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Forum Discussion

mkyrc's avatar
mkyrc
Icon for Cirrus rankCirrus
Jun 11, 2024

GTM answer based on pool member status

Hello, I'd like to configure GTM to answer FQDN request with specific IP address in answer based on status of another GSLB pool member.  Example: I have two GSLB pools: pool1 (there are members lo...
application delivery
GTM DNS
TimRiker's avatar
TimRiker
Icon for Cirrocumulus rankCirrocumulus
Sep 11, 2024

generally we do this with LTM plus GTM.

Two LTM vips are created, one in each datacenter. Each uses the data center pool. They reflect their availability based on the status of that pool

One GTM enty is created with the two LTM vips as pool members. DNS then resolves in the GTM vip based on the status of the LTM vips in it's pool.

We often apply topology such that machines in dc1 will use the LTM vip in dc1 if available, and machines in dc2 will use the LTM vip in dc2 if available. Either will fail over to the other datacenter based on the GTM replies.