IBM z/OS Communications Server key features
z/OS Encryption Readiness Technology (zERT)
Starting from z/OS V2R3, Communications Server provides encryption-readiness technology for z/OS administrators to determine which TCP and Enterprise Extender traffic patterns to and from their z/OS systems meet approved encryption criteria and which do not. In December 2018, IBM zERT Network Analyzer, a new web-based interface, is made available to help you determine which z/OS TCP and Enterprise Extender traffic is or isn’t protected according to specific query criteria.
AT-TLS support for TLS v1.3
z/OS V2R4 Communications Server adds support for TLS Version 1.3 for Application Transparent Transport Layer Security (AT-TLS).
Network support for z/OS Container Extensions
z/OS V2R4 Communications Server has added network support for z/OS Container Extensions which provides native z/OS support for Linux Docker based application workloads.
Shared Memory Communications multiple IP subnet support (SMCv2)
In z/OS V2R5 Communications Server, SMCv2 enables Shared Memory Communications over multiple IP subnets, extending the benefits of SMC to additional Z workloads.
Shared Memory Communications - Direct multiple IP subnet support (SMC-Dv2)
z/OS V2R4 Communications Server, with TCP/IP APAR PH22695 and SNA APAR OA59152, is enhanced to support SMC-Dv2. Unlike the original Shared Memory Communication - Direct Memory Access (SMC-D) protocol, SMC-Dv2 does not require that the communication peers reside within the same IP subnet.
Shared Memory Communication - Remote multiple IP subnet support (SMC-Rv2)
In z/OS V2R5 Communications Server, SMC-Rv2 and IBM z15 with RoCE Express2 will support “routable RoCE” connectivity over multiple IP subnets for communications across IBM Z systems.
Supports OSA-Express7S and IBM 25 GbE RoCE Express2
z/OS V2R4 Communications Server is enhanced to support OSA-Express7S features with 25 GbE bandwidth and IBM 25 GbE RoCE Express2 features.
Network Mgmt. for IBM Cloud Provisioning and Mgmt. for z/OS
IBM Configuration Assistant for z/OS Communications Server plays a key role for the network administrator as part of the IBM Cloud Provisioning and Management for z/OS solution.
New TCP/IP usability enhancements in z/OS V2R5
z/OS V2R5 Communications Server provides the following TCP/IP usability enhancements to enable improved efficiency in system automation, the reduction of unwanted delays in system initialization, and improved certificate-related problem determination for AT-TLS and IPSec.
- Notification of availability of TCP/IP extended services
- AT-TLS and IPSec certificate diagnostics
- IPSec certificate reporting enhancements
Software requirements and specifications can be found in the following link.
Hardware requirements and specifications can be found in the following link.
z/OS Communications Server performance related publications can be found in the following link.