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216 AppendixC
NS X.25 Migration: NS 3000/V PAD Access to NS 3000/iX
Migrating from NS 3000/V PAD Access to NS 3000/iX
• L.U.G. Inbound Address from the NS 3000/V screen with the path:
@NETXPORT.NI.niname.PROTOCOL.LUGSPEC.INLUG
• L.U.G. Outbound Address from the NS 3000/V screen with the path:
@NETXPORT.NI.niname.PROTOCOL.X25.LUGSPEC. OUTLUG
PAD Access Migration Categories
The way you assign a PAD device depends on what the device is and
how it will be used. Asynchronous devices attached to DTCs can either
be configured with nailed or non-nailed logical device numbers on each
of the MPE/iX host systems to which they have access. The following
subsections describe the characteristics of nailed and non-nailed
devices.
Non-Nailed Devices
A non-nailed device is a session-accepting device that is not
permanently associated with an ldev number at configuration time.
When the user at such a device logs on to an MPE/iX system, an ldev is
assigned from a pool of ldevs set aside for this purpose at configuration
time. The device characteristics of the PAD devices must match the
non-nailed PAD terminal profile.
The association between a non-nailed device and the assigned ldev
exists only for the duration of the session. One advantage of the use of
non-nailed device connections is that configuration is simplified, since it
is not required that each non-nailed device be individually configured.
The host cannot make an outbound call to a non-nailed device.
Nailed Devices
A nailed device is one with a permanently assigned ldev. The
assignment is configured on the MPE/iX host system. Nailed devices
can be accessed programmatically through their ldev number. There is
an ldev-to-25-address mapping. The host can support both inbound and
outbound calls.
Configuration of Nailed Versus Non-Nailed Devices
Following are some points to remember when configuring nailed and
non-nailed PAD devices:
• Printer must be nailed.
• Terminals may be nailed or non-nailed.
• Programmatic access requires a nailed device.
• Logon access may be either nailed or non-nailed.