Configuring Systems for Terminals, Printers, and Other Serial Devices (32022-90051)

56 Chapter4
Dynamic Configuration and DTS Shutdown/Restart
Dynamic Configuration
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.