A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Link State Routing WG of the IETF.
Title : IS-IS Optimal Distributed Flooding for Dense Topologies Authors : Russ White Shraddha Hegde Tony Przygienda Filename : draft-ietf-lsr-distoptflood-01.txt Pages : 13 Date : 2023-01-16 Abstract: In dense topologies (such as data center fabrics based on the Clos and butterfly topologies, though not limited to those exclusively), IGP flooding mechanisms designed originally for sparse topologies can "overflood," or in other words generate too many identical copies of topology and reachability information arriving at a given node from other devices. This normally results in slower convergence times and higher resource utilization to process and discard the superfluous copies. The modifications to the flooding mechanism in the Intermediate System to Intermediate System (IS-IS) link state protocol described in this document reduce resource utilization significantly, while increaseing convergence performance in dense topologies. Beside reducing the extraneous copies it uses the dense topologies to "load-balance" flooding across different possible paths in the network to prevent build up of flooding hot-spots. Note that a Clos fabric is used as the primary example of a dense flooding topology throughout this document. However, the flooding optimizations described in this document apply to any arbitrary topology. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-lsr-distoptflood/ There is also an htmlized version available at: https://datatracker.ietf.org/doc/html/draft-ietf-lsr-distoptflood-01 A diff from the previous version is available at: https://author-tools.ietf.org/iddiff?url2=draft-ietf-lsr-distoptflood-01 Internet-Drafts are also available by rsync at rsync.ietf.org::internet-drafts _______________________________________________ Lsr mailing list Lsr@ietf.org https://www.ietf.org/mailman/listinfo/lsr