Technical data

There are other printer protocols that layer upon TCP/IP, including CPAP

(Common Printer Access Protocol), LPD, and Telnet. DCPS uses CPAP to

communicate with DIGITAL PrintServer printers.

Note

DCPS does not support the Telnet or LPD protocols.

To communicate with your printer using raw TCP/IP, the NIC, print server,

or terminal server that you use to connect your printer to the network must

provide a raw TCP/IP port. Further, this raw TCP/IP port must support bi-

directional communication between the printer and your OpenVMS system.

DCPS does not work with unidirectional ports, such as those found on the

NICs for the DEClaser 3500 and 5100 printers, the RapidPrint 200, and

Hewlett-Packard JetDirect cards that interface with the printer via its XIO

(versus MIO) slot.

Before you can communicate with your printer via TCP/IP, you must deﬁne

an IP address for it. You may also assign a name to the address. Refer to

the printer documentation for information on setting the printer’s IP address.

Refer to Compaq TCP/IP Services for OpenVMS, Process Software MultiNet

for OpenVMS, or Process Software TCPware documentation for information on

conﬁguring your OpenVMS system’s TCP/IP environment. If your printer is

connected through a print server or terminal server, you must conﬁgure the IP

address of the server. You also need to conﬁgure the connection between the

printer and the server (for example, you may need to perform actions similar to

those described in Section 2.1.2.2.2 for LAT printers). Refer to documentation

for your terminal server or printer server for information on conﬁguring its

network and printer interfaces.

2.1.2.2 LAT Printers

2.1.2.2.1 Conﬁguring the Printer for LAT Access To conﬁgure serial printers

as network printers through a LAT connection to the Ethernet, change the

following:

1. If you are using a serial printer connected via a terminal server,

set the necessary port and server characteristics for the printer (see

Section 2.1.2.2.2 for DECserver devices).

2. Make the necessary changes to SYS$STARTUP:LAT$SYSTARTUP.COM

(see Section 2.1.2.2.3).

3. Set the communications speed (see Section 2.1.2.2.4).

2–4 Setting Up Printers