Do not use on any
shared computer
September 7, 2008 02:21am pdt
 
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Attachment Details

BGP with two ISPs

Tags: cisco, routers, BGP config
here is a pic of what i am working with:

ISP A              ISP B
|                |
|                |
|                |
router 1        router 2
        \         /
         \       /
        Router 3

Router 3 connects back to our LAN.
Routers 1 and 2 use BGP to talk to our ISP.

Could someone point me in the right direction on how to setup my BGP.

ISP A is our primary ISP.  ISP B is incase ISP A goes down.

how to i configure this so I do not have to do any manual configuration when ISP A goes 'down'?

Right now i am having problems because router 2 will sometimes advertise a network to ISP B, when all that traffic is going out to ISP A via router 1. Router 1 is also advertising the network.

I would like help with the how to set this up, i can figure out the commands, if someone could tell me the correct, proven way this should work.

thanks.

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Question Stats
Zone: Computer Hardware
Question Asked By: ngravatt
Solution Provided By: ngravatt
Participating Experts: 3
Solution Grade: A
Views: 4
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[+][-]Accepted Solution by ngravatt
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