IS-IS Topology-Transparent Zone

Document Type Replaced Internet-Draft (individual)
Authors Huaimo Chen  , Richard Li  , Yi Yang  , Yanhe Fan  , Ning So  , Vic Liu  , Mehmet Toy  , Lei Liu  , Kiran Makhijani 
Last updated 2020-08-18
Replaced by draft-ietf-lsr-isis-ttz
Stream (None)
Intended RFC status (None)
Expired & archived
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Stream Stream state (No stream defined)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document presents a topology-transparent zone in an area. A zone is a block/piece of an area, which comprises a group of routers and a number of circuits connecting them. It is abstracted as a virtual entity such as a single virtual node or zone edges mesh. Any router outside of the zone is not aware of the zone. The information about the circuits and routers inside the zone is not distributed to any router outside of the zone.


Huaimo Chen (
Richard Li (
Yi Yang (
Yanhe Fan (
Ning So (
Vic Liu (
Mehmet Toy (
Lei Liu (
Kiran Makhijani (

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