You can use the IPsec protocol to secure EtherIP tunnel traffic that is undergoing live migration across a wide area network (WAN) using VMware vMotion. The EtherIP tunnel preserves any existing connections between the BIG-IP system and a virtual machine while the virtual machine migrates to another data center. Adding IPsec to this configuration involves adding an IPsec traffic selector on each side of the IPsec tunnel. Those traffic selectors have the same source and destination IP addresses as the EtherIP tunnel.
VLANs represent a logical collection of hosts that can share network resources, regardless of their physical location on the network. You create a VLAN to associate physical interfaces with that VLAN.
A self IP address enables the BIG-IP system and other devices on the network to route application traffic through the associated VLAN or VLAN group.
After you configure EtherIP tunneling on the BIG-IP system, you must perform the same configuration procedure on the BIG-IP system in the remote data center to fully establish the EtherIP tunnel.
After the tunnel is established, the BIG-IP system preserves any open connections to migrating (or migrated) virtual machine servers.