True .. Your point of the ICMPv6 storm is on mark and is one of the drawbacks for this solution.
On 7/16/12 12:39 PM, "Oliver" <[email protected]> wrote: >On Monday 16 July 2012 18:26:08 Rajendra Chayapathi wrote: >> On the HSRP/ND part , this all falls in the First Hop redundancy areana >> and can be achieved via any of the following and each has its merits and >> cons.. >> >> 1) Using ND -- need to tune the "IPv6 nd reachable time" to achieve the >> faster failover >> 2) Using any of the First hop redundancy protocol ( HSRP, VRRP , GLBP) >> 3) Default route selection. >> > >In all honesty, I think using ND as the failover method is a generally >bad >idea - you have no way of ensuring all endpoints take note of or honour >the >router preference flag. > >Additionally, having a 1 second validity lifetime is going to create a >lot of >ICMPv6 spam across the segment - big deal? perhaps not. But when >contrasted >with the fact that it can be wholly avoided using one of the >aforementioned >redundancy protocols, why would you do it? > >Additionally, as an alternative to RAs, you can simply point default at >the >all-routers anycast address. > >Regards, >Oliver >
