Transparent Bridging

[fcatalao]

I have two 7206 routers connected to each other over an E1. Routing between the routers is being done with EIRGP.

A 3524 is connected to each 7206. I need to bridge an interface in the 3524 site1 to another interface in the 3524 site2 while at the same time continue to route with EIGRP.

I have tried the following but to no avail:

----------7206 site 1------------

bridge 10 irb

bridge 10 protocol ieee

bridge 10 route ip

int fe0/0.10

bridge 10

int s0/0

ip add t.t.t.1

bridge 10

----------------------------------

----------7206 site 2------------

bridge 10 irb

bridge 10 protocol ieee

bridge 10 route ip

int e0/0.10

bridge 10

int s0/0

ip add t.t.t.2

bridge 10

----------------------------------

Any help would be greatly appreciated.

fernando

[msdonahue]

Could you please descibe how it does not work. Is the bridging working correctly? or is the routing no working correctly?

[fcatalao]

the two equipments that are connected to the 3524 could not ping each other. routing continued.

are you trying to say that the configuration looks ok?

to be more precise this is what i am trying to do.

pc1-----3524#1----7206#1--E1--7206#2---3524#2---pc2.

i am trying to bridge the port that pc1 is connected to (3524#1) port where pc2 is connected (3524#2).

there are other vlans that are connected to the 3524 & 7206 which are being routed.

i´m not sure if i have explained better.

thanks

regards

fernando

[msdonahue]

So PC1 and PC2 are in the same network?

[fcatalao]

yes. actually what´s connected to the 3524 ports are not pc´s (i just used that not to complicate), they are atm switches with ethernet cards. i am not passing thru atm but standard ethernet that i want to bridge from one side to the other.

thank

regards

[msdonahue]

OK. What you need to do is use a BVI. The setup will be as follows.

----------7206 site 1------------

bridge 10 irb

bridge 10 protocol ieee

bridge 10 route ip

int fe0/0.10

bridge 10

int s0/0

bridge 10

int BVI 10

ip add t.t.t.1

----------------------------------

----------7206 site 2------------

bridge 10 irb

bridge 10 protocol ieee

bridge 10 route ip

int e0/0.10

bridge 10

int s0/0

bridge 10

int BVI 10

ip add t.t.t.2

----------------------------------

Do not put any layer 3 configs on the physical interfaces, only on the BVI and make sure that the BVI interface number matches the brifge-group number. This should work.

[fcatalao]

Excellent. It worked. My problem was that I was putting layer 3 add in the serial interface as well.

Thanks

Regards

Fernando