[j-nsp] VRRP between mixed M7i and M10i

[Joel jaeggli]

On 9/3/12 06:48 , sthaug at nethelp.no wrote:
>>>> 1) Did someone have a chance to configure a subnet with 4 Mixed routers M7i
>>>> and M10i and VRRP enabled between all of them ?
>>>
>>> VRRP runs between *two* routers. Aside from that, no specific problems
>>> with M7i vs M10i (and why should there be? M7i and M10i are hardware
>>> and software wise very much alike).
>>
>> VRRP can run on more than two routers just fine.  All but one router
>> on any LAN will become a backup.
> 
> Thanks for the correction. A followup question: Under what circumstances
> would you want to configure VRRP on more than two routers on the same
> LAN segment? We've always used just two...

if you have 4 routers...

rtr0
vrrp-priority 101
rtr1
vrrp-priority 99
rtr2
vrrp-priority 97
rtr3
vrrp-priority 95

does exactly what you think it would.

In practice I've done this when shifting traffic beween two pairs (a new
and old pair) of routers.

> Steinar Haug, Nethelp consulting, sthaug at nethelp.no
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