About changes in default values during a major version upgrade.
Our BIG-IP is currently on v12, and we are planning to replace it with v17.1, with the intention of retaining all configurations. However, due to this major version upgrade, we anticipate that there may be changes in default values. Is there any document available that summarizes the differences for us to review?
Generally defaults do not change. Many times new profiles are introduced howerver to serve as workarounds. Ciphers may change. iRules may need to be updated. SSL ciphers change. Also, that big of a version jump will require a staged upgrade. Please see the following:
Generally for this type of work, professional services are recommended. You can also lab test quite a bit using a VE license. You can upload QKView to iHealth for some guidance. If you have an HA setup, complete all work on the standby, failover, and test. Any issues, fail back and tshoot.
Remeber to have active support contract, make sure your hardware supports the latest code, etc.