ADNR connection to the GWM terminates unexpectedly

Determine whether the GWN is available, that TCP/IP connectivity still exists between ADNR and the GWM, and check for error and warning messages.

Check the following:

• Verify that the load balancing administrator has not shut down the GWM advising ADNR.
• Verify that TCP/IP connectivity still exists between ADNR and the GWM (for example, from the ADNR host, ping the address of the GWM). See Monitoring the TCP/IP network, Ping subsection, in z/OS Communications Server: IP System Administrator's Commands, for further information about ping.
• Check ADNR's log file for ERROR or WARNING messages and take the appropriate corrective action. If ERROR and WARNING debug level log messages are not enabled, then enable them, repeat the operation, and recheck to log file again. See Modify command -- Automated Domain Name Registration in z/OS Communications Server: IP System Administrator's Commands, for further information about enabling ADNR's debug levels.
• Check the GWM for errors.