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Status:

PROPOSED STANDARD

Updates:

RFC 6790

Authors:

N. Akiya
G. Swallow
C. Pignataro
A. Malis
S. Aldrin

Stream:

IETF

Source:

mpls (rtg)

Cite this RFC:TXT  | XML  |  BibTeX

DOI:  https://doi.org/10.17487/RFC8012

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Abstract

Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) pingand traceroute are methods used to test Equal-Cost Multipath (ECMP)paths. Ping is known as a connectivity-verification method andtraceroute is known as a fault-isolation method, as described in RFC4379. When an LSP is signaled using the Entropy Label (EL) describedin RFC 6790, the ability for LSP ping and traceroute operations todiscover and exercise ECMP paths is lost for scenarios where LabelSwitching Routers (LSRs) apply different load-balancing techniques.One such scenario is when some LSRs apply EL-based load balancingwhile other LSRs apply load balancing that is not EL based (e.g., IP).Another scenario is when an EL-based LSP is stitched with another LSPthat can be EL based or not EL based.

This document extends the MPLS LSP ping and traceroute multipathmechanisms in RFC 6424 to allow the ability of exercising LSPs thatmake use of the EL. This document updates RFC 6790.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.