Configuring and Customizing Your Product › Configure Virtual IP Addresses—Remotely-Initiated Transfers Only (Optional)

Configure Virtual IP Addresses—Remotely-Initiated Transfers Only (Optional)

CA XCOM Data Transport for z/OS can utilize Virtual IP Addressing with multiple CA XCOM Data Transport servers sharing a virtual IP address. CA XCOM Data Transport does not share the PORT, so each server must be on a different stack, or you must configure your TCP/IP stack to share a port. For the CA TCPaccess CS stack, specify ACCESS(SHR) for the PORTRULE definition or for the IBM stack, specify SHAREPORT in your TCP/IP profile. To use this support, your system must be configured for Virtual IP addresses. Consult your network support group for additional information. They will provide the virtual IP address and port.

TCP/IP distributes scheduled CA XCOM Data Transport transfers to the different CA XCOM Data Transport servers. The IBM Coupling Facility is required for this feature. This does not require the XCOMPLEX unless checkpointing is in use. The XCOMPLEX is required to be able to restart a transfer from a checkpoint when using Virtual IP addresses.

CA XCOM Data Transport accepts or rejects connection requests based on the configuration of TCP/IP and the Default Option Table parameters SERVADDR, SERVPORT, SSLPORT, SERVADDRV6, SERVPORTV6, SSLPORTV6, TCPIPV6, and TCPSTACK:

SERVADDR

This parameter can be used to define an incoming IP address. If specified, XCOM will accept connection requests only for this IP address. This may be subject to the TCP/IP configuration and what connections are permitted by the TCP/IP stack.

SERVPORT

Specifies the TCP/IP port that XCOM listens on.

SSLPORT

Specifies the SSL port that XCOM listens on.

SERVADDRV6

This parameter can be used to define an incoming TCP/IPv6 address. If specified, XCOM will accept connection requests only for this TCP/IPv6 address. This may be subject to the TCP/IP configuration and what connections are permitted by the TCP/IP stack.

SERVPORTV6

Specifies the TCP/IPv6 port that XCOM listens on.

SSLPORTV6

Specifies the TCP/IPv6 SSL port that XCOM listens on.

TCPIPV6

Specifies whether TCP/IPv6 is to be used by the CA XCOM Data Transport server.

TCPSTACK

Specifies whether XCOM TCP/IPv6 listener subtasks will be started in order to handle incoming TCP/IP connections.

For more information about these parameters, see their descriptions in Default Options Table Parameters in the chapter "Configuration Parameters."