A new Request for Comments is now available in online RFC libraries.
RFC 9570
Title: Deprecating the Use of Router Alert
in LSP Ping
Author: K. Kompella,
R. Bonica,
G. Mirsky, Ed.
Status: Standards Track
Stream: IETF
Date: May 2024
Mailbox: kireeti.i...@gmail.com,
rbon...@juniper.net,
gregimir...@gmail.com
Pages: 9
Updates: RFC 8029
I-D Tag: draft-ietf-mpls-lspping-norao-08.txt
URL: https://www.rfc-editor.org/info/rfc9570
DOI: 10.17487/RFC9570
The MPLS echo request and MPLS echo response messages, defined in RFC
8029, "Detecting Multiprotocol Label Switched (MPLS) Data-Plane
Failures" (usually referred to as LSP ping), are encapsulated in IP
packets with headers that include a Router Alert Option (RAO). In
actual deployments, the RAO was neither required nor used.
Furthermore, RFC 6398 identifies security vulnerabilities associated
with the RAO in non-controlled environments, e.g., the case of using
the MPLS echo request/reply as inter-area Operations, Administration,
and Maintenance (OAM), and recommends against its use outside of
controlled environments.
Therefore, this document retires the RAO for MPLS OAM and updates RFC
8029 to remove the RAO from LSP ping message encapsulations.
Furthermore, this document explains why RFC 7506 has been
reclassified as Historic.
Also, this document recommends the use of an IPv6 loopback address
(::1/128) as the IPv6 destination address for an MPLS echo request
message.
This document is a product of the Multiprotocol Label Switching Working Group
of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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