You can perform the following operations to verify that the LDP LSP is successfully set up

1.Check and ensure that an LDP session is correctly set up by running the display mpls ldp session command.
2.Check and ensure that a route exists by running the display ip routing-table ip-address mask command.
3.Check and ensure that the outgoing interface of the route and the address of the recovery source of the LDP peer are the same by running the display mpls ldp peer command.
4.Check and ensure that the configurations are met the requirements for triggering the establishment of an LSP.


If the preceding conditions are met whereas the LSP is not set up, you can run the debugging mpls ldp fec command to check the establishment process of the LSP.

thanks. it is very useful

useful document, thanks