bgp question

What would be the best way to do this:

I have 3 routers connected in "triangle mode" and each router has its
own ISP connection.

Connection to ISP using eBGP (3 different ISPs, three different AS #)
Connection between each other iBGP

Anyway, here is what I want

I have couple of /22 blocks.

I advertise /24 to these ISPs, in case of the failure I do conditional
advertisement , and it works.

Example 1.1.0.0/22 divides into 1.1.0.0/24 , 1.1.1.0/24 , 1.1.2.0/24 ,
1.1.3.0/24

I want to 1.1.0.0/24, and 1.1.1.0/24 to go out via ISP1
1.1.2.0, and 1.1.3.0 via ISP2, but I want ISP2 to also advertise /22, so
in case ISP1 fails I will have my failover without using conditional
advertisements.

Any config examples out there?

Thanks

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Received on Tue Oct 27 2009 - 10:59:18 ART