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AR500, AR510, and AR530 V200R007 Commands Reference

This document describes all the configuration commands of the device, including the command function, syntax, parameters, views, default level, usage guidelines, examples, and related commands.
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VDSL Interface Configuration Commands

VDSL Interface Configuration Commands

The AR509GW-L-D-H, AR509G-L-D-H, support VDSL interfaces.

adsl bitswap (vdsl)

Function

The adsl bitswap command enables or disables bit exchange on a VDSL interface.

By default, bit exchange is enabled on a VDSL interface.

Format

adsl bitswap { off | on }

Parameters

Parameter

Description

Value

off

Disables bit exchange on a VDSL interface.

-

on

Enables bit exchange on a VDSL interface.

-

Views

VDSL interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

During line activation, every sub-channel calculates the signal-to-noise ratio (SNR) and the number of bits to be transmitted. After the line is activated, the SNR may change because the external environment changes. For example, the SNRs of some sub-channels reduce, whereas the SNRs of some other sub-channels increase. After a long period of time, the line may be disconnected.

The bit exchange function has the following advantages:

  • Allows sub-channels failing to transmit the specified number of bits to switch some bits to sub-channels with higher SNRs.

  • Reduces the transmit power of sub-channels with higher SNRs to increase the sending rate and SNRs of sub-channels with lower SNRs.

    This reduces the bit error rate without triggering line negotiation.

Prerequisites

The VDSL interface has been deactivated by using the shutdown command.

Follow-up Procedure

To make bit exchange take effect immediately on a VDSL interface, run the undo shutdown command to activate the VDSL interface.

Precautions

Bit exchange must be enabled on devices on both ends of a line and takes effect only after the line is activated.

Example

# Disable bit exchange on VDSL interface 1/0/0.

<Huawei> system-view
[Huawei] interface atm 1/0/0
[Huawei-Atm1/0/0] shutdown
[Huawei-Atm1/0/0] adsl bitswap off
[Huawei-Atm1/0/0] undo shutdown

adsl sra (vdsl)

Function

The adsl sra command enables or disables seamless rate adaptation on a VDSL interface.

By default, seamless rate adaptation is disabled on a VDSL interface.

Format

adsl sra { off | on }

Parameters

Parameter

Description

Value

off

Disables seamless rate adaptation on a VDSL interface.

-

on

Enables seamless rate adaptation on a VDSL interface.

-

Views

VDSL interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When the external environment changes, to prevent the line disconnection, use the bit exchange function to adjust bit distribution or the power among sub-channels without deactivating the line. The bit exchange function, however, cannot change the line rate. When the line environment becomes worse, the bit exchange function cannot meet the requirement for the bit error rate. The bit exchange function just allows the line to be activated at a smaller rate. When the line environment becomes better, the bit exchange function cannot adjust the rate, wasting line resources.

Seamless rate adaptation solves the preceding problem. It dynamically adjusts the line rate without reactivating the line.

Prerequisites

The VDSL interface has been deactivated by using the shutdown command.

Follow-up Procedure

To make seamless rate adaptation take effect immediately on a VDSL interface, run the undo shutdown command to activate the VDSL interface.

Precautions

Seamless rate adaptation must be enabled on devices on both ends of a line and takes effect only after the line is activated.

Example

# Enable seamless rate adaptation on VDSL interface 1/0/0.

<Huawei> system-view
[Huawei] interface atm 1/0/0
[Huawei-Atm1/0/0] shutdown
[Huawei-Atm1/0/0] adsl sra on
[Huawei-Atm1/0/0] undo shutdown

adsl standard (vdsl)

Function

The adsl standard command configures a transmission standard for a VDSL interface in ATM mode.

The undo adsl standard command restores the default setting.

By default, a VDSL interface in ATM mode transmission standard is auto.

Format

undo adsl standard

Parameters

Parameter

Description

Value

adsl2

Configures ADSL2 (G.992.3) for a VDSL interface.

ADSL2 provides fast transmission rates by improving the modulation rate, coding gain, and initialization state machine, reducing the frame overhead, and using enhanced signal processing methods. ADSL2 can provide a maximum of 1 Mbit/s upstream transmission rate and 12 Mbit/s downstream transmission rate.

-

adsl2+

Configures ADSL2+ (G.992.5) for a VDSL interface.

ADSL2+ expands the frequency band to 2.208 MHz and provides a maximum of 1 Mbit/s upstream transmission rate and 24 Mbit/s downstream transmission rate.

-

annexm

Supports the expansion of upstream frequency band of ADSL2 or ADSL2+ and provides a maximum of 2 Mbit/s upstream transmission rate.

-

annexl

Configures reach extended ADSL2 (AnnexL for short) for a VDSL interface.

AnnexL is defined in ADSL2 recommendation. It uses a narrower frequency band and optimizes the power spectral density (PSD) mask to provide long-distance transmission of high performance.

-

auto

Configures a VDSL interface to automatically use the transmission standard of the remote VDSL interface.

If this parameter is specified, the device selects the same transmission standard as a DSLAM from G.DMT, ADSL2, AnnexL, ADSL2+, AnnexM, and T1.413.

-

gdmt

Configures G.DMT (G.992.1) for a VDSL interface.

G.DMT provides an upstream frequency band from 25 kHz to 138 kHz, a downstream frequency band from 138 kHz to 1.104 MHz, a maximum of 1 Mbit/s upstream transmission rate, and a maximum of 8 Mbit/s downstream transmission rate.

-

t1413

Configures T1.413 for a VDSL interface.

When an ADSL interface uses T1.413, the ADSL interface works in full rate mode, and provides a maximum of 800 kbit/s upstream transmission rate and 8 Mbit/s downstream transmission rate.

-

Views

VDSL interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

To enable the device to transmit services on a VDSL line, run the adsl standard command to configure the device to use the same transmission standard as a DSLAM. You are advised to configure the device to automatically use the transmission standard of the DSLAM.

Prerequisites

The VDSL interface has been deactivated by using the shutdown command.

Follow-up Procedure

To make the transmission standard configured for a VDSL interface take effect, run the undo shutdown command on the interface to activate the interface.

Example

# Configure T1.413 for VDSL interface 1/0/0.

<Huawei> system-view
[Huawei] set workmode slot 1 vdsl atm
Warning: Changing the working mode will reset the board in slot 1. Continue? [y/
n]:y                                                                            
INFO: Resetting board[1] succeeded. 
[Huawei] interface atm 1/0/0
[Huawei-Atm1/0/0] shutdown
[Huawei-Atm1/0/0] adsl standard t1413
[Huawei-Atm1/0/0] undo shutdown

adsl trellis (vdsl)

Function

The adsl trellis command enables or disables trellis coding on a VDSL interface in ATM mode.

By default, trellis coding is enabled on a VDSL interface in ATM mode.

Format

adsl trellis { off | on }

Parameters

Parameter

Description

Value

off

Disables trellis coding on a VDSL interface.

-

on

Enables trellis coding on a VDSL interface.

-

Views

VDSL interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

Trellis coding increases the signal noise ratio (SNR) by using a coding algorithm with a high coding efficiency. After trellis coding is enabled, the line activation rate is greatly increased.

Prerequisites

The VDSL interface has been deactivated by using the shutdown command.

Follow-up Procedure

To make trellis coding take effect immediately on a VDSL interface, run the undo shutdown command to activate the VDSL interface.

Precautions

Trellis coding must be enabled on devices on both ends of a line and takes effect only after the line is activated.

As specified in ADSL2 (G.992.3) and ADSL2+ (G.992.5) standards, trellis coding must be enabled. Under normal circumstances, it is recommended that you do not disable trellis coding; otherwise, interface connection problems may occur.

Example

# Disable trellis coding on VDSL interface 1/0/0.

<Huawei> system-view
[Huawei] interface atm 1/0/0
[Huawei-Atm1/0/0] shutdown
[Huawei-Atm1/0/0] adsl trellis off
[Huawei-Atm1/0/0] undo shutdown
Related Topics

display dsl interface atm (vdsl)

Function

The display dsl interface atm command displays information about a VDSL interface in ATM mode.

Format

display dsl interface atm interface-number

Parameters

Parameter

Description

Value

interface-number

Specifies the interface number of the VDSL interface in ATM mode.

-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

The display dsl interface atm command displays the training status, transmission standard, line status, performance statistics, bit exchange status, seamless rate adaptation status, trellis coding status, and board version of the VDSL interface.

Example

# Display information about VDSL interface 1/0/0 in ATM mode.

<Huawei> display dsl interface atm 1/0/0
 --------------------------------------------------------------                 
 DSL driver and PHY status                                                      
      Training Status                      : Showtime                           
      Transmission Mode                    : ADSL2                              
      Line Status                          : No Defect                          
      Downstream max. attainable rate(Kbps): 132740                             
      Upstream max. attainable rate(Kbps)  : 44503                              
      Downstream actual net data rate(Kbps): 51399                              
      Upstream actual net data rate(Kbps)  : 25708                              
      Downstream SNR margin(dB)            : 28.8                               
      Upstream SNR margin(dB)              : 27.0                               
      Downstream attenuation(dB)           : 0.0                                
      Upstream attenuation(dB)             : 0.0                                
      Downstream output power(dBm)         : 7.5                                
      Upstream output power(dBm)           : -4.8                               
      Downstream total cells               : 826623466                          
      Upstream total cells                 : 413437274                          
      Downstream data cells                : 672651340                          
      Upstream data cells                  : 246036145                          
      Downstream bit errors                : 0                                  
      Upstream bit errors                  : 0                                  
      Total drop cells                     : 0                                  
      Downstream total ES count            : 0                                  
      Upstream total ES count              : 0                                  
      Downstream total SES count           : 0                                  
      Upstream total SES count             : 0                                  
      Downstream total UAS count           : 31                                 
      Upstream total UAS count             : 31                                 
      Total AS count                       : 6820                               
                                                                                
 Line modulations                                                               
      G.Dmt                                : Enabled                            
      T1.413                               : Enabled                            
      ADSL2                                : Enabled                            
      AnnexL                               : Enabled                            
      ADSL2+                               : Enabled                            
      AnnexM                               : Enabled                            
                                                                                
 Line capability                                                                
      Bitswap                              : On                                 
      SRA                                  : Off                                
      Trellis coding                       : On                                 
                                                                                
 Board version                                                                  
      vendor ID                            : BDCM:0x938f                                                                            
      vendor number                        : 0x938f  
      Board ID:                            : 963281TAN                          
      Software version                     : 4.06L.03                           
      Bootloader (CFE) version             : 1.0.37-106.24                      
      DSL PHY and driver version           : A2pD033a.d23c                      
      Build timestamp                      : 20110221_2122   

 ATU-C version                                                                                                                      
      vendor ID                            : BDCM:0x938f                                                                            
      vendor number                        : 0x938f  
 --------------------------------------------------------------
Table 4-25  Description of the display dsl interface atm 1/0/0 command output
Item

Sub-item

Description

DSL driver and PHY status

Training Status

Training status of the VDSL interface:

  • Idle: indicates that the VDSL interface is idle.

  • Training: indicates that the VDSL interface is negotiating with the remote VDSL interface.

  • Showtime: indicates that negotiation between the two VDSL interfaces succeeds.

NOTE:

Other sub-items of DSL driver and PHY status can be displayed only after negotiation between the local and remote VDSL interfaces succeeds.

Transmission mode

Transmission standard of the VDSL interface:
  • ADSL2: provides a maximum of 1 Mbit/s upstream transmission rate and 12 Mbit/s downstream transmission rate.
  • ADSL2 AnnexM: expands the upstream frequency band of ADSL2 and provides a maximum of 2 Mbit/s upstream transmission rate.
  • RE-ADSL2: is defined in ADSL2 recommendation. It uses a narrower frequency band and optimizes the power spectral density (PSD) mask to provide long-distance transmission of high performance.
  • ADSL2+: provides a maximum of 1 Mbit/s upstream transmission rate and 24 Mbit/s downstream transmission rate.
  • ADSL2+ AnnexM: expands the upstream frequency band of ADSL2+ and provides a maximum of 2 Mbit/s upstream transmission rate.
  • G.DMT: provides a maximum of 1 Mbit/s upstream transmission rate and 8 Mbit/s downstream transmission rate.
  • T1.413: provides a maximum of 800 kbit/s upstream transmission rate and 8 Mbit/s downstream transmission rate.
To configure the transmission standard, run the adsl standard (vdsl) command.

Line Status

Line status of the VDSL interface:

  • No Defect: indicates that the VDSL interface has been activated.

  • Loss of Frame: indicates that frames are lost.

  • Loss of Signal: indicates that signals are lost.

  • Loss of Power: indicates that the device is powered off.

  • Loss of Signal Quality: indicates that the signal quality is low.

Downstream max. attainable rate(Kbps)

Maximum downstream transmission rate (in kbit/s).

Upstream max. attainable rate(Kbps)

Maximum upstream transmission rate (in kbit/s).

Downstream actual net data rate(Kbps)

Actual downstream transmission rate (in kbit/s).

Upstream actual net data rate(Kbps)

Actual upstream transmission rate (in kbit/s).

Downstream SNR margin(dB)

Downstream noise margin (dB).

Upstream SNR margin(dB)

Upstream noise margin (dB).

Downstream attenuation(dB)

Downstream attenuation (dB).

Upstream attenuation(dB)

Upstream attenuation (dB).

Downstream output power(dB)

Downstream output power (dB).

Upstream output power(dB)

Upstream output power (dB).

Downstream total cells

Total number of downstream cells.

Upstream total cells

Total number of upstream cells.

Downstream data cells

Number of downstream data cells.

Upstream data cells

Number of upstream data cells.

Downstream bit errors

Downstream bit errors.

Upstream bit errors

Upstream bit errors.

Total drop cells

Total number of dropped cells.

Downstream total ES count

Total number of downstream errored seconds.

Upstream total ES count

Total number of upstream errored seconds.

Downstream total SES count

Total number of downstream severely errored seconds.

Upstream total SES count

Total number of upstream severely errored seconds.

Downstream total UAS count

Total number of downstream unavailable seconds.

Upstream total UAS count

Total number of upstream unavailable seconds.

Total AS count

Total number of available seconds.

Line modulations

G.Dmt

Status of the transmission standards supported by the VDSL interface:
  • If the device is configured to automatically adapt to the transmission standard of the DSLAM, G.Dmt, T1.413, ADSL2, AnnexL, ADSL2+, and AnnexM are enabled. The device then selects the same transmission standard as the DSLAM from the preceding transmission standards. You can know which transmission standard is selected by viewing the Transmission mode field.
  • If a transmission standard is specified for the VDSL interface, only this transmission standard is enabled.

T1.413

ADSL2

AnnexL

ADSL2+

AnnexM

Line capability

Bitswap

Bit exchange status:
  • On: enabled
  • Off: disabled
To configure bit exchange, run the adsl bitswap (vdsl) command.

SRA

Seamless rate adaptation status:
  • On: enabled
  • Off: disabled
To configure seamless rate adaptation, run the adsl sra (vdsl) command.

Trellis coding

Trellis coding status:
  • On: enabled
  • Off: disabled
To configure trellis coding, run the adsl trellis (vdsl) command.

Board version

vendor ID

ID of the peer-side chip vendor.

vendor number

Sequence number of the peer-side chip vendor.

Board ID

Board ID.

Software version

System software version.

Bootloader (CFE) version

BootRom version.

DSL PHY and driver version

Board driver version.

Build timestamp

Time the board is registered.

ATU-C version

vendor ID

ID of the peer-side chip vendor.

vendor number

Sequence number of the peer-side chip vendor.

Related Topics

display dsl interface ethernet (vdsl)

Function

The display dsl interface ethernet command displays information about a VDSL interface in PTM mode.

Format

display dsl interface ethernet interface-number

Parameters

Parameter

Description

Value

interface-number

Specifies the interface number of the VDSL interface in PTM mode.

-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

The display dsl interface ethernet command displays the training status, transmission standard, line status, performance statistics, bit exchange status, seamless rate adaptation status, trellis coding status, and board version of the VDSL interface.

Example

# Display information about VDSL interface 0/0/0 in PTM mode.

<Huawei> display dsl interface ethernet 0/0/0
 --------------------------------------------------------------
 DSL driver and PHY status
      Line0:
      Training status                      : Showtime
      Transmission mode                    : VDSL2
      VDSL2 profile                        : Profile 17a
      Line status                          : No Defect
      Downstream max. attainable rate(Kbps): 142372
      Upstream max. attainable rate(Kbps)  : 63853
      Downstream actual net data rate(Kbps): 60016
      Upstream actual net data rate(Kbps)  : 20013
      Downstream SNR margin(dB)            : 28.8
      Upstream SNR margin(dB)              : 31.9
      Downstream attenuation(dB)           : 0.0
      Upstream attenuation(dB)             : 0.0
      Downstream output power(dBm)         : 14.5
      Upstream output power(dBm)           : -6.4
      Downstream total cells               : 1348781845
      Upstream total cells                 : 0
      Downstream data cells                : 0
      Upstream data cells                  : 0
      Downstream bit errors                : 0
      Upstream bit errors                  : 0
      Total drop cells                     : 0
      Downstream total ES count            : 60
      Upstream total ES count              : 0
      Downstream total SES count           : 59
      Upstream total SES count             : 0
      Downstream total UAS count           : 849
      Upstream total UAS count             : 849
      Total AS count                       : 86128

      Line1:
      Training status                      : Showtime
      Transmission mode                    : VDSL2
      VDSL2 profile                        : Profile 17a
      Line status                          : No Defect
      Downstream max. attainable rate(Kbps): 145984
      Upstream max. attainable rate(Kbps)  : 64009
      Downstream actual net data rate(Kbps): 60016
      Upstream actual net data rate(Kbps)  : 20013
      Downstream SNR margin(dB)            : 28.0
      Upstream SNR margin(dB)              : 32.4
      Downstream attenuation(dB)           : 0.0
      Upstream attenuation(dB)             : 0.0
      Downstream output power(dBm)         : 13.1
      Upstream output power(dBm)           : -6.5
      Downstream total cells               : 1360438742
      Upstream total cells                 : 0
      Downstream data cells                : 0
      Upstream data cells                  : 0
      Downstream bit errors                : 0
      Upstream bit errors                  : 0
      Total drop cells                     : 0
      Downstream total ES count            : 59
      Upstream total ES count              : 0
      Downstream total SES count           : 56
      Upstream total SES count             : 0
      Downstream total UAS count           : 683
      Upstream total UAS count             : 683
      Total AS count                       : 86230

 Line capability
      Bitswap                              : On
      SRA                                  : Off
      Trellis coding                       : On

 Board version
      vendor ID                            : 0xB5 0 "BDCM" 0 0
      vendor serial                        : 10000000000000000000000000000000
      Board ID                             : 963168MBV_17A
      Software version                     : 4.12L.08
      Bootloader (CFE) version             : 1.0.38-112.118
      DSL PHY and driver version           : A2pvbF038j.d24h
      Build timestamp                      : 20130706_1814

 ATU-C version                                                                                                                      
      vendor ID                            : BDCM:0x938f                                                                            
      vendor number                        : 0x938f  
 --------------------------------------------------------------     
Table 4-26  Description of the display dsl interface ethernet 0/0/0 command output
Item

Sub-item

Description

DSL driver and PHY status

Line0

One of two lines of the VDSL interface in PTM mode, Line0.

Training Status

Training status of the VDSL interface:

  • Idle: indicates that the VDSL interface is idle.

  • Training: indicates that the VDSL interface is negotiating with the remote VDSL interface.

  • Showtime: indicates that negotiation between the two VDSL interfaces succeeds.

NOTE:

Other sub-items of DSL driver and PHY status can be displayed only after negotiation between the local and remote VDSL interfaces succeeds.

Transmission mode

Transmission standard of the VDSL interface:

  • VDSL2: provides a maximum of 100 Mbit/s upstream transmission rate and 100 Mbit/s downstream transmission rate.
  • VDSL2 AnnexA: provides a maximum of 100 Mbit/s upstream transmission rate and 100 Mbit/s downstream transmission rate, supports VDSL2, and is compatible with POTS services.
  • VDSL2 AnnexB: provides a maximum of 100 Mbit/s upstream transmission rate and 100 Mbit/s downstream transmission rate, supports VDSL2, and is compatible with ISDN services.

VDSL2 profile

Spectrum distribution profile.

Line Status

Line status of the VDSL interface:

  • No Defect: indicates that the VDSL interface has been activated.

  • Loss of Frame: indicates that frames are lost.

  • Loss of Signal: indicates that signals are lost.

  • Loss of Power: indicates that the device is powered off.

  • Loss of Signal Quality: indicates that the signal quality is low.

Downstream max. attainable rate(Kbps)

Maximum downstream transmission rate (in kbit/s).

Upstream max. attainable rate(Kbps)

Maximum upstream transmission rate (in kbit/s).

Downstream actual net data rate(Kbps)

Actual downstream transmission rate (in kbit/s).

Upstream actual net data rate(Kbps)

Actual upstream transmission rate (in kbit/s).

Downstream SNR margin(dB)

Downstream noise margin (dB).

Upstream SNR margin(dB)

Upstream noise margin (dB).

Downstream attenuation(dB)

Downstream attenuation (dB).

Upstream attenuation(dB)

Upstream attenuation (dB).

Downstream output power(dBm)

Downstream output power (dB).

Upstream output power(dBm)

Upstream output power (dB).

Downstream total cells

Total number of downstream cells.

Upstream total cells

Total number of upstream cells.

Downstream data cells

Number of downstream data cells.

Upstream data cells

Number of upstream data cells.

Downstream bit errors

Downstream bit errors.

Upstream bit errors

Upstream bit errors.

Total drop cells

Total number of dropped cells.

Downstream total ES count

Total number of downstream errored seconds.

Upstream total ES count

Total number of upstream errored seconds.

Downstream total SES count

Total number of downstream severely errored seconds.

Upstream total SES count

Total number of upstream severely errored seconds.

Downstream total UAS count

Total number of downstream unavailable seconds.

Upstream total UAS count

Total number of upstream unavailable seconds.

Total AS count

Total number of available seconds.

Line1

One of two lines of the VDSL interface in PTM mode, Line1.

Line capability

Bitswap

Bit exchange status:
  • On: enabled
  • Off: disabled
To configure bit exchange, run the adsl bitswap (vdsl) command.

SRA

Seamless rate adaptation status:
  • On: enabled
  • Off: disabled
To configure seamless rate adaptation, run the adsl sra (vdsl) command.

Trellis coding

Trellis coding status:
  • On: enabled
  • Off: disabled
To configure trellis coding, run the adsl trellis (vdsl) command.
Board version vendor ID Vendor ID.
vendor serial Device serial number.
Board ID

Board ID.

Software version

System software version.

Bootloader (CFE) version

BootROM version.

DSL PHY and driver version

Board driver version.

Build timestamp

Time the board is registered.

ATU-C version

vendor ID

ID of the peer-side chip vendor.

vendor number

Sequence number of the peer-side chip vendor.

display interface atm (vdsl)

Function

The display interface atm command displays the configuration and status of a VDSL interface.

Format

display interface atm interface-number

Parameters

Parameter

Description

Value

interface-number

Specifies the number of a VDSL interface.

-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

When monitoring the interface status or locating faults on a VDSL interface, run the display interface atm command on the interface. You can collect traffic statistics and locate faults on the interface according to the command output.

Prerequisites

The VDSL interface is working in ATM mode.

Example

# Display the configuration and status of VDSL interface 1/0/0.

<Huawei> display interface atm 1/0/0
Atm1/0/0 current state : DOWN                    
Line protocol current state : DOWN                           
Description:HUAWEI,  Series, Atm1/0/0 Interface
Route Port,The Maximum Transmit Unit is 1500                      
Internet Address is 1.1.1.1/24                                 
AAL enabled: AAL5, Maximum PVCs: 16                              
PVCs on main-interface: 1 (Total PVCs: 4)                    
Last physical up time   : 2012-12-31 17:46:27                    
Last physical down time : 2013-01-04 16:56:29                     
Current system time: 2013-01-06 14:06:26                          
                                                               
Port PHY type    : VDSL                                         
The physical up times since the system startup : 1               
Last 300 seconds input rate 0 bits/sec, 0 packets/sec               
Last 300 seconds output rate 0 bits/sec, 0 packets/sec               
                                                                   
Input:  211359250 packets, 30040764364 bytes                    
  OAM Cells:            1918511,  ASM Cells:                   0    
  Packet Errors:              4,  Packet Discards:              4    
  Cell Errors:              636                                 
                                                                   
Output:  211353924 packets, 30617567900 bytes                      
  OAM Cells:            1918502,  ASM Cells:                   0     
  Packet Errors:              0,  Packet Discards:              0    
    Input bandwidth utilization  :    0%                        
    Output bandwidth utilization :    0%       
Table 4-27  Description of the display interface atm command output

Item

Description

Atm1/0/0 current state

Physical status of ATM1/0/0:
  • UP: indicates that the interface is physically Up.

  • DOWN: indicates that the interface is physically Down.

  • Administratively down: indicates that the network administrator has run the shutdown command on the interface.

Line protocol current state

Link layer protocol status of the interface:
  • UP: indicates that the link layer protocol status of the interface is Up.

  • DOWN: indicates that the link layer protocol status of the interface is Down or no IP address is assigned to the interface.

Description

Interface description. The description contains a maximum of 242 case-sensitive characters, with spaces supported. This field describes functions of the VDSL interface.

The Maximum Transmit Unit is

Maximum transmit unit (MTU) of the interface. By default, the MTU is 1488 bytes. Packets whose size is greater than the MTU are fragmented before being transmitted. If non-fragmentation is configured, these packets are discarded.

Internet Address is

IP address of the interface. If no IP address is assigned to the interface, the system displays "Internet protocol processing : disabled".

AAL enabled

ATM Adaptation Layer (AAL).

NOTE:
The device supports only AAL5.

Maximum PVCs

Maximum number of virtual circuits (PVCs).

PVCs on main-interface: (Total PVCs:)

Number of PVCs on the main interface (total number of PVCs on both the main interface and sub-interfaces).

Last physical up time

Last time the interface went Up physically. If the value of this field is displayed as "-", the physical status of the interface does not change.

If the time zone is configured and the daylight saving time is used, the time is in YYYY-MM-DD HH:MM:SS UTC±HH:MM DST format.

Last physical down time

Last time the interface went Down physically. If the value of this field is displayed as "-", the physical status of the interface does not change.

If the time zone is configured and the daylight saving time is used, the time is in YYYY-MM-DD HH:MM:SS UTC±HH:MM DST format.

Current system time

Current system time.

If the time zone is configured and the daylight saving time is used, the time is in YYYY-MM-DD HH:MM:SS UTC±HH:MM DST format.

Port PHY type

Physical type of the interface.

The physical uptimes since the system startup

Number of times that interface becomes Up after the system starts.

OAM Cells

Number of OAM cells.

ASM Cells

Number of incoming autonomous status message (ASM) cells.

Packet Errors

Number of error packets.

Packet Discards

Number of discard packets.

Cell Errors

Number of error cells.

Input bandwidth utilization

Percentage of the incoming packet rate to the total bandwidth.

Output bandwidth utilization

Percentage of the outgoing packet rate to the total bandwidth.

Related Topics

display interface ethernet (vdsl)

Function

The display interface ethernet command displays the configuration and status of a VDSL interface working in PTM mode.

Format

display interface ethernet interface-number

Parameters

Parameter

Description

Value

interface-number

Specifies the number of a VDSL interface working in PTM mode.

-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

When monitoring the interface status or locating faults on a VDSL interface, run the display interface ethernet command on the interface. You can collect traffic statistics and locate faults on the interface according to the command output.

Prerequisites

The VDSL interface is working in PTM mode.

Example

# Display the configuration and status of VDSL interface 1/0/0 working in PTM mode.

<Huawei> display interface ethernet 1/0/0
Ethernet1/0/0 current state : UP                                                
Line protocol current state : DOWN                                              
Description:HUAWEI,  Series, Ethernet1/0/0 Interface                          
Route Port,The Maximum Transmit Unit is 1500                                    
Internet protocol processing : disabled                                         
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 5678-9876-2345 
Last physical up time   : 2011-01-03 17:40:01                                   
Last physical down time : 2011-01-03 17:39:33                                   
Current system time: 2011-01-03 18:24:47 

Port PHY type    : VDSL                                                         
Last 300 seconds input rate 0 bits/sec, 0 packets/sec                           
Last 300 seconds output rate 0 bits/sec, 0 packets/sec                          
                                                                                
Input:  0 packets, 0 bytes                                                      
  OAM Cells:                  0,  ASM Cells:                   0                
  Packet Errors:              0,  Cell Errors:                 0                
                                                                                
Output:  0 packets, 0 bytes                                                     
  OAM Cells:                  0,  ASM Cells:                   0                
    Input bandwidth utilization  :    0%                                        
    Output bandwidth utilization :    0%                                        
Table 4-28  Description of the display interface ethernet command output

Item

Description

Ethernet1/0/0 current state

Physical status of Ethernet1/0/0:
  • UP: indicates that the interface is physically Up.

  • DOWN: indicates that the interface is physically Down.

  • Administratively down: indicates that the network administrator has run the shutdown command on the interface.

Line protocol current state

Link layer protocol status of the interface:
  • UP: indicates that the link layer protocol status of the interface is Up.

  • DOWN: indicates that the link layer protocol status of the interface is Down or no IP address is assigned to the interface.

Description

Interface description.

The Maximum Transmit Unit is

Maximum transmit unit (MTU) of the interface. By default, the MTU is 1488 bytes. Packets whose size is greater than the MTU are fragmented before being transmitted. If non-fragmentation is configured, these packets are discarded.

Internet protocol processing

  • If no IP address is assigned to the interface, the system displays "disable."
  • If an IP address is assigned to the interface, the IP address and subnet mask are displayed.

IP Sending Frames' Format is

Format of the frame contained in the sent IP packet.

Last physical up time

Last time the interface went Up physically. If the value of this field is displayed as "-", the physical status of the interface does not change.

If the time zone is configured and the daylight saving time is used, the time is in YYYY-MM-DD HH:MM:SS UTC±HH:MM DST format.

Last physical down time

Last time the interface went Down physically. If the value of this field is displayed as "-", the physical status of the interface does not change.

If the time zone is configured and the daylight saving time is used, the time is in YYYY-MM-DD HH:MM:SS UTC±HH:MM DST format.

Current system time

Current system time.

If the time zone is configured and the daylight saving time is used, the time is in YYYY-MM-DD HH:MM:SS UTC±HH:MM DST format.

Port PHY type

Physical port type.

OAM Cells

Number of OAM cells.

ASM Cells

Number of incoming autonomous status message (ASM) cells.

Packet Errors

Number of error packets.

Cell Errors

Number of error cells.

Input bandwidth utilization

Percentage of the incoming packet rate to the total bandwidth.

Output bandwidth utilization

Percentage of the outgoing packet rate to the total bandwidth.

interface atm (vdsl)

Function

The interface atm command displays the view of a VDSL interface working in ATM mode.

Format

interface atm interface-number

Parameters

Parameter

Description

Value

interface-number

Specifies the number of a VDSL interface working in ATM mode.

-

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

The interface atm command displays the view of a VDSL interface working in ATM mode.

Prerequisites

The VDSL interface has been configured to work in ATM mode by using the set workmode vdsl command.

By default, VDSL interfaces on a VDSL board work in ATM mode.

Example

# Enter the view of VDSL interface 1/0/0 working in ATM mode.

<Huawei> system-view
[Huawei] set workmode slot 1 vdsl atm
Warning: Changing the working mode will reset the board in slot 1. Continue? [y/
n]:y                                                                            
INFO: Resetting board[1] succeeded. 
[Huawei] interface atm 1/0/0
[Huawei-Atm1/0/0] 
Related Topics

interface ethernet (vdsl)

Function

The interface ethernet command displays the view of a VDSL interface working in PTM mode.

Format

interface ethernet interface-number

Parameters

Parameter

Description

Value

interface-number

Specifies the number of a VDSL interface working in PTM mode.

-

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

The interface ethernet command displays the view of a VDSL interface working in PTM mode.

Prerequisites

The VDSL interface has been configured to work in PTM mode by using the set workmode vdsl command.

By default, VDSL interfaces on a VDSL board work in PTM mode.

Example

# Enter the view of VDSL interface 1/0/0 working in PTM mode.

<Huawei> system-view
[Huawei] set workmode slot 1 vdsl ptm
Warning: Changing the working mode will reset the board in slot 1. Continue? [y/
n]:y                                                                            
INFO: Resetting board[1] succeeded. 
[Huawei] interface ethernet 1/0/0
[Huawei-Ethernet1/0/0] 
Related Topics

mtu (vdsl)

Function

The mtu command sets the maximum transmission unit (MTU) for a VDSL interface.

The undo mtu command restores the default MTU.

By default, the MTU of a VDSL interface is 1500 bytes.

Format

mtu mtu

undo mtu

Parameters

Parameter

Description

Value

mtu

Specifies the MTU of a VDSL interface.

The value is an integer, in bytes.

  • If VDSL interfaces work in ATM mode, the value is ranging from 128 to 1700.
  • If VDSL interfaces work in PTM mode, the value is ranging from 46 to 1700.
  • If VDSL interfaces work in ATM mode, the value is ranging from 128 to 1610.
  • If VDSL interfaces work in PTM mode, the value is ranging from 46 to 1610.

Views

VDSL interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

The size of data frames is limited at the network layer. Any time the IP layer receives an IP packet, it checks to which local interface the packet needs to be sent and obtains the MTU configured on the interface. Then the IP layer compares the MTU with the packet length. If the packet length is longer than the MTU, the IP layer fragments the packet into smaller packets, which are shorter than the MTU.

If forcible unfragmentation is configured, some packets may be discarded during data transmission at the IP layer. Therefore, large packets must be forcibly fragmented to prevent packet loss on the network. In this case, you can run the mtu command to set the size of a fragment.

Follow-up Procedure

Run the shutdown and undo shutdown commands to restart the related physical interface to make the configuration take effect.

Precautions

If you run the mtu command multiple times in the same VDSL interface view, only the latest configuration takes effect.

Example

# Set the MTU of a VDSL interface to 1200 bytes.

<Huawei> system-view
[Huawei] interface atm 1/0/0
[Huawei-Atm1/0/0] mtu 1200
[Huawei-Atm1/0/0] shutdown
[Huawei-Atm1/0/0] undo shutdown

set workmode vdsl

Function

The set workmode vdsl command configures the working mode for a VDSL interface.

By default, a VDSL interface works in PTM mode.

Format

set workmode slot slot-id vdsl { atm | ptm }

Parameters

Parameter Description Value
slot-id

Specifies the slot ID of the VDSL interface.

-
{ atm | ptm }

Specifies the working mode of the VDSL interface.

  • If atm is specified, the VDSL interface works in ATM mode. To transmit ATM cells on a VDSL interface, configure the interface to work in ATM mode.
  • If ptm is specified, the VDSL interface works in PTM mode. To transmit Ethernet frames on a VDSL interface, configure the interface to work in PTM mode.
-

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

The device aggregates service traffic to a DSLAM by using VDSL interfaces. To enable the device to transmit services on a VDSL line, run the set workmode vdsl command to configure the same working mode as the DSLAM for the device.

Follow-up Procedure
  • Run the interface atm command to enter the interface view if the VDSL interface works in ATM mode.

  • Run the interface ethernet command to enter the interface view if the VDSL interface works in PTM mode.

Precautions

After run the set workmode vdsl command, reset the VDSL interface card and wait for a while for the configuration to take effect.

Example

# Set the working mode to PTM for the VDSL interface in slot 1.
<Huawei> system-view
[Huawei] set workmode slot 1 vdsl ptm 
Warning: Changing the working mode will reset the board in slot 1. Continue? [y/
n]:y                                                                            
INFO: Resetting board[1] succeeded. 

shutdown (vdsl)

Function

The shutdown command deactivates a VDSL interface.

The undo shutdown command activates a VDSL interface.

By default, a VDSL interface is activated.

Format

shutdown

undo shutdown

Parameters

None

Views

VDSL interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

VDSL interfaces must be activated before transmitting services. Activation of a VDSL interface refers to the training between a DSLAM and a CPE. During the training, the two devices check the line distance and status based on parameters such as the transmission standard, upstream and downstream line rates, and specified noise margin to determine whether they can work properly under the existing conditions. If the training succeeds, the VDSL interface on the CPE is activated and can transmit services between the two devices.

The device functions as a CPE and aggregates services to a DSLAM by using a VDSL interface.

After the device starts, its VDSL interface is automatically activated. The VDSL interface remains activated as long as its VDSL line works properly. To enable the device to communicate with a DSLAM, run the shutdown command to deactivate the VDSL interface on the device, set parameters for the interface, and then reactivate this interface to make configurations take effect.

Follow-up Procedure

After a VDSL interface is deactivated, it is disconnected from a DSLAM. To enable the VDSL interface to transmit services, reactivate this VDSL interface.

Example

# Activate VDSL interface 1/0/0.

<Huawei> system-view
[Huawei] interface atm 1/0/0
[Huawei-Atm1/0/0] undo shutdown
Related Topics

vdsl standard

Function

The vdsl standard command configures a transmission standard for a VDSL interface in PTM mode.

The undo vdsl standard command restores the default setting.

By default, a VDSL interface in PTM mode automatically uses the transmission standard of the peer interface.

Format

vdsl standard vdsl2 { annexa | annexb }

undo vdsl standard

Parameters

Parameter

Description

Value

vdsl2

Configures VDSL2 (G993.2) for a VDSL interface in PTM mode.

VDSL2 provides a maximum of 100 Mbit/s upstream transmission rate and 100 Mbit/s downstream transmission rate.

-

annexa

Supports VDSL2 and is compatible with POTS services.

-

annexb

Supports VDSL2 and is compatible with ISDN services.

-

Views

VDSL interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

To enable the device to transmit services on a VDSL line, run the vdsl standard command to configure the device to use the same transmission standard as a DSLAM.

Prerequisites

The VDSL interface has been deactivated using the shutdown command.

Follow-up Procedure

To make the transmission standard configured for a VDSL interface take effect, run the undo shutdown command on the interface to activate the interface.

Example

# Configure AnnexA for VDSL interface Eth0/0/0.

<Huawei> system-view
[Huawei] set workmode slot 0 vdsl ptm
Warning: All the configuration will be saved to the next startup configuration. 
Continue? [y/n]: y                                                                            
  It will take several minutes to save configuration file, please wait..........
...                                                                             
  Configuration file had been saved successfully                                
  Note: The configuration file will take effect after being activated 
Warning: Changing the working mode will reset the board in slot 0. Continue? [y/
n]:y                                                                            
INFO: Resetting board[0] succeeded. 
[Huawei] interface ethernet 0/0/0
[Huawei-Ethernet0/0/0] shutdown
[Huawei-Ethernet0/0/0] vdsl standard vdsl2 annexa
[Huawei-Ethernet0/0/0] undo shutdown

vdsl band

Function

The vdsl band command enables or disables a specified carrier band on a VDSL interface.

By default, carrier bands are enabled on a VDSL interface.

Format

vdsl band { a43 | b43 | v43 } { off | on }

Parameters

Parameter

Description

Value

a43

Specifies the a43 carrier band on a VDSL interface.

-

b43

Specifies the b43 carrier band on a VDSL interface.

-

v43

Specifies the v43 carrier band on a VDSL interface.

-

off

Disables a specified carrier band on a VDSL interface.

-

on

Enables a specified carrier band on a VDSL interface.

-

Views

VDSL interface view, Ethernet interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

Carrier bands a43, b43, and v43 on a VDSL interface allow the local device to connect to and negotiate with a digital subscriber line access multiplexer (DSLAM). By default, carrier bands are enabled on the VDSL interface and the local device selects a carrier band through auto-negotiation with the DSLAM. If the DSLAM does not support a carrier band, run the vdsl band { a43 | b43 | v43 } off command to disable the carrier band.

Prerequisites
  • The transmission mode has been set to ATM or PTM using the set workmode command on the VDSL interface.

  • The VDSL interface has been deactivated using the shutdown command.

Precautions

The vdsl band command only enables or disables a specified carrier band on a VDSL interface. To make the configuration take effect immediately, run the undo shutdown command on the VDSL interface to activate the interface.

Example

# Disable the v43 carrier band on the VDSL interface Ethernet0/0/0.

<Huawei> system-view
[Huawei] interface ethernet0/0/0
[Huawei-Ethernet0/0/0] shutdown
[Huawei-Ethernet0/0/0] vdsl band v43 off
[Huawei-Ethernet0/0/0] undo shutdown
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Updated: 2019-05-29

Document ID: EDOC1000097293

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