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Forum Discussion

David_Tumlin's avatar
David_Tumlin
Icon for Nimbostratus rankNimbostratus
Aug 06, 2018

GTM/DNS Datacenter question

I have a question regarding the functioning of the F5 DNS product.   The environment: Multiple datacenters, each with a GTM and multiple LTMs GTMs are in a single sync group   A firewall mis...
application delivery
BIG-IP DNS
Andy_McGrath's avatar
Andy_McGrath
Icon for Cumulonimbus rankCumulonimbus
Aug 06, 2018

Yes this is expected behavior. Each GTM/DNS in a sync group needs to be able to communicate via iQuery with all other F5 devices configured, so all other F5 DNS/GTM devices and all LTM devices.

 

When using iQuery (bigip) to monitor other F5 devives results are not shared from one F5 DNS/GTM to others within the group as iQuery basically broadcast information so if all connections are working correctly no need to share data, also iQuery can contain a lot of information so you don't want to duplicate network traffic if not needed.

 

I know is because i asked the same thing a while ago on DevCentral, see the following link: GTM Sync Group, sharing state information