Forum Discussion

Nimbostratus

Jun 06, 2018

Solved

ACE to F5 Migration

Hi All, I am first time migrating ACE load balancer (running Multi-context) to F5 LTM LB. So could you please guide me what Pre-migration, Migration, Post-migration checklist or points need to b...

mjohns2_184959
Jun 21, 2018
We migrated about 450 VIPs from a Cisco ACE to F5 LTM. We used F5 migration tool. If I had to do it again, I would move each VIP one by one. It will take longer, but in the end you'll save yourself a headache.

I'd leave the ACE configuration running;

Configure one of the VIP on the F5 using a different IP;

Ask application owner to edit their host file with the new IP and valid their application;

Once validated complete one of the two options

Change DNS to the new IP (we did a lot of this)
Remove the IP from the ACE and give it to the F5 (I had more control if there was an issue doing this way because I didn't have to rely on our security team to undo the DNS change)

Ask the application owner to validate again.

After a while, I'd move about 5 to 10 application a night. And with the more critical application we'd only do that one, for example exchange.

mjohns2_184959

Cirrus

Jun 21, 2018

We migrated about 450 VIPs from a Cisco ACE to F5 LTM. We used F5 migration tool. If I had to do it again, I would move each VIP one by one. It will take longer, but in the end you'll save yourself a headache.

I'd leave the ACE configuration running;
Configure one of the VIP on the F5 using a different IP;
Ask application owner to edit their host file with the new IP and valid their application;
Once validated complete one of the two options
- Change DNS to the new IP (we did a lot of this)
- Remove the IP from the ACE and give it to the F5 (I had more control if there was an issue doing this way because I didn't have to rely on our security team to undo the DNS change)
Ask the application owner to validate again.