GTM upgrade to new version
Hi Guys, I am planning to upgrade F5 GTM from version 11.5.3 to new recommended version. Currently, I have two standalone GTM in each DC. Both GTM's are in Sync. Currently the LTMs communicating with GTM are running 11.5.3 and some are running on 12.1.2.
Not sure, if version 13.1.0 is the stable as compared to 12.1.2. Either GTM version support other older version LTMs. All the LTM are currently in production and cannot afford a downtime after I upgrade GTM to version 13. Please advice
Also the GTM upgrade steps that I will take is as follow, please recommend for any improvement.
1- Break the sync between GTMs 2- Disable the listener of DC B and start the switch the boot drive. 3- Reboot the device. 4- Activate the listener of DC B and Disable listener of DC A 5- Upgrade GTM of DC A and switch the boot location 6- Reboot the device. 7- enable the sync between GTM's