BGP Prefix Independent Convergence
draft-ietf-rtgwg-bgp-pic-23
| Document | Type |
Expired Internet-Draft
(rtgwg WG)
Expired & archived
|
|
|---|---|---|---|
| Authors | Ahmed Bashandy , Clarence Filsfils , Prodosh Mohapatra , Yingzhen Qu | ||
| Last updated | 2026-08-19 (Latest revision 2026-02-15) | ||
| Replaces | draft-bashandy-rtgwg-bgp-pic | ||
| RFC stream | Internet Engineering Task Force (IETF) | ||
| Intended RFC status | Informational | ||
| Formats | |||
| Reviews |
BGPDIR Early review
by ROBERT RASZUK
Almost ready
IOTDIR IETF Last Call review
(of
-12)
by Ines Robles
Ready w/nits
GENART IETF Last Call review
(of
-12)
by Reese Enghardt
Ready w/issues
|
||
| Additional resources | Mailing list discussion | ||
| Stream | WG state | WG Document | |
| Document shepherd | Jeff Tantsura | ||
| Shepherd write-up | Show Last changed 2021-10-15 | ||
| IESG | IESG state | Expired | |
| Consensus boilerplate | Yes | ||
| Telechat date | (None) | ||
| Responsible AD | Alvaro Retana | ||
| Send notices to | Yingzhen Qu <yingzhen.ietf@gmail.com>, aretana.ietf@gmail.com, jefftant.ietf@gmail.com |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
In a network comprising thousands of BGP peers exchanging millions of routes, it is desirable to restore traffic after failure in a time period that does not depend on the number of BGP prefixes. This document describes an architecture by which traffic can be re- routed to Equal Cost Multi-Path (ECMP) or pre-calculated backup paths in a timeframe that does not depend on the number of BGP prefixes. The objective is achieved through organizing the forwarding data structures in a hierarchical manner and sharing forwarding elements among the maximum possible number of routes. The described technique yields prefix independent convergence while ensuring incremental deployment, complete automation, and zero management and provisioning effort. It is noteworthy to mention that the benefits of BGP Prefix Independent Convergence (BGP-PIC) are hinged on the existence of more than one path whether as ECMP or primary-backup.
Authors
Ahmed Bashandy
Clarence Filsfils
Prodosh Mohapatra
Yingzhen Qu
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)