Starting and restarting networking devices automatically

The START parameter allows you to automatically start networking devices during JES2 initialization. Specifying the START=YES|NO parameter on the LINE, LOGON, and NETSERV initialization statements indicates whether (YES) or not (NO) these networking devices will be started when JES2 starts processing. The default value is NO.

The RESTART parameter allows you to automatically start networking devices after JES2 initialization, and to restart them if they become drained. Specifying the RESTART=(YES|NO,interval) parameter on the LINE, LOGON, and NETSERV initialization statements indicates whether (YES) or not (NO) these networking devices will be started by the network resource monitor, and restarted if they become drained for longer than the specified time interval. The default value is NO. The RESTART=(YES | NO,interval) parameter can also be specified with the JES2 $ADD, $P, and $T commands to set or modify this networking device attribute. Specifying RESTART=(YES) overrides a specification of START=(NO).

The RESTART parameter interval value is the approximate time, in minutes, between attempts to restart a networking device. The valid range for the interval value is 0-1440 minutes. A value of 0 (default) indicates that the interval value from the NJEDEF CONNECT parameter is used. The valid range for the NJEDEF CONNECT parameter interval value is 1-1440 minutes, and the default value is 10 minutes.

When JES2 attempts to automatically start or restart a networking device, JES2 issues a $HASP568 message similar to the following example:

$HASP568 LNEn - AUTOMATIC RESTART

When an automatic attempt to start or to restart a networking device fails, JES2 issues a $HASP569 message similar to the following example:

$HASP569 LNEn - LINE COULD NOT BE ALLOCATED, RC=07 
                NEXT ATTEMPT: 13 APR 2011 AT 10:16

If RESTART=YES has been specified for a networking device that is currently drained, the $D command displays the projected restart time, in the following format:

RESTART=(YES,0,2011.103,10:16)

For more information on using each initialization statement, refer to z/OS JES2 Initialization and Tuning Reference. For more information on using each command, refer to z/OS JES2 Commands.