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Notification for Adaptive Routing

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Haibo Wang , Hongyi Huang
Last updated 2024-04-25 (Latest revision 2023-10-23)
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active.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


Large-scale supercomputing and AI data centers utilize multipath to implement load balancing and improve link reliability. Adaptive routing (AR), which is widely used in direct topology such as dragonfly, can dynamically adjust routing policies based on path congestion and failures. When congestion or failure occurs, in addition for the local node to apply AR, the congestion/failure information also needs to be sent to other nodes in a timely and accurate manner, so as to enforce AR in other nodes to avoid exacerbating congestion on the path. This document specifies Adaptive Routing Notification (ARN) for disseminating congestion detection and congestion elimination proactively.


Haibo Wang
Hongyi Huang

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