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Neighbor Unreachability Detection is too impatient

Document Type Replaced Internet-Draft (individual)
Expired & archived
Authors Igor Gashinsky , Erik Nordmark
Last updated 2013-05-10 (Latest revision 2011-07-07)
Replaced by draft-ietf-6man-impatient-nud
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-6man-impatient-nud
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This Internet-Draft is no longer active.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:


IPv6 Neighbor Discovery includes Neighbor Unreachability Detection. That function is very useful when a host has an alternative, for instance multiple default routers, since it allows the host to switch to the alternative in short time. This time is 3 seconds after the node starts probing. However, if there are no alternatives, this is far too impatient. This document proposes an approach where an implementation can choose the timeout behavior to be different based on whether or not there are alternatives.


Igor Gashinsky
Erik Nordmark

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