A VIPA is a generic term that refers to an internet address
on a z/OS® host that is not
associated with a physical adapter. There are two types of VIPAs:
A Static VIPA cannot be changed except through a
VARY TCPIP,,OBEYFILE operator command.
A dynamic VIPA (DVIPA) can move
to other TCP/IP stack members in a sysplex or it can be activated
by an application program or by a supplied utility. Dynamic VIPAs
are used to implement sysplex distributor as described in Considerations for VIPA.
Distributed DVIPA
A distributed
DVIPA, which is a special type of DVIPA, can distribute connections
within a sysplex.
Dynamic routing
VIPAs are designed to interoperate with a dynamic routing
daemon. Therefore, it is highly recommended that a routing daemon
be used on a z/OS host that
uses VIPAs.