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Forum Discussion

Munney_64889's avatar
Munney_64889
Icon for Nimbostratus rankNimbostratus
Aug 20, 2017

GTM sync group and prober pool

Hi guys - couple questions about a new GTM sync group I'm setting up.   We have 4 GTMs. Do I need to do a gtm_add from every device to every device in a full mesh? ie. 1-2, 1-3, 1-4....2-3, 2...
application delivery
BIG-IP DNS
gsharri's avatar
gsharri
Icon for Altostratus rankAltostratus
Aug 22, 2017
  1. I'm not 100% sure on this but I think simply running gtm_add on a new gtm to join an existing sync group will result in all the gtms trusting each other. Shouldn't need to run on every gtm.
  2. I assume when you say "probe" you are referring to health monitors and not LDNS probes (they are very different). By default the monitors are always run by a bigip in the local DC. In other words your LA gtms would NOT be monitoring the NYC ltms and vice-versa. Prober pool does allow you to select which bigips do the monitoring in a DC so if you would like to have some control over it do that but shouldn't be necessary.

Scott