Bridging between two routers

Unanswered Question
Jun 10th, 2009

Hi all.

I need to configure bridge beetween router1 and router2.


i configure tunnel between routers, but i don't understand how configure bridge group over tunnel interface.


I have this problem too.
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Paolo Bevilacqua Wed, 06/10/2009 - 22:43

Why do you need to configure bridging in first place ? That usually brings to trouble and more trouble.

oleg090965 Wed, 06/10/2009 - 22:52

I know this, but only bridging can help to work specific application in second network

hclisschennai Wed, 06/10/2009 - 23:12


The below is the configuration

no ip rouiting

int fa 0/0

ip address x.x.x.x

ip bridge-group 1

int fa 0/1

ip add x.x.x.x

ip bridge-group 1

bridge 1 protocol ieee

Hope it helps

oleg090965 Wed, 06/10/2009 - 23:30

It is good, but i need bridge group on tunnel interface. on tunnel interface i have not this command. How router understand that packets from fa0/0 send to tunnel0?

interface Tunnel0

ip unnumbered FastEthernet0/0

tunnel source FastEthernet0/1

tunnel destination x.x.x.x

tunnel mode ipip


interface FastEthernet0/0

ip address

duplex auto

speed auto


interface FastEthernet0/1

ip address y.y.y.y

duplex auto

speed auto

paul.matthews Thu, 06/11/2009 - 01:54

Bridging is not supported on tunnels. If you really need to do this, you need to look at L2 VPN tecnologies, ut as has already been said, SIP and associated protocols are designed to work over routed networks. Yu need to figure out the real problem.

Paolo Bevilacqua Thu, 06/11/2009 - 01:07

No, SIP is designed to work on routed networks. You have a different problem, either in network, or telephony devices.


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