Bridge-Group Interface and HSRP

haithamnofal · ‎07-28-2009

Hi,

I have a case where there are 2 ASA Firewalls, 2 Switches, and 2 Routers... The routers are connected to the WAN.

I need to connect the 2 Routers to the 2 switches in full-mesh topology and all will be part of the same subnet. However, I also would like to configure HSRP between the 2 Routers for redundancy.

Of course I need to configure Bridge Virtual interfaces on each router on the 2 router interfaces connected to each switch.

My question is, would HSRP work if I configure it on the BVI interface on each router. Example is:

R1:

interface BVI 1

ip address 10.10.10.1 255.255.255.0

standby 10 ip 10.10.10.254

standby 10 preempt

standby priority 110

R2:

interface BVI 1

ip address 10.10.10.2 255.255.255.0

standby 10 ip 10.10.10.254

Please confirm or advise how can I achieve redundancy on the interface and chassis levels on my case here?

Regards,

Haitham

Laurent Aubert · ‎07-28-2009

Hi,

Yes it's supported.

Now how the other devices are connected to the switches ? If only the routers are dual attached, you could have one subnet per switch and avoid the BVI configuration.

HTH

Laurent.

haithamnofal · ‎07-29-2009

Hi,

Thanks for your confirmation.

Why are you recommending avoiding BVI configuration is it about complexity or is there any limitation in BVI?

Regards,

Haitham

Laurent Aubert · ‎07-29-2009

It's not a question of limitation. It's just I prefer HSRP over STP for link failure detection ;-)

HTH

Laurent.