IP Router Alert Considerations and Usage

Metadata

Publisher: IETF
Doc Type: Best Practice
Pages: 19
Abstract: The IP Router Alert Option is an IP option that alerts transit routers to more closely examine the contents of an IP packet. The Resource reSerVation Protocol (RSVP), Pragmatic General Multicast (PGM), the Internet Group Management Protocol (IGMP), Multicast Listener Discovery (MLD), Multicast Router Discovery (MRD), and General Internet Signaling Transport (GIST) are some of the protocols that make use of the IP Router Alert Option. This document discusses security aspects and usage guidelines around the use of the current IP Router Alert Option, thereby updating RFC 2113 and RFC 2711. Specifically, it provides recommendations against using the Router Alert in the end-to-end open Internet and identifies controlled environments where protocols depending on Router Alert can be used safely. It also provides recommendations about protection approaches for service providers. Finally, it provides brief guidelines for Router Alert implementation on routers. This memo documents an Internet Best Current Practice.
Publication Date: 2011-10-01
Status Note: Best Current Practice
DOI: 10.17487/RFC6398
Link: https://doi.org/10.17487/RFC6398
Author(s): François Le Faucheur

Latest version of IETF RFC 6398

Document Versions — IETF RFC 6398

▶ IETF RFC 6398 (2011-10-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

IETF RFC 791 [Active*]
IETF RFC 2113 [Active*]
IETF RFC 2119 [Active*]
IETF RFC 2460 [Superseded*]
IETF RFC 2711 [Active*]
IETF RFC 5350 [Active*]

Bibliographic Reference(s)

Krishnan, S., "The case against Hop-by-Hop options" , Work in Progress, October 2010. EXTERNAL
Narayanan, A., Le Faucheur, F., Ward, D., and R. Rahman, "IP Router Alert Option Extension", Work in Progress, March 2009. EXTERNAL
IETF RFC 2205 [Active*]
IETF RFC 2710 [Active*]
IETF RFC 2961 [Active*]
IETF RFC 3175 [Active*]
RFC3208 — RFC3208 EXTERNAL
IETF RFC 3209 [Active*]
IETF RFC 3376 [Superseded*]
IETF RFC 3810 [Superseded*]
RFC4081 — 30 EXTERNAL
RFC4286 — RFC4286 EXTERNAL
IETF RFC 4732 [Active*]
IETF RFC 5971 [Active*]
RFC6016 — RFC6016 EXTERNAL
IETF RFC 6178 [Active*]

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Referenced By

IETF RFC 7506 [Active*]
IETF RFC 8468 [Active*]
IETF RFC 9570 [Active*]
IETF RFC 9673 [Active*]
IETF RFC 9805 [Active*]