Configuring Systems for Terminals, Printers, and Other Serial Devices (32022-90057)

Dynamic Configuration and DTS Shutdown/Restart
Dynamic Configuration
Chapter 4
54
Dynamic Configuration
Dynamic configuration enables you to apply a select set of DTS configuration changes
made in NMMGR without rebooting the system. Such configuration changes include
adding or deleting terminals, printers and DTCs, changing most configuration
parameters of terminals, printers and DTCs. See Table 4-1 for a complete list of
configuration changes that can be modified dynamically (this includes changes that
require additional actions, such as rebooting the DTC, before changes take effect).
All operations that delete ldevs are non-destructive. This means that if an ldev to be
deleted is in use, then the delete is not performed. You must take the appropriate action
to free the device. For example, you must stop the spooler on a spooled serial printer or
log off the session on a terminal ldev. If multiple ldevs are deleted, then only free ldevs
are deleted. Those ldevs that were not free will be processed again the next time
DTCCNTRL is invoked.
Most changes will not affect current active sessions or users. Only those changes that
require a reset of the DTC or DTC card will affect active sessions or users. A DTC reset is
only required when the change is to a DTC characteristic, such as, adding a card or
changing a DTC CPU parameter, such as, the DTC IP address or SNMP data. Users on
other DTCs are not affected.
Some changes will require additional steps to complete once DTCCNTRL has made the
desired changes. These possible additional steps are: logoff any sessions or close any jobs
that access the changed devices, stop and restart the spooler if the device is a printer,
stop and the start X.25/PADSUP, reboot or reset the DTC. DTCCNTRL will display a
message when these steps are necessary and tell you which DTCs are affected.