i am very new to f5 , we have ltm VE , with internal and external vlans , we have internal servers in rang 10.110.142.0/24 ,
now we added 2 servers in rang 10.110.152.0/24 , do i need to add one interface and creat self ip for new servers , or jusy use one self ip for both ,
Solved! Go to Solution.
@tmsah ,from your question, I think you implemented your LTM as a two-arm design,
For the answer, you have the back-end servers in different subnets, you will not need to create another interface for the new two servers, we just need to enable auto map on your new virtual server that will take an IP from the external VLAN range and attach the pool contain the two new servers , so now you use your LTM as one arm and it is applicable to add any servers from any subnets
Depending of your network architecture:
1. If your servers are meant to be reachable through a level-3 equipment (a firewall typically) then you don't need to create IPs on the servers subnet as they are not meant to be directly connected. You need instead to have a nework route to reach your servers.
2. If your servers are meant to be directly connected to F5 e.g. no routing involved, then you need to have L2 and L3 connectivity between F5 and your servers. This is a simple process :
Alternatively, you can choose to leverage VLAN tagging and use same interface for both VLANs, this is possible too.
You can also choose to not use any of these methods and just create the self IP if your two subnets belong to the same VLAN, but this is quite a rare condition in production environment