LSP ping for MPLS

Enables you to test the data plane of an LSP by issuing the ping mpls command, specifying one of the following options: l2circuit, l2vpn, l3vpn, ldp, or rsvp. Echo requests are sent as MPLS packets destined for the address 127.0.0.1 and the well-known port 3503. When the echo request arrives at the egress node, the receiver checks the contents of the packet and sends a reply containing the correct return value. The sender of the echo request waits 2 seconds for the echo reply, then times out.