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Status:

PROPOSED STANDARD

Updates:

RFC 4271

Updated by:

RFC 8538

Authors:

S. Sangli
E. Chen
R. Fernando
J. Scudder
Y. Rekhter

Stream:

IETF

Source:

idr (rtg)

Cite this RFC:TXT  | XML  |  BibTeX

DOI:  https://doi.org/10.17487/RFC4724

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Abstract

This document describes a mechanism for BGP that would help minimizethe negative effects on routing caused by BGP restart. An End-of-RIBmarker is specified and can be used to convey routing convergenceinformation. A new BGP capability, termed "Graceful RestartCapability", is defined that would allow a BGP speaker to expressits ability to preserve forwarding state during BGP restart. Finally,procedures are outlined for temporarily retaining routing informationacross a TCP session termination/re-establishment.

The mechanisms described in this document are applicable to allrouters, both those with the ability to preserve forwarding stateduring BGP restart and those without (although the latter need toimplement only a subset of the mechanisms described in thisdocument). [STANDARDS-TRACK]

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.