Traceroute MPLS LDP Tunnel

1. Initiate traceroute request at ingress router of an LDP tunnel.
   

   device# traceroute 

2. Handle incoming traceroute request at a transit node of an LDP tunnel (router-alert).
3. Handle incoming traceroute request at the egress node of an LDP tunnel.
4. Handle traceroute reply at the ingress router of an LDP tunnel.

device# traceroute mpls ldp 130.130.130.1

Trace LDP LSP to 130.130.130.1/32, timeout 5000 msec, TTL 1 to 30

Type Control-c to abort
 1  3ms 120.120.120.1 return code 8(Transit)
 2  1ms 130.130.130.1 return code 3(Egress)

Trace LDP LSP to 130.130.130.1/32, timeout 5000 msec, TTL 1 to 30

Type Control-c to abort
 1  1ms 120.120.120.1 return code 8(Transit)
 2  2ms 130.130.130.1 return code 3(Egress)