Hi, Pardon the cross-posting (please restrict any replies to a single list if possible).
Over the last few IETF's we have seen a few drafts about routing protocols for use in networks (especially data centres) where there is a high level of redundancy in the topology (such as CLOS, Dragonfly, etc.), and a desire to dynamically load-balance traffic across parallel paths to make better use of the resources and avoid congestion. Existing routing protocols do not achieve this well, so new proposals have been made. Adaptive routing and perceptive routing are approaches are designed to react to congestion and variations in traffic load to distribute traffic across parallel paths to make best use of all network resources. Such load balancing may take place on individual hops in the manner of ECMP, but it is far more effective if it utilises dynamic multi-hop load balancing. Dynamic load balancing may also be applicable in general networks. Although those topologies are not as dense or interconnected as in data centres, multiple paths may exist giving wider potential for the application of adaptive/perceptive. We are having a short side meeting in Dublin (17.00 on Monday) to discuss the topic of adaptive or perceptive routing. The main objective of the meeting is to determine whether this is a topic that the IETF should work on, and if so how/where. We will briefly discuss the problem space and enumerate the proposals to address the challenges, but we will spend most of the time discussing whether this should receive more attention in the IETF. If there is common ground, the meeting will attempt to scope the work and develop a proposal to take to the Routing ADs. It's not clear to us whether this work belongs in an existing working group or should get its own space for discussion, but we'd like to see what the state of the art is. Best, Adrian and Xuesong _______________________________________________ rtgwg mailing list -- rtgwg@ietf.org To unsubscribe send an email to rtgwg-le...@ietf.org
