Steps for modifying LINK statements

This topic describe the steps for modifying the LINK statement.

Procedure

Perform the following steps to modify all other parameters on a LINK statement or to modify any DEVICE statement parameters:

  1. Stop the device.

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  2. Use a VARY TCPIP,,OBEYFILE command with a data set that contains:
    • A new HOME statement that does not contain the home IP address or addresses of the LINK or LINKs involved in the DELETE
    • DELETE linkname and DELETE devicename statements

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  3. Use a VARY TCPIP,,OBEYFILE command with a data set that contains:
    • The changed DEVICE and LINK statements
    • A new HOME statement that includes the home IP address or addresses of the LINK or LINKs being added

    The data set used on the VARY TCPIP,,OBEYFILE command in this step should be different from the data set used in step . Do not put the DELETE and redefinition of an interface in the same OBEYFILE data set.

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  4. Start the device.

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Results

Guideline: To change parameters on a LINK statement only, you do not need to delete the DEVICE name statement and later redefine the DEVICE name statement.

To dynamically change a value on a LINK statement only, do not perform the DELETE devicename and redefine DEVICE steps in Steps for modifying LINK statements.

For more information about the VARY TCPIP commands, see z/OS Communications Server: IP System Administrator's Commands.

You can add new DEVICE and LINK statements using the VARY TCPIP command. You can also delete and redefine existing statements.

When you add new LINK statements, any corresponding BEGINROUTES, GATEWAY, HOME, and TRANSLATE statements coded to include the new links are treated as replacements for active statements. Therefore, when you code the BEGINROUTES, GATEWAY, HOME, or TRANSLATE statements of the data set specified on a VARY TCPIP,,OBEYFILE command, be sure to include new and existing links that you want to have active in your configuration.