This is a text description of Figure 7-18, "Relationship Between IBM Communication Server Definitions and Host VTAM Definitions".

The text surrounding the figure describes the use of this illustration. This figure describes the relationship between IBM Communication Server definitions and host VTAM definitions on the remote host.

The gateway uses the CPI-C interface for SNA communication. CPI-C uses the concept of a Side Information Profile to contain all connection information for a given session. The Side Information Profile is defined on the SNA Server side of the connection and is used directly by the CPI-C interface. The Side Information Profile contains: the Local LU name, the session Mode name, and the remote Transaction Program name. The Remote Host, or VTAM node, contains: the Partner LU definition, the Mode table (which defines the specific Mode name), and the network connection definition. Along with the Partner LU definition are SNA-specific resource definitions that are needed by VTAM to complete the network description. These specific definitions are stored in the VTAM VTAMLST data set. Refer to VTAM-specific documentation for more detailed information.

The figure is a diagram of relationships. Seven groups of rectangles are arranged in two rows of three and one row of one. Consider these seven groups as numbers 1, 2, and 3, from left to right in the upper row, and as numbers 4, 5, and 6, from left to right in the next row, and as number 7 in the bottom row. Group-4 is below group-1. Group-5 is below group-2. Group-7 is below group-6, which is below group-3.

Group-1 has four boxes aligned vertically, which contain the following entries: "Local LU Definition", "Local LU Alias", "Local LU Name", and "...".

Group-2 has six boxes aligned vertically. The top box is separated from those below it by an extra horizontal line. The boxes contain the following entries: "Side Information", "Local LU Alias", "Partner LU Alias", (Between the third box and the fourth box is the word "or".), "Fully-qualified Partner LU Name", "Mode Name", and "Remote TP Name".

Group-3 has three boxes aligned vertically, which contain the following entries: "Mode Definition", "Mode Name", and "...".

Group-4 has three boxes aligned vertically, which contain the following entries: "Connection Definition", "Connection Name", and "...".

Group-5 has five boxes aligned vertically, which contain the following entries: "Partner LU Definition", "Fully-qualified Partner LU Name netname.pluname", "Partner LU Alias", "Connection", and "...".

Group-6 has three boxes aligned vertically, which contain the following entries: "VTAMLST", "APPL Definition pluname APPL... MODETAB=mtname", and "ATCSTR00 NETWORK=netname SSCPNAME=cpname".

Group 7 has two boxes aligned vertically, which contain the following entries: "VTAM Mode Table" and "mtname MODETAB MODEENT LOGMODE=modename".

The figure has nine arrows. Each arrow is connected with tail to one box and head to another box. The arrows are listed below in arbitrary order from top-left to lower-right.

An arrow points from group-2 box "Local LU Alias" to group-1 box "Local LU Alias".

An arrow points from group-2 box "Partner LU Alias" to group-5 box "Partner LU Alias".

An arrow points from group-2 box "Fully-qualified Partner LU Name" to group-5 box "Fully-qualified Partner LU Name netname.pluname".

An arrow points from group-2 box "Mode Name" to group-3 box "Mode Name".

An arrow points from group 3 box "Mode Name" to group 7 box "mtname MODETAB MODEENT LOGMODE=modename".

An arrow points from group 5 box "Connection" to group 4 box "Connection Name".

An arrow points from group 5 box "Fully-qualified Partner LU Name netname.pluname" to group 6 box "APPL Definition pluname APPL... MODETAB=mtname".

An arrow points from group 5 box "Fully-qualified Partner LU Name netname.pluname" to group 6 box "ATCSTR00 NETWORK=netname SSCPNAME=cpname".

An arrow points from group 6 box "APPL Definition pluname APPL... MODETAB=mtname" to group 7 box "mtname MODETAB MODEENT LOGMODE=modename".