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Forum Discussion
UTM150 WAN failover
Hi all,
I have a UTM150, WAN1 is connected to a Virgin cable superhub. WAN2 is connected to BT ADSL. I have configured auto failover on WAN DNS.
My failover is happening fairly often and I am trying to diagnose why. WHen failure of WAN1 happens, I can reboot the Virgin superhub and the connection to WAN1 is restored. Alternatively, I can leave the Virgin superhub alone and reboot the UTM, this also restores service. It makes me think that there is maybe a false positive or some hang-up between the UTM WAN1 and the Virgin superhub.
It this happens and I am external to the premises, I can remotely connect to the Virgin superhub, whihc leads me to believe it is not a service fault with Virgin or the superhub.
What's the best way of diagnosing this? Is the WAN DNS the best failover method? What should I be looking for in the logs?
Thanks
Graham
Firmware 3.6.1-43
1 Reply
Just a suggestion...
Make sure the WAN DNS failover is configured the way you think it is.
I had a similar issue with an FVS336G and after many months discovered that a colleague had actually set the failover on one WAN link to manually specified DNS servers, one of which was the ISP's DNS and the other an internal DNS server. Needless to say, the internal DNS server was unreachable via the WAN link, so if the 336 couldn't reach the ISP's primary DNS (which was due to a congestion issue at the ISP end), it would try the internal server, couldn't reach that either and fail over.
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