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BGP-4 Path Attribute Filtering Capability
draft-haas-idr-path-attribute-filtering-02

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Jeffrey Haas , John Scudder
Last updated 2026-02-21 (Latest revision 2025-08-20)
RFC stream (None)
Intended RFC status (None)
Formats
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
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This Internet-Draft is no longer active.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

Path Attributes in the BGP-4 protocol (RFC 4271) carry data associated with BGP routes. Many of the Path Attributes carried in BGP are intended for limited scope deployment. However, the extension mechanism defined by BGP that carries these attributes often carries them farther than necessary, sometimes with unfortunate results. This document defines a mechanism using BGP Capabilities (RFC 5492) that permits eBGP speakers to determine what Path Attributes should be permitted to cross external BGP routing boundaries.

Authors

Jeffrey Haas
John Scudder

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)