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    Tracing Paths Through the MPLS User Plane


    To trace paths through the MPLS user plane.


    To trace the path that packets follow enroute to the destination IP address

    Tracing route to, TTL = 32, timeout = 2 sec.
    (Press ^c to stop.)
    1  3ms  2ms  2ms    mplsLabel1=4009
    2  2ms  2ms  2ms    mplsLabel1=7004
    3  2ms  2ms  2ms

    ICMP extensions enable LSRs to append MPLS header information (the label stack) to ICMP destination unreachable and time exceeded messages. This sample output shows the label and EXP bits used to switch the ICMP packets.

    Published: 2014-08-18