RFC 9774 - Deprecation of AS_SET and AS_CONFED_SET in BGP
- Status: Proposed Standard
- Published: May 2025
- Stream: IETF
- Pages: 13
- Updates: RFC 4271, RFC 5065
- Obsoletes: RFC 6472
- Errata: No Errata
Abstract
This document makes the BCP 172 recommendation against using AS_SET and AS_CONFED_SET in BGP into a standards requirement. It prohibits origination of those AS_PATH segment types, updates RFC 4271 and RFC 5065, and obsoletes RFC 6472 to simplify BGP behavior and support deployment of BGP security mechanisms.
Related Resources
- Official Text: RFC 9774
- Official Page: RFC 9774 DataTracker
- Errata: RFC Editor Errata