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Alarm Handling

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the trap description, attributes, parameters, impact on the system, possible causes, procedures, and references. This document provides a complete set of traps, through which intended readers are kept of the running status of the device so as to locate faults.

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L2V_1. hwSvcDown

L2V_1. hwSvcDown


L2V/2/SVC_DWN_T:OID [oid] The status of the SVC VC turned DOWN. (InterfaceIndex=[INTEGER], InterfaceIndex=[INTEGER], SvcId=[GAUGE], SVcType=[INTEGER], PeerAddress=[IPADDR], SvcInboundLabel=[GAUGE], SvcOutboundLabel=[GAUGE], HWL2VpnStateChangeReason=[INTEGER], InterfaceName=[STRING], TunnelPolicyName=[STRING], ActiveState=[INTEGER], TunnelType = [INTEGER], SessionTunnelId=[GAUGE])

Indicates an SVC goes Down.


Alarm ID Alarm Severity Alarm Type




Name Meaning


Indicates the MIB object ID of the alarm.


Index of the interface used as the table index.


Index of the interface reported to the network management system as a parameter.


Indicates the ID of an SVC.


Indicates the type of an SVC:
  • 0: Initial value
  • 1: FR
  • 2: ATM AAL5
  • 3: ATM cell relay
  • 4: VLAN
  • 5: Ethernet
  • 6: HDLC
  • 7: PPP
  • 9: ATM cell VCC
  • 10: ATM cell VPC
  • 11: IP-layer 2 (used for heterogeneous IP-interworking between Huawei devices and non-Huawei devices)
  • 12: ATM, 1-to-1 VCC cell mode
  • 13: ATM, 1-to-1 VPC cell mode
  • 14: ATM, AAL5 PDU VCC Transport
  • 64: Heterogeneous IP-interworking


Indicates the IP address of a peer.


Indicates the incoming label of an SVC.


Indicates the outgoing label of an SVC.


Indicates the cause for the SVC status change.


Indicates the interface name.


Indicates the name of a tunnel policy.


Indicates the status of active.


Indicates the type of a tunnel.


Indicates the ID of a tunnel.

Impact on the System

The SVC service is interrupted and the traffic is blocked.

Possible Causes


The local or peer AC interface went Down.


The public network tunnel was faulty.


  1. Run the display mpls static-l2vc interface interface-type interface-number command to check whether the AC goes Up.

    • If so, go to Step 3.
    • If not, go to Step 2.
    The SVC status can be Up if two conditions are met. That is, the AC status is Up and the tunnel is selected.

  2. Check whether the AC interface goes Down.

    • If so, rectify the fault and ensure that the AC interface goes Up. Then, check whether the fault is rectified. If so, go to Step 7; if not, go to Step 3.
    • If not, go to Step 3.

  3. View the command output in Step 1 to check whether the number of tunnels in the VC tunnel/token info field is 0.

    • If so, go to Step 4.
    • If not, go to Step 7.

  4. Run the display tunnel-info all command to check whether there is information about the LSP tunnel with the destination address being the address of the peer PE.

    • If so, go to Step 7.
    • If no, go to Step 5.

  5. Check and rectify the configuration of the public network interface. Check whether the fault is rectified.

    • If so, go to Step 7.
    • If not, go to Step 6.

  6. Collect alarm information and configuration information, and then contact technical support personnel.
  7. End.
Updated: 2019-03-06

Document ID: EDOC1100041475

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