BGP configuration

Answered Question
Jun 4th, 2010
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Dear Expert,


Two ISPs (local ISP and global ISP) will be peered with bgp router and form the multi-homing. We would like to seek for your advice to configure the bgp router located in Hong Kong data center. Attached please find the logical design diagram and below please find the user requirements for your reference:


We would like the local traffics (all Hong Kong traffic) go to local ISP-A and the global traffics (other than Hong Kong traffic) go to ISP-B. Following is the ISP information


ISP-A: peering IP: 192.192.1.1/30

ISP-B: peering IP: 172.172.1.1/30

DMZ: 210.210.1.0/24


Question:

1. Grateful if you could advise on the URL or simple configuration on the outbound traffics

2. Grateful if you could advise on the URL or simple configuration on the inbound traffics

3. how to "force" the inbound traffic go to ISP-B, not ISP-A?


Thank you very much.


rdgs

Correct Answer by Chetan Kumar Ress about 6 years 11 months ago

Hi


As you need to configure BGP Multi-Homing . In Below URL You can get configuration for same & Pratice Lab also.


http://showipbgp.com/bgp-configurations/cisco.html


And For  3. how to "force" the inbound traffic go to ISP-B, not ISP-A?


You can use local prepor weight  to select IPS B over  ISP A (Because it is you local AS ).


Inbound traffic can easily manipulate by using local prep or weight ( Weight is For Cisco only ).



Regards

Chetan Kumar

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Correct Answer
Chetan Kumar Ress Fri, 06/04/2010 - 10:05
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Hi


As you need to configure BGP Multi-Homing . In Below URL You can get configuration for same & Pratice Lab also.


http://showipbgp.com/bgp-configurations/cisco.html


And For  3. how to "force" the inbound traffic go to ISP-B, not ISP-A?


You can use local prepor weight  to select IPS B over  ISP A (Because it is you local AS ).


Inbound traffic can easily manipulate by using local prep or weight ( Weight is For Cisco only ).



Regards

Chetan Kumar

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