10-09-2006 05:31 AM - edited 03-03-2019 02:17 PM
I have connections to 2 ISPs terminated on a single router taking full routes.
ISP A- T3 address block xx.xx.xx.xx
ISP B- 2xT1 advertises the same block
I have set the local preference to 500 for ISP A.
I have also prepended our AS for our route advertisement going out ISP B.
This works to steer traffic to ISP A for the vast majority of networks. In some cases ISPs advertise more specific route only to ISP B. This results in a relatively small number of routes pointing to ISP B. It appears that hosts in these networks cannot access our web sites. I have a client in one such network who cannot access our web site.
I tried a static for the client IP point to ISP A with no luck. Any thoughts would be appreciated.
10-09-2006 06:02 AM
We encountered a similiar problem and our ISP was not propagating our pre-pend correctly. You'll have to really bug them to get them to look into it (b/c ISP's never make mistakes :-)
10-10-2006 05:21 PM
Hi
I think to use both the ISP at the same time for redundency and loadbalacing u need to get the one public ip pool from the both ISP.Then only u can get the same.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide