Network interfaces

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If your site runs more than one TCP/IP interface or network adapter on the same z/OS® image, you can specify network interfaces to be used by monitoring servers and monitoring agents on a z/OS system. You specify the network interfaces in the IP communication protocol parameters for each component.

Before you begin configuring the monitoring server, decide whether you require a network interface list and, if so, which of the following values to specify for it:

  • The host name or IP address of the preferred interface.
  • A list of host names or IP addresses, in descending order of preference. Use a blank space to separate the entries.
  • An asterisk (*) to prefer the interface associated with the default host name for the z/OS image. To display this value, enter TSO HOMETEST at the command-line.
  • An exclamation point followed by an asterisk (!*) to use only the interface associated with the default host name for the z/OS image.
  • An exclamation point followed by a host name or IP address (!hostname) to use only the interface associated with hostname.
  • A minus sign followed by a host name or IP address (-hostname) to use any interface except the one associated with hostname.

If you provide a value for the KDS_TEMS_TCP_KDEB_INTERFACELIST parameter in the PARMGEN configuration profile, the KDEB_INTERFACELIST environment variable is added to the KDSENV member of the rhilev.rte.RKANPARU library.

Important:
  • If you set the value of this parameter to !* or !hostname, you must specify the same value for every component and product configured in all runtime environments on the same z/OS image.
  • In the default character set (language locale en_US.ibm-037), the code for an exclamation point is x'5A'. If you are using a character set other than the default, a different character might map to that code. To require a specific network interface, use the character that maps to x'5A' in your character set.

See Configuring a high-availability hub for special considerations in specifying the KDEB_INTERFACELIST environment variable for a high-availability hub.