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Label Switched Path (LSP) and Pseudowire (PW) Ping/Trace over MPLS Network using Entropy Labels (EL)

Document Type Replaced Internet-Draft (mpls WG)
Expired & archived
Authors Nobo Akiya , George Swallow , Carlos Pignataro , Andrew G. Malis , Sam Aldrin
Last updated 2014-11-22
Replaced by RFC 8012
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state Candidate for WG Adoption
Document shepherd Loa Andersson
IESG IESG state Replaced by draft-ietf-mpls-entropy-lsp-ping
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) Ping and Traceroute are used to exercise specific paths of Equal-Cost Multipath (ECMP). When LSP is signaled to use Entropy Label (EL) described in RFC6790, the ability for LSP Ping and Traceroute operation to discover and exercise ECMP paths has been lost in scenarios which LSRs apply deviating load balance techniques. One such scenario is when some LSRs apply EL based load balancing while other LSRs apply non-EL based load balancing (ex: IP). Another scenario is when EL based LSP is stitched with another LSP which can be EL based or non-EL based. This document extends the MPLS LSP Ping and Traceroute mechanisms to restore the ability of exercising specific paths of ECMP over LSP which make use of Entropy Label. This document updates RFC4379, RFC6424 and RFC6790.


Nobo Akiya
George Swallow
Carlos Pignataro
Andrew G. Malis
Sam Aldrin

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