BGP Next-next Hop Nodes
draft-ietf-idr-next-next-hop-nodes-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 | Kevin Wang , Jeffrey Haas , Changwang Lin , Jeff Tantsura | ||
| Last updated | 2026-04-23 (Latest revision 2025-10-20) | ||
| Replaces | draft-wang-idr-next-next-hop-nodes | ||
| RFC stream | Internet Engineering Task Force (IETF) | ||
| Formats | |||
| Reviews |
BGPDIR Early review
(of
-01)
by Bruno Decraene
On the right track
OPSDIR Early Review due 2026-09-15
Incomplete
OPSDIR Early Review due 2026-09-15
Incomplete
RTGDIR Early Review due 2026-09-15
Requested
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| Additional resources | Mailing list discussion | ||
| Stream | WG state | WG Document | |
| 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This Internet-Draft is no longer active.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
BGP speakers learn their next hop addresses for NLRI in RFC 4271 in the NEXT_HOP field and in RFC 4760 in the "Network Address of Next Hop" field. Under certain circumstances, it might be desirable for a BGP speaker to know both the next hops and the next-next hops of NLRI to make optimal forwarding decisions. One such example is global load balancing (GLB) in a Clos network. Draft-ietf-idr-entropy-label defines the "Next Hop Dependent Characteristics Attribute" (NHC) which allows a BGP speaker to signal the forwarding characteristics associated with a given next hop. This document defines a new NHC characteristic, the Next-next Hop Nodes (NNHN) characteristic, which can be used to advertise the next- next hop nodes associated with a given next hop.
Authors
Kevin Wang
Jeffrey Haas
Changwang Lin
Jeff Tantsura
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)