Telnet uses virtual device descriptions to maintain client workstation information for open Telnet sessions. Here are the details about configuring and naming virtual device descriptions.
A virtual device workstation attached is a device description that is used to form a connection between a user and a physical workstation attached to a remote system. Virtual devices provide information about your physical device (display or printer) to the programs on the system. The system looks for the attaching client/server protocol to specify a virtual device. If the system cannot find a specified virtual device, it then looks for a designated virtual device in a registered exit program. If the system cannot find a virtual device, it then attempts to match a virtual device description with a device type and model similar to the device on your local system.
The Telnet server uses the following conventions for naming automatically created virtual controllers and devices, according to the i5/OS® standards:
The number of sign-on attempts allowed increases with automatically configured virtual devices. The total amount of sign-on attempts is equal to the number of system sign-on attempts that are allowed, multiplied by the number of virtual devices that can be created. The sign-on system values define the number of sign-on attempts allowed.
The Telnet server reuses available existing virtual devices that were automatically created by selecting virtual devices of the same device type and model. When no more device types and models match but virtual devices are still available, then the device type and model are changed to match the client device and model negotiated. This is true for both automatically created (QPADEV xxxx ) virtual devices, and named virtual devices.
If you choose to manually create your own devices, you should establish naming conventions that allow you to easily manage your configuration. You can select whatever device names and controller names that you want, provided that the names conform to the i5/OS object naming rules.
Related concepts
Creating your own virtual devices