Axel AX3000 Platine Terminal Ethernet TCP/IP 65E Manuel d'utilisateur télécharger pdf (Page 116)

Installing under UNIX/LINUX

102 AX3000 - User's Manual

Click the tab corresponding to the preferred method and add VNC terminals.

(The Linux server will be rebooted for modifications take effect)

5.3 - CONTROLLING PRINTERS

Auxiliary ports (2 serial and 1 parallel) and logical ports (USB and TCP) are

provided by the AX3000. These ports are independently controlled so multiple

printers can be attached to the AX3000.

A printer is generally controlled by a network service:

- tty protocol: this is an Axel proprietary protocol. A printer controlled by

the tty protocol is seen as a local printer.

- LPD protocol: this service (RFCs 1048 and related) is provided as a

standard feature by major operating systems (Unix/Linux, Windows, etc.).

The main benefit of this protocol is an LPD printer can be shared by

different operating systems.

- rsh command: this command allows the contents of a file to be

redirected over the network.

In addition, a printer can also be controlled in "transparent mode" (by embedded

escape sequences, like a printer attached to a serial terminal).

The following covers the tty protocol, the rsh command and the transparent

mode. For more information about LPD printers, refer to Appendix A.3.

5.3.1 - The tty Protocol

The tty server is a Axel proprietary protocol. An additional piece of software is

needed (see Chapter 5.4).

The Unix/Linux host must run the AXEL tty server daemon (axttyd). The

configuration file axttyd must contain a list of AX3000 auxiliary ports and the

pttys associated with each.

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Axel AX3000 Platine Terminal Ethernet TCP/IP 65E Manuel d'utilisateur Page 116