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, 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 |
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.
