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.