Best Practice for GTM/LTM Monitors
I am having some trouble understanding the interaction of the health monitors on a GTM vs the associated LTM and the best way to be sure that a node/service is up without sending it unnecessary traffic. Our scenario is this: We have 2 ISP's. There is a virtual server created for a given service (e.g. a web server) for each ISP. Each of these virtual servers points to the same LTM pool. The 2 virtual servers are then put in a GTM pool associated with the DNS record. I had thought that having an http(s) monitor on the GTM pool and the LTM pool was the correct way to go. Based on reality and some further research, I am no longer sure that is accurate. Is it true that in this scenario, the nodes are getting health monitor requests from 3 locations (virtual server 1, virtual server 2, and LTM pool)? If so, what is a best practice way to configure health monitoring here?
Note: As you can infer from my usage of "GTM", we are on version 11.