RFC 9570: Deprecating the Use of Router Alert in LSP Ping
In plain English — editorial summary, not part of the RFC
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.
Document record
- Document ID
- RFC9570
- Published
- May 2024
- Authors
- K. Kompella; R. Bonica; G. Mirsky
- Status
- PROPOSED STANDARD
- Stream
- IETF
- Area
- rtg
- Pages
- 9
- Also known as
- —
- Updates:
- RFC 8029
Topics
Related documents
Ranked automatically by shared keywords, IETF area and stream — not by editorial selection.
- RFC 9612Bidirectional Forwarding Detection (BFD) Reverse Path for MPLS Label Switched Paths (LSPs)Current
July 2024
- RFC 9489Label Switched Path (LSP) Ping Mechanisms for EVPN and Provider Backbone Bridging EVPN (PBB-EVPN)Current
November 2023
- RFC 8611Label Switched Path (LSP) Ping and Traceroute Multipath Support for Link Aggregation Group (LAG) InterfacesUpdated
June 2019
- RFC 8287Label Switched Path (LSP) Ping/Traceroute for Segment Routing (SR) IGP-Prefix and IGP-Adjacency Segment Identifiers (SIDs) with MPLS Data PlanesUpdated
December 2017
- RFC 8012Label Switched Path (LSP) and Pseudowire (PW) Ping/Trace over MPLS Networks Using Entropy Labels (ELs)Current
November 2016
- RFC 7737Label Switched Path (LSP) Ping and Traceroute Reply Mode SimplificationCurrent
January 2016
- RFC 7537IANA Registries for LSP Ping Code PointsObsoleted
May 2015
- RFC 7506IPv6 Router Alert Option for MPLS Operations, Administration, and Maintenance (OAM)Current
April 2015
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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.
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