RFC 6793 · PROPOSED STANDARD · 2012

BGP Support for Four-Octet Autonomous System Number Space

Overview

RFC 6793, “BGP Support for Four-Octet Autonomous System Number Space”, is a Proposed Standard document published in December 2012 by Q. Vohra, E. Chen. It updates RFC 4271. It obsoletes RFC 4893. The canonical text is published by the RFC Editor.

Abstract

The Autonomous System number is encoded as a two-octet entity in the base BGP specification. This document describes extensions to BGP to carry the Autonomous System numbers as four-octet entities. This document obsoletes RFC 4893 and updates RFC 4271. [STANDARDS-TRACK]

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 6793 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
This RFC obsoletes
RFC 4893
This RFC updates
RFC 4271
Other RFCs from 2012

Who Is Online

In total there are 119 users online: 0 registered, 112 guests and 7 bots.

Most users ever online was 5,555 on 17 Jul 2026, 3:23 am.

Bots: AhrefsBot Applebot Bingbot Other Bot Other Crawler PetalBot SemrushBot

Users active in the past 15 minutes. Total registered members: 372