A Border Gateway Protocol 4 (BGP-4)
draft-ietf-idr-bgp4-rfc4271bis-00
| Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Active".
Expired & archived
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| Authors | Yakov Rekhter , Tony Li , Susan Hares , John Scudder | ||
| Last updated | 2026-04-17 (Latest revision 2025-10-14) | ||
| Replaces | draft-scudder-idr-bgp4-rfc4271bis | ||
| RFC stream | Internet Engineering Task Force (IETF) | ||
| Formats | |||
| Additional resources | Mailing list discussion | ||
| Stream | WG state | WG Document | |
| Associated WG milestone |
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| Document shepherd | (None) | ||
| IESG | IESG state | Expired | |
| Consensus boilerplate | Unknown | ||
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:
Abstract
This document discusses the Border Gateway Protocol (BGP), which is an inter-Autonomous System routing protocol. The primary function of a BGP-speaking system is to exchange network reachability information with other BGP systems. This network reachability information includes information on the list of Autonomous Systems (ASes) that reachability information traverses. This information is sufficient for constructing a graph of AS connectivity for this reachability from which routing loops may be pruned, and, at the AS level, some policy decisions may be enforced. BGP-4 provides a set of mechanisms for supporting Classless Inter- Domain Routing (CIDR). These mechanisms include support for advertising a set of destinations as an IP prefix, and eliminating the concept of network "class" within BGP. BGP-4 also introduces mechanisms that allow aggregation of routes, including aggregation of AS paths. This document obsoletes RFC 4271.
Authors
Yakov Rekhter
Tony Li
Susan Hares
John Scudder
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)