IS-IS Flooding Reduction in MSDC

Document Type Expired Internet-Draft (individual)
Authors Xiaohu Xu  , Luyuan Fang  , Jeff Tantsura  , Shaowen Ma 
Last updated 2018-07-16 (latest revision 2018-01-09)
Stream (None)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active.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


IS-IS is commonly used as an underlay routing protocol for MSDC (Massively Scalable Data Center) networks. For a given IS-IS router within the CLOS topology, it would receive multiple copies of exactly the same LSP from multiple IS-IS neighbors. In addition, two IS-IS neighbors may send each other the same LSP simultaneously. The unneccessary link-state information flooding wastes the precious process resource of IS-IS routers greatly due to the fact that there are too many IS-IS neighbors for each IS-IS router within the CLOS topology. This document proposes some extensions to IS-IS so as to reduce the IS-IS flooding within MSDC networks greatly. The reduction of the IS-IS flooding is much beneficial to improve the scalability of MSDC networks.


Xiaohu Xu (
Luyuan Fang (
Jeff Tantsura (
Shaowen Ma (

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