What are the different distribution methods available to the distributing TCPIP stack?

There are several different distribution methods available to the distributing stack:

BASEWLM - Incoming connection requests are distributed according to relative WLM system weight preferences as modified by the Target Server Responsiveness (TSR) value, and possibly as modified by Service Policy Agent policies. This method is not available if you specify GRE (generic routing encapsulation (GRE) is used when distributing requests to the Tier 1 targets) or ENCAP (routing encapsulation is used when distributing requests to Tier 1 targets). on the VIPADISTRIBUTE DEFINE statement.

ROUNDROBIN - Incoming TCP connection requests are distributed in a round-robin fashion across the available TCP/IP stacks that are targets for each DVIPA/port combination and have at least one application server instance listening on the specified ports.

SERVERWLM - If WLM server values can be collected for each target server, these values are used to distribute connections for this group of DVIPA ports [as modified by the Target Server Responsiveness (TSR) value, and possibly as modified by Service Policy Agent policies]. This method is not available if you specify GRE or ENCAP on the VIPADISTRIBUTE DEFINE statement.

TARGCONTROLLED - incoming connection requests are distributed using weights provided by the Tier 1 targets. You can specify TARGCONTROLLED only when you specify GRE or ENCAP. You can specify TARGCONTROLLED only when you are distributing connections to DataPower appliances.

WEIGHTEDACTIVE - distribution of incoming TCP connection requests is balanced across the targets such that the number of active connections on each target is proportionally equivalent to a configured active connection weight for each target.

HOTSTANDBY - Specifies that there is at least one backup (hot-standby) target and a preferred target stack. The target to which connections are distributed is referred to as the active target. If the active target becomes unavailable, the hot-standby target becomes the new active target, and the unavailable target becomes a hot-standby target.