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

Migrating from Previous Releases
Migrating your Configuration to Host-Based Management
Appendix B
199
Configuration Issues to Consider before Migrating
This section describes different configuration situations that you may have on your
OpenView DTC Manager PC and Host systems and what you can do to reconfigure some
items to make the migration go as smoothly as possible. This section also describes what
configuration changes you may need to make after performing the migration process. In
all situations these configuration considerations only need to be applied to the system
that will become the host system that will manage DTCs. If you want, you can elect to
distribute the DTC to more than one host.
Your Host’s Configuration is Currently PC-Based
The migration process was designed such that this is the most likely situation that will
be migrated to Host-based DTC management. In this situation, there are the following
four scenarios to consider. It is possible that your configuration will have one or more of
these conditions. Review both the PC-based and Host-based configurations in your
NMCONFIG file and take the ACTIONs described below to reconfigure your file to best
migrate your configuration.
All of the DTCs migrated from the PC are also configured in the PC-based tree
on the host
This means that there is a one-to-one correspondence between the DTC migrated from
the PC and those that are configured in the PC-based tree in the NMCONFIG file. The
DTCs are matched by comparing the DTC Node Name.
All of the nailed ldevs numbers configured on the PC-Based DTCs will be merged onto
the Host-based DTC. The non-nailed TIO ports and the HOST type ports will be retained
on the Host-based DTC.
ACTION: To minimize the corrections to the configuration after the migration,
check that all SIC printer ports and all PAD devices that were
configured on the PC have an ldev number assigned on the
corresponding DTC in the PC-based tree. The TIO ports are matched
by card and port number and the PAD ports are matched by the PAD
device name.
Any SIC printer or PAD device that does not have a corresponding
configuration in the PC-based tree will be left with the TIO ports
configured with ldev of (-1) and PAD ports configured with ldev of (1) in
the Host-based tree. Both the Host Migration tool and Validation will
detect the error. Use NMMGR to correct the configuration and rerun
validation.
There is still a DTC configured in the Host-base tree
ACTION: You must delete any DTCs that are configured in the Host-based tree
prior to performing the migration process otherwise the following
behaviors will occur.
For each DTC remaining in the Host-based tree:
• Any DTC with the same DTC name as the DTC Label on the PC will be overwritten
with the configuration from the PC.
• When the Host migration tool is run, the PC-based tree will be searched for a DTC
with a matching DTC Node Name. If a DTC with the same DTC Node name exists in
the PC-based tree, the configuration will be merged with the Host-based DTC.