Area Proxy for IS-IS

Document Type Replaced Internet-Draft (lsr WG)
Authors Tony Li  , Sarah Chen  , Vivek Ilangovan  , Gyan Mishra 
Last updated 2020-06-29 (latest revision 2020-06-23)
Replaces draft-li-lsr-isis-area-abstraction
Replaced by draft-ietf-lsr-isis-area-proxy
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
plain text xml htmlized pdfized bibtex
Stream WG state Adopted by a WG
Document shepherd Acee Lindem
IESG IESG state Replaced by draft-ietf-lsr-isis-area-proxy
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to Acee Lindem <>

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Link state routing protocols have hierarchical abstraction already built into them. However, when lower levels are used for transit, they must expose their internal topologies to each other, leading to scale issues. To avoid this, this document discusses extensions to the IS-IS routing protocol that would allow level 1 areas to provide transit, yet only inject an abstraction of the level 1 topology into level 2. Each level 1 area is represented as a single level 2 node, thereby enabling greater scale.


Tony Li (
Sarah Chen (
Vivek Ilangovan (
Gyan Mishra (

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