Deprecating the Use of Router Alert in LSP Ping

Metadata

Publisher: IETF
Doc Type: Standard
Pages: 9
Abstract: 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.
Publication Date: 2024-05-01
Status Note: Proposed Standard
DOI: 10.17487/RFC9570
Link: https://doi.org/10.17487/RFC9570
Author(s): Kireeti Kompella
Ron Bonica
Greg Mirsky
Keyword(s): LSP Ping, Router Alert

Latest version of IETF RFC 9570

Document Versions — IETF RFC 9570

▶ IETF RFC 9570 (2024-05-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

IETF RFC 1122 [Active*]
IETF RFC 1812 [Active*]
IETF RFC 2113 [Active*]
IETF RFC 2119 [Active*]
IETF RFC 4291 [Active*]
IETF RFC 6398 [Active*]
IETF RFC 7506 [Active*]
IETF RFC 8029 [Active*]
IETF RFC 8126 [Active*]
IETF RFC 8174 [Active*]

Bibliographic Reference(s)

IANA, "Multiprotocol Label Switching (MPLS) Label Switched Paths (LSPs) Ping Parameters", <https://www.iana.org/assignments/mpls-lsp-ping-parameters>. EXTERNAL
IANA, "IPv6 Router Alert Option Values", <https://www.iana.org/assignments/ipv6-routeralert-values>. EXTERNAL
IETF RFC 3032 [Active*]
RFC6438 — RFC6438 EXTERNAL
IETF RFC 6790 [Active*]

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IETF RFC 9570, Deprecating the Use of Router Alert in LSP Ping. Available at https://doi.org/10.17487/RFC9570

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<span class="citation"><cite>IETF RFC 9570</cite>, Deprecating the Use of Router Alert in LSP Ping. Available at <a href="https://doi.org/10.17487/RFC9570" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9570</a></span>

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IETF RFC 9570, Deprecating the Use of Router Alert in LSP Ping
doi: 10.17487/RFC9570
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<cite id="bib-rfc9570">IETF RFC 9570</cite>, Deprecating the Use of Router Alert in LSP Ping
<span class="doi">10.17487/RFC9570</span>
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Referenced By

IETF RFC 9805 [Active*]