Upgrades ( 11.3.x to 12.1.x)

I suggest you to follow this order:

 

1 - Software version

 

Choose the correct version using this solution:

 

https://support.f5.com/csp/article/K5903

 

2 - Release notes

 

Read the release notes for that version.

 

Here is the release notes for 12.1.2, as example:

 

https://support.f5.com/kb/en-us/products/big-ip_ltm/releasenotes/product/relnote-ltm-12-1-2.html

 

3 - iHeath

 

Generate a qkview, and upload to iHealth. Use the Upgrade Advisor option there. It will probably tell you that HTTP classes were replaced with LTM policies in the target version.

 

4 - Virtual Edition

 

Generate a UCS and load in a VE with the current version. You will need to fix some configuration to make it load, I suggest you to use the platform-migrate option to load the ucs.

 

https://support.f5.com/csp/article/K82540512

 

Concluding, is a considerable jump between 11.3.0 to 12.1.X.

 

Also, there is no version 11.3.2, just 11.3.0.

 

be sure you active licenses before do upgrade check version and do reactive which compatible with new version

 

if you have any question ask please we will help you

 

Good Luck