This section provides example output of the traceroute OAM tool when the ICMP tunneling feature is enabled in a few common applications.
The ICMP tunneling feature is described in Tunneling of ICMP reply packets over MPLS LSP and provides supports for appending to the ICMP reply of type Time Exceeded the MPLS label stack object defined in RFC 4950. The new MPLS Label Stack object allows an LSR to include label stack information including label value, EXP, and TTL field values, from the encapsulation header of the packet that expired at the LSR node.