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Label Switching Router Self-Test

Document Type Expired Internet-Draft (mpls WG)
Author George Swallow
Last updated 2015-10-14 (Latest revision 2007-05-25)
Stream Internet Engineering Task Force (IETF)
Expired & archived
Stream WG state WG Document
Document shepherd (None)
IESG IESG state Expired (IESG: Dead)
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD Ross Callon
Send notices to (None)
This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at:


This document defines a means for a Label-Switching Router (LSR) to verify that its data plane is functioning for certain key Multi-Protocol Label Switching (MPLS) applications, including unicast forwarding and traffic engineering tunnels. A new Loopback FEC type is defined to allow an upstream neighbor to assist in the testing at very low cost. MPLS Verification Request and MPLS Verification Reply messages are defined to do the actual probing.


George Swallow

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