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Forum Discussion

Skuba_85554's avatar
Skuba_85554
Icon for Nimbostratus rankNimbostratus
Nov 10, 2008

3dns/gtm and ltm question

hi     sorry if this question sounds a little basic... i have actually been on the gtm v9x training course back in june but this is my first attempt at a basic gtm config and i would apprec...
config
design
dennypayne's avatar
dennypayne
Icon for Employee rankEmployee
Nov 10, 2008
I'm not totally clear on whether you have 3-DNS (v4) or GTM (v9), but in either case the same principle should work, if you have the 2 GTM's in a sync group, and they are monitoring the 2 LTM's, they should be able to use the Global Availability metric in a standard config to have DC1 as the primary LTM and DC2 as the backup. You wouldn't have to "flick a switch", GTM just begins handing out DC2 LTM addresses if the LTM in DC1 fails.

 

 

It doesn't matter where the devices are as long as they are able to monitor the LTM's on their public-facing interfaces (using iQuery on port 4353 as well as ssh-22 and https-443).

 

 

Denny