Perform the following operations:

1. Check whether the peer can be always pinged through.
Run the display mpls ldp peer command in the system view, and you can view the transport address (in the Transport-Address field) used by the peer to set up an LDP session with the local node. Then you can run the ping command to check whether packets are discarded.


2. Check whether route flapping occurs.

Run the display ip routing-table command in the system view, and you can view information about all routes. In addition, you can specify a destination address in the command to view all routes to the destination address. By monitoring route information within a certain period, you can check whether route flapping occurs.

3. Check whether LDP session flapping occurs.
Run the display mpls ldp session command in the system view, and you can view information about all LDP sessions. In addition, you can specify a peer address in the command to view information about an LDP session between the local node and the peer. By monitoring LDP session information within a certain period, you can check whether LDP session flapping occurs.

4. View configurations to check whether the lsp-trigger all command is configured.

5. You can enable the debugging function to check whether an abnormality occurs.

nice job

good to know!

point. - 2 & 3 are informative

good post