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SynACk_128568's avatar
SynACk_128568
Icon for Cirrostratus rankCirrostratus
Mar 09, 2015

GTM sync group working

Hi All,   wanted to confirm working of gtm in SYNC group :   If there is a sync group containg 5 GTM's in 1 asia ,3 US and 1 europe . And the GTM has servers configured and using bigip monitor...
BIG-IP DNS
Brad_Parker_139's avatar
Brad_Parker_139
Icon for Nacreous rankNacreous
Mar 10, 2015

I believe a monitor will only mark the pool member down on the local GTM, but when you administratively take a member offline it will propagate to all GTMs. I believe this is the reason prober pool exist. To probe from multiple locations.

 

Brad_Parker_139's avatar
Brad_Parker_139
Icon for Nacreous rankNacreous
Mar 10, 2015
I still haven't found a good way to test this as generally the iQuery and the sync traffic would share a network segment, so I haven't found a way to make the health check fail just for one GTM and still have connectivity to sync. My assumption is it would behave similar to LTM in that a failed monitor status doesn't get replicated since its technically not a configuration change. Try to test in a lab for a definitive answer.