display mpls l2vpn pw-aps

Function

The display mpls l2vpn pw-aps command displays information about a PW APS instance and its associated PW protection groups.

Format

display mpls l2vpn pw-aps [ apsId ] [ verbose ]

Parameters

Parameter Description Value
apsId

Displays information about a specified PW APS instance and its associated PW protection groups.

The value is an integer ranging from 1 to 16384.
verbose

Displays detailed information about PW APS instances and their associated PW protection groups.

-

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name Operations
l2vpn read

Usage Guidelines

Usage Scenario

To check PW APS instance information after you configure a PW APS instance, run the display mpls l2vpn pw-aps command. To check the status of a PW APS instance and information about its associated PW protection group after you associate a PW protection group with a PW APS instance, run the display mpls l2vpn pw-aps command.

Prerequisites

PW APS instances have been configured in the system view and associated with PW protection groups.

Precautions

Only the NetEngine 8000 F1A supports this command.

Example

The actual command output varies according to the device. The command output here is only an example.

# Display detailed information about the PW APS instance numbered 1 and its associated PW protection groups.
<HUAWEI> display mpls l2vpn pw-aps 1 verbose
APS Information:
   Description            :--
   Local Id               : 1
   Mode                   : PW-APS
   Status                 : NR
   Work Path Status       : NoDefect
   Protect Path Status    : NoDefect
   Far End Status         : NR
   Request Result         : Work
   Wtr Interval(s)        : 300
   HoldOff Interval(ms)   : 0
   Operation Type         : Revertive
   Role                   : master
   Remote Id              : 1
   Alarm Info             : None
   Hardware resource      : Normal
   Total VPN Number       : 1
 ----------------------------------------
 PW Information:
   Number                 : 1
   Client Interface       : GigabitEthernet0/1/0.1
   Bind Type              : admin
  Primary PW:
    VC ID                 : 1
    VC Type               : VLAN
    Destination           : 2.2.2.2
    VC State              : down
  Secondary PW:
    VC ID                 : 2
    VC Type               : VLAN
    Destination           : 3.3.3.3
    VC State              : up
# Display a summary of the PW APS instance numbered 1 and its associated PW protection groups.
<HUAWEI> display mpls l2vpn pw-aps 1
Local Id    Remote Id    Status    Request Result    Role    Total VPN Number  
 ------------------------------------------------------------------------------ 
 1           --           SF_P      Work              --      2
# Display a summary of all PW APS instances and their associated PW protection groups.
<HUAWEI> display mpls l2vpn pw-aps
Total APS Number: 2                                                            
 Local Id    Remote Id    Status    Request Result    Role    Total VPN Number  
 ------------------------------------------------------------------------------ 
 1           --           SF_P      Work              --      2                 
 2           --           SF_P      Work              --      2
Table 1 Description of the display mpls l2vpn pw-aps command output
Item Description
APS Information:

PW APS instance information.
Description

Description of a PW APS instance. The description can be configured using the description command.
Local Id

Local number of a PW APS instance.
Mode

Indicates the role of the PW APS instance:

  • PW-APS: PW automatic protection switching.
  • PW-FPS: PW fast protection switching.
  • MC-PW-APS: PW APS mode with the same source and different sinks.
Status

PW APS instance status:

  • LO: Services are locked to the primary PW.
  • SF_P: The secondary or bypass PW becomes faulty.
  • FS: Services are forcibly switched from the primary PW to the secondary or bypass PW.
  • SF: The primary PW becomes faulty.
  • SD_P: Signals degrade on the secondary or bypass PW.
  • SD: Signals degrade on the primary PW.
  • MS: Services are manually switched from the primary PW to the secondary or bypass PW.
  • WTR: The system is waiting to switch traffic back from the secondary or bypass PW to the primary PW.
  • EXER: A protocol-layer APS exercise is triggered.
  • RR: The local end switches from the NR mode to the RR mode upon the receipt of an APS exercise packet from the remote end.
  • DNR: In NR mode, traffic travels along the secondary PW even after the primary PW recovers. The APS state machine enters the DNR state.
  • NR: The primary, secondary, or bypass PW is normal.
Work Path Status

Working path status of a PW APS instance:

  • NoDefect: The working path is normal.
  • Defect: The working path is faulty.
  • Defect_Sd: Signals degrade on the working path.
  • --: Path status is not detected. If the role of a PW APS instance is slave, Work Path Status is displayed as --.

For a PW APS instance, the primary PW serves as the working path and the secondary PW serves as the protection path. In an E-PW APS scenario in which the role of a PW APS instance is master, the bypass PW serves as the working path and the primary PW serves as the protection path.
Protect Path Status

Protection path status of a PW APS instance:

  • NoDefect: The protection path is normal.
  • Defect: The protection path is faulty.
  • Defect_Sd: Signals degrade on the protection path.
  • --: Path status is not detected. If the role of a PW APS instance is slave, Work Path Status is displayed as --.

For a PW APS instance, the primary PW serves as the working path and the secondary PW serves as the protection path. In an E-PW APS scenario in which the role of a PW APS instance is master, the bypass PW serves as the working path and the primary PW serves as the protection path.
Far End Status

Remote PW APS status. The value is consistent with the Status field value.
Request Result

APS calculation result:

  • Work: The traffic in the PW protection group is transmitted over the primary PW.
  • Protect: The traffic in the PW protection group is transmitted over the secondary or bypass PW.
Wtr Interval(s)

WTR time for PW APS switchback, in seconds.
HoldOff Interval(ms)

Hold time for PW APS switching, in milliseconds.
Operation Type

Switchback mode of a PW APS instance:

  • Revertive.
  • Non-Revertive.
Role

Role of a PW APS instance:

  • master.
  • slave.
Remote Id

Remote number of a PW APS instance.
Alarm Info

PW OAM alarm information.
Hardware resource

Hardware resource status:

  • Normal: Hardware resources are normal.
  • Not enough: Hardware resources are insufficient.
  • Not support: The hardware does not support PW APS.
Total APS Number

Number of PW APS instances.
Total VPN Number

Total number of PW protection groups (VPN instances) associated with a PW APS instance.
Number

Number of a PW.
PW Information:

PW information.
Client Interface

AC interface.
Bind Type

Binding relationship between a PW protection group and a PW APS instance:

  • Admin: The PW protection group associated with the PW APS instance is an administrative PW protection group.
  • Reference: The PW protection group associated with the PW APS instance is a reference PW protection group.
Primary PW:

Information about the primary PW.
VC ID

ID of the VC.
VC Type

VC type:

  • ATM 1to1 VCC.
  • ATM 1to1 VPC.
  • ATM AAL5 PDU.
  • ATM AAL5 SDU.
  • ATM Nto1 VCC.
  • ATM Nto1 VPC.
  • ATM Transparent cell.
  • CEP.
  • CESoPSN basic mode.
  • Ethernet.
  • IP-interworking.
  • IP-layer2.
  • PPP.
  • SAT E1 over Packet.
  • SAT E3 over Packet.
  • SAT T1 over Packet.
  • VLAN.
VC State

VC status:

  • up.
  • down.
Destination

LSR ID of the remote device.
Secondary PW:

Information about the secondary PW.
Parent Topic: VPWS Configuration Commands
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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