Hi Faheem,
we have migrated a some NLB cluster to F5, the points below are outlining the migration steps we have used...
- Add additional DIPs to the NLB nodes so that each application on each node can be accessed using DIPs.
- Add network bindings to the application pointing to the new DIPs
- Configure the F5 environment, add interfaces, add IPs, create Virtual Servers (to migrate the VIPs), create pools (for each application), create nodes (for each DIP on each Node), create health-monitors, etc.
- Test the F5 environment using HOST entries pointing to the new F5 Virtual Servers.
- Reroute the NLB VIP traffic to the F5 by either using DNS, certain NATs or step-by-step migration for each single VIP.
- Remove the NLB configuration from the Hosts.
- Done!
Note: Depending on the detailed implemetation of your NLB clusters, and the desired F5 configuration certain additional steps may be required...
Cheers, Kai