How to add new GTM to existing synchronization group running older software version
I have a new GTM running 11.5.3 and two older ones running 10.2.3. I'm trying to add the new GTM to the existing synchronization group, however I keep getting this error:
iQuery connection to xx.xx.xx.xx (public IP) failed.
Is big3d running?
Is tcp port 4353 access allowed?
I have confirmed access through the firewalls in both directions. I have looked up big3d, but I haven't found much information about that.
Also, I have found two pieces of documentation that say opposite things about running different software versions in the same synchronization group:
you can
you can't
Is there any way to do this so I don't have to manually copy over the zone files and such to the new GTM?
The second article is a little misleading. It will not work out of the box with different software versions, but it should add - Yes it's possible. You'll need to ensure the big3d daemons match, ie install the latest big3d daemon on the older units.
Check this article out, it should clarify things for you:
Overview of big3d version management
https://support.f5.com/kb/en-us/solutions/public/13000/700/sol13703.html
You can then install big3d on the older systems with big3d_install
read about big3d_install and other related sync group scripts here:
Overview of the BIG-IP GTM big3d_install, bigip_add, and gtm_add utilities (11.x - 12.x)
https://support.f5.com/kb/en-us/solutions/public/13000/300/sol13312.html
Overview of the BIG-IP GTM big3d_install, bigip_add, and gtm_add utilities (9.x - 10.x)
https://support.f5.com/kb/en-us/solutions/public/8000/100/sol8195.html