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DNS resolution failure after BGP failover to the backup link.

wingsonhorizon
Level 1
Level 1

Hi there,

I split my internal networks into two and balance them out to two WAN providers using EBGP and run IBGP on top of Metro connection between two 2821 routers at two different sites(15 miles apart).

I was able to failover with no problem, no ping drop at all. traceroute is fine too. however, when I tried to access to internet or my internal website, it can't resolve and goes no where.

Is there something that I missed like firewall blocking my traffic or DNS somewhere preventing this?

Thank you so much for your help in advance!!!

Ben

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