MPLS IPv6 traceroute for segment routing (IS-IS Segment)

You can use MPLS traceroute for IS-IS segment routing segments to diagnose the state of label-switched paths (LSPs) toward specific segment routing forwarding equivalence classes (FECs) advertised by IS-IS. Specifically, this feature introduces support for IPv6-based segment routing FECs. Based on how the LSP outbound (egress) node at the remote endpoint of the connection replies to the probes, you can determine the connectivity of the IS-IS segment routing FEC. Each probe is an echo request sent to the IS-IS segment routing FEC as an MPLS packet with a UDP payload. If the outbound node receives the echo request, it checks the contents of the probe and returns a value in the UDP payload of the response packet. If the device receives the response packet, it reports a successful ping response. Responses that take longer than 2 seconds are identified as failed probes.