Application modernization

The following topics describe enhancements for application modernization:

Multiple VIPA ranges for z/OS Container Platform
Sysplex Distributor support for IBM z/OS Control Plane Appliances
Network support for IBM z/OS Container Platform
Communications Server Support for 64-bit Java
ReplaceSubjectAtSign configuration option for CSSMTP

Multiple VIPA ranges for z/OS Container Platform
z/OS 3.1 Communications Server, with APAR PH63940, is enhanced to enable the configuration and use of multiple VIPARANGE ZCONTAINER statements for use by containers started with IBM z/OS Container Platform (zOSCP). Previously, the TCP/IP stack could only dynamically request Dynamic Virtual IP Addresses (DVIPAs) from a single configured range of addresses per stack. This new feature expands this functionality to allow users to configure more than one of these ranges for address creation in the TCP/IP profile. This alleviates the restriction where users would need to ensure they had enough available contiguous addresses.
Sysplex Distributor support for IBM z/OS Control Plane Appliances
With z/OS 3.1, z/OS Communications Server is enhanced with APAR PH49323 to support z/OS Sysplex Distributor for non-z/OS targets that run co-located with a z/OS TCP/IP stack in a sysplex.
Network support for IBM z/OS Container Platform
z/OS 3.1 Communications Server has added network support for IBM z/OS Container Platform.
Communications Server Support for 64-bit Java
z/OS 3.1 Communications Server enhances the FTP client API for Java support to 64-bit Java environments.
ReplaceSubjectAtSign configuration option for CSSMTP
z/OS 3.1 with TCP/IP APAR PH56747 enables customization of the Communications Server SMTP (CSSMTP) processing of the at sign (@) symbol in the mail message subject line.

Parent topic: 3.1 new function summary