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 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 more information. They can 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 the Virtual IP addresses.

CA XCOM Data Transport accepts or rejects the 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 can accept the connection requests only for this IP address. This can be subject to the TCP/IP configuration and what connections the TCP/IP stack permits.

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 can accept the connection requests only for this TCP/IPv6 address. This can be subject to the TCP/IP configuration and what connections the TCP/IP stack permits.

SERVPORTV6

Specifies the TCP/IPv6 port that XCOM listens on.

SSLPORTV6

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

TCPIPV6

Specifies whether the CA XCOM Data Transport server uses TCP/IPv6.

TCPSTACK

Specifies the job name or started task of the TCP/IP stack the XCOM Data Transport TCP/IP interface uses. The TCP/IP stack that is specified is used for both initiating and receiving transfers.

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