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Dynamic Configuration uses both files NMCONFIG.PUB.SYS and
NMCONFIX.PUB.SYS to manage the devices created by the DTS subsystem.
When users wish to make any dynamic change, NMMGR will be used to modify the
configuration in NMCONFIG.PUB.SYS. When DTCCNTRL is invoked,
either within or from outside of NMMGR, NMCONFIG will be compared to NMCONFIX
and the desired changes will be made to the system configuration. When the
operation has completed successfully, the changes will be written to NMCONFIX.
The configuration in NMCONFIX will always match the actual configuration of
the DTS subsystem.
If any errors are encountered, then information will be saved in the NMCONFIG
file that will allow DTCCNTRL to be re-invoked to complete the
changes at a later time. If an operation is partially successful, then those
changes that are successful will be written to NMCONFIX. For example, if you
delete two ldevs and the second ldev can't be deleted because it is in use,
then DTCCNTRL will save information that will allow the second ldev
to be deleted once the device is no longer in use.
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CAUTION: If ANY other configuration file is copied to
NMCONFIG.PUB.SYS or NMCONFIX.PUB.SYS then dynamic
configuration will be disabled until a DTS shutdown and restart is done or
the system is rebooted. This includes other files from the same system or
files copied from other systems.
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If there is some operation that fails, and you wish to undo the change, you
can use NMMGR to change the appropriate screens back to what they were and
then invoke DTCCNTRL.
Follow the steps below to dynamically configure DTS changes. Refer to
chapter 3 Configuring DTCs Step-by-Step,
for more detailed steps on the DTS configuration process using NMMGR for
host-based and PC-based DTC management, respectively.
- Run the NMMGR program and make all desired DTS configuration changes.
The network management configuration file must be
NMCONFIG.PUB.SYS
for the configuration changes to become active dynamically.
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NOTE: If you are changing profile characteristics, you can see which
ldevs and DTCs will be affected by the change by pressing the [Assoc
Ldevs] function key on the profile screen corresponding to the profile
you are changing. After pressing this key, you will see a list of all ldevs
using this profile in the DTCs configured in DTS.
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- After successful validation and cross-validation, NMMGR will prompt you
as to whether you want DTS changes to take effect now. The following
prompt will appear:
Do you want DTS changes to be become active now (Y/N)?
Y = all changes made take effect now
N = all changes made will take effect upon next dynamic
configuration or system boot
H = help
>
If you type Y, dynamic configuration changes will take effect
now. NMMGR calls DTCCNTRL which dynamically implements the DTS
changes made in NMMGR.
If you type N, dynamic configuration changes will not take
effect now. Your changes will take effect the next time dynamic
configuration is invoked, a DTS shutdown/restart is performed, or the
system is rebooted. Dynamic configuration changes can be implemented
later by calling DTCCNTRL from the CI prompt any time
thereafter. Or you can run NMMGR again and select validate DTS/Link. See
the section "DTCCNTRL After NMMGR Exit," for steps on how to
invoke the DTCCNTRL command at the CI prompt.
If you type H, you will see help text describing the
options.
- If you selected Y in step 2 above and the DTS changes you have
made are dynamically configurable, no other action is required and
changes will become active automatically. You will see a message on the
screen indicating that no other actions are required.
If the DTS changes you have made require additional actions before
changes become active, refer to Chapter 5
"Preparing to Configure X.25 iX System Access" and
Chapter 6 "Configuring X.25 Links Step-by-Step"
step 9, for more information. If this is the case, you will see messages
on the screen indicating what actions are required before changes become
active.
Refer to Table 7-1 "Dynamically
Configurable Tasks" for a list of configuration changes that can be
modified dynamically.
- After viewing the messages describing what actions are required, if any,
enter [RETURN] when you see the prompt:
(Press RETURN when finished viewing screen contents.)
You will return to the Validation screen. From here you can make further
changes or exit NMMGR.
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