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Precedence of Accounts in Determining Default LUs

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When user and group account memberships overlap, the highest-priority account that contains a default local APPC LU determines that LU for the user, and the highest-priority account that contains a default remote APPC LU determines that LU for the user. Accounts are prioritized as follows:

  1. User accounts (highest priority)

  2. Subdomain groups

  3. Local groups

  4. Well-known groups such as Everyone (lowest priority)

    For example, suppose a user account (a high-priority account) called JOHND contains LOCLU1 as the default local APPC LU, but no default remote APPC LU. At the same time, suppose a local group (a low-priority account) of which JOHND is a member contains LOCLU2 as the default local APPC LU, and REMLU2 as the default remote APPC LU. For JOHND, the high-priority assignment, a default local APPC LU of LOCLU1, will be combined with the only other available assignment, a default remote APPC LU of REMLU2.

To assign or edit CPI-C information

  1. In the Host Integration Server console tree, click CPI-C Symbolic Names.

  2. On the Action menu, point to New, and click CPI-C Symbolic Name.

  3. Fill in the Properties dialog box, and click OK.

  4. On the Action menu, click Save Configuration.

Note

If you are using applications based on Common Programming Interface for Communications (CPI-C), use this procedure to configure the CPI-C symbolic destination name.

To configure the default display verb

  1. In SNA Manager, select the subdomain that you want to configure.

  2. On the Action menu, click Properties.

  3. Click the Display Verb tab.

  4. Select the default connection for the display verb, and click OK.

  5. On the Action menu, click Save Configuration.

Note

When the display verb does not specify a connection, Host Integration Server uses the connection that you specify in this procedure. If you do not specify a default display verbconnection, Host Integration Server randomly selects a connection for the verb to use.

Configuring hot backup involves setting up a system environment in which one resource can automatically fill in if another fails. In such a configuration, resources are interchangeable.

To configure hot backup for 5250 LUs

  1. Configure one connection to the IBM i computer for each computer that runs Host Integration Server and supports the 5250 protocol.

  2. Create a local LU on each server, specifying the following:

    • For LU 6.2 Type, select Independent.

    • For LU Alias, specify the same string on each server.

    • For LU Name, specify a unique string on each server. This is required to avoid device name conflicts across servers.

  3. Create a remote LU on each server and give all the remote LUs the same LU name and alias, (which must match the Control Point Name of the IBM i computer).

    Be sure that the Supports Parallel Sessions box is selected for these LUs.

  4. Make the local and remote LUs available to users and groups, by doing one of the following:

    • For each group or user that uses 5250, select the appropriate default local APPC LU and the appropriate default remote APPC LU.

    • To keep this process simple, use or create a group that includes all 5250 users, and assign the appropriate default LUs to that group.

    • For the 5250 emulator, have users specify the local and remote LUs when configuring a session on the emulator.

Note

To achieve hot backup, Host Integration Server chooses a server to connect with the IBM i computer based on availability. This distributes the load more evenly.

Note

To configure hot backup for 5250 users, you must configure multiple servers and pairs of LUs that can all handle sessions to the intended IBM i computer.

Note

For better protection against failure, use multiple servers, and not multiple connections on the same server.

To configure a server with multiple connections to the same IBM i computer

  1. In the Host Integration Server console tree, double-click Connections.

  2. Click the first connection that you want to configure.

  3. On the Action menu, click Properties.

  4. Click the System Identification tab, and fill in the properties for the local and remote node.

  5. Click OK to exit the dialog box.

  6. Repeat steps 2 through 5 for each connection to the same IBM i computer.

  7. On the Action menu, click Save Configuration.

  8. After you configure a connection, you must stop and restart the server.

Important

Each connection to the same IBM i computer must use a separate link service.

Note

This procedure makes the fully qualified network name unique for each connection.

Note

The settings that you specify in this procedure override the fully qualified network name configured in the properties for the server.

To configure a connection for dynamic definition of remote APPC LUs

  1. Select the connection that you want to configure.

  2. On the Action menu, click Properties.

  3. On the General tab in the Properties dialog box, select Supports Dynamic Remote APPC LU Definition, and click OK.

  4. On the Action menu, click Save Configuration.

See Also

How to Configure APPC LUs for TPs or 5250 Emulation
Creating and Configuring LUs