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Forum Discussion

Mariusz_B's avatar
Mariusz_B
Icon for Nimbostratus rankNimbostratus
Sep 29, 2014

DNS failover

Hi all,   Can someone advice please if it's possible to monitor a VPN line from GTM, and respond to a DNS query based on the line status?   For example client uses 2 VPN lines (primary to DC1 a...
application delivery
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BIG-IP DNS
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Mariusz_B's avatar
Mariusz_B
Icon for Nimbostratus rankNimbostratus
Sep 30, 2014

Hi Mohamed,

 

I have a domain example.com hosted on my GTMs primary one with IP 1.1.1.1 and secondary with 2.2.2.2 Client has a local DNS which says something like:

 

zone "example.com" { type forward; forward only; forwarders { 1.1.1.1; 2.2.2.2; };

 

There is no way to say: forwarders {primary 1.1.1.1; secondary 2.2.2.2}

 

Mohamed_Lrhazi's avatar
Mohamed_Lrhazi
Icon for Altocumulus rankAltocumulus
Sep 30, 2014
OK. and the zones are hosted means they are in GTM's BIND/ZoneRunner, and in the profile applied to the listeren/VIP you are saying use local BIND? and then what you are thinking about is applying an irule to the VIP, to reject all requests for the zone, if the corresponding DC is unreachable? If this all correct, then what you are missing is just: how do I create a pool/monitor, than can monitor reachability to remote DC?