Efficiency of IPv6 NUD

[Oliver]

On Friday 25 May 2012 11:06:32 Simon Perreault wrote:
> Le 25/05/2012 10:41 AM, Oliver a écrit :
> > Has anyone got any practical results on how fast NUD occurs for
> > <linux/windows/blah>  systems when they have multiple valid default
> > nexthops learned through RAs and one (or all but one) of those
> > nexthop routers then goes offline without cleanly sending a
> > withdraw.
> > 
> > Any relevant radvd timing tweaks would also be of interest.
> 
> See here:
> http://packetlife.net/blog/2011/apr/18/ipv6-neighbor-discovery-high-avail
> ability/
> 
> NUD is no VRRP.
> 
> Simon

Thanks.

Absolutely agree that NUD is no substitute for a real HA protocol - but in 
situations where a few seconds of unreachability is acceptable in a 
failover event, this seems pretty decent.

My one concern is replicating this with radvd since if I remember rightly, 
it mangles the times you pass in the config according to a formula.

Regards,
Oliver