Overview of SNA configuration definitions

To configure an SNA connection, you need to make entries on VTAM®, CICS®, Communications Server, and the CICS Universal Client. Table 1 shows the entries that you need to make.

Table 1. Matching definitions for SNA
VTAM CICS Transaction Server IBM® Communications Server ctg.ini Example
NETID First part of fully qualified LU name in Partner LU ABC3XYZ4
PU Control Point alias in Node Definition IYAMR021
LU Netname LU Name/LU alias in independent LU Type 6.2 Local LU name IYAMT210
XID Last five digits of Node identifier in Node Definition 05d316fc
Token Ring destination address Adjacent node MAC address in Link Station 400045121088
Ethernet port address MAC address   020070000428
Enterprise Extender IP address Communication end point   192.113.36.200
APPL APPLID Second part of fully qualified LU name in Partner LU IYCQST34
LogMode Modename Name in Mode Mode name LU62PS
Partner LU name IYCQST34
Note:
  1. The NETID is the VTAM network name. It is defined for your VTAM network in the VTAM start options.
  2. The PU is the name of the Communications Server physical unit (PU). It is named in the VTAM switched major node.
  3. The LU is the independent LU6.2 used by the CICS Universal Client. It must also be defined to VTAM in a switched Major Node.
  4. The XID (or node ID) is configured in the VTAM switched major node using IDBLK and IDNUM. It is used in the XID exchange to activate the link station.
  5. For IBM Communications Server, Token Ring, Ethernet and Enterprise Extender are all valid communication link station types. Choose one or more as required. For more details about link station configuration refer to the Communications Server Task Guides.
  6. The APPL is is the CICS APPLID and also the VTAM APPL. It is defined in the VTAM application major node used by the CICS region.
  7. The LogMode is the mode group used to control LU6.2 session properties. It must be defined in a VTAM logon mode table, which must be named on the VTAM APPL definition.
  8. The Host system control point name is the CP for the PU of the VTAM front end processor.

More information on connecting the CICS Transaction Gateway to CICS Transaction Server for z/OS® is in CICS Transaction Gateway V5 - The WebSphere® Connector for CICS, SG24-6133. The information in the book is relevant to connections from the CICS Universal Client over SNA.