Scenario: VIPA – minimize outage due to adapter failure

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7.1 LPAR mode z/VM guest

Using VIPA you can assign IP addresses that are not associated with a particular adapter. VIPA thus minimizes outage that is caused by adapter failure.

VIPA is a facility for assigning an IP address to a system, instead of to individual adapters. It is supported by the Linux® kernel. The addresses can be in IPv4 or IPv6 format.

Standard VIPA, as described in this scenario, is sufficient for applications, such as web servers, that do not open connections to other nodes.

Note:
  1. The VIPA functionality requires a kernel that is built with the CONFIG_DUMMY option.
  2. See the information in Confirming that an IP address has been set under layer 3 concerning possible failure when you set IP addresses for OSA-Express features (qeth device driver).