Technical Summary
This document discusses how alternate semantics of the ECN field can
co-exist where not all routers in a network are configured for a single
interpretation of codepoints. Also discussed are the issues raised by
nodes, including endsystems, configured for alternate-ECN usages. This
document can be used as a means of migration from one alternate-ECN to
another, where not all nodes can be configured to change at the same
time. Additionally, means for a node (router) to determine which alternate
to use with which packet is specified. And finally, this document
discusses how well alternate-ECN traffic performs where it co-exists with
competing traffic on a path.
Working Group Summary
There is strong consensus in the WG to publish this document. It has been
reviewed by several people prior to the WG last call. Comments raised
earlier have all been addressed. There are no outstanding open issues wrt
this document.
Protocol Quality
This document has been well reviewed in the WG and comments raised have
been addressed.
James Polk (jmpolk@cisco.com) has acted as PROTO Document Shepherd for
this document.
Lars Eggert (eggert@netlab.nec.de) has reviewed this document for the
IESG.