Redundant Route on 2801

Answered Question
Dec 1st, 2008

Hello,

We have a Cisco 2801 router, Serial interface is connected to T1 passing voice and data between the branch office and the main office and works fine. Interface f0 is connected to the internal network of the branch office, we would like to connect interface f1 to a wireless bridge that connects to the main office. We would like to have the wireless bridge to be the main route the main office and the T1 to be the backup route in case there was a failure on the wireless. how to configure the 2801 (version 12.3) to allow redundancy and eliminate the loops.

I have this problem too.
0 votes
Correct Answer by Giuseppe Larosa about 8 years 21 hours ago

Hello Wajma,

a further refinement to what Jon has suggested in order to improve convergence

you can track the reachability of the wireless lan IP next hop.

http://www.cisco.com/en/US/docs/ios/12_3/12_3x/12_3xe/feature/guide/dbackupx.html

Hope to help

Giuseppe

Correct Answer by Jon Marshall about 8 years 22 hours ago

Wajma

The simplest solution is to use 2 default-routes

ip route 0.0.0.0 0.0.0.0

ip route 0.0.0.0 0.0.0.0 200

Note the 200 at the end of the second default-route. This makes the route a floating static. If the next-hop via the wireless becomes unreachable then the next-hop via the T1 will be used. If the wireless comes back up then it will revert to the wireless next-hop.

Jon

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (2 ratings)
Loading.
Correct Answer
Jon Marshall Mon, 12/01/2008 - 13:01

Wajma

The simplest solution is to use 2 default-routes

ip route 0.0.0.0 0.0.0.0

ip route 0.0.0.0 0.0.0.0 200

Note the 200 at the end of the second default-route. This makes the route a floating static. If the next-hop via the wireless becomes unreachable then the next-hop via the T1 will be used. If the wireless comes back up then it will revert to the wireless next-hop.

Jon

Wajma_2 Mon, 12/01/2008 - 13:19

Thank you so much for fast response.

Best Regards.

Wajma

Actions

This Discussion