johnestate_1382
Feb 21, 2015Nimbostratus
F5 GTM vs Cisco GSS
When all of the members of a Prober pool are down, GTM responds with all members/answers. vs Cisco GSS default behavior - When all of the answers/answer group down it shows no response
On GTM it's configurable. Your problem is that GTM itself isn't responding, but passing the request through to DNS (The internal DNS on the GTM itself). That is then responding with RR records that are composed of all the pool members.
To have GTM not respond if all members are down change the alternate/and or fallback LB method to drop rather that what it's currently set to (i.e. if the primary method fails, which it will if the pool members are all down, you want to drop the request).
H