ATM interface commands -- Common ATM interface commands -- alarm-detect

| NOTE: Support for this command depends on the device model.

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Use alarm-detect to configure the action to take when an RDI, SD, or SF alarm occurs on an interface.

Use undo alarm-detect to restore the default.

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 alarm occurs.

Views

ATM interface view (including 13 physical types: E1, T1, E3, T3, OC-3c/STM-1, OC-12c/STM-4, 25M, ADSL, ADSL 2+, G.SHDSL, SHDSL_4WIRE, SHDSL_4WIRE_BIS, and SHDSL_8WIRE_BIS)

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: Specifies the action to take when the specified alarm is detected on the interface.

link-down: Shuts down 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 reaches 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

# Shut down interface ATM 3/2/1 when an SD alarm occurs on it.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] alarm-detect sd action link-down

Related commands

threshold

ATM interface commands -- Common ATM interface commands -- bandwidth

Use bandwidth to configure the expected bandwidth for 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

ATM interface view (including 13 physical types: E1, T1, E3, T3, OC-3c/STM-1, OC-12c/STM-4, 25M, ADSL, ADSL 2+, G.SHDSL, SHDSL_4WIRE, SHDSL_4WIRE_BIS, and SHDSL_8WIRE_BIS)

ATM subinterface view

EFM interface view (including 4 physical types: G.SHDSL, SHDSL_4WIRE, SHDSL_4WIRE_BIS, and SHDSL_8WIRE_BIS)

EFM 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 interface ATM 3/2/1 to 50 kbps.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] bandwidth 50

ATM interface commands -- Common ATM interface commands -- default

Use default to restore the default settings for an interface.

Syntax

default

Views

ATM interface view (including 13 physical types: E1, T1, E3, T3, OC-3c/STM-1, OC-12c/STM-4, 25M, ADSL, ADSL 2+, G.SHDSL, SHDSL_4WIRE, SHDSL_4WIRE_BIS, and SHDSL_8WIRE_BIS)

ATM subinterface view

EFM interface view (including 4 physical types: G.SHDSL, SHDSL_4WIRE, SHDSL_4WIRE_BIS, and SHDSL_8WIRE_BIS)

EFM 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 impact of this command when you use it on a live network.

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

Examples

# Restore the default settings of interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] default

ATM interface commands -- Common ATM 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 interface name Interface, for example, ATM 3/2/1 Interface.

Views

ATM interface view (including 13 physical types: E1, T1, E3, T3, OC-3c/STM-1, OC-12c/STM-4, 25M, ADSL, ADSL 2+, G.SHDSL, SHDSL_4WIRE, SHDSL_4WIRE_BIS, and SHDSL_8WIRE_BIS)

ATM subinterface view

EFM interface view (including 4 physical types: G.SHDSL, SHDSL_4WIRE, SHDSL_4WIRE_BIS, and SHDSL_8WIRE_BIS)

EFM subinterface view

Predefined user roles

network-admin

mdc-admin

Parameters

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

Examples

# Configure the description of interface ATM 3/2/1 as atmswitch-interface.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] description atmswitch-interface

ATM interface commands -- Common ATM interface commands -- display counters

| NOTE: Support for this command depends on the device model.

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Use display counters to display ATM interface traffic statistics.

Syntax

display counters { inbound | outbound } interface [ atm [ interface-number ] ]

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.

atm [ interface-number ]: Specifies an ATM interface by its number. If you do not specify the atm keyword, this command displays traffic statistics for all interfaces that have traffic counters. If you specify the atm keyword but do not specify the interface-number argument, this command displays traffic statistics for all ATM interfaces.

Examples

# Display inbound traffic statistics for interface ATM 3/2/1.

<Sysname> display counters inbound interface atm 3/2/1

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

ATM3/2/1 100 0 100 0

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 that the interface receives or sends.
Broadcast (pkts) | Total number of broadcast packets that the interface receives or sends.
Multicast (pkts) | Total number of multicast packets that the interface receives or sends.
Err (pkts) | Total number of error packets that the interface receives or sends.
Overflow: More than 14 digits (7 digits for column "Err") | The field displays Overflow when one 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

reset counters interface

ATM interface commands -- Common ATM interface commands -- display counters rate

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

Syntax

display counters rate { inbound | outbound } interface [ atm [ interface-number ] ]

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.

atm [ interface-number ]: Specifies an ATM interface by its number. If you do not specify the atm keyword, this command displays traffic rate statistics for all up interfaces in the most recent statistics interval. If you specify the atm keyword but do not specify the interface-number argument, this command displays traffic rate statistics for all up ATM interfaces in the most recent statistics interval.

Usage guidelines

The statistics interval varies by device model:

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

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

Examples

# Display the inbound traffic rate statistics for interface ATM 3/2/1.

<Sysname> display counters rate inbound interface atm 3/2/1

Usage: Bandwidth utilization in percentage

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

ATM3/2/1 3 0 -- --

Overflow: More than 14 digits.

--: Not supported.

Table 2 Command output

Field | Description
Interface | Abbreviated interface name.
Usage (%) | Interface bandwidth usage (in ratio) for the most recent statistics interval.
Total (pps) | Average receiving or sending rate (in pps) for all packets for the most recent statistics interval.
Broadcast (pps) | Average receiving or sending rate (in pps) for broadcast packets for the most recent statistics interval.
Multicast (pps) | Average receiving or sending rate (in pps) for multicast packets for the most recent statistics interval.
Overflow: More than 14 digits. | Indicates that 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

reset counters interface

ATM interface commands -- Common ATM interface commands -- display interface atm

Use display interface atm to display information about ATM interfaces.

Syntax

display interface [ atm [ interface-number ] ] [ brief [ description | down ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

atm [ interface-number ]: Specifies an ATM interface by its number. If you do not specify the atm keyword, this command displays information about all interfaces on the device. If you specify the atm keyword but do not specify the interface-number argument, this command displays information about all ATM interfaces.

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 interface descriptions.

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

Examples

# Display detailed information about interface ATM 3/2/1.

<Sysname> display interface atm 3/2/1

ATM3/2/1

Current state: DOWN

Line protocol state: DOWN

Description: ATM3/2/1 Interface

Bandwidth: 20000kbps

Maximum transmission unit: 1500

Internet protocol processing: Disabled

AAL enabled: AAL5

Current VCs: 0 (0 on main interface)

ATM over E1, Scramble: enabled, Frame-format: crc4-adm

Code: hdb3, Clock: slave, Cable length: long

Loopback: cell

Cable type: 75 ohm non-balanced

Line Alarm: LOS LOF

Line Error: 0 FERR, 0 LCV, 0 CERR, 0 FEBE

Last link flapping: 4 days 6 hours 39 minutes

Last clearing of counters: Never

Last 300 seconds input rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec

Last 300 seconds output rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec

Input:

0 packets, 0 bytes, 0 buffers

0 errors, 0 crcs, 0 lens, 0 giants

0 pads, 0 aborts, 0 timeouts

0 overflows, 0 overruns, 0 no buffer

Output:

0 packets, 0 bytes, 0 buffers

0 errors, 0 overflows, 0 underruns

# Display brief information about interface ATM 3/2/1.

<Sysname> display interface atm 3/2/1 brief

Brief information on interfaces in route mode:

Link: ADM - administratively down; Stby - standby

Protocol: (s) - spoofing

Interface Link Protocol Primary IP Description

ATM3/2/1 UP UP(s) --

# Display brief information, including the causes, for all ATM interfaces in physically DOWN state.

<Sysname> display interface atm brief down

Brief information on interfaces in route mode:

Link: ADM - administratively down; Stby - standby

Interface Link Cause

ATM3/2/1 DOWN Not connected

Table 3 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). · 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. · DOWN—The data link layer protocol is down.
Description | Description of the interface.
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.
AAL enabled | AAL type enabled on the interface. The ATM interface supports only ATM Adaptation Layer 5 (AAL5).
Current VCs: 0 (0 on main interface) | Number of virtual circuits configured on the interface. Contents in the parentheses indicate the number of virtual circuits configured on the primary interface.
ATM over E1 | Type of the interface.
Scramble | Scrambling state of the interface.
Frame-format | Frame format of the interface: · SDH STM-1. · SONET OC-3. · CRC4 ADM. · No-CRC4 ADM. · ESF ADM. · SF ADM. · G.751ADM. · G.751 PLCP. · G.823 ADM. · C-bit ADM. · C-bit PLCP. · M23 ADM. · M23 PLCP.
Code | Line coding format of the interface: AMI, HDB3 or B8ZS.
Clock | Clock mode of the interface: master or slave.
Cable length | Cable mode of the interface: · long—Long-haul mode, with cable length in the range of 151 m (495.41 ft) to 500 m (1640.42 ft). · short—Short-haul mode, with cable length in the range of 0 to 150 m (492.13 ft).
Loopback | Loopback mode of the interface: · cell—Internal cell loopback. · local—Internal loopback. · payload—External payload loopback. · remote—External line loopback.
Line Error | Line error of the interface: · FERR—Framing bit error. · LCV—Line code violation. · CERR—CRC errors. · FEBE—Far-end block error.
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 seconds input rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec | Average input rates (in Bps, bps, and pps) for the last 300 seconds.
Last 300 seconds output rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec | Average output rates (in Bps, bps, and pps) for the last 300 seconds.
Input: 0 packets, 0 bytes, 0 buffers 0 errors, 0 crcs, 0 lens, 0 giants 0 pads, 0 aborts, 0 timeouts 0 overflows, 0 overruns, 0 no buffer | Packet input parameters: · packets—Number of total packets received. · bytes—Number of total bytes received. · buffers—Number of buffers used to receive packets. · errors—Number of error packets detected in the physical layer. · crcs—Number of CRC errors. · lens—Number of packets received in invalid lengths. · giants—Number of packets received in lengths exceeding the set value. · pads—Number of errors occurred in the packet padding process. · aborts—Number of anomalous errors. · timeouts—Number of timeout packets. · overflows—Number of chip FIFO overflow errors occurred in the receiving process. · overruns—Number of packets unprocessed due to high receiving rates exceeding the forwarding rate. · no buffer—Number of errors caused by insufficient system resources.
Output: 0 packets, 0 bytes, 0 buffers 0 errors, 0 overflows, 0 underruns | Packet output parameters: · packets—Number of total packets transmitted. · bytes—Number of total bytes transmitted. · buffers—Number of buffers used to transmit packets. · errors—Number of error packets detected in the physical layer. · overflows—Number of chip FIFO overflow errors occurred in the transmitting process. · underruns—Number of packets untransmitted because the interface reading rate was lower than the forwarding rate.
Brief information on interfaces in route mode | Brief information about Layer 3 interfaces.
Interface | Abbreviation of the 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.
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.
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. · Not connected—No physical connection exists (possibly because the network cable is disconnected or faulty).

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ATM interface commands -- Common ATM interface commands -- interface atm

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

Use undo interface atm to remove an ATM subinterface.

Syntax

interface atm { interface-number | interface-number.subnumber [ p2mp | p2p ] }

undo interface atm interface-number.subnumber

Default

No ATM subinterfaces exist.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

interface-number: Specifies an ATM interface by its number.

interface-number.subnumber: Specifies an ATM subinterface by its number. The interface-number argument represents the number of the ATM interface. The subnumber argument represents the number of the subinterface, in the range of 0 to 1023.

p2mp: Specifies a point-to-multipoint subinterface. A subinterface is P2MP type by default.

p2p: Specifies a point-to-point subinterface.

Examples

# Enter ATM 3/2/1 interface view.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1]

# Create ATM subinterface ATM 3/2/1.1 and enter its view.

<Sysname> system-view

[Sysname] interface atm3/2/1.1

[Sysname-ATM3/2/1.1]

ATM interface commands -- Common ATM interface commands -- mtu

Use mtu to set the MTU value for an interface.

Use undo mtu to restore the default.

Syntax

mtu size

undo mtu

Default

The MTU of an interface is 1500 bytes.

Views

ATM interface view (including 13 physical types: E1, T1, E3, T3, OC-3c/STM-1, OC-12c/STM-4, 25M, ADSL, ADSL 2+, G.SHDSL, SHDSL_4WIRE, SHDSL_4WIRE_BIS, and SHDSL_8WIRE_BIS)

ATM subinterface view

EFM interface view (including 4 physical types: G.SHDSL, SHDSL_4WIRE, SHDSL_4WIRE_BIS, and SHDSL_8WIRE_BIS)

EFM subinterface view

Predefined user roles

network-admin

mdc-admin

Parameters

size: Specifies the maximum transmission unit (MTU) in bytes. The value range for this argument varies by device model.

Usage guidelines

The MTU setting affects IP packet reassembly and fragmentation on the interface.

Examples

# Set the MTU of interface ATM 3/2/1 to 200 bytes.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] mtu 200

ATM interface commands -- Common ATM interface commands -- reset counters interface

Use reset counters interface to clear the statistics for an ATM interface.

Syntax

reset counters interface [ atm [ interface-number ] ]

Views

User view

Predefined user roles

network-admin

mdc-admin

Parameters

atm [ interface-number ]: Specifies an ATM interface by its number. If you do not specify the atm keyword, this command clears statistics for all interfaces. If you specify the atm keyword but do not specify the interface-number argument, this command clears statistics for all ATM interfaces.

Usage guidelines

Use this command to clear history statistics before you collect traffic statistics for a time period.

Examples

# Clear statistics for ATM 3/2/1.

<Sysname> reset counters interface atm 3/2/1

ATM interface commands -- Common ATM interface commands -- shutdown

Use shutdown to shut down an ATM interface.

Use undo shutdown to bring up an ATM interface.

Syntax

shutdown

undo shutdown

Default

An ATM interface is up.

Views

ATM interface view (including 13 physical types: E1, T1, E3, T3, OC-3c/STM-1, OC-12c/STM-4, 25M, ADSL, ADSL 2+, G.SHDSL, SHDSL_4WIRE, SHDSL_4WIRE_BIS, and SHDSL_8WIRE_BIS)

ATM subinterface view

EFM interface view (including 4 physical types: G.SHDSL, SHDSL_4WIRE, SHDSL_4WIRE_BIS, and SHDSL_8WIRE_BIS)

EFM subinterface view

Predefined user roles

network-admin

mdc-admin

Examples

# Shut down interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] shutdown

ATM interface commands -- ATM 25M, ATM OC-3c/STM-1, and ATM OC-12c/STM-4 interface commands -- clock

Use clock to set the clock mode for an ATM interface.

Use undo clock to restore the default.

Syntax

clock { master | slave }

undo clock

Default

The clock mode for an ATM interface is slave.

Views

ATM 25M interface view

ATM OC-3c/STM-1 interface view

ATM OC-12c/STM-4 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

master: Specifies the internal clock as the clock source.

slave: Specifies the line clock as the clock source.

Usage guidelines

The clock of the SONET/SDH network is more precise than the internal clock of ATM interfaces. When an ATM interface is connected to a SONET/SDH device, set the clock mode of the ATM interface to slave.

When the ATM interfaces on two devices are connected directly through a fiber-optic cable, set the clock mode to master at one end and to slave at the other end.

Examples

# Set the clock mode of interface ATM 3/2/1 to master.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] clock master

ATM interface commands -- ATM 25M, ATM OC-3c/STM-1, and ATM OC-12c/STM-4 interface commands -- flag

Use flag to set a SONET/SDH overhead byte.

Use undo flag to restore the default of the specified SONET/SDH overhead byte.

Syntax

flag c2 flag-value

undo flag c2

flag { j0 | j1 } { sdh | sonet } flag-value

undo flag { j0 | j1 } { sdh | sonet }

Default

The value of c2 is 13 (hexadecimal).

The system uses the SDH frame format. The default values for j0 and j1 vary by device model.

Views

ATM OC-3c/STM-1 interface view

ATM OC-12c/STM-4 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

c2 flag-value: Specifies the C2 byte. The C2 byte is a higher-order path overhead byte used to indicate the multiplex structure of virtual container (VC) frames and property of payload. It is a hexadecimal number in the range of 0 to ff.

j0 flag-value: Specifies the J0 byte. The J0 byte is a section overhead byte used to test continuity of the connection between two interfaces at the section level. If the sdh keyword is configured, the flag-value argument is a string of 1 to 15 hexadecimal digits. If the sonet keyword is configured, the argument is a hexadecimal number in the range of 0 to ff.

j1 flag-value: Specifies the J1 byte. The J1 byte is a higher-order path overhead byte used to test continuity of the connection between two interfaces at the path level. If the sdh keyword is configured, the flag-value argument is a string of 1 to 15 hexadecimal digits. If the sonet keyword is configured, the argument is a string of 1 to 62 characters.

sdh: Sets frame format to Synchronous Digital Hierarchy (SDH).

sonet: Sets frame format to Synchronous Optical Network (SONET).

Usage guidelines

The c2 and j1 settings on the sending and receiving ends must be the same.

The J0 byte can be any character in the network of the same carrier. On networks of two carriers, the sending and receiving devices at network borders must use the same J0 byte.

Examples

# Set the SDH overhead byte J0 of ATM 3/2/1 to ff (hexadecimal).

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] flag j0 sdh ff

ATM interface commands -- ATM 25M, ATM OC-3c/STM-1, and ATM OC-12c/STM-4 interface commands -- frame-format

Use frame-format to set the frame format of an ATM interface.

Use undo frame-format to restore the default.

Syntax

frame-format { sdh | sonet }

undo frame-format

Default

The frame format of an ATM interface is SDH.

Views

ATM OC-3c/STM-1 interface view

ATM OC-12c/STM-4 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

sdh: Sets the frame format to SDH.

sonnet: Sets the frame format to SONET.

Usage guidelines

The overhead bytes configured with the flag command must match the frame format.

Examples

# Set the frame format on interface ATM 3/2/1 to SDH.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] frame-format sdh

Related commands

flag

ATM interface commands -- ATM 25M, ATM OC-3c/STM-1, and ATM OC-12c/STM-4 interface commands -- link-delay

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

Use undo link-delay to restore the default.

Syntax

link-delay seconds

undo link-delay

Default

The default setting varies by device model.

Views

ATM OC-3c/STM-1 interface view

ATM OC-12c/STM-4 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

seconds: Specifies a physical state change suppression interval in seconds. The value range for this argument varies by device model.

Usage guidelines

When the physical state changes, an ATM interface reports the event to the upper-layer modules, and generates log and SNMP notification messages. To reduce system overhead caused by frequent physical state changes, use this command to suppress physical state changes within an interval. The interface will ignore any changes that occur during each suppression interval. When the suppression interval expires, the interface will not report the change event or generate messages if the change is removed.

For example, the suppression interval starts when the interface changes from up to down. The interface reports the change event and generates messages if it is still down when the interval expires. The interface does not report the change event or generate messages if it is up when the interval expires.

This command suppresses up state change, down state change, or both depending on the device model.

Examples

# Set the physical state change suppression interval to 20 seconds on interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] link-delay 20

ATM interface commands -- ATM 25M, ATM OC-3c/STM-1, and ATM OC-12c/STM-4 interface commands -- loopback

Use loopback to enable loopback and set the loopback mode on an ATM interface.

Use undo loopback to disable loopback on an ATM interface.

Syntax

loopback { cell | local | remote }

undo loopback

Default

Loopback is disabled on an ATM interface.

Views

ATM 25M interface view

ATM OC-3c/STM-1 interface view

ATM OC-12c/STM-4 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

cell: Enables internal cell loopback to check physical chips on the local end.

local: Enables internal loopback to check service chips on the local end.

remote: Enables external line loopback to check the remote end.

Usage guidelines

Loopback is intended for testing only. Disable loopback when the interface is operating correctly.

Examples

# Enable internal loopback on interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] loopback local

ATM interface commands -- ATM 25M, ATM OC-3c/STM-1, and ATM OC-12c/STM-4 interface commands -- scramble

Use scramble to enable payload scrambling on an ATM interface.

Use undo scramble to disable payload scrambling on an ATM interface.

Syntax

scramble

undo scramble

Default

Payload scrambling is enabled on an ATM interface.

Views

ATM OC-3c/STM-1 interface view

ATM OC-12c/STM-4 interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Payload scrambling enables an interface to scramble outgoing data and descramble incoming data. By preventing the presence of long strings of all 1s or all 0s, payload scrambling enables the receiving end to extract the line clock signal correctly.

If payload scrambling is disabled, the interface does not scramble outgoing data or descramble incoming data.

The payload scrambling setting must be the same at both ends of a link.

After payload scrambling is enabled or disabled on an interface, the C2 byte on the interface does not change automatically. Use the flag c2 command to set the same C2 byte on the interface as its peer.

The scramble command does not affect cell headers.

Examples

# Enable payload scrambling on interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] scramble

ATM interface commands -- ATM 25M, ATM OC-3c/STM-1, and ATM OC-12c/STM-4 interface commands -- threshold

| NOTE: Support for this command depends on the device model.

‌

Use threshold to configure the power for setting the SD or SF alarm threshold on an ATM interface.

Use undo threshold to restore the default power for setting the SD or SF alarm threshold on an ATM interface.

Syntax

threshold { sd sdvalue | sf sfvalue } *

undo threshold [ sd | sf ]

Default

The default setting varies by device model.

Views

ATM OC-3c/STM-1 interface view

ATM OC-12c/STM-4 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

sd: Sets the SD alarm threshold.

sdvalue: Specifies the power for setting the SD alarm threshold. The threshold is 10e to the power of negative sdvalue (10e–sdvalue). The value range for this argument varies by device model. The greater the value, the lower the SD alarm threshold.

sf: Sets the SF alarm threshold. The SF alarm threshold must be higher than the SD alarm threshold.

sfvalue: Specifies the power for setting the SF alarm threshold. The threshold is 10e to the power of negative sdvalue (10e–sfvalue). The value range for this argument varies by device model. The greater the value, the lower the SF alarm threshold.

Usage guidelines

SD and SF alarms indicate current line performance. SF alarms are more severe than SD alarms.

· An SD alarm occurs if the bit error rate reaches the SD alarm threshold.

· An SF alarm occurs if the bit error rate reaches the SF alarm threshold.

Examples

# Set the SD threshold to 10e to the power of negative 4 (10e–4) on ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] threshold sd 4

ATM interface commands -- ATM E1/ T1 interface commands -- cable

Use cable to set the cable mode for an ATM interface.

Use undo cable to restore the default.

Syntax

cable { long | short }

undo cable

Default

The long-haul mode applies.

Views

ATM E1 interface view

ATM T1 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

long: Specifies the long-haul mode, with cable length in the range of 151 m (495.41 in) to 500 m (1640.42 in). This mode supports automatic cable mode adaptation. By default, the long-haul mode applies. If the cable is shorter than 151 m, the system automatically switches to the short-haul mode.

short: Specifies the short-haul mode, with cable length in the range of 0 m to 150 m (492.13 in).

Examples

# Set the cable mode of ATM E1 interface ATM 3/2/1 to short-haul.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] cable short

ATM interface commands -- ATM E1/ T1 interface commands -- clock

Use clock to set the clock mode for an ATM interface.

Use undo clock to restore the default.

Syntax

clock { master | slave }

undo clock

Default

The clock mode for an ATM interface is slave.

Views

ATM E1 interface view

ATM T1 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

master: Specifies the internal clock as the clock source.

slave: Specifies the line clock as the clock source.

Usage guidelines

The clock of the PDH network is more precise than the internal clock of ATM interfaces. When an ATM interface is connected to a PDH device, set the clock mode of the ATM interface to slave.

When the ATM interfaces on two devices are connected directly through a fiber-optic cable, set the clock mode to master at one end and to slave at the other end.

Examples

# Set the clock mode of interface ATM 3/2/1 to master.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] clock master

ATM interface commands -- ATM E1/ T1 interface commands -- clock-change auto

Use clock-change auto to enable automatic clock mode change on an interface.

Use undo clock-change auto to disable automatic clock mode change.

Syntax

clock-change auto

undo clock-change auto

Default

Automatic clock mode change is disabled.

Views

ATM E1 interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

When automatic clock mode switchover is enabled, the ATM E1 interface automatically switches to the master clock mode when both of the following conditions exist:

· The interface uses the slave clock mode.

· The interface receives an AIS or LOS alarm.

After the alarm is cleared, the interface automatically switches back to the user-configured clock mode.

When automatic clock mode switchover is disabled, the interface uses the user-configured clock mode.

Examples

# Enable automatic clock mode change on ATM E1 interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] clock-change auto

Related commands

clock

ATM interface commands -- ATM E1/ T1 interface commands -- code

Use code to set the line coding format for an ATM interface.

Use undo code to restore the default line coding format.

Syntax

In ATM E1 interface view:

code { ami | hdb3 }

undo code

In ATM T1 interface view:

code { ami | b8zs }

undo code

Default

The line coding format of an ATM E1 interface is HDB3, and the line coding format of an ATM T1 interface is B8ZS.

Views

ATM E1 interface view

ATM T1 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

ami: Sets the ATM E1/T1 line coding format to alternate mark inversion (AMI).

hdb3: Sets the ATM E1 line coding format to high density bipolar 3 (HDB3).

b8zs: Sets the ATM T1 line coding format to bipolar 8-zero substitution (B8ZS).

Usage guidelines

Before you set the line coding format to AMI, make sure you have enabled payload scrambling on the interface with the scramble command.

The ATM interfaces on both ends must be configured with the same line coding format.

Examples

# Set the line coding format to AMI for interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] code ami

Related commands

scramble

ATM interface commands -- ATM E1/ T1 interface commands -- frame-format

Use frame-format to set the frame format for an ATM interface.

Use undo frame-format to restore the default.

Syntax

In ATM E1 interface view:

frame-format { crc4-adm | no-crc4-adm }

undo frame-format

In ATM T1 interface view:

frame-format { esf-adm | sf-adm }

undo frame-format

Default

The frame format of an ATM E1 interface is CRC4 ADM, and the frame format of an ATM T1 interface is ESF ADM.

Views

ATM E1 interface view

ATM T1 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

crc4-adm: Sets the frame format for an ATM E1 interface to CRC4 ADM.

no-crc4-adm: Sets the frame format for an ATM E1 interface to No-CRC4 ADM.

esf-adm: Sets the frame format for an ATM T1 interface to ESF ADM.

sf-adm: Sets the frame format for an ATM T1 interface to SF ADM.

Usage guidelines

ATM Direct Mapping (ADM) directly maps ATM cells transmitted over the E1/T1 line into E1/T1 frames. ITU-T G.804 and ATM forum define the ADM process and frame format. The system automatically selects the ADM mode according to the user-configured frame format.

ATM interfaces of both ends must be configured with the same frame format.

Examples

# Set the frame format for interface ATM 3/2/1 to No-CRC4 ADM.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] frame-format no-crc4-adm

ATM interface commands -- ATM E1/ T1 interface commands -- loopback

Use loopback to enable loopback on an ATM interface and set the loopback mode.

Use undo loopback to disable loopback on an ATM interface.

Syntax

loopback { cell | local | payload | remote }

undo loopback

Default

Loopback is disabled on an ATM interface.

Views

ATM E1 interface view

ATM T1 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

cell: Enables internal cell loopback to check physical chips on the local end.

local: Enables internal loopback to check service chips on the local end.

payload: Enables external payload loopback to check payload framing.

remote: Enables external line loopback to check the remote end.

Usage guidelines

Loopback is intended for testing. Disable loopback when the interface is operating correctly.

Examples

# Set interface ATM 3/2/1 to operate in external payload loopback mode.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] loopback payload

ATM interface commands -- ATM E1/ T1 interface commands -- scramble

Use scramble to enable payload scrambling on an ATM interface.

Use undo scramble to disable payload scrambling on an ATM interface.

Syntax

scramble

undo scramble

Default

Payload scrambling is enabled on an ATM interface.

Views

ATM E1 interface view

ATM T1 interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Payload scrambling enables an interface to scramble outgoing data and descramble incoming data. By preventing the presence of long strings of all 1s or all 0s, payload scrambling enables the receiving end to extract the line clock signal correctly.

If payload scrambling is disabled, the interface does not scramble outgoing data or descramble incoming data.

The payload scrambling setting must be the same at both ends of a link.

The scramble command does not affect cell headers.

Examples

# Enable payload scrambling on ATM E1 interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] scramble

ATM interface commands -- ATM E3/T3 interface commands -- cable

Use cable to set the cable mode for an ATM T3 interface.

Use undo cable to restore the default.

Syntax

cable { long | short }

undo cable

Default

The cable mode for an ATM T3 interface is short-haul.

Views

ATM T3 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

long: Specifies the long-haul mode, with cable length in the range of 151 m (495.41 ft) to 500 m (1640.42 ft).

short: Specifies the short-haul mode, with cable length in the range of 0 m to 150 m (492.13 ft).

Examples

# Set the cable mode of ATM T3 interface ATM 3/2/1 to long-haul.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] cable long

ATM interface commands -- ATM E3/T3 interface commands -- clock

Use clock to set the clock mode for an ATM interface.

Use undo clock to restore the default.

Syntax

clock { master | slave }

undo clock

Default

The clock mode for an ATM interface is slave.

Views

ATM E3 interface view

ATM T3 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

master: Specifies the internal clock as the clock source.

slave: Specifies the line clock as the clock source.

Usage guidelines

The clock of the PDH network is more precise than the internal clock of ATM interfaces. When an ATM interface is connected to a PDH device, set the clock mode of the ATM interface to slave.

When the ATM interfaces on two devices are connected directly through a fiber-optic cable, set the clock mode to master at one end and to slave at the other end.

Examples

# Set the clock mode of interface ATM 3/2/1 to master.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] clock master

ATM interface commands -- ATM E3/T3 interface commands -- frame-format

Use frame-format to set the frame format of an ATM interface.

Use undo frame-format to restore the default.

Syntax

In ATM E3 interface view:

frame-format { g751-adm | g751-plcp | g832-adm }

undo frame-format

In ATM T3 interface view:

frame-format { cbit-adm | cbit-plcp | m23-adm | m23-plcp }

undo frame-format

Default

The frame format of an ATM E3 interface is G.751 PLCP, and the frame format of an ATM T3 interface is C-bit PLCP.

Views

ATM E3 interface view

ATM T3 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

g751-adm: Sets the frame format for an ATM E3 interface to G.751 ATM direct mapping (G.751 ADM).

g751-plcp: Sets the frame format for an ATM E3 interface to G.751 physical layer convergence protocol (G.751 PLCP).

g832-adm: Sets the frame format for an ATM E3 interface to G.832 ADM.

cbit-adm: Sets the frame format for an ATM T3 interface to C-bit ADM.

cbit-plcp: Sets the frame format for an ATM T3 interface to C-bit PLCP.

m23-adm: Sets the frame format for an ATM T3 interface to M23 ADM.

m23-plcp: Sets the frame format for an ATM T3 interface to M23 PLCP.

Examples

# Set the frame format of ATM E3 interface ATM 3/2/1 to G.832 ADM.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] frame-format g832-adm

ATM interface commands -- ATM E3/T3 interface commands -- loopback

Use loopback to enable loopback on an ATM interface and set the loopback mode.

Use undo loopback to disable loopback on an ATM interface.

Syntax

loopback { cell | local | payload | remote }

undo loopback

Default

Loopback on an ATM interface is disabled.

Views

ATM E3 interface view

ATM T3 interface view

Predefined user roles

network-admin

mdc-admin

Parameters

cell: Enables internal cell loopback to check physical chips on the local end.

local: Enables internal loopback to check service chips on the local end.

payload: Enables external payload loopback to check payload framing.

remote: Enables external line loopback to check the remote end.

Usage guidelines

Loopback is intended for testing. Disable loopback when the interface is operating correctly.

Examples

# Enable external payload loopback on ATM T3 interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] loopback payload

ATM interface commands -- ATM E3/T3 interface commands -- scramble

Use scramble to enable payload scrambling for an ATM interface.

Use undo scramble to disable payload scrambling for an ATM interface.

Syntax

scramble

undo scramble

Default

Payload scrambling is enabled on an ATM interface.

Views

ATM E3 interface view

ATM T3 interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

Payload scrambling enables an interface to scramble outgoing data and descramble incoming data. By preventing the presence of long strings of all 1s or all 0s, payload scrambling enables the receiving end to extract the line clock signal correctly.

If payload scrambling is disabled, the interface does not scramble outgoing data or descramble incoming data.

The payload scrambling setting must be the same at both ends of a link.

The scramble command does not affect cell headers.

Examples

# Enable payload scrambling on interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] scramble

ATM interface commands -- ADSL interface commands -- activate

Use activate to activate an ADSL interface.

Use undo activate to deactivate an ADSL interface.

Syntax

activate

undo activate

Default

An ADSL interface is active.

Views

ATM ADSL interface view

ATM ADSL 2+ interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

An ADSL interface on a customer premises equipment (CPE) must be activated before it can transmit services.

Activation refers to the handshake training and information exchange process between the central office (CO) equipment and the CPE. During this process, the two parties examine the line distance and conditions against the line configuration template of the CO equipment. The template defines the ADSL criteria, channel mode, uplink and downlink speeds, and noise tolerance. The parties attempt to reach an agreement. If the activation succeeds, a connection is set up between the two parties for service transmission.

During the parameter negotiation process for line activation, typically the CO equipment provides parameters for the CPE. A line activation process starts from line negotiation until the line comes up. Typically the activation process lasts for 30 seconds.

Deactivation tears down the connection between the two parties. To transmit services, you must re-activate the interface.

Because an ADSL interface is always on, it transits to the active state automatically at startup and remains active as long as the link is in good condition. The device regularly tests the performance of the line. If the device finds that the line performance is deteriorating, it automatically deactivates, retrains, and then reactivates the line.

This command enables you to manually activate or deactivate an ADSL interface. It is intended for testing and troubleshooting.

Examples

# Activate ADSL interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm3/2/1

[Sysname-ATM3/2/1] activate

ATM interface commands -- ADSL interface commands -- adsl standard

Use adsl standard to set the standard for an ADSL interface.

Use undo adsl standard to restore the default.

Syntax

In ATM ADSL interface view:

adsl standard { auto | gdmt | glite | t1413 }

undo adsl standard

In ATM ADSL 2+ interface view:

adsl standard { auto | g9923 | g9925 | gdmt | glite | t1413 }

undo adsl standard

Default

The standard for an ADSL interface is auto-negotiation.

Views

ATM ADSL interface view

ATM ADSL 2+ interface view

Predefined user roles

network-admin

mdc-admin

Parameters

auto: Specifies the auto-negotiation mode. The ADSL interface automatically negotiates the standard with the remote end.

g9923: Specifies the ADSL2 (G992.3) standard.

g9925: Specifies the ADSL2+ (G992.5) standard.

gdmt: Specifies the G.DMT (G992.1) standard.

glite: Specifies the G.Lite (G992.2) standard.

t1413: Specifies the T1.413 standard.

Usage guidelines

The ADSL-I module does not support G.Lite (G992.2) standard and T1.413 standard.

The ADSL interfaces on the two ends must be configured with the same standard.

The standard that you specify takes effect when you re-activate the interface by either the shutdown and undo shutdown commands or the activate and undo activate commands.

Examples

# Apply the standard T1.413 on interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] adsl standard t1413

ATM interface commands -- ADSL interface commands -- adsl tx-attenuation

Use adsl tx-attenuation to set a transmission power attenuation for an ADSL interface.

Use undo adsl tx-attenuation to restore the default.

Syntax

adsl tx-attenuation attenuation

undo adsl tx-attenuation

Default

The transmission power attenuation is 0 (no attenuation) for an ADSL interface.

Views

ATM ADSL interface view

ATM ADSL 2+ interface view

Predefined user roles

network-admin

mdc-admin

Parameters

attenuation: Specifies the transmission power attenuation in the range of 0 to 12 dB.

Usage guidelines

A higher attenuation value means a lower transmission power. A high transmission power might affect the signals of other ADSL interfaces.

Examples

# Set the transmission power attenuation to 10 for ATM ADSL interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] adsl tx-attenuation 10

ATM interface commands -- ADSL interface commands -- display dsl configuration

Use display dsl configuration to display the configurations for an ADSL interface.

Syntax

display dsl configuration interface atm interface-number

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface atm interface-number: Specifies an ADSL interface by its number.

Examples

# Display the configurations for ADSL interface ATM 3/2/1.

<Sysname> display dsl configuration interface atm 3/2/1

Line Params Set by User:

Standard: T1.413

Annex: A

Coding Gain(dB): Auto

Tx Pow Attn(dB): 0

Bit-Swap: disable

Actual Config Near End Far End

Standard: T1.413 T1.413

Trellis Coding: Enable Enable

Vendor ID: 0x0039 0x0004

AS0 (DS) LS0(US)

Rate(Bytes): 238 26

Rate(kbps): 7616 832

Latency: Intlv Intlv

Table 4 Command output

Field | Description
The following configuration information is always displayed:
Standard | Available standard: · Auto-negotiation (default). · ADSL2 (G992.3). · ADSL2+ (G992.5). · G.DMT (G992.1). · G.Lite (G992.2). · T1.413. To set the available standard for an ADSL interface, use the adsl standard command.
Annex | Annex standard used by the line: · A—Annex A, indicating ADSL over POTS. · B—Annex B, indicating ADSL over ISDN. The value of this field is predefined and cannot be modified.
Coding Gain(dB) | Coding gain in dB. This field displays Auto if the interface automatically negotiates the coding gain. The value of this field is predefined and cannot be modified.
Tx Pow Attn(dB) | Transmission power attenuation in dB. The value of this field is predefined and cannot be modified.
Bit-Swap | Bit switch function state: enable or disable. The value of this field is predefined and cannot be modified.
The following information is displayed when the line is up:
Standard | Standard that takes effect on the interface: · Auto-negotiation (default). · ADSL2 (G992.3). · ADSL2+ (G992.5). · G.DMT (G992.1). · G.Lite (G992.2). · T1.413.
Trellis Coding | Trellis coding state: Enable or Disable.
Vendor ID | Vendor ID of the chip.
Rate(Bytes) | Negotiation rate in bytes: · AS0 (DS)—Downlink rate. · LS0 (US)—Uplink rate.
Rate(kbps) | Negotiation rate in kbps: · AS0 (DS)—Downlink rate. · LS0 (US)—Uplink rate.
Latency | Data coding mode: · Fast—Fast mode, with short line delay but low line quality. · Interleave—Interleave mode, with high error correction capacity but long line delay.

‌

| NOTE: The command output varies by chip model.

‌

ATM interface commands -- ADSL interface commands -- display dsl status

Use display dsl status to display the status information for an ADSL interface.

Syntax

display dsl status interface atm interface-number

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface atm interface-number: Specifies an ADSL interface by its number.

Examples

# Display the status information for ADSL interface ATM 3/2/1.

<Sysname> display dsl status interface atm 3/2/1

Line Status: Loss Of Signal

Training Status: Idle

Active Params Near End Far End

Standard: G.dmt G.dmt

SNR (dB): 0.0 0.0

Attn(dB): 0.0 0.0

Pwr(dBm): 0.0 0.0

Current Rate(kbps): 0 0

Latency: Intl Intl

Table 5 Command output

Field | Description
Line Status | ADSL line status: · No Defect. · Loss Of Frame. · Loss Of Signal. · Loss Of Power. · Loss Of Signal Quality. · Unknown.
Training Status | Status during the training with the digital subscriber line access multiplexer (DSLAM) equipment: · Idle. · G.994 Training. · G.992 Started. · G.922 Channel Analysis. · G.992 Message Exchange. · Showtime (normal data exchange). · Unknown.
The following information is displayed when the line is up:
Active Params | Near End indicates the downlink direction (in which packets are received). Far End indicates the uplink direction (in which packets are transmitted). Line activation parameters: · Standard—Standard for the connection between the ADSL interface and the DSLAM equipment. · SNR—Current SNR. A high SNR value indicates a good line condition. · Attn—Current attenuation. A large attenuation value indicates a poor line condition. · Pwr—Current transmission power in dbm. · Current Rate—ADSL line rate in kbps. · Latency—Data coding mode, including Intl and Fast.

‌

| NOTE: The command output varies by chip model.

‌

ATM interface commands -- ADSL interface commands -- display dsl version

Use display dsl version to display the version information and available capabilities for an ADSL interface.

Syntax

display dsl version interface atm interface-number

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface atm interface-number: Specifies an ADSL interface by its number.

Examples

# Display the version information and available capabilities for ADSL interface ATM 3/2/1.

<Sysname> display dsl version interface atm 3/2/1

ADSL board chipset and version info:

DSL Line Type: ADSL Over Pots

Chipset Vendor: BDCM

FW Release: A2pB017l.d15h

DSP Version: 17.1200

AFE Version: 1.0

Bootrom Version: 1.1

Hardware Version: 4.0

Driver Version: 1.3

CPLD Version: 1.0

ADSL Capability:

ANNEX Supported:

ANNEX A

Standard Supported:

ANSI T1.413 Issue 2

ITU G992.1(G.dmt)

ITU G992.2(G.lite)

ITU G992.3(Adsl2)

ITU G992.3(ReAdsl2)

ITU G992.5(Adsl2p)

Table 6 Command output

Field | Description
ADSL board chipset and version info | Version and vendor information about the ADSL card chipset.
DSL Line Type | DSL line type: · ADSL over ISDN—ADSL signals are transmitted at the high frequency ranges. ISDN signals are transmitted at the low frequency ranges. · ADSL Over Pots—ADSL over telephone line.
FW Release | Identification and version information about firmware.
ADSL Capability | Standards and annex standards supported by the interface.

‌

| NOTE: The command output varies by chip model.

‌

ATM interface commands -- G.SHDSL interface commands -- activate

Use activate to activate a G.SHDSL interface.

Use undo activate to deactivate a G.SHDSL interface.

Syntax

activate

undo activate

Default

A G.SHDSL interface is active.

Views

ATM G.SHDSL interface view

ATM SHDSL_4WIRE interface view

ATM SHDSL_4WIRE_BIS interface view

ATM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

A G.SHDSL interface on a CPE must be activated before it can transmit services.

Activation refers to the handshake training and information exchange process between the CO equipment and the CPE. During this process, the two parties examine the line distance and conditions against the line configuration template of the CO equipment. The template defines the SHDSL criteria, channel mode, uplink and downlink speeds, and noise tolerance. The parties attempt to reach an agreement. If the activation succeeds, a connection is set up between the two parties for service transmission.

During the parameter negotiation process for line activation, the CO equipment provides most parameters for the CPE. A line activation process starts from line negotiation until the line comes up. Typically the activation process lasts for 30 seconds.

Deactivation tears down the connection between the two parties. To transmit services, you must re-activate the interface.

Because a G.SHDSL interface is always on, it transits to the active state automatically at startup and remains active as long as the link is in good condition. The device regularly tests the performance of the line. If the device finds that the line performance is deteriorating, it automatically deactivates, retrains, and then reactivates the line.

This command enables you to manually activate or deactivate a G.SHDSL interface. It is intended for test and troubleshooting uses.

Examples

# Activate G.SHDSL interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] activate

ATM interface commands -- G.SHDSL interface commands -- display dsl configuration

Use display dsl configuration to display the configurations for a G.SHDSL interface.

Syntax

display dsl configuration interface atm interface-number

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface atm interface-number: Specifies a G.SHDSL interface by its number.

Examples

# Display the configurations for G.SHDSL interface ATM 3/2/1.

<Sysname> display dsl configuration interface atm 3/2/1

Line parameter and mode configuration:

Mode: CPE

Standard: G.991.2

Annex: B

Wire type: 2

Line rate: Auto Adaptive

Current margin: 2

SNEXT margin: 0

PSD mode: Sym PSD

Actual handshake status:

00: 0002 0000 0000 0000 0000 0000 0000 0000 0000 0000

10: 0000 0008 0000 0000 0000 0000 0000 0000 0008 0000

20: 0000 0000 0002 0002 0004 0010

Local handshake status:

00: 0002 0001 0000 0000 0000 0000 0034 003f 003f 003f

10: 003f 003f 0003 0034 003f 003f 003f 003f 003f 0003

20: 0000 0000 0003 0003 000f 0010

Remote handshake status:

00: 0002 0000 0000 0000 0000 0000 0030 003f 003f 003f

10: 003f 000f 0000 0030 003f 003f 003f 003f 000f 0000

20: 0000 0000 0003 0003 0003 0004 0010

Table 7 Command output

Field | Description
Mode | Operating mode: CPE or CO.
Standard | Available standard: · Auto-negotiation (default). · ADSL2 (G992.3). · ADSL2+ (G992.5). · G.DMT (G992.1). · G.Lite (G992.2). · T1.413. · G.BIS. The value of this field is predefined and cannot be modified.
Annex | Annex standard used by the line: · A—Annex A. · B—Annex B.
Wire type | Wire type: two-wire or four-wire.
Current margin | Current SNR margin.
SNEXT margin | Lowest SNR margin.
PSD mode | PSD mode: symmetric or asymmetric.

‌

| NOTE: The command output varies by chip model.

‌

ATM interface commands -- G.SHDSL interface commands -- display dsl status

Use display dsl status to display status information for a G.SHDSL interface.

Syntax

display dsl status interface atm interface-number

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface atm interface-number: Specifies a G.SHDSL interface by its number.

Examples

# Display status information for ATM 3/2/1 when this two-wire G.SHDSL interface is up.

<Sysname> display dsl status interface atm 3/2/1

Operating Mode: CPE

DSL Mode: SHDSL Annex B

Configured Wire Type: 2

Line A Statistics since last activation:

CRC: 0

LOSW Defect: 0

ES: 0

SES: 0

UAS: 0

TX EOC: 0

RX EOC: 0

Line A status:

Xcvr Op State: Data Mode

Last Fail Op State: 0x00

Line Rate(Kbps): 2312

Wire Type: 2

SNR Margin(dB): 16.30

Loop Attenuation(dB): 0.00

RecvGain(dB): 6.07

TxPower(dBm): 9.50

Power Backoff: enable

Power Backoff Level: 5

Tip/Ring Reversal: Reversed

FrmOH Stat: 0x00

Rmt Encoder A: 0x0000016e

Rmt Encoder B: 0x00000331

Rmt NSF Cusdata: 0x0000

Rmt NSF CusID: 0x0000

Rmt Country Code: 0x00b5

Rmt Provider Code: GSPN

Rmt Vendor Data: 0x12 0x34 0x56 0x78

0x12 0x34 0x56 0x78

# Display status information for ATM 3/2/1 when this four-wire G.SHDSL interface is up.

<Sysname> display dsl status interface atm 3/2/1

Operating Mode: CPE

DSL Mode: SHDSLAnnex B

Configured Wire Type: 4

Line A Statistics since last activation:

CRC: 0

LOSW Defect: 0

ES: 0

SES: 0

UAS: 0

TX EOC: 0

RX EOC: 0

Line A status:

Xcvr Op State: Data Mode

Last Fail Op State: 0x00

Line Rate(Kbps): 2312

Wire Type: 4

SNR Margin(dB): 13.30

Loop Attenuation(dB): 0.00

RecvGain(dB): 5.86

TxPower(dBm): 9.50

Power Backoff: enable

Power Backoff Level: 5

Tip/Ring Reversal: Reversed

FrmOH Stat: 0x00

Rmt Encoder A: 0x0000016e

Rmt Encoder B: 0x00000331

Rmt NSF Cusdata: 0x0000

Rmt NSF CusID: 0x0000

Rmt Country Code: 0x00b5

Rmt Provider Code: GSPN

Rmt Vendor Data: 0x12 0x34 0x56 0x78

0x12 0x34 0x56 0x78

Line B Statistics since last activation:

CRC: 1

LOSW Defect: 1

ES: 1

SES: 1

UAS: 0

TX EOC: 0

RX EOC: 0

Line B status:

Xcvr Op State: Data Mode

Last Fail Op State: 0x00

Line Rate(Kbps): 2312

Wire Type: 4

SNR Margin(dB): 12.30

Loop Attenuation(dB): 0.00

RecvGain(dB): 5.28

TxPower(dBm): 9.50

Power Backoff: enable

Power Backoff Level: 5

Tip/Ring Reversal: Reversed

FrmOH Stat: 0x00

Rmt Encoder A: 0x0000016e

Rmt Encoder B: 0x00000331

Rmt NSF Cusdata: 0x0000

Rmt NSF CusID: 0x0000

Rmt Country Code: 0x00b5

Rmt Provider Code: GSPN

Rmt Vendor Data: 0x12 0x34 0x56 0x78

0x12 0x34 0x56 0x78

Table 8 Command output

Field | Description
Operating Mode | Operating mode: CPE or CO.
DSL Mode | Annex standard adopted by the line: · SHDSL Annex A—Annex A. · SHDSL Annex B—Annex B.
Configured Wire Type | Wire type: two-wire or four-wire.
CRC | Number of CRC errors.
LOSW Defect | Number of LOSW errors.
ES | Number of errors per second.
SES | Number of serious errors per second.
UAS | Number of unavailable statuses per second.
TX EOC | Number of EOC cells transmitted.
RX EOC | Number of EOC cells received.
Xcvr Op State | Operating state of the transceiver: · Idle. · Data Mode. · HandShaking. · Training.
Last Fail Op State | Operating state of the transceiver during the last negotiation failure. Available values are the same as the values of Xcvr Op State.
Wire Type | Wire type: two-wire or four-wire.
RecvGain(dB) | Receive gain.
TxPower(dBm) | Transmit power.
Power Backoff | Power backoff state.
Tip/Ring Reversal | Tip/Ring reversal state.
FrmOH Stat | Frame overflow state.
Rmt Encoder A | Remote encoder coefficient A.
Rmt Encoder B | Remote encoder coefficient B.
Rmt NSF Cusdata | Remote user data in non-standard format.
Rmt NSF CusID | Remote user ID in non-standard format.
Rmt Country Code | Remote country code.
Rmt Provider Code | Remote chip provider code.
Rmt Vendor Data | Remote vendor code.

‌

| NOTE: The command output varies by chip model.

‌

ATM interface commands -- G.SHDSL interface commands -- display dsl version

Use display dsl version to display the version information and available capabilities for a G.SHDSL interface.

Syntax

display dsl version interface atm interface-number

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface atm interface-number: Specifies a G.SHDSL interface by its number.

Examples

# Display the version information and available capabilities for G.SHDSL interface ATM 3/2/1.

<Sysname> display dsl version interface atm 3/2/1

DSL Line Type: G.SHDSL

ATM SAR Device: 0x823614f1

ATM SAR Revision: 0x02

Chipset Vendor: GSPN

Firmware Rel-Rev: R2.3.1-0

DSP Version: 1

PCB Version: 0.0

CPLD Version: 0.0

Driver Version: 2.0

Hardware Version: 1.0

ITU G991.2 ANNEX A: Supported

ITU G991.2 ANNEX B: Supported

Table 9 Command output

Field | Description
ATM SAR Device | Identification of the SAR chip.
ATM SAR Revision | Revision identification of the SAR chip.
Firmware Rel-Rev | Identification and version information about firmware.
ITU G991.2 ANNEX A, ITU G991.2 ANNEX B | Available standards and annex standards.

‌

| NOTE: The command output varies by chip model.

‌

ATM interface commands -- G.SHDSL interface commands -- shdsl annex

Use shdsl annex to set the annex standard for a G.SHDSL interface.

Use undo shdsl annex to restore the default.

Syntax

shdsl annex { a | b }

undo shdsl annex

Default

The annex standard for a G.SHDSL interface is Annex B.

Views

ATM G.SHDSL interface view

ATM SHDSL_4WIRE interface view

ATM SHDSL_4WIRE_BIS interface view

ATM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

a: Specifies the Annex A standard.

b: Specifies the Annex B standard.

Usage guidelines

If the CO equipment and the CPE use different Annex standards, the line cannot be activated.

Annex A is dominant in North America and Annex B is dominant in Europe. When you set the annex standard, consider the standard used in your region.

Examples

# Set G.SHDSL interface ATM 3/2/1 to adopt annex A.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] shdsl annex a

ATM interface commands -- G.SHDSL interface commands -- shdsl capability

Use shdsl capability to set the capacity type for a G.SHDSL interface.

Use undo shdsl capability to restore the default.

Syntax

shdsl capability { auto | g-shdsl | g-shdsl-bis }

undo shdsl capability

Default

In CPE mode, the auto type is applied.

In CO mode, the g-shdsl-bis type is applied.

Views

ATM G.SHDSL interface view

ATM SHDSL_4WIRE interface view

ATM SHDSL_4WIRE_BIS interface view

ATM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

auto: Specifies the auto type.

g-shdsl: Specifies the G.SHDSL type.

g-shdsl-bis: Specifies the G.SHDSL.bis type.

Usage guidelines

In CPE mode, the g-shdsl, g-shdsl-bis, and auto keywords are available.

In CO mode, only the g-shdsl and g-shdsl-bis keywords are available.

When you configure the shdsl mode command, the default settings in each mode are automatically restored.

Interfaces on the two ends must be configured with the same capacity type.

Examples

# Set the capacity type for interface ATM 3/2/1 to G.SHDSL.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] shdsl capability g-shdsl

Related commands

shdsl mode

ATM interface commands -- G.SHDSL interface commands -- shdsl line-probing

Use the shdsl line-probing enable command to enable SHDSL line probing.

Use the undo shdsl line-probing enable command to disable SHDSL line probing.

Syntax

shdsl line-probing enable

undo shdsl line-probing enable

Default

SHDSL line probing is enabled.

Views

ATM G.SHDSL interface view

ATM SHDSL_4WIRE interface view

ATM SHDSL_4WIRE_BIS interface view

ATM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

With line probing enabled, the system performs the line probing function to find the optimal data transmission rate during line activation.

With line probing disabled, the system chooses the highest data transmission rate from the data transmission rates supported by both the CPE and CO. The amount of time available for activating the SHDSL lines is reduced because the line rate adaptation process is skipped.

Examples

# Disable SHDSL line probing on interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] undo shdsl line-probing enable

Related commands

activate

ATM interface commands -- G.SHDSL interface commands -- shdsl mode

Use shdsl mode to set the operating mode for a G.SHDSL interface.

Use undo shdsl mode to restore the default.

Syntax

shdsl mode { co | cpe }

undo shdsl mode

Default

A G.SHDSL interface operates in CPE mode.

Views

ATM G.SHDSL interface view

ATM SHDSL_4WIRE interface view

ATM SHDSL_4WIRE_BIS interface view

ATM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

co: Specifies the CO mode.

cpe: Specifies the CPE mode.

Usage guidelines

For a back-to-back connection, set one end to CO mode and the other end to CPE mode.

Examples

# Set the operating mode of interface ATM 3/2/1 to CO.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] shdsl mode co

ATM interface commands -- G.SHDSL interface commands -- shdsl pam

Use shdsl pam to set the pulse amplitude modulation (PAM) constellation for a G.SHDSL interface.

Use undo shdsl pam to restore the default.

Syntax

shdsl pam { 16 | 32 | auto }

undo shdsl pam

Default

A G.SHDSL interface automatically selects its PAM.

Views

ATM G.SHDSL interface view

ATM SHDSL_4WIRE interface view

ATM SHDSL_4WIRE_BIS interface view

ATM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

16: Specifies the 16-PAM constellation, where the rate range is 192 kbps to 3840 kbps.

32: Specifies the 32-PAM constellation, where the rate range is 768 kbps to 5696 in kbps.

auto: Enables automatic PAM constellation selection. If 32 PAM and 16 PAM are supported on both ends, 32 PAM is automatically selected.

Usage guidelines

PAM is a constellation-like coding format of digital lines.

Use this command to configure the digital signal modulation mode for PHY chips.

32 PAM constellation is not supported by interfaces with the G.SHDSL capacity type.

Examples

# Configure the 16-PAM constellation for interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] shdsl pam 16

Related commands

shdsl capability

ATM interface commands -- G.SHDSL interface commands -- shdsl pbo

Use shdsl pbo to tune the transmission power of a G.SHDSL interface.

Use undo shdsl pbo to restore the default.

Syntax

shdsl pbo { value | auto }

undo shdsl pbo

Default

A G.SHDSL interface automatically tunes its transmission power.

Views

ATM G.SHDSL interface view

ATM SHDSL_4WIRE interface view

ATM SHDSL_4WIRE_BIS interface view

ATM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

auto: Automatically tunes the transmission power.

value: Specifies a power backoff (PBO) value (in dB) to restrict the transmission power. The value range is 0 to 31.

Usage guidelines

A G.SHDSL interface automatically tunes its transmission power according to the line noise to ensure an appropriate signal-to-noise ratio. When the line noise is known or the automatically tuned value is inaccurate, use this command to tune the transmission power manually.

Examples

# Tune the transmission power of G.SHDSL interface ATM 3/2/1 to 20 dB.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] shdsl pbo 20

ATM interface commands -- G.SHDSL interface commands -- shdsl psd

Use shdsl psd to set the PSD for a G.SHDSL interface.

Use undo shdsl psd to restore the default.

Syntax

shdsl psd { asymmetry | symmetry }

undo shdsl psd

Default

The PSD of a G.SHDSL interface is in symmetric mode.

Views

ATM G.SHDSL interface view

ATM SHDSL_4WIRE interface view

ATM SHDSL_4WIRE_BIS interface view

ATM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

asymmetry: Specifies the asymmetric mode.

symmetry: Specifies the symmetric mode.

Usage guidelines

PSD is the amount of power per unit (density) of frequency (spectral) as a function of the frequency. PSD describes how the power of a time series is distributed with frequency.

Examples

# Set the PSD of G.SHDSL interface ATM 3/2/1 to asymmetric mode.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] shdsl psd asymmetry

ATM interface commands -- G.SHDSL interface commands -- shdsl rate

Use shdsl rate to set the single-pair interface rate for a G.SHDSL interface.

Use undo shdsl rate to restore the default.

Syntax

shdsl rate { rate | auto }

undo shdsl rate

Default

For ATM G.SHDSL, ATM SHDSL_4WIRE_BIS, and ATM SHDSL 8WIRE_BIS interfaces, the single-pair interface rate is automatically negotiated.

For ATM SHDSL_4WIRE interfaces, the single-pair interface rate is automatically negotiated in two-wire mode, and is 2312 kbps in other modes.

Views

ATM G.SHDSL interface view

ATM SHDSL_4WIRE interface view

ATM SHDSL_4WIRE_BIS interface view

ATM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

rate: Specifies the maximum single-pair rate for the G.SHDSL interface. The value range is 192 kbps to 2312 kbps for ATM G.SHDSL and ATM SHDSL_4WIRE interfaces. The value range is 192 kbps to 5696 kbps for ATM SDHSL_4WIRE_BIS and ATM SHDSL_8WIRE_BIS interfaces.

auto: Specifies the auto-negotiation mode.

Usage guidelines

The maximum downlink rate might not reach the specified rate because of the restriction imposed by the CO equipment and line conditions. If you select the auto mode, CPE and CO can negotiate a rate commensurate with the current line condition during the activation process. If fixed rates are set at both ends, the two parties negotiate a rate. If the lower rate of the two cannot be provided, the line cannot be activated.

· For four-wire (dual-pair) G.SHDSL interfaces, the interface rate is two times higher than the single-pair rate. For example, if you set the single-pair rate to 2312 kbps, the four-wire interface rate is 4624 kbps.

· Because four-wire G.SHDSL interfaces cannot negotiate a rate, do not specify the auto mode for them.

Examples

# Set ATM 3/2/1 to operate in the auto-negotiation mode.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] shdsl rate auto

ATM interface commands -- G.SHDSL interface commands -- shdsl snr-margin

Use shdsl snr-margin to set a margin to signal-to-noise ratio (SNR).

Use undo shdsl snr-margin to restore the default.

Syntax

shdsl snr-margin [ current current-margin-value ] [ snext snext-margin-value ]

undo shdsl snr-margin

Default

The target margin for the current SNR is 2.

The target margin for the lowest SNR is 0.

Views

ATM G.SHDSL interface view

ATM SHDSL_4WIRE interface view

ATM SHDSL_4WIRE_BIS interface view

ATM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

current current-margin-value: Specifies the target margin for the current SNR, in the range of 0 to 10. During SHDSL line training, this target margin is considered in addition to the current SNR threshold. A larger margin value results in increased link stability and enhanced noise suppression ability.

snext snext-margin-value: Specifies the target margin for the lowest SNR, in the range of 0 to 10. During SHDSL line training, this target margin is considered in addition to the lowest SNR threshold. A larger margin value results in increased link stability and enhanced noise suppression ability.

Usage guidelines

Setting the margin can affect the maximum rate of the line. When the line condition is good, you can set a small margin to obtain higher rates. When the line is noisy, a small margin might cause disconnections.

Examples

# Set the SNR margin to 5 for interface ATM 3/2/1.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] shdsl snr-margin current 5

ATM interface commands -- G.SHDSL interface commands -- shdsl wire

Use shdsl wire to set the wire mode for a four-wire SHDSL interface or an eight-wire SHDSL interface.

Use undo shdsl wire to restore the default.

Syntax

In ATM SHDSL_4WIRE interface view or ATM SHDSL_4WIRE_BIS interface view:

shdsl wire { 2 | 4-auto-enhanced | 4-enhanced | 4-standard }

undo shdsl wire

In ATM SHDSL_8WIRE_BIS interface view:

shdsl wire { 2 | 4-enhanced | 4-standard | 6 | 8 | auto }

undo shdsl wire

Default

An ATM SHDSL_4WIRE interface operates in the four-wire enhanced mode.

An ATM SHDSL 4WIRE_BIS interface operates in the four-wire standard mode.

An ATM SHDSL_8WIRE_BIS interface operates in the eight-wire mode.

Views

ATM SHDSL_4WIRE interface view

ATM SHDSL_4WIRE_BIS interface view

ATM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

2: Specifies the two-wire mode.

4-auto-enhanced: Specifies the four-wire automatic mode. The four-wire enhanced mode is used first when the local end negotiates with the remote end. If the remote end is operating in four-wire standard mode, the local end uses the four-wire standard mode for negotiation. Support for this keyword depends on the device model.

4-enhanced: Specifies the four-wire enhanced mode. In this mode, one pair of the four wires starts negotiation with the remote end first. Then the other pair starts negotiation with the remote end. Support for this keyword depends on the device model.

4-standard: Specifies the four-wire standard mode. In this mode, the two pairs of these four wires must start negotiation at the same time. In addition, the remote end must be set to operate in four-wire standard mode as well.

6: Specifies the six-wire mode.

8: Specifies the eight-wire mode.

auto: Specifies the automatic mode. The local end uses the operating mode of the remote end to negotiate with the remote end.

Usage guidelines

When you use the shdsl wire command, select the correct wire mode according to the configurations of the remote interface. If you cannot determine the wire mode of the remote interface, configure the local interface to operate in the auto mode.

Examples

# Set SHDSL_4WIRE ATM interface ATM 3/2/1 to operate in the four-wire automatic mode.

<Sysname> system-view

[Sysname] interface atm 3/2/1

[Sysname-ATM3/2/1] shdsl wire 4-auto-enhanced

ATM interface commands -- EFM interface commands -- display dsl configuration

Use display dsl configuration to display the configurations for an EFM interface.

Syntax

display dsl configuration interface efm interface-number

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface efm interface-number: Specifies an EFM interface by its number.

Examples

# Display the configurations for EFM interface EFM 3/2/1.

<Sysname> display dsl configuration interface efm 3/2/1

Line parameter and mode configuration:

Mode: CPE

Standard: G.991.2

Annex: B

Wire type: 2

Line rate: Auto Adaptive

Current margin: 2

SNEXT margin: 0

Psd mode: Sym PSD

Actual handshake status:

00: 0002 0000 0000 0000 0000 0000 0000 0000 0000 0000

10: 0000 0008 0000 0000 0000 0000 0000 0000 0008 0000

20: 0000 0000 0002 0002 0004 0010

Local handshake status:

00: 0002 0001 0000 0000 0000 0000 0034 003f 003f 003f

10: 003f 003f 0003 0034 003f 003f 003f 003f 003f 0003

20: 0000 0000 0003 0003 000f 0010

Remote handshake status:

00: 0002 0000 0000 0000 0000 0000 0030 003f 003f 003f

10: 003f 000f 0000 0030 003f 003f 003f 003f 000f 0000

20: 0000 0000 0003 0003 0004 0010

Table 10 Command output

Field | Description
Mode | Operating mode: CPE or CO.
Standard | Available standard: · Auto-negotiation (default). · ADSL2 (G992.3). · ADSL2+ (G992.5). · G.DMT (G992.1). · G.Lite (G992.2). · T1.413. · G.BIS. The value of this field is predefined and cannot be modified.
Annex | Annex standard used by the line: · A—Annex A. · B—Annex B.
Wire type | Wire type: two-wire or four-wire.
PSD mode | PSD mode: symmetric or asymmetric.

‌

| NOTE: The command output varies by chip model.

‌

ATM interface commands -- EFM interface commands -- display dsl status

Use display dsl status to display status information for an EFM interface.

Syntax

display dsl status interface efm interface-number

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface efm interface-number: Specifies an EFM interface by its number.

Examples

# Display status information for EFM 3/2/1 when this two-wire EFM interface is up.

<Sysname> display dsl status interface efm 3/2/1

Operating Mode: CPE

DSL Mode: SHDSL Annex B

Configured Wire Type: 2

Line A Statistics since last activation:

CRC: 0

LOSW Defect: 0

ES: 0

SES: 0

UAS: 0

TX EOC: 0

RX EOC: 0

Line A status:

Xcvr Op State: Data Mode

Last Fail Op State: 0x00

Line Rate(Kbps): 2312

Wire Type: 2

SNR Margin(dB): 16.30

Loop Attenuation(dB): 0.00

RecvGain(dB): 6.07

TxPower(dBm): 9.50

Power Backoff: enable

Power Backoff Level: 5

Tip/Ring Reversal: Reversed

FrmOH Stat: 0x00

Rmt Encoder A: 0x0000016e

Rmt Encoder B: 0x00000331

Rmt NSF Cusdata: 0x0000

Rmt NSF CusID: 0x0000

Rmt Country Code: 0x00b5

Rmt Provider Code: GSPN

Rmt Vendor Data: 0x12 0x34 0x56 0x78

0x12 0x34 0x56 0x78

# Display status information for EFM 3/2/1 when this four-wire EFM interface is up.

<Sysname> display dsl status interface efm 3/2/1

Operating Mode: CPE

DSL Mode: SHDSLAnnex B

Configured Wire Type: 4

Line A Statistics since last activation:

CRC: 0

LOS WDefect: 0

ES: 0

SES: 0

UAS: 0

TX EOC: 0

RX EOC: 0

Line A status:

Xcvr Op State: Data Mode

Last Fail Op State: 0x00

Line Rate(Kbps): 2312

Wire Type: 4

SNR Margin(dB): 13.30

Loop Attenuation(dB): 0.00

RecvGain(dB): 5.86

TxPower(dBm): 9.50

Power Backoff: enable

Power Backoff Level: 5

Tip/Ring Reversal: Reversed

FrmOH Stat: 0x00

Rmt Encoder A: 0x0000016e

Rmt Encoder B: 0x00000331

Rmt NSF Cusdata: 0x0000

Rmt NSF CusID: 0x0000

Rmt Country Code: 0x00b5

Rmt Provider Code: GSPN

Rmt Vendor Data: 0x12 0x34 0x56 0x78

0x12 0x34 0x56 0x78

Line B Statistics since last activation:

CRC: 1

LOSW Defect: 1

ES: 1

SES: 1

UAS: 0

TX EOC: 0

RX EOC: 0

Line B status:

Xcvr Op State: Data Mode

Last Fail Op State: 0x00

Line Rate(Kbps): 2312

Wire Type: 4

SNR Margin(dB): 12.30

Loop Attenuation(dB): 0.00

RecvGain(dB): 5.28

TxPower(dBm): 9.50

Power Backoff: enable

Power Backoff Level: 5

Tip/Ring Reversal: Reversed

FrmOH Stat: 0x00

Rmt Encoder A: 0x0000016e

Rmt Encoder B: 0x00000331

Rmt NSF Cusdata: 0x0000

Rmt NSF CusID: 0x0000

Rmt Country Code: 0x00b5

Rmt Provider Code: GSPN

Rmt Vendor Data: 0x12 0x34 0x56 0x78

0x12 0x34 0x56 0x78

Table 11 Command output

Field | Description
Operating Mode | Operating mode: CPE or CO.
DSL Mode | Annex standard adopted by the line: · A—Annex A. · B—Annex B.
Configured Wire Type | Wire type: two-wire or four-wire.
CRC | Number of CRC errors.
LOSW Defect | Number of LOSW errors.
ES | Number of errors per second.
SES | Number of serious errors per second.
UAS | Number of available statuses per second.
TX EOC | Number of ECO sources transmitted.
RX EOC | Number of ECO sources received.
Xcvr Op State | Operating state of the transceiver: · Idle. · Data Mode. · HandShaking. · Training.
Last Fail Op State | Operating state of the transceiver during the last negotiation failure. Available values are the same as the values of Xcvr Op State.
Wire Type | Wire type: two-wire or four-wire.
RecvGain(dB) | Receive gain.
TxPower(dBm) | Transmit power.
Power Backoff | Power backoff state.
Tip/Ring Reversal | Tip/Ring reversal state.
FrmOH Stat | Frame overflow state.
Rmt Encoder A | Remote encoder coefficient A.
Rmt Encoder B | Remote encoder coefficient B.
Rmt NSF Cusdata | Remote user data in non-standard format.
Rmt NSF CusID | Remote user ID in non-standard format.
Rmt Country Code | Remote country code.
Rmt Provider Code | Remote chip provider code.
Rmt Vendor Data | Remote vendor code.

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| NOTE: The command output varies by chip model.

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ATM interface commands -- EFM interface commands -- display dsl version

Use display dsl version to display the version information and available capabilities for an EFM interface.

Syntax

display dsl version interface efm interface-number

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

interface efm interface-number: Specifies an EFM interface by its number.

Examples

# Display the version information and available capabilities for interface EFM 3/2/1.

<Sysname> display dsl version interface efm 3/2/1

DSL Line Type: G.SHDSL

ATM SAR Device: 0x823614f1

ATM SAR Revision: 0x02

Chipset Vendor: GSPN

Firmware Rel-Rev: R2.3.1-0

DSP Version: 1

PCB Version: 0.0

CPLD Version: 0.0

Driver Version: 2.0

Hardware Version: 1.0

ITU G991.2 ANNEX A: Supported

ITU G991.2 ANNEX B: Supported

Table 12 Command output

Field | Description
ATM SAR Device | Identification of the SAR chip.
ATM SAR Revision | Revision identification of the SAR chip.
Chipset Vendor | Vendor identification of DSL Chipsets.
Firmware Rel-Rev | Identification and version information about firmware.
ITU G991.2 ANNEX A, ITU G991.2 ANNEX B | Standards and annex standards available on the interface.

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| NOTE: The command output varies by chip model.

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ATM interface commands -- EFM interface commands -- display interface efm

Use display interface efm to display information about an EFM interface.

Syntax

display interface [ efm [ interface-number ] ] [ brief [ description | down ] ]

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

efm [ interface-number ]: Specifies an EFM interface by its number. If you do not specify the efm keyword, this command displays information about all interfaces on the device. If you specify the efm keyword but do not specify the interface-number argument, this command displays information about all EFM interfaces.

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 interface descriptions.

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

Examples

# Display detailed information about interface EFM 3/2/1.

<Sysname> display interface efm 3/2/1

EFM3/2/1

Current state: DOWN

Line protocol state: DOWN

Description: EFM3/2/1 Interface

Bandwidth: 20000kbps

Maximum transmission unit: 1500

Internet protocol processing: Disabled

IP Packet Frame Type: Ethernet II, hardware address: b8af-67fa-10f0

IPv6 Packet Frame Type: Ethernet II, hardware address: b8af-67fa-10f0

2Wire-Shdsl Line, Operation State: DOWN_NOT_READY, Operating Mode: CO

Last link flapping: 4 days 6 hours 39 minutes

Last clearing of counters: Never

Last 300 seconds input rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec

Last 300 seconds output rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec

Input:

0 packets, 0 bytes, 0 buffers

0 errors, 0 crcs, 0 lens, 0 giants

0 pads, 0 aborts, 0 timeouts

0 overflows, 0 overruns, 0 no buffer

Output:

0 packets, 0 bytes, 0 buffers

0 errors, 0 overflows, 0 underruns

# Display brief information about interface EFM 3/2/1.

<Sysname> display interface efm 3/2/1 brief

Brief information on interfaces in route mode:

Link: ADM - administratively down; Stby - standby

Protocol: (s) - spoofing

Interface Link Protocol Primary IP Description

EFM3/2/1 UP UP(s) --

# Display brief information about all EFM interfaces in physically DOWN state and the causes.

<Sysname> display interface efm brief down

Brief information on interfaces in route mode:

Link: ADM - administratively down; Stby - standby

Interface Link Cause

EFM3/2/1 DOWN Not connected

Table 13 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). · 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. · DOWN—The data link layer protocol is down.
Description | Description of the interface.
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.
IPv6 Packet Frame Type | IPv6 packet framing format.
2Wire-Shdsl Line | Wire mode: · 2Wire-Shdsl. · 4Wire-Shdsl. · 6Wire-Shdsl. · 8Wire-Shdsl.
Operation State | Operating state: · DOWN_NOT_READY—The line is down and not ready. · DOWN_ READY—The line is down and ready. · INITIALIZING—The line is in negotiation. · UP_DATA_MODE—The line is up and in data mode.
Operating Mode | Operating mode: CO or CPE.
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 seconds input rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec | Average input rates (in Bps, bps, and pps) for the last 300 seconds.
Last 300 seconds output rate: 0.00 bytes/sec, 0 bits/sec, 0.00 packets/sec | Average output rates (in Bps, bps, and pps) for the last 300 seconds.
Input: 0 packets, 0 bytes, 0 buffers 0 errors, 0 crcs, 0 lens, 0 giants 0 pads, 0 aborts, 0 timeouts 0 overflows, 0 overruns, 0 no buffer | Packet receiving parameters: · packets—Number of total packets received. · bytes—Number of total bytes received. · buffers—Number of buffers used to receive packets. · errors—Number of error packets detected at the physical layer. · crcs—Number of CRC errors. · lens—Number of packets received with invalid lengths. · giants—Number of packets received with lengths exceeding the specified value. · pads—Number of errors occurred in the padding process. · aborts—Number of anomalous errors. · timeouts—Number of packet receiving timeouts. · overflows—Number of chip FIFO overflow errors occurred. · overruns—Number of packets not processed due to higher receiving rate than the forwarding rate. · no buffer—Number of errors caused by insufficient system resources.
Output: 0 packets, 0 bytes, 0 buffers 0 errors, 0 overflows, 0 underruns | Packet transmission parameters: · packets—Number of total packets transmitted. · bytes—Number of total bytes transmitted. · buffers—Number of buffers used to transmit packets. · errors—Number of error packets detected at the physical layer. · overflows—Number of chip FIFO overflow errors occurred. · underruns—Number of packets not transmitted due to lower memory reading rate than the forwarding rate.
Brief information on interfaces in route mode | Brief information about Layer 3 interfaces.
Interface | Abbreviation of the 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.
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.
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. · Not connected—No physical connection exists (possibly because the network cable is disconnected or faulty).

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ATM interface commands -- EFM interface commands -- interface efm

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

Use undo interface efm to remove an EFM subinterface.

Syntax

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

undo interface efm interface-number.subnumber

Default

No EFM subinterfaces exist.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

interface-number: Specifies an EFM interface by its number.

interface-number.subnumber: Specifies an EFM subinterface by its number. The interface-number argument represents the number of the EFM interface. The subnumber argument represents the number of the subinterface, in the range of 1 to 4094. You can create a maximum of 1024 EFM subinterfaces on an EFM interface.

Examples

# Enter EFM 3/2/1 interface view.

<Sysname> system-view

[Sysname] interface efm 3/2/1

[Sysname-EFM3/2/1]

# Create EFM subinterface EFM 3/2/1.1 and enter its view.

<Sysname> system-view

[Sysname] interface efm 3/2/1.1

[Sysname-EFM3/2/1.1]

ATM interface commands -- EFM interface commands -- shdsl annex

Use shdsl annex to set the annex standard for an EFM interface.

Use undo shdsl annex to restore the default.

Syntax

shdsl annex { a | b }

undo shdsl annex

Default

The annex standard for an EFM interface is Annex B.

Views

EFM G.SHDSL interface view

EFM SHDSL_4WIRE interface view

EFM SHDSL_4WIRE_BIS interface view

EFM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

a: Specifies the Annex A standard.

b: Specifies the Annex B standard.

Usage guidelines

Both Annex A and Annex B are G.991.2 standards. Annex A is dominant in North America and Annex B is dominant in Europe. When you set the annex standard, consider the standard used in your region.

A link with different standard types at two ends cannot be activated.

Examples

# Set EFM interface EFM 3/2/1 to use the Annex A standard.

<Sysname> system-view

[Sysname] interface efm 3/2/1

[Sysname-EFM3/2/1] shdsl annex a

ATM interface commands -- EFM interface commands -- shdsl capability

Use shdsl capability to set the capacity type for an EFM interface.

Use undo shdsl capability to restore the default.

Syntax

shdsl capability { auto | g-shdsl | g-shdsl-bis }

undo shdsl capability

Default

In CPE mode, the auto type is applied.

In CO mode, the g-shdsl-bis type is applied.

Views

EFM G.SHDSL interface view

EFM SHDSL_4WIRE interface view

EFM SHDSL_4WIRE_BIS interface view

EFM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

auto: Specifies the auto type.

g-shdsl: Specifies the G.SHDSL type.

g-shdsl-bis: Specifies the G.SHDSL.bis type.

Usage guidelines

In CPE mode, the g-shdsl, g-shdsl-bis, and auto keywords are available.

In CO mode, only the g-shdsl and g-shdsl-bis keywords are available.

When you configure the shdsl mode command, the default settings in each mode are automatically restored.

Interfaces on the two ends must be configured with the same capacity type.

Examples

# Set the capacity type for interface EFM 3/2/1 to G.SHDSL.

<Sysname> system-view

[Sysname] interface efm 3/2/1

[Sysname-EFM3/2/1] shdsl capability g-shdsl

Related commands

shdsl mode

ATM interface commands -- EFM interface commands -- shdsl line-probing

Use shdsl line-probing enable to enable SHDSL line probing.

Use undo shdsl line-probing enable to disable SHDSL line probing.

Syntax

shdsl line-probing enable

undo shdsl line-probing enable

Default

SHDSL line probing is enabled.

Views

EFM G.SHDSL interface view

EFM SHDSL_4WIRE interface view

EFM SHDSL_4WIRE_BIS interface view

EFM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Usage guidelines

With line probing enabled, the system performs the line probing function to find the optimal data transmission rate during line activation.

With line probing disabled, the system chooses the highest data transmission rate from the data transmission rates supported by both the CPE and CO. The amount of time available for activating the SHDSL lines is reduced because the line rate adaptation process is skipped.

Examples

# Disable SHDSL line probing on interface EFM 3/2/1.

<Sysname> system-view

[Sysname] interface efm 3/2/1

[Sysname-EFM3/2/1] undo shdsl line-probing enable

ATM interface commands -- EFM interface commands -- shdsl mode

Use shdsl mode to set the operating mode for an EFM interface.

Use undo shdsl mode to restore the default.

Syntax

shdsl mode { co | cpe }

undo shdsl mode

Default

The operating mode for an EFM interface is CPE mode.

Views

EFM G.SHDSL interface view

EFM SHDSL_4WIRE interface view

EFM SHDSL_4WIRE_BIS interface view

EFM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

co: Specifies the CO mode.

cpe: Specifies the CPE mode.

Usage guidelines

For a back-to-back connection, set one end to CO mode and the other end to CPE mode.

Examples

# Set the operating mode of interface EFM 3/2/1 to CO.

<Sysname> system-view

[Sysname] interface efm 3/2/1

[Sysname-EFM3/2/1] shdsl mode co

ATM interface commands -- EFM interface commands -- shdsl pam

Use shdsl pam to set the PAM constellation for an EFM interface.

Use undo shdsl pam to restore the default.

Syntax

shdsl pam { 16 | 32 | auto }

undo shdsl pam

Default

An EFM interface automatically selects its PAM.

Views

EFM G.SHDSL interface view

EFM SHDSL_4WIRE interface view

EFM SHDSL_4WIRE_BIS interface view

EFM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

16: Specifies the 16-PAM constellation, where the rate range is 192 kbps to 3840 kbps.

32: Specifies the 32-PAM constellation, where the rate range is 768 kbps to 5696 kbps.

auto: Enables automatic PAM constellation selection. If 32 PAM and 16 PAM are supported on both ends, 32 PAM is automatically selected.

Usage guidelines

PAM is a constellation-like coding format of digital lines.

Use this command to configure the digital signal modulation mode for PHY chips.

32 PAM constellation is not supported by interfaces with the G.SHDSL capacity type.

Examples

# Configure the 16-PAM constellation for interface EFM 3/2/1.

<Sysname> system-view

[Sysname] interface efm 3/2/1

[Sysname-EFM3/2/1] shdsl pam 16

Related commands

shdsl capability

ATM interface commands -- EFM interface commands -- shdsl pbo

Use shdsl pbo to set the power backoff (PBO) value.

Use undo shdsl pbo to restore the default.

Syntax

shdsl pbo { value | auto }

undo shdsl pbo

Default

An EFM interface automatically tunes its transmission power.

Views

EFM G.SHDSL interface view

EFM SHDSL_4WIRE interface view

EFM SHDSL_4WIRE_BIS interface view

EFM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

auto: Automatically tunes the transmission power.

value: Specifies a PBO value (in dB) to restrict the transmission power. The value range is 0 to 31.

Usage guidelines

An EFM interface automatically tunes its transmission power according to the line noise to ensure an appropriate signal-to-noise ratio. When the line noise is known or the automatically tuned value is inaccurate, use this command to tune the transmission power manually.

Examples

# Tune the transmission power of interface EFM 3/2/1 to 20 dB.

<Sysname> system-view

[Sysname] interface efm 3/2/1

[Sysname-EFM3/2/1] shdsl pbo 20

ATM interface commands -- EFM interface commands -- shdsl psd

Use shdsl psd to set the PSD mode for an EFM interface.

Use undo shdsl psd to restore the default.

Syntax

shdsl psd { asymmetry | symmetry }

undo shdsl psd

Default

The PSD of the EFM interface is in symmetric mode.

Views

EFM G.SHDSL interface view

EFM SHDSL_4WIRE interface view

EFM SHDSL_4WIRE_BIS interface view

EFM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

asymmetry: Specifies the asymmetric mode.

symmetry: Specifies the symmetric mode.

Usage guidelines

PSD is the amount of power per unit (density) of frequency (spectral) as a function of the frequency. PSD describes how the power of a time series is distributed with frequency.

Examples

# Set the PSD of interface EFM 3/2/1 to asymmetric mode.

<Sysname> system-view

[Sysname] interface efm 3/2/1

[Sysname-EFM3/2/1] shdsl psd asymmetry

ATM interface commands -- EFM interface commands -- shdsl rate

Use shdsl rate to set the single-pair interface rate for an EFM interface.

Use undo shdsl rate to restore the default.

Syntax

shdsl rate { rate | auto }

undo shdsl rate

Default

For EFM G.SHDSL, EFM SHDSL_4WIRE_BIS, and EFM SHDSL 8WIRE_BIS interfaces, the single-pair interface rate is automatically negotiated.

For EFM SHDSL_4WIRE interfaces, the single-pair interface rate is automatically negotiated in two-wire mode, and is 2312 kbps in other modes.

Views

EFM G.SHDSL interface view

EFM SHDSL_4WIRE interface view

EFM SHDSL_4WIRE_BIS interface view

EFM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

rate: Specifies the maximum single-pair rate for the EFM interface. The value range is 192 kbps to 2312 kbps for EFM G.SHDSL and EFM SHDSL_4WIRE interfaces. The value range is 192 kbps to 5696 kbps for EFM SDHSL_4WIRE_BIS and EFM SHDSL_8WIRE_BIS interfaces.

auto: Specifies the auto-negotiation mode.

Usage guidelines

The maximum downlink rate might not reach the specified rate because of the restriction imposed by the CO equipment and line conditions. If you select the auto mode, CPE and CO can negotiate a rate commensurate with the current line condition during the activation process. If fixed rates are set at both ends, the two parties negotiate a rate. In case the lower rate between them cannot be provided, the line cannot be activated.

· For four-wire (dual-pair) EFM interfaces, the interface rate is two times higher than the single-pair rate. For example, if you set the single-pair rate to 2312 kbps, the four-wire interface rate is 4624 kbps.

· Because four-wire EFM interfaces cannot negotiate a rate, do not specify the auto mode for them.

Examples

# Set EFM 3/2/1 to operate in the auto-negotiation mode.

<Sysname> system-view

[Sysname] interface efm 3/2/1

[Sysname-EFM3/2/1] shdsl rate auto

ATM interface commands -- EFM interface commands -- shdsl snr-margin

Use shdsl snr-margin to set a target margin to SNR.

Use undo shdsl snr-margin to restore the default.

Syntax

shdsl snr-margin [ current current-margin-value ] [ snext snext-margin-value ]

undo shdsl snr-margin

Default

The target margin for the current SNR is 2.

The target margin for the lowest SNR is 0.

Views

EFM G.SHDSL interface view

EFM SHDSL_4WIRE interface view

EFM SHDSL_4WIRE_BIS interface view

EFM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

current current-margin-value: Specifies the target margin for the current SNR, in the range of 0 to 10. During SHDSL line training, this target margin is considered in addition to the current SNR threshold. A larger margin value results in increased link stability and enhanced noise suppression ability.

snext snext-margin-value: Specifies the target margin for the lowest SNR, in the range of 0 to 10. During SHDSL line training, this target margin is considered in addition to the lowest SNR threshold. A larger margin value results in increased link stability and enhanced noise suppression ability.

Usage guidelines

Setting the margin can affect the maximum rate of the line. When the line condition is good, you can set a small margin to obtain higher rates. When the line is noisy, a small margin might cause disconnections.

Examples

# Set the SNR margin to 5 for interface EFM 3/2/1.

<Sysname> system-view

[Sysname] interface efm 3/2/1

[Sysname-EFM3/2/1] shdsl snr-margin current 5

ATM interface commands -- EFM interface commands -- shdsl wire

Use shdsl wire to set the wire mode for a four-wire EFM interface or an eight-wire EFM interface.

Use undo shdsl wire to restore the default.

Syntax

In EFM SHDSL_4WIRE interface view or EFM SHDSL_4WIRE_BIS interface view:

shdsl wire { 2 | 4-auto-enhanced | 4-enhanced | 4-standard } [ bind ]

undo shdsl wire

In EFM SHDSL_8WIRE_BIS interface view:

shdsl wire { 2 | 4-enhanced | 4-standard | 6 | 8 | auto } [ bind ]

undo shdsl wire

Default

The EFM SHDSL_4WIRE interface operates in four-wire enhanced mode.

The EFM SHDSL 4WIRE_BIS interface operates in four-wire standard mode.

The EFM SHDSL_8WIRE_BIS interface operates in eight-wire mode.

The wire pairs of the EFM interface operate in non-binding mode.

Views

EFM SHDSL_4WIRE interface view

EFM SHDSL_4WIRE_BIS interface view

EFM SHDSL_8WIRE_BIS interface view

Predefined user roles

network-admin

mdc-admin

Parameters

2: Specifies the two-wire mode.

4-auto-enhanced: Specifies the four-wire automatic mode. The four-wire enhanced mode is used first when the local end negotiates with the remote end. If the remote end is operating in four-wire standard mode, the local end uses the four-wire standard mode for negotiation. Support for this keyword depends on the device model.

4-enhanced: Specifies the four-wire enhanced mode. In this mode, one pair of the four wires starts negotiation with the remote end first, and then the other pair starts negotiation with the remote end. Support for this keyword depends on the device model.

4-standard: Specifies the four-wire standard mode. In this mode, the two pairs of these four wires must start negotiation at the same time. The remote end must be set to operate in four-wire standard mode.

6: Specifies the six-wire mode.

8: Specifies the eight-wire mode.

auto: Specifies the automatic mode. The local end uses the operating mode of the remote end to negotiate with the remote end.

bind: Specifies the binding mode for wire pairs. In this mode, the bit stream transmitted through a wire pair can be output through any line.

Usage guidelines

When you use the shdsl wire command, select the correct wire mode according to the configurations of the remote interface. If you are not sure of the wire mode of the remote end, use the automatic mode for the local end to negotiate with the remote end.

The operating mode of the local wire pairs must be consistent with the operating mode of the CO equipment.

Examples

# Set four-wire EFM interface EFM 3/2/1 to operate in the four-wire automatic mode, and set the operating mode of the wire pairs to bind.

<Sysname> system-view

[Sysname] interface efm 3/2/1

[Sysname-EFM3/2/1] shdsl wire 4-auto-enhanced bind

ATM interface commands -- EFM interface commands -- sub-interface rate-statistic

| NOTE: Support for this command depends on the device model.

‌

Use sub-interface rate-statistic to enable subinterface rate statistics collection on an EFM interface.

Use undo sub-interface rate-statistic to disable subinterface rate statistics collection on an EFM interface.

Syntax

sub-interface rate-statistic

undo sub-interface rate-statistic

Default

Subinterface rate statistics collection is disabled on an EFM interface.

Views

EFM G.SHDSL interface view

EFM SHDSL_4WIRE interface view

EFM SHDSL_4WIRE_BIS interface view

EFM SHDSL_8WIRE_BIS 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 subinterface rate statistics collection on EFM 3/2/1.

<Sysname> system-view

[Sysname] interface efm 3/2/1

[Sysname-EFM3/2/1] sub-interface rate-statistic