Forum Discussion
Hi there,
if the new F5 self-ip's are different but you're planning to keep the same IP's for the virtual servers (and I assume, the pool members) you can copy the current virtual servers and pools from the bigip.conf file of one of the old devices and save it in a text file (my_old_config.txt).
Upload that .txt to the new F5's (config folder) after configuring the Self-IP's and then you can run:
tmsh load sys config file my_old_config.txt merge verify
The "verify" bit is key as it will just run this a test and will flag to you should there be any issue or inconsistency when combining the old config into the new device. it will flag if the old vips refer to any profiles or vlans that doesn't exist on the new devices.
I think that for most profiles but the SSL ones, you can copy them also from the old bigip.conf (I'm sure that if there's a better way for that, someone will add to this answer). For SSL profiles, if any, you may want to ensure that the cert/keys are exported from the old devices.
Once that command is happy (no errors), you can run it again without the "verify", in which case it will effectively merge the old config into the new bigip.conf file.
tmsh load sys config file my_old_config.txt merge