Bridging Ethernet Ports of 1841 Router

Answered Question
Apr 5th, 2009
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Hi Everybody.


I am trying to configure Cisco 1841 Router Ethernet ports fa 0/0 & fa 0/1 into a single bundle similar to Teaming which is done in Servers.


So that we can configure one IP address for both the ethernet ports and connect two cables for redundancy.


Is it possible to achieve this design? Kindly help


R.B.Kumar

Correct Answer by Giuseppe Larosa about 8 years 2 months ago

Hello R. B. Kumar,

you can do this with IRB but only one physical link will be active at any given time.


bridge 1 protocol ieee

bridge 1 route ip


int f0/0

no ip addr

bridge-group 1

int f0/1

no ip addr

bridge-group 1


int BVI1

desc logical L3 interface for bridge-g 1

ip address 10.10.10.1 255.255.255.0

no sh


STP will block one of the two links


Redundancy can be achieved and you can connect the two cables to two different lan switches


Hope to help

Giuseppe


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Correct Answer
Giuseppe Larosa Sun, 04/05/2009 - 23:28
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Hello R. B. Kumar,

you can do this with IRB but only one physical link will be active at any given time.


bridge 1 protocol ieee

bridge 1 route ip


int f0/0

no ip addr

bridge-group 1

int f0/1

no ip addr

bridge-group 1


int BVI1

desc logical L3 interface for bridge-g 1

ip address 10.10.10.1 255.255.255.0

no sh


STP will block one of the two links


Redundancy can be achieved and you can connect the two cables to two different lan switches


Hope to help

Giuseppe


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