[j-nsp] VRRP and preempt

[Pekka Savola]

On Sun, 16 Jul 2006, Jee Kay wrote:
> I've got a pair of M5s (running 6.3R1.4 which I know is old etc etc) 
> that present a number of VRRP addresses to end systems. Both of them 
> have 'preempt { hold-time 600; }' configured for all of their 
> addresses.
>
> Despite this, when the 'primary' router reboots and comes back online,
> it _immediately_ takes ownership of all the VRRP addresses resulting
> in an outage as it seems to start its VRRP processes before its OSPF
> processes and therefore is clueless as to what to do with the data
> it's just decided it should be getting.
>
> Has anyone else seen this?

I just looked at the logs from the latest SW upgrade, and VRRP 
mastership is switched back after a bit over 8 minutes after OSPF 
adjacencies have been established (with preempt hold-time 600), so 
this seems to be working as expected at least in our scenario in 7.5SR 
or so.

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings