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Establishing CICSplex connectivity

This example uses the Web User Interface (WUI) to create the pairs of connection and session definitions that are required to connect the CICS® systems in the Starter Set CICSplex, EYUPLX01.

  1. Create the first ISC connection definition.
    1. From the WUI main menu, clickAdministration views-->Basic CICS resource administration views-->CICS resource definitions-->Connection definitions 5 to open the Connection definition tabular view.
    2. If the current context is not EYUPLX01, specify EYUPLX01 in the Context field and click Refresh.
    3. Click Create and complete the Create panel as follows:
      Connection definition name
      C001
      Description
      ISC Connection
      Access method
      Vtam
      Protocol
      Appc
      Nature of connection
      Notapplic
      APPC terminal on single session APPC link
      No
      Data stream type
      User
      Record format
      U
      Queue limit
      No
      Maximum queue time
      No
      Autoconnect sessions for VTAM
      Yes
      Connection status
      Yes
      Level of attach-time security
      Local
      Bind time security
      No
      Use default user ID
      N_a
      Persistent session recovery
      Sysdefault
      Exchange lognames (XLN) action
      Keep
      Other fields can remain blank.
    4. Click Yes to confirm the operation. The new ISC connection is created and the Connection definition tabular view is redisplayed.
  2. Create the associated session definition.
    1. From the WUI main menu, click Administration views-->CICS resource definition views-->Session definitions to open the Session definition tabular view.
    2. Click the Create button and complete the Create panel as follows:
      Session definition name
      S001
      Definition version
      0
      Definition description
      ISC session
      Connection definition name
      C001
      Intercommunication link protocol
      Appc
      Maximum number of sessions in the group
      4
      Receive buffer size
      4096
      Session priority
      0
      Autoconnect option
      YES
      Session inservice
      N_a
      Chain assembly required
      Yes
      Honor release requests
      No
      Honor disconnect requests
      No
      Recovery option
      Sysdefault
      XRF recovery notification option
      N_a
      Other fields can remain blank.
    3. Click Yes to confirm. The ISC session definition is created and the Session definition tabular view is redisplayed.
  3. Define the link between the relevant CICS systems.
    1. From the WUI main menu, click Administration views-->Main administration views-->CICS system links to open the System link definition tabular view.
    2. Click the Create button and complete the Create panel as follows:
      Primary CICS system name
      EYUMAS1A
      Secondary CICS system name
      EYUMAS1B
      Connection definition name
      C001
      Connection definition version
      1
      Session definition name
      S001
      Session definition version
      1
    3. Click Yes to confirm creation of the link. The ISC link between EYUMAS1A and EYUMAS1B is created and the System link definition view is redisplayed.
  4. Reuse the existing ISC link definition to define the links between other CICS systems.
    1. In the System link definition view, select the entry for EYUMAS1A and click Create.

      The Create System Link panel is displayed, showing the values you entered when creating the link between EYUMAS1A and EYUMAS1B.

    2. Update the Primary CICS system name field to create an ISC link between EYUMAS4A and EYUMAS1B.
    3. Click Yes to confirm. The ISC link between EYUMAS4A and EYUMAS1B is created and the System link definition view is redisplayed.
    Repeat this step to create ISC links between other CICS systems in the CICSplex.

Related tasks
Defining resources for an application
Installing CICS resources dynamically
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5.
You can also access this view from the Fully functional Business Application Services (BAS) administration views menu.

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