[j-nsp] Adjusting OSPF metric based on VRRP state?

[Mike Williams]

Thanks for all the responses.

Clustering does indeed seem to be by far the best solution.
I think I'll take a crack at an event script anyway, as I haven't touched them 
before, and any knowledge would probably be useful eventually.

On Thursday 27 September 2012 17:30:42 Mike Williams wrote:
> Hey all,
> 
> I've been poking around for a while now but haven't been able to find
> anything, which does pretty much suggest this isn't possible.
> 
> So, I've got 2 J6350s in full flow-mode guise on 11.4, but not a cluster.
> I am trying to use VRRP for some HA though.
> Because they're both "on" the same network segment they both announce that
> prefix into OSPF, and that's causing me a problem.
> If a TCP session arrives via J1 and J2 is the VRRP master, J2 will
> drop/reject the SYN-ACK as it didn't deal with the SYN.
> 
> Now I know I could set "flow tcp-session no-syn-check" to effectively ignore
> the problem, or given suitable amounts of interest/time/effort we could
> probably cluster the 2 devices (different Colo providers in the same
> building), or even use some creativity with static routes (urgh) to bypass
> OSPF entirely, but I'm hoping there is some magic OSPF/VRRP knob I haven't
> been able to find yet that will alter the OSPF metric for a logical
> interface based on the VRRP state.
> 
> Does anyone know if such a knob exists?
> 
> Honestly I'm not holding out much hope, as there isn't a direct corrolation
> between VRRP and logical interfaces (many VRRP groups per unit).
> 
> 
> Thanks
-- 
Mike Williams
Leading Systems Administrator - Infrastructure Support Group
Comodo CA Ltd
Office Tel Europe: +44 (0) 161 8747070
Fax Europe: +44 (0) 161 8771767