LSR Self-Test

Document Type Expired Internet-Draft (individual)
Last updated 2003-06-26
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document defines a means of self test for a Label-Switched Router (LSR) to verify that its dataplane is functioning for certain key Multi-Protocol Label Switching (MPLS) applications including unicast forwarding based on LDP [LDP] and traffic engineering tunnels based on [RSVP-TE]. A new Loopback FEC type is defined to allow an upstream neighbor to assist in the testing at very low cost. MPLS Echo Request and MPLS Echo Reply messages [LSP-Ping] messages are extended to do the actually probing.


George Swallow (
Dan Tappan (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)