Tracing Layer 2 Circuit Operations

To trace the creation of and changes to Layer 2 circuits, include the traceoptions statement:

traceoptions {file filename <files number> <size size> <world-readable | no-world-readable>;flag flag <flag-modifier> <disable>;}

You can include this statement at the following hierarchy levels:

Specify the following flags to trace the indicated operations on Layer 2 circuits:

connections—Layer 2 circuit connections (events and state changes)
error—Error conditions
FEC—Layer 2 circuit advertisements received or sent using LDP
topology—Layer 2 circuit topology changes caused by reconfiguration or advertisements received from other PE routers