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IS-IS Routing for Spine-Leaf Topology

Document Type Expired Internet-Draft (lsr WG)
Expired & archived
Authors Naiming Shen , Les Ginsberg , Sanjay Thyamagundalu
Last updated 2020-03-05 (Latest revision 2019-09-02)
Replaces draft-shen-isis-spine-leaf-ext
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state WG Document
Document shepherd Acee Lindem
IESG IESG state Expired
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to Acee Lindem <>

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document describes a mechanism for routers and switches in a Spine-Leaf type topology to have non-reciprocal Intermediate System to Intermediate System (IS-IS) routing relationships between the leafs and spines. The leaf nodes do not need to have the topology information of other nodes and exact prefixes in the network. This extension also has application in the Internet of Things (IoT).


Naiming Shen
Les Ginsberg
Sanjay Thyamagundalu

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