ForeFront TMG ISP Redundancy - Lost of internet connectivity
I set up ISP redundancy on Forefront TMG that has my exchange 2010 server published through it. If both external NICs are enabled, I lose internet connectivity. If either NICs are enabled, and the other disabled, I get internet connectivity. Any ideas?
January 17th, 2014 1:52pm

Hi,

Based on my knowledge, it may be caused by path mismatch.

Simply to say, dns request goes in through the ISP1 and dns reply goes out through ISP2.

However, we still need you to verify this, you can capture the packets on remote users to see if the destination IP in dns request and the source IP in dns reply are the same.

Please also check the TMG live logging to see if there is any error information.

Best Regards

Quan Gu

Free Windows Admin Tool Kit Click here and download it now
January 19th, 2014 8:07am

This topic is archived. No further replies will be accepted.

Other recent topics Other recent topics