Carp vhid with vlan id's alignment

David DeSimone fox at verio.net
Tue Jun 21 00:22:27 UTC 2011


Rafael Ganascim <rganascim at gmail.com> wrote:
>
> I'm planning and testing a new FreeBSD router, with vlans and carp
> interfaces. There are a lot of vlans, with high vlan IDs. We have, for
> example:
> 
> dot1q vlan id: 1530
> 
> Iface igb0
>  vlan1530
>   carp1530
>    vhid 10

The VHID is there to help differentiate multiple CARP implementations
on the same broadcast domain.  If you are only going to have one CARP
instance on each vlan, they can all use the same VHID in every vlan,
without conflicting.

-- 
David DeSimone == Network Admin == fox at verio.net
  "I don't like spinach, and I'm glad I don't, because if I
   liked it I'd eat it, and I just hate it." -- Clarence Darrow


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