Sync GTM with different OS than master GTM

Question

I have a GTM in production running 11.6.0 and configured a new GTM with 13.1.1. I ran the gtm_add script and the process ran, but it doesn't show that it is in sync. netstat _anp | grep 3d shows that it didn't connect. I did change the sync group name from default to something else and enabled sync, to no avail.&nbsp;

crodriguez · Answer

I suggest you check to make sure you have the same version of big3d running on your BIG-IP v11.6.0 system as you have on your BIG-IP v13.1.1 system. See K13703: Overview of big3d version management for more details. Per the article: "Sync group members should run the same big3d version"&nbsp;

vfb · Answer

They don't. I thought it was OK to run different big3d versions? How do I downgrade the device running 13.1.1 to 11.6 big3d?&nbsp;

crodriguez · Answer

You want to upgrade the big3d version on your v11.6.0 system to the big3d version on your v13.1.1 system. It should be located in the /shared/bin/ directory. You can copy the v13.1.1 version to your v11.6.0 system (make a backup of the existing version first), then restart big3d. The article I linked to has instructions in it. If that still doesn't clear things up, then we can take it from there.&nbsp;

vfb · Answer

The 11.6 device is in production and I don't want to interrupt the process on that device. Can I downgrade the 13.1.1 device to the 11.6 big3d version and then run sync and shit down the 11.6 devices after? &nbsp;

crodriguez · Answer

I do not suggest downgrading your v13.1.1 system's big3d to the 11.6.0 version. Since you already have both GTM systems in a sync group - a production system and what's not yet production - my recommendation at this point is to contact F5 Technical Support and open a ticket.&nbsp;

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