Re: bgp question

Here is some documentation on multiHoming BGP.

http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a008009456d.shtml

Mark Jackson, CCIE#4736

Sent from my iPhone
Please excuse spelling errors

On Oct 27, 2009, at 9:15 AM, "Marcin Zgola" <MZgola_at_netrixllc.com>
wrote:

> 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
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________

> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Tue Oct 27 2009 - 09:35:07 ART