2008/10/24 <[EMAIL PROTECTED]>: > > I have been trying to figure out how to do this and maybe someone will be > able to help me out. > > I have two ISP connections ISP ATT and ISP Cogent. > > (ISP Cogent) (ISP ATT) > | | > RO ------------------- R1 > > > ATT would be used for primarily internet and access to our webservers. > > Cogent would be primarily used to access Cognet's network that use VPN for > incoming connections only. I do not want to have other networks besides > Cogent's network using this path to access our webserver. > > I would like to have each other act as a backup for one another. For instance > if ATT fails I want everyone on the internet use Cogent to access me. If > Cogent fails I want everyone on the internet and the VPN connections on > Cogent's network to use ATT. > > So basically what I was thinking to setup is to accept a default router from > ATT and Cogent. Lower the local preference of Cogent and that way I would > accomplish using ATT as primary internet access.
I would: -- forget about conditionals -- advertise three routes to Cogent. My whole network, with a lot of prepends, and the two halves of my network, without prepends but with a community saying "don't export". -- receive from Cogent their networks (the VPN things you want) and default. If necessary receive full routes and filter out non-default non-Cogent routes. Set local preference lower than default on default route from Cogent, and local-preference higher than default on Cogent routes. -- advertise whole network to ATT, without prepends. -- receive default route from ATT, with default local-preference. If I've correctly understood what you want then that should do it. -- HTH, Nathan _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
