link-delay msec 800 mode up

Related commands

dampening

port link-flap protect enable

Ethernet interface commands -- Common Ethernet interface commands -- link-flap protect enable

Use link-flap protect enable to enable link flapping protection on all interfaces.

Use undo link-flap protect enable to disable link flapping protection on all interfaces.

Syntax

link-flap protect enable

undo link-flap protect enable

Default

Link flapping protection is disabled on all interfaces.

Views

System view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Link flapping on any interface changes network topology and increases the system overhead. For example, in an active/standby link scenario, when the interface status on the active link changes between UP and DOWN, traffic switches between active and standby links. To solve this problem, execute this command.

With link flapping protection enabled on an interface, when the interface goes down, the system enables link flapping detection on the interface. During the link flapping detection interval, if the number of detected flaps reaches or exceeds the link flapping detection threshold, the system shuts down the interface.

Link flapping protection takes effect only when it is enabled in both the system view and interface view.

Examples

# Enable link flapping protection on all interfaces.

<Sysname> system-view

[Sysname] link-flap protect enable

Related commands

port link-flap protect enable

Ethernet interface commands -- Common Ethernet interface commands -- loopback

| CAUTION: After you enable loopback testing on an Ethernet interface, the interface does not forward data traffic.

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Use loopback to enable loopback testing on an Ethernet interface.

Use undo loopback to disable loopback testing on an Ethernet interface.

Syntax

loopback { external | internal }

undo loopback

Default

Loopback testing is disabled on an Ethernet interface.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

external: Enables external loopback testing on the Ethernet interface.

internal: Enables internal loopback testing on the Ethernet interface.

Usage guidelines

After you enable loopback testing on an Ethernet interface, the Ethernet interface switches to full duplex mode. After you disable loopback testing, the Ethernet interface restores to its duplex setting.

The shutdown, port up-mode, and loopback commands are mutually exclusive.

Examples

# Enable internal loopback testing on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] loopback internal

Ethernet interface commands -- Common Ethernet interface commands -- multicast-suppression

Use multicast-suppression to enable multicast storm suppression and set the multicast storm suppression threshold.

Use undo multicast-suppression to disable multicast storm suppression.

Syntax

multicast-suppression { ratio | pps max-pps | kbps max-kbps } [ unknown ]

undo multicast-suppression

Default

Ethernet interfaces do not suppress multicast traffic.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

ratio: Sets the multicast suppression threshold as a percentage of the interface bandwidth. The value range for this argument (in percentage) is 0 to 100. A smaller value means that less multicast traffic is allowed to pass through.

pps max-pps: Specifies the maximum number of multicast packets that the interface can forward per second. The value range for the max-pps argument (in pps) is 0 to 1.4881 ?the interface bandwidth.

kbps max-kbps: Specifies the maximum number of kilobits of multicast traffic that the Ethernet interface can forward per second. The value range for this argument (in kbps) is 0 to the interface bandwidth.

unknown: Enables multicast storm suppression only on unknown packets. If you do not specify this keyword, packets suppressed by this feature depend on the device model.

Usage guidelines

The multicast storm suppression feature limits the size of multicast traffic to a threshold on an interface. When the multicast traffic on the interface exceeds this threshold, the system drops packets until the traffic drops below this threshold.

Both the storm-constrain command and the multicast-suppression command can suppress multicast storms on a port. The multicast-suppression command uses the chip to physically suppress multicast traffic. It has less influence on the device performance than the storm-constrain command, which uses software to suppress multicast traffic.

For the traffic suppression result to be determined, do not configure both the storm-constrain multicast command and the multicast-suppression command on an interface.

The configured suppression threshold value in pps or kbps might be converted into a multiple of a step supported by the chip. As a result, the effective suppression threshold might be different from the configured one. To determine the suppression threshold that takes effect, see the prompts on the device.

Examples

# Set the multicast storm suppression threshold to 10000 kbps on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] multicast-suppression kbps 10000

The actual value is 10048 on port GigabitEthernet1/0/1 currently.

The output shows that the value that takes effect is 10048 kbps (157 times of 64), because the chip only supports step 64.

Related commands

broadcast-suppression

unicast-suppression

Ethernet interface commands -- Common Ethernet interface commands -- port auto-power-down

Use port auto-power-down to enable auto power-down on an Ethernet interface.

Use undo port auto-power-down to disable auto power-down on an Ethernet interface.

Syntax

port auto-power-down

undo port auto-power-down

Default

Auto power-down is disabled on Ethernet interfaces.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

When an interface with auto power-down enabled has been down for a specific period of time, both of the following events occur:

· The device automatically stops supplying power to the interface.

· The interface enters the power save mode.

The time period depends on the chip specifications and is not configurable.

When the interface comes up, both of the following events occur:

· The device automatically restores the power supply to the interface.

· The interface restores to its normal state.

Examples

# Enable auto power-down on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] port auto-power-down

Ethernet interface commands -- Common Ethernet interface commands -- port link-flap protect enable

Use port link-flap protect enable to enable link flapping protection on an interface.

Use undo port link-flap protect enable to disable link flapping protection on an interface.

Syntax

port link-flap protect enable [ interval interval | threshold threshold ] *

undo port link-flap protect enable [ interval | threshold ]

Default

Link flapping protection is disabled on an interface.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

interval: Specifies the link flapping detection interval in seconds. The value range for this argument is 10 to 60. The default value for this argument is 10.

threshold: Specifies the link flapping detection threshold in the range of 5 to 10. The default value for this argument is 5.

Usage guidelines

Link flapping protection takes effect only when it is enabled in both the system view and interface view.

If you do not specify the interval interval or threshold threshold option when you execute the port link-flap protect enable command, the command uses the default settings.

If you specify the interval or threshold keyword when you execute the undo port link-flap protect enable command, the command restores the default setting for the keyword.

With link flapping protection enabled on an interface, when the interface goes down, the system enables link flapping detection on the interface. During the link flapping detection interval, if the number of detected flaps reaches or exceeds the link flapping detection threshold, the system shuts down the interface.

To bring up an interface that has been shut down by link flapping protection, execute the undo shutdown command.

This command, the dampening command, and the link-delay command are mutually exclusive on an Ethernet interface.

Examples

# Enable link flapping protection on an interface. Set the link flapping detection interval to 10 seconds, and set the link flapping detection threshold to 5.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet 1/0/1] port link-flap protect enable interval 10 threshold 5

Related commands

dampening

link-delay

link-flap protect enable

Ethernet interface commands -- Common Ethernet interface commands -- port link-mode

Use port link-mode to change the link mode of an Ethernet interface.

Use undo port link-mode to restore the default.

Syntax

port link-mode { bridge | route }

undo port link-mode

Default

The default setting depends on the interface card model.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

bridge: Specifies the Layer 2 mode.

route: Specifies the Layer 3 mode.

Usage guidelines

Interfaces operate differently depending on the hardware structure of interface cards. For a device:

· Some Ethernet interfaces can operate only as Layer 2 Ethernet interfaces (in bridge mode).

· Some Ethernet interfaces can operate only as Layer 3 Ethernet interfaces (in route mode).

· Some Ethernet interfaces can operate either as Layer 2 or Layer 3 Ethernet interfaces. You can use this command to set the link mode to bridge or route for these Ethernet interfaces.

Changing the link mode of an Ethernet interface also restores all commands (except shutdown and combo enable) on the Ethernet interface to their defaults in the new link mode.

Examples

# Configure GigabitEthernet 1/0/1 to operate in Layer 2 mode.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] port link-mode bridge

Ethernet interface commands -- Common Ethernet interface commands -- port-mode

Use port-mode to configure a 10-GE interface to operate in LAN or WAN mode.

Use undo port-mode to restore the default.

Syntax

port-mode { lan | wan }

undo port-mode

Default

A 10-GE interface operates in LAN mode.

Views

10-GE interface view

Predefined user roles

network-admin

mdc-admin

Parameters

lan: Configures the interface to operate in LAN mode. An interface operating in this mode transmits Ethernet packets and connects an Ethernet network.

wan: Configures the interface to operate in WAN mode. An interface operating in this mode transmits SDH packets and connects an SDH network. In addition, it supports point-to-point links only.

Examples

# Configure Ten-GigabitEthernet 1/0/1 to operate in WAN mode.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] port-mode wan

Ethernet interface commands -- Common Ethernet interface commands -- priority-flow-control

Use priority-flow-control to enable PFC in auto mode or forcibly.

Use undo priority-flow-control to disable PFC.

Syntax

priority-flow-control { auto | enable }

undo priority-flow-control

Default

PFC is disabled on Ethernet interfaces.

Views

System view

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

auto: Specifies PFC in auto mode. In this mode, the local end automatically negotiates the PFC status with its peer.

enable: Forcibly enables PFC.

Usage guidelines

When congestion occurs in the network, the local device notifies the peer to stop sending packets carrying the specified 802.1p priority if all of the following conditions exist:

· Both the local end and the remote end have PFC enabled.

· Both the local end and the remote end have the priority-flow-control no-drop dot1p command configured.

· The specified 802.1p priority is in the 802.1p priority list specified by the dot1p-list argument.

· The local end receives a packet carrying the specified 802.1p priority.

Examples

# Enable PFC in auto mode on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] priority-flow-control auto

Related commands

display priority-flow-control

priority-flow-control no-drop dot1p

Ethernet interface commands -- Common Ethernet interface commands -- priority-flow-control no-drop dot1p

Use priority-flow-control no-drop dot1p to enable PFC for 802.1p priorities.

Use undo priority-flow-control no-drop dot1p to disable PFC for the specified 802.1p priority.

Syntax

priority-flow-control no-drop dot1p dot1p-list

undo priority-flow-control no-drop dot1p

Default

PFC is disabled for all 802.1p priorities.

Views

System view

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

dot1p-list: Specifies an 802.1p priority (or dot1p priority) list to identify flows that are subject to PFC (for example: 1,3-5). A hyphen (-) connects two numeric values, which together indicate a continuous value range. Different values or value ranges are separated with commas (,). You can configure up to 16 characters for this argument.

Usage guidelines

When congestion occurs in the network, a packet is transmitted preferentially if both of the following conditions exist:

· Both the local end and the remote end have PFC enabled and have the priority-flow-control no-drop dot1p command configured.

· The 802.1p priority of the packet received on the local end is within the 802.1p priority list specified by the dot1p-list argument. For more information about the 802.1p priority, see ACL and QoS Configuration Guide.

If you configure the flow control or flow-control receive enable command on a PFC-enabled device or interface, the following events occur:

· The PFC configuration takes effect.

· The configuration of the flow control or flow-control receive enable command is ignored.

· The flow control or flow-control receive enable command takes effect on the device or interface only when PFC is disabled on it.

Examples

# Enable PFC in auto mode on GigabitEthernet 1/0/1, and enable PFC for 802.1p priority 5.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] priority-flow-control auto

[Sysname-GigabitEthernet1/0/1] priority-flow-control no-drop dot1p 5

Related commands

display priority-flow-control

flow-control

flow-control receive enable

priority-flow-control

Ethernet interface commands -- Common Ethernet interface commands -- reset counters interface

Use reset counters interface to clear the interface statistics.

Syntax

reset counters interface [ interface-type [ interface-number | interface-number.subnumber ] ]

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

interface-type: Specifies an interface type.

interface-number: Specifies an interface number.

interface-number.subnumber: Specifies a subinterface number. The interface-number argument is an interface number. The subnumber argument is the number of a subinterface created under the interface. The value range for the subnumber argument is 1 to 4094.

Usage guidelines

Use this command to clear history statistics if you want to collect traffic statistics for a specific time period.

If you do not specify an interface type, this command clears statistics for all interfaces.

If you specify an interface type but do not specify an interface number, this command clears statistics for all interfaces of the specified type.

Examples

# Clear the statistics for GigabitEthernet 1/0/1.

<Sysname> reset counters interface gigabitethernet 1/0/1

Related commands

display counters interface

display counters rate interface

display interface

Ethernet interface commands -- Common Ethernet interface commands -- reset ethernet statistics

Use reset ethernet statistics to clear the Ethernet module statistics.

Syntax

Centralized devices:

reset ethernet statistics

Distributed devices in standalone mode:Centralized IRF devices:

reset ethernet statistics [ slot slot-number [ cpu cpu-number ] ]

Distributed devices in IRF mode:

reset ethernet statistics [ chassis chassis-number slot slot-number [ cpu cpu-number ] ]

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command clears statistics for all cards. (Distributed devices in standalone mode.)

slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command clears statistics for all IRF member devices. (Centralized IRF devices.) (IRF 3 incapable.)

slot slot-number: Specifies an IRF member device by its member ID or specifies a PEX by its virtual slot number. On an IRF fabric, this command clears statistics for all member devices if you do not specify a member device. On an IRF 3 system, this command clears statistics for all IRF member devices and PEXs if you do not specify an IRF member device or PEX. (Centralized IRF devices.) (IRF 3 capable.)

chassis chassis-number slot slot-number: Specifies a card on an IRF member device. The chassis-number argument represents the member ID of the IRF member device. The slot-number argument represents the slot number of the card. If you do not specify a card, this command clears statistics for all cards of all IRF member devices. (Distributed devices in IRF mode.) (IRF 3 incapable.)

chassis chassis-number slot slot-number: Specifies a card on an IRF member device or specifies a PEX. The chassis-number argument represents the member ID of the IRF member device or the virtual chassis number of the PEX. The slot-number argument represents the slot number of the card or PEX. On an IRF fabric, this command clears statistics for all cards if you do not specify a card. On an IRF 3 system, this command clears statistics for all cards and PEXs if you do not specify a card or PEX. (Distributed devices in IRF mode.) (IRF 3 capable.)

cpu cpu-number: Specifies a CPU by its number. This option is available only if multiple CPUs are available on the specified slot.

Examples

# (Centralized devices.) Clear the Ethernet module statistics.

<Sysname> reset ethernet statistics

# (Distributed devices in standalone mode.) (Centralized IRF devices.) Clear the Ethernet module statistics for the specified slot.

<Sysname> reset ethernet statistics slot 1

Related commands

display ethernet statistics

Ethernet interface commands -- Common Ethernet interface commands -- reset packet-drop interface

Use reset packet-drop interface to clear the dropped packet statistics for an interface.

Syntax

reset packet-drop interface [ interface-type [ interface-number | interface-number.subnumber ] ]

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

interface-type: Specify an interface type.

interface-number: Specify an interface number.

interface-number.subnumber: Specifies a subinterface number. The interface-number argument is an interface number. The subnumber argument is the number of a subinterface created under the interface. The value range for the subnumber argument is 1 to 4094.

Usage guidelines

If you do not specify an interface type, this command clears dropped packet statistics for all interfaces on the device.

If you specify an interface type but do not specify an interface number, the command clears dropped packet statistics for all interfaces of the specified type.

Examples

# Clear dropped packet statistics for GigabitEthernet 1/0/1.

<Sysname> reset packet-drop interface gigabitethernet 1/0/1

# Clear dropped packet statistics for all interfaces.

<Sysname> reset packet-drop interface

Related commands

display packet-drop

Ethernet interface commands -- Common Ethernet interface commands -- shutdown

Use shutdown to shut down an Ethernet interface or subinterface.

Use undo shutdown to bring up an Ethernet interface or subinterface.

Syntax

shutdown

undo shutdown

Default

The default state of an interface varies by device model.

Views

Ethernet interface view

Ethernet subinterface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Some interface configurations might require an interface restart before taking effect.

The shutdown, port up-mode, and loopback commands are mutually exclusive.

Examples

# Shut down and then bring up GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] shutdown

[Sysname-GigabitEthernet1/0/1] undo shutdown

# Shut down and then bring up GigabitEthernet 1/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1] shutdown

[Sysname-GigabitEthernet1/0/1.1] undo shutdown

Ethernet interface commands -- Common Ethernet interface commands -- speed

Use speed to set the speed of an Ethernet interface.

Use undo speed to restore the default.

Syntax

speed { 10 | 100 | 1000 | 10000 | 20000 | 25000 | 40000 | 100000 | auto }

undo speed

Default

The default speed of an Ethernet interface varies by interface card model.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

10: Sets the interface speed to 10 Mbps.

100: Sets the interface speed to 100 Mbps.

1000: Sets the interface speed to 1000 Mbps.

10000: Sets the interface speed to 10000 Mbps.

20000: Sets the interface speed to 20000 Mbps.

25000: Sets the interface speed to 25000 Mbps.

40000: Sets the interface speed to 40000 Mbps.

100000: Sets the interface speed to 100000 Mbps.

auto: Enables the interface to negotiate a speed with its peer.

Usage guidelines

For an Ethernet copper port, use the speed command to set its speed to match the speed of the peer interface.

For a fiber port, use the speed command to set its speed to match the rate of a transceiver module.

Support of an interface for the keywords depends on the interface type. For more information, use the speed ? command in interface view.

Examples

# Configure GigabitEthernet 1/0/1 to autonegotiate the speed.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] speed auto

Related commands

speed auto

Ethernet interface commands -- Common Ethernet interface commands -- speed auto downgrade

Use speed auto downgrade to enable automatic negotiation for speed downgrading.

Use undo speed auto downgrade to disable automatic negotiation for speed downgrading.

Syntax

speed auto downgrade

undo speed auto downgrade

Default

Automatic negotiation for speed downgrading is enabled.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command takes effect after you configure it on the interface at either end of a link and the two interfaces are configured to automatically negotiate the speed.

This command is applicable only to GE interfaces.

Examples

# Enable automatic negotiation for speed downgrading on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] speed auto downgrade

Related commands

speed auto

Ethernet interface commands -- Common Ethernet interface commands -- sub-interface rate-statistic

Use sub-interface rate-statistic to enable rate statistics collection for the subinterfaces of an Ethernet interface.

Use undo sub-interface rate-statistic to disable rate statistics collection for the subinterfaces of an Ethernet interface.

Syntax

sub-interface rate-statistic

undo sub-interface rate-statistic

Default

The system does not collect rate statistics for the subinterfaces of an Ethernet interface.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command is resource intensive. When you use this command, make sure you fully understand its impact on system performance.

Examples

# Enable rate statistics collection for the subinterfaces of GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] sub-interface rate-statistic

This configuration may make a negative effect on the performance. Are you sure to continue? [Y/N]:y

Ethernet interface commands -- Common Ethernet interface commands -- threshold

Use threshold to set the SD or SF threshold for a 10-GE interface operating in WAN mode.

Use undo threshold to restore the default.

Syntax

threshold { sd sdvalue | sf sfvalue } *

undo threshold [ sd | sf ]

Default

The default settings vary by device model.

Views

10-GE interface view

Predefined user roles

network-admin

mdc-admin

Parameters

sd: Specifies the SD alarm threshold.

sdvalue: Specifies the SD alarm threshold in the form of 10e-sdvalue. The value range for the sdvalue argument is 3 to 9. The greater the sdvalue argument, the smaller the SD alarm threshold.

sf: Specifies the SF alarm threshold.

sfvalue: Specifies the SF alarm threshold in the form of 10e-sfvalue. The value range for the sfvalue argument is 3 to 9. The greater the sfvalue argument, the smaller the SF alarm threshold.

Usage guidelines

An interface generates SD or SF alarms when the bit error rate exceeds the SD or SF alarm threshold. SF alarms indicate a more serious line performance degradation than SD alarms. The SF alarm threshold must be higher than the SD alarm threshold.

Examples

# Set the SD alarm threshold to 10e-5 for Ten-GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] port-mode wan

[Sysname-Ten-GigabitEthernet1/0/1] threshold sd 5

# Set the SD alarm threshold to 10e-7 and the SF alarm threshold to 10e-5 for Ten-GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] port-mode wan

[Sysname-Ten-GigabitEthernet1/0/1] threshold sd 7 sf 5

Related commands

port-mode

Ethernet interface commands -- Common Ethernet interface commands -- unicast-suppression

Use unicast-suppression to enable unknown unicast storm suppression and set the unknown unicast storm suppression threshold.

Use undo unicast-suppression to disable unknown unicast storm suppression.

Syntax

unicast-suppression { ratio | pps max-pps | kbps max-kbps }

undo unicast-suppression

Default

Ethernet interfaces do not suppress unknown unicast traffic.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

ratio: Sets the unknown unicast suppression threshold as a percentage of the interface bandwidth. The value range for this argument (in percentage) is 0 to 100. A smaller value means that less unknown unicast traffic is allowed to pass through.

pps max-pps: Specifies the maximum number of unknown unicast packets that the interface can forward per second. The value range for the max-pps argument (in pps) is 0 to 1.4881 ?the interface bandwidth.

kbps max-kbps: Specifies the maximum number of kilobits of unknown unicast traffic that the Ethernet interface can forward per second. The value range for this argument (in kbps) is 0 to the interface bandwidth.

Usage guidelines

The unknown unicast storm suppression feature limits the size of unknown unicast traffic to a threshold on an interface. When the unknown unicast traffic on the interface exceeds this threshold, the system discards packets until the unknown unicast traffic drops below this threshold.

Both the storm-constrain command and the unicast-suppression command can suppress unknown unicast storms on a port. The unicast-suppression command uses the chip to physically suppress unknown unicast traffic. It has less influence on the device performance than the storm-constrain command, which uses software to suppress unknown unicast traffic.

For the unknown unicast traffic suppression result to be determined, do not configure both the storm-constrain unicast command and the unicast-suppression command on an interface.

The configured suppression threshold value in pps or kbps might be converted into a multiple of a step supported by the chip. As a result, the effective suppression threshold might be different from the configured one. To determine the suppression threshold that takes effect, see the prompts on the device.

Examples

# Set the unknown unicast storm suppression threshold to 10000 kbps on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] unicast-suppression kbps 10000

The actual value is 10048 on port GigabitEthernet1/0/1 currently.

The output shows that the value that takes effect is 10048 kbps (157 times of 64), because the chip only supports step 64.

Related commands

broadcast-suppression

multicast-suppression

Ethernet interface commands -- Common Ethernet interface commands -- using fortygige

In 10-GE breakout interface view, use using fortygige to combine 10-GE breakout interfaces split from a 40-GE interface into a 40-GE interface.

In 100-GE interface view, use using fortygige to change a 100-GE interface to a 40-GE interface.

Use undo using fortygige to cancel the configuration.

Syntax

using fortygige

undo using fortygige

Default

The 10-GE breakout interfaces are not combined and operate as single interfaces. A 100-GE interface is not changed to a 40-GE interface.

Views

10-GE breakout interface view

100-GE interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command is not supported on non-default MDCs.

If you need higher bandwidth on a single interface, you can combine four 10-GE breakout interfaces split from a 40-GE interface into a 40-GE interface. To do so, execute this command on any of these 10-GE breakout interfaces.

Change a 100-GE interface to a 40-GE interface when the following conditions exist:

· The peer is a 40-GE interface.

· No 100-GE transceiver module is available, and 40-GE transceiver modules are available.

Reboot the device or interface card if required.

40-GE interfaces changed from 100-GE interfaces cannot be split.

Examples

# Combine Ten-GigabitEthernet 1/0/1:1 through Ten-GigabitEthernet 1/0/1:4 into a 40-GE interface.

<System> system-view

[System] interface ten-gigabitethernet1/0/1:1

[System-Ten-GigabitEthernet1/0/1:1] using fortygige

The interfaces Ten-GigabitEthernet1/0/1:1 through Ten-GigabitEthernet1/0/1:4 will be deleted. Continue? [Y/N]:y

Reboot device to make the configuration take effect.

# Change HundredGigE 1/0/1 to a 40-GE interface.

<System> system-view

[System] interface hundredgige 1/0/1

[System-HundredGigE1/0/1] using fortygige

The interface HundredGigE1/0/1 will be deleted. Continue? [Y/N]:y

Reboot device to make the configuration take effect.

Related commands

using hundredgige

using tengige

using twentygige

Ethernet interface commands -- Common Ethernet interface commands -- using fortygige-from-hundredgige interface

Use using hundredgige-from-fortygige interface to change 100-GE interfaces to 40-GE interfaces.

Syntax

using fortygige-from-hundredgige interface interface-list

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

interface-list: Specifies a space-separated list of up to 24 interface items. Each item specifies an interface or a range of interfaces in the form of interface-type interface-number1 [ to interface-type interface-number2 ]. The value for interface-number2 must be greater than or equal to the value for interface-number1. The interface type can only be HundredGigE interface. The interfaces to be changed must be on the same card.

Usage guidelines

This command is not supported on non-default MDCs.

For this configuration to succeed, make sure all interfaces in one group are specified in this command. Interface grouping varies by device model. The interface numbers remain the same after the change.

After you execute this command, whether you need to reboot the device or interface card depends on the device model.

Examples

# Change HundredGigE1/0/1 through HundredGigE1/0/4 on the MPU to 40-GE interfaces.

<Sysname> system-view

[Sysname] using fortygige-from-hundredgige interface hundredgige 1/0/1 to hundredgige 1/0/4

The interfaces will be deleted. Continue? [Y/N]: y

Save the current configuration and reboot the MPU to make the configuration take effect.

# Change HundredGigE2/0/1 through HundredGigE2/0/4 on the interface card to 40-GE interfaces.

<Sysname> system-view

[Sysname] using fortygige-from-hundredgige interface hundredgige 2/0/1 to hundredgige 2/0/4

The interfaces will be deleted. Continue? [Y/N]: y

Reboot the LPU to make the configuration take effect.

Related commands

using hundredgige-from-fortygige interface

Ethernet interface commands -- Common Ethernet interface commands -- using hundredgige

In 10-GE breakout interface view, use using hundredgige to combine 10-GE or 25-GE breakout interfaces split from a 100-GE interface into a 100-GE interface.

In the view of a 40-GE interface changed from a 100-GE interface, use using hundredgige to restore a 40-GE interface back to a 100-GE interface.

Use undo using hundredgige to cancel the configuration.

Syntax

using hundredgige

undo using hundredgige

Default

The 10-GE or 25-GE breakout interfaces are not combined and operate as single interfaces. The 40-GE interface is not changed to a 100-GE interface.

Views

10-GE breakout interface view

25-GE breakout interface view

View of a 40-GE interface changed from a 100-GE interface

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command is not supported on non-default MDCs.

You can split a 100-GE interface into ten or twelve 10-GE or four 25-GE breakout interfaces, depending on the chip specifications:

· A 100-GE interface that has no redundant bandwidth can be split into ten 10-GE breakout interfaces.

· A 100-GE interface that has 20-GE redundant bandwidth can be split into twelve 10-GE breakout interfaces.

If you need higher bandwidth on a single interface, perform the following tasks as needed:

· You can combine ten or twelve 10-GE breakout interfaces split from a 100-GE interface into a 100-GE interface. To do so, execute this command on any of these 10-GE breakout interfaces.

· You can combine four 25-GE breakout interfaces split from a 100-GE interface into a 100-GE interface. To do so, execute this command on any of these 25-GE breakout interfaces.

· You can restore a 40-GE interface that was changed from a 100-GE interface to a 100-GE interface. This command is only supported on a 40-GE interface that was changed from a 100-GE interface.

Reboot the device or interface card if required.

Examples

# Combine Ten-GigabitEthernet 1/0/1:1 through Ten-GigabitEthernet 1/0/1:10 into a 100-GE interface.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 1/0/1:1

[Sysname-Ten-GigabitEthernet1/0/1:1]using hundredgige

The interfaces Ten-GigabitEthernet1/0/1:1 through Ten-GigabitEthernet1/0/1:10 will be deleted. Continue? [Y/N]:y

Reboot device to make the configuration take effect.

# Restore FortyGigE 1/0/1:1 to a 100-GE interface.

<Sysname> system-view

[Sysname] interface fortygige 1/0/1:1

[Sysname-FortyGigE1/0/1:1] using hundredgige

The interface FortyGigE1/0/1:1 will be deleted. Continue? [Y/N]:y

Reboot device to make the configuration take effect.

# Combine Twenty-FiveGigE 1/0/1:1 through Twenty-FiveGigE 1/0/1:4 into a 100-GE interface.

<Sysname> system-view

[Sysname] interface twenty-fivegige 1/0/1:1

[Sysname-Twenty-FiveGigE1/0/1:1] using hundredgige

The interfaces Twenty-FiveGigE 1/0/1:1 through Twenty-FiveGigE 1/0/1:4 will be deleted. Continue? [Y/N]:y

Reboot device to make the configuration take effect.

Related commands

using fiftygige

using fortygige

using tengige

using twenty-fivegige

Ethernet interface commands -- Common Ethernet interface commands -- using hundredgige-from-fortygige interface

Use using hundredgige-from-fortygige interface to change 40-GE interfaces to 100-GE interfaces.

Syntax

using hundredgige-from-fortygige interface interface-list

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

interface-list: Specifies a space-separated list of up to 24 interface items. Each item specifies an interface or a range of interfaces in the form of interface-type interface-number1 [ to interface-type interface-number2 ]. The value for interface-number2 must be greater than or equal to the value for interface-number1. The interface type can only be FortyGigE interface. The interfaces to be changed must be on the same card.

Usage guidelines

This command is not supported on non-default MDCs.

For this configuration to succeed, make sure all interfaces in one group are specified in this command. Interface grouping varies by device model. The interface numbers remain the same after the change.

After you execute this command, whether you need to reboot the device or interface card depends on the device model.

Examples

# Change FortyGigE1/0/1 through FortyGigE1/0/4 on the MPU to 100-GE interfaces.

<Sysname> system-view

[Sysname] using hundredgige-from-fortygige interface fortygige 1/0/1 to fortygige 1/0/4

The interfaces will be deleted. Continue? [Y/N]: y

Save the current configuration and reboot the MPU to make the configuration take effect.

# Change FortyGigE2/0/1 through FortyGigE2/0/4 on the interface card to 100-GE interfaces.

<Sysname> system-view

[Sysname] using hundredgige-from-fortygige interface fortygige 2/0/1 to fortygige 2/0/4

The interfaces will be deleted. Continue? [Y/N]: y

Reboot the LPU to make the configuration take effect.

Related commands

using fortygige-from-hundredgige interface

Ethernet interface commands -- Common Ethernet interface commands -- using tengige

Use using tengige to split a high bandwidth interface into multiple 10-GE breakout interfaces.

Use undo using tengige to cancel the configuration.

Syntax

using tengige

undo using tengige

Default

A high bandwidth interface is not split and operates as a single interface.

Views

40-GE interface view

100-GE interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command is not supported on non-default MDCs.

To improve port density, reduce costs, and improve network flexibility, you can split a high bandwidth interface into multiple 10-GE breakout interfaces. For example:

· Split a 40-GE interface FortyGigE 1/0/1 into four 10-GE breakout interfaces Ten-GigabitEthernet 1/0/1:1 through Ten-GigabitEthernet 1/0/1:4.

· Split a 100-GE interface HundredGigE 1/0/1 into ten 10-GE breakout interfaces Ten-GigabitEthernet 1/0/1:1 through Ten-GigabitEthernet 1/0/1:10 or into twelve 10-GE breakout interfaces Ten-GigabitEthernet 1/0/1:1 through Ten-GigabitEthernet 1/0/1:12.

The 10-GE breakout interfaces support the same configuration and attributes as common 10-GE interfaces, except that they are numbered in a different way.

Reboot the device or interface card if required.

Examples

# Split HundredGigE 1/0/1 into 10-GE breakout interfaces.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1

[Sysname-HundredGigE1/0/1] using tengige

The interface HundredGigE1/0/1 will be deleted. Continue? [Y/N]:y

Reboot device to make the configuration take effect.

# Split FortyGigE 1/0/1 into four 10-GE breakout interfaces.

<System> system-view

[System] interface fortygige 1/0/1

[System-FortyGigE1/0/1] using tengige

The interface FortyGigE1/0/1 will be deleted. Continue? [Y/N]:y

Reboot device to make the configuration take effect.

Related commands

using fortygige

using hundredgige

Ethernet interface commands -- Common Ethernet interface commands -- using twenty-fivegige

Use using twenty-fivegige to split a 100-GE interface into four 25-GE breakout interfaces.

Use undo using twenty-fivegige to cancel the configuration.

Syntax

using twenty-fivegige

undo using twenty-fivegige

Default

A 100-GE interface is not split and operates as a single interface.

Views

100-GE interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command is not supported on non-default MDCs.

To improve port density, reduce costs, and improve network flexibility, you can split a 100-GE interface into four 25-GE breakout interfaces. For example, you can split the 100-GE interface HundredGigE 1/0/1 into four 25-GE breakout interfaces Twenty-FiveGigE 1/0/1:1 through Twenty-FiveGigE 1/0/1:4.

Reboot the device or interface card if required.

Examples

# Split HundredGigE 1/0/1 into four 25-GE breakout interfaces.

<Sysname> system-view

[Sysname] interface hundredgige 1/0/1

[Sysname-HundredGigE1/0/1] using twenty-fivegige

The interface HundredGigE1/0/1 will be deleted. Continue? [Y/N]:y

Reboot device to make the configuration take effect.

Related commands

using hundredgige

Ethernet interface commands -- Common Ethernet interface commands -- using twentygige

Use using twentygige to split a 40-GE interface into two 20-GE breakout interfaces.

Use undo using twentygige to cancel the configuration.

Syntax

using twentygige

undo using twentygige

Default

A 40-GE interface is not split and operates as a single interface.

Views

40-GE interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command is not supported on non-default MDCs.

To improve port density, reduce costs, and improve network flexibility, you can split a 40-GE interface into two 20-GE breakout interfaces. For example, you can split the 40-GE interface FortyGigE 1/0/1 into two 20-GE breakout interfaces TwentyGigE 1/0/1:1 and TwentyGigE 1/0/1:2.

The 20-GE breakout interfaces support the same configuration and attributes as common 20-GE interfaces, except that they are numbered in a different way.

Reboot the device or interface card if required.

Examples

# Split FortyGigE 1/0/1 into two 20-GE breakout interfaces.

<System> system-view

[System] interface fortygige 1/0/1

[System-FortyGigE1/0/1] using twentygige

The interface FortyGigE1/0/1 will be deleted. Continue? [Y/N]:y

Reboot device to make the configuration take effect.

Related commands

using fortygige

Ethernet interface commands -- Layer 2 Ethernet interface commands -- display storm-constrain

Use display storm-constrain to display storm control settings and statistics.

Syntax

display storm-constrain [ broadcast | multicast | unicast ] [ interface interface-type interface-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

broadcast: Displays broadcast storm control settings and statistics.

known-unicast: Displays known unicast storm control settings and statistics.

multicast: Displays multicast storm control settings and statistics.

unicast: Displays unknown unicast storm control settings and statistics.

interface interface-type interface-number: Specifies an interface by its type and number. If you do not specify this option, the command displays storm control settings and statistics for all storm control-enabled interfaces.

Usage guidelines

If you do not specify any keywords, this command displays all storm control settings on all storm control-enabled interfaces.

Examples

# Display the storm control settings on all storm control-enabled ports.

<Sysname> display storm-constrain

Abbreviation: BC - broadcast; MC - multicast; UC - unicast

KNUC - known unicast; FW - forwarding

Flow Statistic Interval: 5 (in seconds)

Port Type Lower Upper Unit CtrlMode Status Trap Log SwitchNum

-------------------------------------------------------------------------------------

GE1/0/1 MC 100 200 kbps shutdown shutdown off on 10

Table 9 Command output

Field | Description
Flow Statistic Interval | Traffic polling interval (in seconds) of the storm control module.
Port | Abbreviated interface name.
Type | Type of traffic subjected to storm control: · BC—Broadcast packets. · MC—Multicast packets. · UC—Unknown unicast packets. · KNUC—Known unicast packets.
Lower | Lower storm control threshold, in pps, kbps, or percentage.
Upper | Upper storm control threshold, in pps, kbps, or percentage.
Unit | Storm control threshold unit: · pps. · kbps. · percentage.
CtrlMode | Action (block or shutdown) taken on the interface when the upper threshold is reached. N/A indicates that no action is configured.
Status | Packet forwarding status: · forwarding—The port is forwarding traffic correctly. · shutdown—The port has been shut down. · block—The port drops the type of traffic.
Trap | Status of the storm control threshold event trap switch: · on—The port sends threshold event traps. · off—The port does not send threshold event traps.
Log | Status of the storm control threshold event log switch: · on—The port sends threshold event log messages. · off—The port does not send threshold event log messages.
SwitchNum | Number of forwarding state changes of the interface. When the SwitchNum field reaches 65535, it resets automatically.

‌

Ethernet interface commands -- Layer 2 Ethernet interface commands -- mac-address

Use mac-address to set the MAC address of an Ethernet interface.

Use undo mac-address to restore the default.

Syntax

mac-address mac-address

undo mac-address

Default

The default MAC address of an Ethernet interface varies by device model.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

mac-address: Specifies a MAC address, in the format of H-H-H.

Examples

# Set the MAC address of GigabitEthernet 1/0/1 to 0001-0001-0001.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] mac-address 1-1-1

Ethernet interface commands -- Layer 2 Ethernet interface commands -- mdix-mode

| IMPORTANT: Fiber ports do not support this command.

‌

Use mdix-mode to configure the Medium Dependent Interface Cross-Over (MDIX) mode of an Ethernet interface.

Use undo mdix-mode to restore the default.

Syntax

mdix-mode { automdix | mdi| mdix }

undo mdix-mode

Default

Ethernet interfaces operate in automdix mode.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

automdix: Specifies that the interface negotiates pin roles with its peer.

mdi: Specifies that pins 1 and 2 are transmit pins and pins 3 and 6 are receive pins.

mdix: Specifies that pins 1 and 2 are receive pins and pins 3 and 6 are transmit pins.

Examples

# Configure GigabitEthernet 1/0/1 to operate in automdix mode.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] mdix-mode automdix

Ethernet interface commands -- Layer 2 Ethernet interface commands -- port bridge enable

Use port bridge enable to enable bridging on an Ethernet interface.

Use undo port bridge enable to disable bridging on an Ethernet interface.

Syntax

port bridge enable

undo port bridge enable

Default

Bridging is disabled on an Ethernet interface.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

By default, the device drops packets whose outgoing interface and incoming interface are the same.

To enable the device to forward such packets rather than drop them, configure this command in Ethernet interface view. After the device receives a broadcast or unknown unicast packet, the device forwards the packet through all interfaces in the VLAN to which the incoming interface of the packet belongs.

Do not add interfaces configured with this command to an aggregation group.

Examples

# Enable bridging on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] port bridge enable

Ethernet interface commands -- Layer 2 Ethernet interface commands -- port connection-distance

Use port connection-distance to set the interface connection distance.

Use undo port connection-distance to restore the default.

Syntax

port connection-distance { 300 | 10000 | 20000 | 40000 }

undo port connection-distance

Default

The interface connection distance is 10000 meters.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

300: Sets the interface connection distance to 300 meters.

10000: Sets the interface connection distance to 10000 meters.

20000: Sets the interface connection distance to 20000 meters.

40000: Sets the interface connection distance to 40000 meters.

Usage guidelines

When two directly connected interfaces communicate, they use the buffer area to buffer the received data. A longer interface connection distance requires a greater buffer area.

Configure this command to modify the buffer area size by setting the interface connection distance.

Configure this command based on the network conditions because the buffer area size is limited.

Examples

# Sets the interface connection distance to 300 meters for GigabitEthernet 1/0/1.

<Sysname> system-view

<Sysname> interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] port connection-distance 300

Ethernet interface commands -- Layer 2 Ethernet interface commands -- port connection-mode

Use port connection-mode to set the connection mode for an interface.

Use undo port connection-mode to restore the default.

Syntax

port connection-mode { extend | normal }

undo port connection-mode

Default

The interface operates in normal connection mode.

Views

10-GE interface view

Predefined user roles

network-admin

mdc-admin

Parameters

extend: Specifies the interface to operate in extended connection mode.

normal: Specifies the interface to operate in normal connection mode.

Usage guidelines

For communication between the device and the OAP module in an OAA network, configure the internal interfaces that connect them to operate in extended connection mode.

Examples

# Configure Ten-GigabitEthernet 1/0/1 to operate in extended connection mode.

<Sysname> system-view

<Sysname> interface ten-gigabitethernet1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] port connection-mode extend

Ethernet interface commands -- Layer 2 Ethernet interface commands -- port up-mode

Use port up-mode to forcibly bring up a fiber Ethernet port.

Use undo port up-mode to restore the default.

Syntax

port up-mode

undo port up-mode

Default

A fiber Ethernet port is not forcibly brought up. The physical state of a fiber port depends on the physical state of the fibers.

Views

Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command forcibly brings up a fiber Ethernet port and enables the port to forward packets unidirectionally over a single link. In this way, transmission links are well utilized.

Only 10-GE fiber ports operating in LAN mode, GE fiber ports, and 40-GE fiber ports support this command.

Copper ports and combo interfaces do not support this command.

The shutdown, port up-mode, and loopback commands are mutually exclusive.

A GE fiber port forcibly brought up cannot correctly forward traffic if it is installed with a fiber-to-copper converter, 100/1000-Mbps transceiver module, or 100-Mbps transceiver module. To solve the problem, use the undo port up-mode command on the fiber port.

Examples

# Forcibly bring up fiber port GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] port up-mode

Ethernet interface commands -- Layer 2 Ethernet interface commands -- port-type

Use port-type to switch the interface type between Layer 2 Ethernet and FC.

Syntax

In Layer 2 Ethernet interface view:

port-type fc

In FC interface view:

port-type ethernet

Default

The interface type is Layer 2 Ethernet.

Views

Layer 2 Ethernet interface view

FC interface view

Predefined user roles

network-admin

mdc-admin

Parameters

ethernet: Changes the type of the interface to Layer 2 Ethernet.

fc: Changes the type of the interface to FC.

Usage guidelines

Some Layer 2 Ethernet interfaces can be changed to FC interfaces. To change such a Layer 2 Ethernet interface to a FC interface, enter the Layer 2 Ethernet interface view and execute the port-type fc command. To change the FC interface to a Layer 2 Ethernet interface, enter the FC interface view and execute the port-type ethernet command.

After the type of an interface is changed, the system performs the following actions:

· Deletes the original interface.

· Creates a new interface that is numbered the same as the original interface.

Examples

# Change Layer 2 Ethernet interface Ten-GigabitEthernet 1/0/1 into an FC interface.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] port-type fc

[Sysname-Fc1/0/1]

Ethernet interface commands -- Layer 2 Ethernet interface commands -- speed auto

Use speed auto to set options for speed autonegotiation.

Use undo speed to restore the default.

Syntax

speed auto { 10 | 100 | 1000 } *

undo speed

Default

The default settings vary by device model.

Views

100-Mbps or 1000-Mbps Layer 2 Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

10: Configures 10 Mbps as an option for speed autonegotiation.

100: Configures 100 Mbps as an option for speed autonegotiation.

1000: Configures 1000 Mbps as an option for speed autonegotiation.

Usage guidelines

The speed command and the speed auto command supersede each other. The most recent command that you configure takes effect. For example:

· If you configure speed auto 100 1000 and then speed 100 on the interface, the interface speed is forcibly set to 100 Mbps.

· If you configure speed 100 and then speed auto 100 1000 on the interface, the interface negotiates with its peer for a speed. The negotiated speed is either 100 Mbps or 1000 Mbps.

Speed autonegotiation enables an Ethernet interface to negotiate with its peer for the highest speed that both ends support. You can narrow down the speed option list for negotiation. To avoid negotiation failures, make sure a minimum of one speed option is supported at both ends.

Examples

# Configure GigabitEthernet 1/0/1 to use 10 Mbps and 1000 Mbps for speed negotiation.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] speed auto 10 1000

Related commands

speed

Ethernet interface commands -- Layer 2 Ethernet interface commands -- storm-constrain

Use storm-constrain to enable storm control and set thresholds for broadcast, multicast, or unknown unicast packets on an Ethernet interface.

Use undo storm-constrain to disable storm control for broadcast, multicast, unknown unicast, or all types of traffic.

Syntax

storm-constrain { broadcast | multicast | unicast } { pps | kbps | ratio } upperlimit lowerlimit

undo storm-constrain { all | broadcast | multicast | unicast }

Default

Traffic storm control is disabled.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

all: Disables storm control for all types of traffic: broadcast, known unicast, multicast, and unknown unicast.

broadcast: Enables or disables broadcast storm control.

known-unicast: Enables or disables known unicast storm control.

multicast: Enables or disables multicast storm control.

unicast: Enables or disables unknown unicast storm control.

pps: Sets storm control thresholds in pps.

kbps: Sets storm control thresholds in kbps.

ratio: Sets storm control thresholds as a percentage of the transmission capacity of the interface.

upperlimit: Sets the upper threshold, in pps, kbps, or percentage.

· If you specify the pps keyword, the value range for the upperlimit argument is 0 to 1.4881 ?the interface bandwidth.

· If you specify the kbps keyword, the value range for the upperlimit argument is 0 to the interface bandwidth.

· If you specify the ratio keyword, the value range for the upperlimit argument is 0 to 100.

lowerlimit: Sets the lower threshold, in pps, kbps, or percentage.

· If you specify the pps keyword, the value range for the lowerlimit argument is 0 to 1.4881 ?the interface bandwidth.

· If you specify the kbps keyword, the value range for the lowerlimit argument is 0 to the interface bandwidth.

· If you specify the ratio keyword, the value range for the lowerlimit argument is 0 to 100.

Usage guidelines

After you configure storm control for a type of traffic, the device collects the statistics for the type of traffic at the interval configured by using the storm-constrain interval command. When the type of traffic exceeds its upper threshold, the interface takes an action configured by using the storm-constrain control command.

The storm-constrain, broadcast-suppression, multicast-suppression, and unicast-suppression commands can suppress storms on an interface. The broadcast-suppression, multicast-suppression, and unicast-suppression commands use the chip to physically suppress traffic. They have less influence on the device performance than the storm-constrain command, which uses software to suppress traffic.

For the traffic suppression result to be determined, do not configure both storm control and storm suppression for the same type of traffic.

When configuring this command, make sure upperlimit is greater than lowerlimit.

Examples

# Enable unknown unicast storm control on GigabitEthernet 1/0/1 and set the upper and lower thresholds to 200 pps and 150 pps, respectively.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] storm-constrain unicast pps 200 150

# Enable broadcast storm control on GigabitEthernet 1/0/2, and set the upper and lower thresholds to 2000 kbps and 1500 kbps, respectively.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/2

[Sysname-GigabitEthernet1/0/2] storm-constrain broadcast kbps 2000 1500

# Enable multicast storm control on GigabitEthernet 1/0/3, and set the upper and lower thresholds to 80% and 15%, respectively.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/3

[Sysname-GigabitEthernet1/0/3] storm-constrain multicast ratio 80 15

Related commands

storm-constrain control

storm-constrain interval

Ethernet interface commands -- Layer 2 Ethernet interface commands -- storm-constrain control

Use storm-constrain control to set the action to take on an Ethernet interface when a type of traffic (unknown unicast, multicast, or broadcast) exceeds the upper storm control threshold.

Use undo storm-constrain control to restore the default.

Syntax

storm-constrain control { block | shutdown }

undo storm-constrain control

Default

No action is taken on an Ethernet interface when a type of traffic exceeds the upper storm control threshold.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

block: Blocks this type of traffic and forwards other types of traffic. Even though the interface does not forward the blocked traffic, it still counts the traffic. When the blocked traffic drops below the lower threshold, the port begins to forward the traffic.

shutdown: Goes down automatically. The interface goes down automatically and stops forwarding any traffic. When the blocked traffic drops below the lower threshold, the interface does not forward the traffic. To bring up the interface, use the undo shutdown command or disable storm control on the interface.

Examples

# Configure GigabitEthernet 1/0/1 to block a specific type of traffic when the type of traffic exceeds the upper storm control threshold.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] storm-constrain control block

Related commands

storm-constrain

storm-constrain control

Ethernet interface commands -- Layer 2 Ethernet interface commands -- storm-constrain enable log

Use storm-constrain enable log to enable an Ethernet interface to output log messages when it detects storm control threshold events.

Use undo storm-constrain enable log to disable an Ethernet interface from outputting log messages for storm control threshold events.

Syntax

storm-constrain enable log

undo storm-constrain enable log

Default

An Ethernet interface outputs log messages when monitored traffic exceeds the upper threshold or drops below the lower threshold.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Examples

# Enable GigabitEthernet 1/0/1 to output log messages when it detects storm control threshold events.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] storm-constrain enable log

Ethernet interface commands -- Layer 2 Ethernet interface commands -- storm-constrain enable trap

Use storm-constrain enable trap to enable an Ethernet interface to send storm control threshold event traps.

Use undo storm-constrain enable trap to disable an Ethernet interface from sending storm control threshold event traps.

Syntax

storm-constrain enable trap

undo storm-constrain enable trap

Default

An interface sends out storm control threshold event traps when monitored traffic exceeds the upper threshold or drops below the lower threshold.

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Examples

# Enable GigabitEthernet 1/0/1 to send traps when it detects storm control threshold events.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] storm-constrain enable trap

Ethernet interface commands -- Layer 2 Ethernet interface commands -- storm-constrain interval

Use storm-constrain interval to set the traffic polling interval of the storm control module.

Use undo storm-constrain interval to restore the default.

Syntax

storm-constrain interval interval

undo storm-constrain interval

Default

The storm control module polls traffic statistics every 10 seconds.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

interval: Sets the traffic polling interval of the storm control module. The value range is 1 to 300 seconds. To ensure network stability, as a best practice, do not use a traffic polling interval shorter than 10 seconds.

Usage guidelines

The traffic polling interval set by using the storm-constrain interval command is specific to storm control. To set the statistics polling interval of an interface, use the flow-interval command.

Examples

# Set the traffic statistics polling interval of the storm control module to 60 seconds.

<Sysname> system-view

[Sysname] storm-constrain interval 60

Related commands

storm-constrain

storm-constrain control

Ethernet interface commands -- Layer 2 Ethernet interface commands -- virtual-cable-test

| IMPORTANT: This command is not available on fiber ports.

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Use virtual-cable-test to test the cable connection of an Ethernet interface and display the test result.

Syntax

virtual-cable-test

Views

Layer 2 Ethernet interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

If the link of an Ethernet interface is up, testing its cable connection will cause the link to go down and then up.

The test result is for reference only. The cable length detection error is up to 5 m (about 16 ft).

If a test item is not available, a hyphen (-) is displayed.

Examples

# Test the cable connection of GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] virtual-cable-test

Cable status: abnormal(open), 140 metre(s)

Pair Impedance mismatch: -

Pair skew: - ns

Pair swap: -

Pair polarity: -

Insertion loss: - db

Return loss: - db

Near-end crosstalk: - db

Table 10 Command output

Field | Description
Cable status | Cable status: · Normal—The cable is in good condition. · Abnormal—The cable is abnormal. · Abnormal (open)—An open circuit is detected. · Abnormal (short)—A short circuit is detected. · Failure—The test failed.
n metre(s) | If the cable connection is working correctly, this field displays the total length of the cable. If the cable connection fails, this field displays the length from the local port to the faulty point.

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Ethernet interface commands -- Layer 3 Ethernet interface or subinterface commands -- mac-address

Use mac-address to set the MAC address of an Ethernet interface.

Use undo mac-address to restore the default.

Syntax

mac-address mac-address

undo mac-address

Default

The default setting for this command varies by device model.

Views

Layer 3 Ethernet interface view

Layer 3 Ethernet subinterface view

Predefined user roles

network-admin

mdc-admin

Parameters

mac-address: Specifies a MAC address in the format of H-H-H.

Usage guidelines

When you set a MAC address for a Layer 3 Ethernet subinterface, select a MAC address different from that of the main interface.

Do not set a VRRP-reserved MAC address for a Layer 3 Ethernet subinterface.

Examples

# Set the MAC address of GigabitEthernet 1/0/1 to 0001-0001-0001.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] mac-address 1-1-1

Ethernet interface commands -- Layer 3 Ethernet interface or subinterface commands -- mtu

Use mtu to set the MTU for an Ethernet interface or subinterface.

Use undo mtu to restore the default.

Syntax

mtu size

undo mtu

Default

The MTU of an Ethernet interface or subinterface is 1500 bytes.

Views

Layer 3 Ethernet interface view

Layer 3 Ethernet subinterface view

Predefined user roles

network-admin

mdc-admin

Parameters

size: Sets the MTU in bytes. The value range for this argument varies by interface type.

Usage guidelines

A smaller MTU size results in more fragments. When you set the MTU for an interface, consider QoS queue lengths, for example, consider that the default FIFO queue length is 75. To prevent a too small MTU from causing packet drops in QoS queuing, you can perform one of the following configurations:

· Tune the MTU with the mtu command.

· Tune QoS queue lengths with the qos fifo queue-length command.

For more information about the qos fifo queue-length command, see ACL and QoS Command Reference.

Examples

# Set the MTU to 1430 bytes for GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] mtu 1430

# Set the MTU to 1430 bytes for GigabitEthernet 1/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1] mtu 1430

Ethernet interface commands -- Layer 3 Ethernet interface or subinterface commands -- port-type switch

Use port-type switch to change the type of an interface.

Syntax

In standard POS interface view:

port-type switch gigabitethernet

In Layer 3 GigabitEthernet interface view:

port-type switch pos

Views

Standard POS interface view

Layer 3 GigabitEthernet interface view

Predefined user roles

network-admin

mdc-admin

Parameters

gigabitethernet: Changes a standard POS interface to a Layer 3 GigabitEthernet interface.

pos: Changes a Layer 3 GigabitEthernet interface to a standard POS interface.

Usage guidelines

This command removes the original interface, and then creates the target interface with the same number as the original interface.

The device enters the view of the new interface automatically after you execute this command.

Examples

# Change POS 2/2/0 to GigabitEthernet 2/2/0.

<Sysname> system-view

[Sysname] interface pos 2/2/0

[Sysname-Pos2/2/0] port-type switch gigabitethernet

Changing port type can result in loss of port configuration. Are you sure to continue? [Y/N]:y

[Sysname-GigabitEthernet2/2/0]

Ethernet interface commands -- Layer 3 Ethernet interface or subinterface commands -- traffic-statistic enable

Use traffic-statistic enable to enable subinterface rate statistics collection for a Layer 3 Ethernet subinterface.

Use undo traffic-statistic enable to disable subinterface rate statistics collection for a Layer 3 Ethernet subinterface.

Syntax

traffic-statistic enable

undo traffic-statistic enable

Default

Subinterface rate statistics collection is disabled for a Layer 3 Ethernet subinterface.

Views

Layer 3 Ethernet subinterface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

This command is resource intensive. When you use this feature, make sure you fully understand its impact on system performance.

You can use the display interface or display counters command to display the subinterface rate statistics.

Examples

# Enable subinterface rate statistics collection for GigabitEthernet 1/0/1.1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1.1

[Sysname-GigabitEthernet1/0/1.1] traffic-statistic enable

Related commands

display counters

display interface