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Communications Server for Data Center Deployment v7.1 release expands implementation options for the newer cloud based data centers

  
On January 28, 2021 the latest Communications Server for Data Center Deployment (CSDCD) v7.1 released. This offering expands the possible platforms to run a Communications Server in by adding support for Ubuntu LTS Linux and the Power Systems (ppcle64) platform. For operating systems, the CSDCD already supports RHEL and SLES releases. The Ubuntu LTS support expands the options to include Debian based systems. For platform support, the CSDCD already provided AIX on Power (ppc), Intel/ARM 64-bit (x86_64) and the IBM Z (s390x) support. This release adds the Power Linux (ppc64le) support for systems that might run Watson and other high end Power systems. These additional operating systems and platforms provide more coverage for implementations where z/OS, VM/VSE and VM/VTAM need to be accessed.

The CSDCD is a multi-functional communications product that provides System Networking Architecture (SNA) application access to the mainframe. The ability to concentrate network connections and application resources into a more central data center location is a major benefit of using a Communications Server. It also can provide front end access to the mainframe, offloading encryption and other network resources so that the MIPs on the z/OS or VTAM can be used for application data usage.

Communications Server provides a more centric SNA network to manage

      There are seven major functions the Communications Server can perform for SNA applications like CICS, IMS and home grown transactional programs:

  1. TN3270 Server and TN Redirector, providing front end access to VTAM
  2. APPN Network Node for routing SNA (over network protocols like LLC2, 802.3, Enterprise Extender) 
  3. Enterprise Extender gateway providing LLC2 or 802.3 Ethernet connections to z/OS or VTAM using Enterprise Extender (APPN/HPR over IP)
  4. Application server for SNA (CICS, IMS, LU6.2, Dependent LU)
  5. Cloud based access using a domain of servers to support Remote API clients for Windows, Linux and AIX SNA applications
         Support for containers using Remote API clients to provide SNA interfaces for applications
         Provides high availability and redundancy through dynamic connections into domain of servers supporting SNA resources
  6. DLUR gateway and Branch Extender capability that replaces DLSw functions provided by Cisco routers
  7. SNA Gateway concentration for connecting many downstream SNA workstations/devices into fewer upstream connections
   When considering modernizing your network, the CSDCD provides several methods in implementing SNA over IP connectivity, using cloud like implementations in a manner that does not touch the end point applications. The goal for using CSDCD is to enhance the network to support the latest communications needs and trends without changing the mainframe or desktop applications.

Jeff L Smith