z/OS Communications Server: IP Configuration Guide contains a complete description and detailed examples of DVIPA configuration.

Dvipa (Sanskrit: द्वीप, lit. 'island', IAST : Dvīpa ) [ 1 ] is a term in Hindu cosmography. The Puranas describe a dvipa to be one of the seven islands [ 2 ] or continents that are present on earth, each of them surrounded by an ocean. [ 3 ]

DVIPAs allow servers to be made available independently of hardware or software failures. This can be done dynamically by TCP/IP or even by a system automation product. Single image. DVIPA allows multiple LPARs to appear to be a single, highly available network host.

Dynamic VIPAs (DVIPAs) can be used to distribute connections in a sysplex. This is referred to as a distributed DVIPA. All three VIPAs can coexist on a given stack, but there are differences in how these VIPAs are configured and used.

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We show how to use the functions of DB2 sysplex workload balancing functions, supported by DB2 ConnectTM Server and the IBM DB2 Driver for JDBCTM and SQLJ, in conjunction with the functions of TCP/IP Sysplex Distributor, configured with Dynamic Virtual IP address (Dynamic VIPA or DVIPA) and automatic VIPA takeover, to provide superior load distr...

A stack-managed DVIPA is one in which the activation of the DVIPA and movement of the DVIPA is controlled by the TCP/IP stacks. A VIPADEFINE statement is configured on the stack that will own the DVIPA. As the stack is started, the DVIPA is activated and advertised by the owning stack. The slide contains an example of this configuration.

You can distribute connections destined for a dynamic VIPA (DVIPA) by adding a VIPADISTRIBUTE configuration statement for a previously defined dynamic VIPA. The order of the statements is important. The VIPA is first defined with the VIPADEFINE statement and then included on a VIPADISTRIBUTE statement.

VIPA, DVIPA, and Sysplex Distributor may be part of a high availability design. This topic covers the evolution from Virtual IP Address (VIPA) to Dynamic VIPA to Sysplex Distributor. Configuration...

Using real-world scenarios, we will then explore how Netview for z/OS, using its DVIPA management capabilities, can help users quickly discover and diagnose problems in this environment.