Release Notes for Advantage CA-XCOM Data - SupportConnect

checkpointing is in use. The XCOMPLEX is required to restart a transfer from acheckpoint when using VTAM GNAME services. This feature is optional.Related new Default Options Table Parameter:VTAMGNAM- Specifies the VTAM Generic Resource Name that the server attempts to open atinitialization time.Feature #4 Unicenter Network and Systems Management NetMasterInterfaceAdvantage CA-XCOM Data Transport for z/OS and OS/390 version 3.1 providesan interface with Unicenter Netmaster File Transfer management, version 5.0and higher.With this interface enabled, Unicenter Netmaster provides the following classesof resources to monitor and manage the application and transfers:• XCMGR-class managers to monitor and manage CA-XCOM for MVS filetransfer applications• XCMON-class monitors to monitor and manage CA-XCOM file transfers,consisting of the following:- Remote node monitor- Stalled transfer monitor- TCP/IP connections monitor- TCP/IP listener task monitor- Transfer request monitorsRelated new Default Options Table Parameters:NETMAST -RECVRID –Specifies whether Unicenter NetMaster support is enabled.Specifies the receiver ID for Unicenter NetMaster File TransferManagement.Feature #5 Add Support for LSR for the XCOMRRDS Data SetEach Advantage CA-XCOM Data Transport server for z/OS and OS/390 uses aVSAM data set to keep track of the current transfer id number (TID) as well as allthe transfers in the queue. Each transfer must be updated at each state change(started, each checkpoint, etc). In case of a transfer failure, the RRDS record isused to determine the last checkpoint and restart accordingly.IBM's Local Shared Resources (LSR) facility allows the sharing of commoncontrol blocks such as I/O control blocks, buffers, and channel programs.Advantage CA-XCOM Data Transport for z/OS and OS/390 version 3.1 supportsthe use of LSR for the XCOMRRDS. Using this facility for the XCOMRRDS willincrease performance when queuing and processing transfer requests. To usethe IBM LSR facility, the BLSR region has to be started and the XCOM serverJCL must be modified to include this support. This feature is optional.

Feature #6 Reduce the Number of NSA Control Blocks in UseWhen a transfer comes in for an SNA LU with parallel session support, XCOMmust obtain a control block (NSA) for each actual transfer session, plus one forthe SNA Service Manager, SNASVCMG. If there are 200 remote SNA partnerswith parallel sessions, there are 200 NSA’s for SNASVCMG sessions, which areused for establishing the parallel session, after which they are no longer used.With Advantage CA-XCOM Data Transport for z/OS and OS/390 version 3.1,these control blocks for SNASVCMG sessions are now freed and made availablefor reuse with DROPSESS=ALL.Related revised Default Options Table and Destination Parameter:DROPSESSIndicates whether Advantage CA -XCOM Data Transport drops an LU-LU sessionat the conclusion of a scheduled file transfer. DROPSESS has been enhancedwith an additional parameter value. Now, when used in the default options tableor in a destination member only, DROPSESS=ALL may be specified.ALL Indicates that Advantage CA-XCOM Data Transport drops all sessions,including SNASVCMG, at the conclusion of a scheduled file transfer, if alltransfers for the particular LU in the request queue have finished.DROPSESS=ALL should only be used for infrequently used SNA partners toavoid potential problems with SNASVCMG sessions being dropped and possiblyestablished simultaneously with heavy volume of transfers. DROPSESS=ALL issimilar in function to DROPSESS=QEMPTY but drops the SNASVCMG sessionas well.Feature #7 Open Edition Extended SocketsAdvantage CA-XCOM Data Transport now uses Open Edition Extended socketsfor enhanced performance. The compression routines and TCP/IP interface(TXPI) have been converted from SAS/C to IBM/C.Related new Default Options Table Parameters:TCPSTACK- This parameter specifies the job name or started task name of the TCP/IP stackthat will be used by the Advantage CA-XCOM Data Transport TCP/IP interface.TCPSRCVB-TCP/IP Socket option SO_RCVBUF. This parameter specifies the buffer size forreceives.TCPSSNDB- TCP/IP Socket option SO_SNDBUF. This parameter specifies the buffer size forsends.Feature #8 New TCP/IP Tuning ParametersThe following new Default Options Table TCP/IP tuning parameters have beenadded to this version of Advantage CA-XCOM Data Transport:TCPSOCKD- The TCP/IP Socket option TCP_NODELAY. This refers to the

Nagle algorithm for send coalescing. By default, small sends maybe delayed.TCPTBUF- This parameter specifies the internal buffer size for sends andreceives.TCPTCHKF- Indicates the frequency with which Advantage CA-XCOM DataTransport checks to see if incoming error information is availablewhen sending data.TCPTTIME- Maximum time to wait, in seconds, for a partner to terminateTCP/IP communications.Feature #8 New Manual FormatThe CA-XCOM for MVS Installation and Configuration Guide has been replacedby two manuals:1. Advantage CA-XCOM Data Transport for z/OS and OS/390 GettingStarted - This streamlined manual has an installation overview andinstallation steps to provide a quick and easy reference for those familiarwith the product.2. Advantage CA-XCOM Data Transport for z/OS and OS/390 AdministratorGuide - This manual includes information in depth about installation andconfiguration and serves as a reference manual.Other manuals remain the same. Manuals for Advantage CA-XCOM DataTransport for z/OS and OS/390 are now supplied only in PDF format.

2 Enhancements & Changes toExisting FeaturesThe following modifications have been made to previously existing featuresof Advantage CA-XCOM Data Transport for z/OS and OS/390 for Release 3.1.1. Coax SupportAdvantage CA-XCOM Data Transport for z/OS and OS/390 no longersupports COAX.2. Distribulink SupportWith version 3.1, Advantage CA-XCOM Data Transport for z/OS andOS/390 no longer supports CA-Distribulink for MVS.3. CA-ACTIVATOR InstallationWith version 3.1, Advantage CA-XCOM Data Transport for z/OS andOS/390 no longer supports installation with CA-ACTIVATOR.