TUNNEL_1.3.6.1.4.1.2011.5.12.7.1.4.2 hwMplsPsSwitchWtoP

Description

TUNNEL/4/TUNN_PS_WTOP: OID [OID] switched to protection tunnel. (IfIndex=[INTEGER], WorkTunnel=[OCTET], WorkTunnelId=[INTEGER], ProtectionTunnel=[octet], ProtectionTunnelId=[INTEGER], SwitchResult=[INTEGER], WorkTunnelState=[INTEGER], ProtTunnelState=[INTEGER], LocalState=[INTEGER])

The protection group switched from the work tunnel to the protection tunnel.

Attribute

Alarm ID	Alarm Severity	Alarm Type
1.3.6.1.4.1.2011.5.12.7.1.4.2	Warning	processingErrorAlarm(4)

Parameters

Name	Meaning
OID	Indicates the MIB object ID of the alarm.
IfIndex	Index of the working tunnel
WorkTunnel	Name of the working tunnel.
WorkTunnelId	Tunnel ID of the working tunnel
ProtectionTunnel	Name of the protection tunnel.
ProtectionTunnelId	Tunnel ID of the protection tunnel.
SwitchResult	Result of the switchover. The value 2 indicates that the work tunnel switches to the protection tunnel.
WorkTunnelState	Status of the work tunnel.
ProtTunnelState	Status of the protection tunnel.
LocalState	Status of local node.

Impact on the System

When the primary tunnel is faulty, traffic is switched from the primary tunnel to the backup tunnel.

Possible Causes

1. The interface along the TE tunnel was shut down.

2. Interfaces along the TE tunnel were not enabled with MPLS, MPLS TE, or RSVP-TE.

3. The tunnel configurations such as destination address, type, or TE tunnel ID were incorrect or were not committed.

4. The explicit path was not the expected one.

5. A fault was detected by an OAM session or a BFD session.

6. The TE tunnel interface failed to forward packets.

Procedure

For an RSVP-TE tunnel, run the display mpls te tunnel path command to view information about interfaces along a tunnel. For a static tunnel, run the display current-configuration command to view information about interfaces along the static LSP.
Run the display this command in the view of an interface along the TE tunnel to check whether the interface goes Up and whether MPLS, MPLS TE, and RSVP-TE are enabled.
- If the interface goes Down, run the undo shutdown command.
- If MPLS, MPLS TE, and RSVP-TE are disabled, run the mpls, mpls te, and mpls rsvp-te commands in sequence.
- If the fault is rectified, go to Step 9. If the fault persists, go to Step 3.
Run the display this command in the tunnel interface view to check whether an explicit path is configured through the mpls te path explicit-path path-name command.
- If so, go to Step 4.
- If not, go to Step 5.
Run the display explicit-path path-name command to view the address of each hop along the explicit path. Using the address of each hop along the explicit path, run the display ip interface interface-type interface-number command to check whether the interface along the primary tunnel is Up.
- If all interfaces are Up, go to Step 6.
- If an interface is Down, run the undo shutdown command.
- If the fault is rectified, go to Step 9. If the fault persists, go to Step 6.
Run the display this command in the tunnel interface view to check whether the destination address, tunnel type, and TE tunnel ID are correct and whether the mpls te commit command is run.
- If there is an incorrect configuration, run one of the following commands to correct the configuration:
  1. Run the tunnel-protocol mpls te command to configure a correct tunnel type.
  2. Run the destination dest-ip-address command to specify a correct destination address of the tunnel.
  3. Run the mpls te tunnel-id tunnel-id command to specify a correct tunnel ID.
- If the configurations are not committed, run the mpls te commit command.
- If the fault is rectified, go to Step 9. If the fault persists, go to Step 6.
Run the ping lsp te tunnel interface-number command to check connectivity of the tunnel LSP.
- If the LSP is reachable, go to Step 8.
- If the LSP is unreachable, go to Step 7.
Run the display bfd session all command to view BFD detection results.
- If a BFD session is Down, refer to the troubleshooting manuals for BFD.
- If BFD sessions are Up, go to Step 8.
Collect alarm information and configuration information, and then contact technical support personnel.
End.

Related Information

TUNNEL_1.3.6.1.4.1.2011.5.12.7.1.4.1 hwMplsPsSwitchPtoW