title

RFC 6398 - IP Router Alert Considerations and Usage

charset

utf-8

X-UA-Compatible

IE=edge

viewport

width=device-width, initial-scale=1

article:section

IETF - Internet Engineering Task Force

og:title

RFC 6398: IP Router Alert Considerations and Usage

og:url

https://datatracker.ietf.org/doc/rfc6398/

og:site_name

IETF Datatracker

og:description

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.

og:type

article

twitter:card

summary_large_image

alternate

/feed/document-changes/rfc6398/

apple-touch-icon

https://static.ietf.org/dt/12.43.1/ietf/images/ietf-logo-nor-180.png

canonical

https://datatracker.ietf.org/doc/rfc6398/

icon

https://static.ietf.org/dt/12.43.1/ietf/images/ietf-logo-nor-32.png

icon

https://static.ietf.org/dt/12.43.1/ietf/images/ietf-logo-nor-16.png