RFC 5668 · PROPOSED STANDARD · 2009
SUN · 14 JUN 2026
4-Octet AS Specific BGP Extended Community
Overview
RFC 5668, “4-Octet AS Specific BGP Extended Community”, is a Proposed Standard document published in October 2009 by Y. Rekhter, S. Sangli, D. Tappan. The canonical text is published by the RFC Editor.
Abstract
This document defines a new type of a BGP extended community, which carries a 4-octet Autonomous System (AS) number. [STANDARDS-TRACK]
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 5668 is hosted at rfc-editor.org. Available in TXT,HTML.
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- RFC 5672 RFC 4871 DomainKeys Identified Mail Signatures -- Update
- RFC 5673 Industrial Routing Requirements in Low-Power and Lossy Networks
- RFC 5674 Alarms in Syslog
- RFC 5675 Mapping Simple Network Management Protocol Notifications to SYSLOG Messages
- RFC 5660 IPsec Channels: Connection Latching
- RFC 5676 Definitions of Managed Objects for Mapping SYSLOG Messages to Simple Network Management Protocol Notifications