You can terminate and re-establish an MPLS LDP neighbor session when at least one LDP Hello adjacency exists with the peer. When the LDP session terminates, the database associated with the LDP session is also cleared.
The LDP sessions are automatically reestablished when at least one "hello" adjacency exists with the neighbor, and LDP configuration remains unchanged.
Enter the
clear mpls ldp neighbor command to terminate an LDP session.
device# clear mpls ldp neighbor 10.234.123.64
In this example, both the link and targeted LDP sessions on neighbor 10.234.123.64 are terminated. When the
all option is specified instead of a peer address, all LDP sessions on the device are reset.
When the session re-establishes, the session-specific information is re-learned from its peer:
- LDP downstream and upstream label database displayed by the
show mpls ldp database command.
- LDP label switched path displayed by the
show mpls ldp path command.
- LDP peer displayed by the
show mpls ldp peer
command
- LDP created MPLS tunnels displayed by the
show mpls ldp tunnel command.
- LDP FECs learned from the resetting neighbor sessions displayed by the
show mpls ldp fec command. FECs are not cleared immediately but are marked that no LDP session exists.
