Policy Based Routing Question

Unanswered Question
Jul 15th, 2008

Hello All:

Rather new to routing and am a little fuzzy on how to setup PBR. My scenario

I have an existing 3660 Router with a single T1 terminating in it. The attached 3x internal subnet by default will route out that T with the folowing route statement correct

0.0.0.0 0.0.0.0 MFR1.500

we will be acquiring a second T from another provider and an additional internal subnet 5x will be added. I will need to have 3x continue to route out the MFR1.500 interface.

I need the 5x subnet to route out FA3/0 which is where the 2nd T will terminate. How do I set this up. I've read about PBR but am a little confused and don't want to screw this up.

Thanks

I have this problem too.
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n.nandrekar Tue, 07/15/2008 - 08:45

hi!

Yes you can use PBR to achieve the result you have described.

The following link gives details on how to configure PBR and the steps and required sample config.

http://www.informit.com/content/images/1587050722/samplechapter/1587050722content.pdf

Refer page 35 in the above pdf for PBR explanation and sample configuration.

In brief , you will have to,

1.create access list(acl 1) to match 3x traffic.

2. Create an access list(acl 2) to match 5x traffic.

3. Create a route map with 1st permit statement and match ACL 1. Set the "ip default-interface" to T1, or you can set "ip next-hop" to ISP1's ip.

4. Repeat the above step for ACL 2 creating another permit entry in the route map.

And lastly you have to apply the route map on the interface for PBR.

Please revert if you have any queries further on this.

Regards,

Niranjan

(pls rate if helpful)

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