BGP Prefix Independent Convergence
draft-ietf-rtgwg-bgp-pic-20
| Document | Type |
Expired Internet-Draft
(rtgwg WG)
Expired & archived
|
|
|---|---|---|---|
| Authors | Ahmed Bashandy , Clarence Filsfils , Prodosh Mohapatra | ||
| Last updated | 2024-04-03 (Latest revision 2023-10-01) | ||
| Replaces | draft-bashandy-rtgwg-bgp-pic | ||
| RFC stream | Internet Engineering Task Force (IETF) | ||
| Intended RFC status | Informational | ||
| Formats | |||
| Reviews |
IOTDIR Last Call review
(of
-12)
by Ines Robles
Ready w/nits
GENART Last Call review
(of
-12)
by Reese Enghardt
Ready w/issues
|
||
| Additional resources | Mailing list discussion | ||
| Stream | WG state | WG Document | |
| Document shepherd | Yingzhen Qu | ||
| Shepherd write-up | Show Last changed 2021-10-15 | ||
| IESG | IESG state | Expired (IESG: Dead) | |
| Action Holders |
(None)
|
||
| Consensus boilerplate | Yes | ||
| Telechat date | (None) | ||
| Responsible AD | Alvaro Retana | ||
| Send notices to | Yingzhen Qu <yingzhen.ietf@gmail.com>, aretana.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This Internet-Draft is no longer active.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, many routes are reachable via more than one next-hop. Given the large scaling targets, 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
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)