I support this draft. Allowing > 3 retransmit is useful even for low-power nodes as it saves power of processing/signalling for rebuilding the NCEs for sleepy nodes.
It'll be good to specify a default MAX_*_CAST_SOLICIT value and a max-value in the draft for the deployment/implementation when there is no default alternative router in the link. This will save some additional signaling traffic noise in the event of misconfiguration. -Samita -----Original Message----- From: ipv6-boun...@ietf.org [mailto:ipv6-boun...@ietf.org] On Behalf Of Erik Nordmark Sent: Monday, May 23, 2011 11:46 AM To: ipv6@ietf.org Subject: Neighbor Unreachability Detection is too impatient This draft proposes to change the requirement that NUD can not retransmit more than three times, so that NUD can be more robust against temporary network outages. Comments? Erik -------- Original Message -------- Subject: New Version Notification for draft-nordmark-6man-impatient-nud-00.txt Date: Mon, 23 May 2011 11:43:16 -0700 From: internet-dra...@ietf.org To: nordm...@cisco.com CC: nordm...@cisco.com A new version of I-D, draft-nordmark-6man-impatient-nud-00.txt has been successfully submitted by Erik Nordmark and posted to the IETF repository. Filename: draft-nordmark-6man-impatient-nud Revision: 00 Title: Neighbor Unreachability Detection is too impatient Creation date: 2011-05-23 WG ID: Individual Submission Number of pages: 5 Abstract: 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. The IETF Secretariat -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 -------------------------------------------------------------------- -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
