Forum Discussion
Jimbo_01_43689
Nimbostratus
NimbostratusGTM failover between data centers
Hi,
I need some help understanding how F5 GTM fails over between data centers in the event of a failed data center scenario. If we have one single GTM appliance in each data center A & B and DC...
Hamish
Cirrocumulus
CirrocumulusGTM (should if implemented correctly) fails over in exactly the same way any other dns service (eg bind) fails over...
All your GTM VS's are listed as NS records for the domain (or traffic passes through them as transparent inline, but that implies limitations so i never deploy like that). So when resolution is required for the delegated domain, they get queried... If one fails, the other(s) keep responding... As far as the outside world is concerned they're just another dns server. The smarts is in their montoring and decision making on which ips to serve.
H
