Technical Summary
Nodes attached to common multi-access link types (e.g., multicast-
capable, shared media, non-broadcast multiple access (NBMA), etc.)
can exchange packets as neighbors on the link, but may not always be
provisioned with sufficient routing information for optimal neighbor
selection. Such nodes should therefore be able to discover a trusted
intermediate router on the link that provides both forwarding
services to reach off-link destinations and redirection services to
inform the node of an on-link neighbor that is closer to the final
destination. This redirection can provide a useful route
optimization, since the triangular path from the ingress link
neighbor, to the intermediate router, and finally to the egress link
neighbor may be considerably longer than the direct path from ingress
to egress. However, ordinary redirection may lead to operational
issues on certain link types and/or in certain deployment scenarios.
This document therefore introduces an Asymmetric Extended Route
Optimization (AERO) capability that addresses the issues.
Working Group Summary
This document is an independent document, not reviewed
by any IETF Working group.
Document Quality
There are no current implementations of this protocol.
The document shepherd and sponsoring AD have both
provided significant review and comments which have
been incorporated by the author.
Personnel
The document shepherd for this document is Joel M. Halpern.
The sponsoring AD for this document is Stewart Bryant