TUNNEL-TE_1.3.6.1.4.1.2011.5.12.7.1.4.2 hwMplsPsSwitchWtoP

Trap Buffer Description

Switched to protection tunnel. (IfIndex=[IfIndex], WorkTunnel=[WorkTunnel], WorkTunnelId=[WorkTunnelId], ProtectionTunnel=[ProtectionTunnel], ProtectionTunnelId=[ProtectionTunnelId], SwitchResult=[SwitchResult], WorkTunnelState=[WorkTunnelState], ProtTunnelState=[ProtTunnelState], LocalState=[LocalState])

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

Trap Attributes

Trap Attribute	Description
Alarm or Event	Event
Trap Severity	Warning
Mnemonic Code	TUNN_PS_WTOP
Trap OID	1.3.6.1.4.1.2011.5.12.7.1.4.2
MIB	HUAWEI-MPLSOAM-MIB
Alarm ID	This is an event trap and does not involve alarm ID.
Alarm Name	This is an event trap and does not involve alarm name.
Alarm Type	This is an event trap and does not involve alarm type.
Raise or Clear	This is an event trap and does not involve alarm generation or clearance.
Match trap	-

Trap Buffer Parameters

Parameter	Description
IfIndex	Indicates the index value of the work tunnel.
WorkTunnel	Indicates the name of the work tunnel.
WorkTunnelId	Indicates the tunnel ID of the work tunnel.
ProtectionTunnel	Indicates the name of the protection tunnel.
ProtectionTunnelId	Indicates the tunnel ID of the protection tunnel.
SwitchResult	Indicates the result of the switchover. The value 2 indicates that the work tunnel switches to the protection tunnel.
WorkTunnelState	Indicates the status of the work tunnel.
ProtTunnelState	Indicates the status of the protection tunnel.
LocalState	Indicates the status of local node.

VB Parameters

VB OID	VB Name	VB Index
1.3.6.1.4.1.2011.5.12.7.1.3.1.1.3	hwMplsPsWorkTunnName	hwMplsPsIndex
1.3.6.1.4.1.2011.5.12.7.1.3.1.1.4	hwMplsPsWorkTunnId	hwMplsPsIndex
1.3.6.1.4.1.2011.5.12.7.1.3.1.1.5	hwMplsPsProtectTunnName	hwMplsPsIndex
1.3.6.1.4.1.2011.5.12.7.1.3.1.1.6	hwMplsPsProtectTunnId	hwMplsPsIndex
1.3.6.1.4.1.2011.5.12.7.1.3.1.1.13	hwMplsPsSwitchResult	hwMplsPsIndex
1.3.6.1.4.1.2011.5.12.7.1.3.1.1.11	hwMplsPsWorkTunnelState	hwMplsPsIndex
1.3.6.1.4.1.2011.5.12.7.1.3.1.1.12	hwMplsPsProtTunnelState	hwMplsPsIndex
1.3.6.1.4.1.2011.5.12.7.1.3.1.1.20	hwMplsPsLocalState	hwMplsPsIndex

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

1. 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 7. If the fault persists, go to Step 2.

2. 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 command.

If so, go to Step 3.
If not, go to Step 4.

3. 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 command to check whether the interface along the primary tunnel is Up.

If all interfaces are Up, go to Step 5.
If an interface is Down, run the undo shutdown command.
If the fault is rectified, go to Step 7. If the fault persists, go to Step 5.

4. Run the display this command in the tunnel interface view to check whether the destination address, tunnel type, and TE tunnel ID are correct.

a. Run the tunnel-protocol mpls te command to configure a correct tunnel type.
b. Run the destination command to specify a correct destination address of the tunnel.
c. Run the mpls te tunnel-id command to specify a correct tunnel ID.

If the fault is rectified, go to Step 7. If the fault persists, go to Step 5.

5. Run the ping lsp te tunnel command to check connectivity of the tunnel LSP.

If the LSP is reachable, go to Step 7.
If the LSP is unreachable, go to Step 6.

6. Collect alarm information and configuration information, and then contact technical support personnel..

7. End.