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BGP Next-next Hop Nodes

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Kevin Wang , Jeffrey Haas
Last updated 2024-06-16 (Latest revision 2023-12-14)
RFC stream (None)
Intended RFC status (None)
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This Internet-Draft is no longer active.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:


BGP speakers learn their next hop addresse for NLRI in [RFC4271] in the NEXT_HOP field and in [RFC4760] 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. [I-D.ietf-idr-entropy-label] defines the "Next Hop Dependent Capabilities Attribute" (NHC) which allows a BGP speaker to signal the forwarding capabilities associated with a given next hop. This document defines a new NHC capability, the Next-next Hop Nodes (NNHN) capability, which can be used to advertise the next-next hop nodes associated with a given next hop.


Kevin Wang
Jeffrey Haas

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