Bridging with Routers?

[joenok]

I have been given a few commands to bridge 2 different WAN sites because a software vendor says they have to be on the same LAN. the commands given are

bridge irp

interface FastEthernet0/1
bridge-group 1

interface ATM2/IMA1.2 point-to-point
bridge-group 1

interface BVI1
ip address 172.16.x.x

router eigrp 1
passive interface BVI1


then I guess the same on the other side?

OPEN TO ANY SUGGESTIONS!

thanks

 

[joenok]

I am curious if the BVI1 interface IP address just has to be on the same subnet? or does it need to be the network address? I guess since it's bridging this interface it just has to be on the same subnet? I'm guessing here. The deal here is that we have a backup server that has to be on the same LAN as our primary server, when the primary goes down, a script will change the IP and Mac address of the secondary to match the primary, and if it's on the same LAN (hence the bridge) it should start replying to the broadcasts intended for the primary.

thanks for any help!!!!!

 

[lambent]

I think the IP addresses on the BVI interfaces on both routers should be different but on the same subnet.

Btw you should have the following commands too:

bridge irb
bridge 1 protocol ieee
bridge 1 route ip

 

[joenok]

thanks Lambent!

I mistyped my first bridge irp - should've been bridge irb

I also needed to add the 2 bridge 1 protocol ieee
and bridge 1 route ip commands,

since its going to be on the same LAN the IP of the interface BVI1 should just have to be different and on the same subnet right, no routing going on between so that should take care of it right?

thanks for your help!

 

[lambent]

Yes it's just a layer-2 bridge unless you have other subnets in your routers then you may need either static or dynamic routing.