trace mpls l2transport


trace mpls l2transport [ vrf vrfName ]
{ interfaceType interfaceSpecifier }
[ data-size dataSize ]
[ destination startIpAddress endIpAddress increment ]
[ source address sourceAddr ]
[ ttl ttlValue ] [ timeout timeOutVal ]
[ reply mode { ipv4-udp | ipv4-udp-with-router-alert } ]
[ reply pad-tlv ] [ reply dscp trafficClass ]
[ exp-bits bitValue ] [ bottom-label-ttl bottomLabelTtl ] [ detail ]

Release Information

Command introduced in JunosE Release 8.0.0.

data-size keyword and dataSize variable added in JunosE Release 11.1.0.


Sends MPLS echo request packets with successively higher TTL values to the specified layer 2 cross-connect virtual (Martini) circuit. Discovers the path MPLS packets follow to the destination. There is no no version.

The echo request packet generated by this command contains the FEC 128 Pseudowire (Current) sub-TLV described in RFC 4379—Detecting Multi-Protocol Label Switched (MPLS) Data Plane Failures (February 2006).

Note: This command is not supported for local cross-connects because local cross-connects do not employ an LSP.



Privileged Exec, User Exec

Related Documentation