11 telnet—using a network virtual terminal, Running telnet at a terminal – HP Integrity NonStop H-Series User Manual

Page 130

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11 TELNET—Using a Network Virtual Terminal

The TELNET application allows you to emulate a virtual terminal connected to a remote host. You
can connect to any remote host on the network that has a TELNET server. You can also transfer
data to a remote system through a non-TELNET port.

Running TELNET at a Terminal

To run the TELNET client on your Guardian system, you must enter the TELNET run command at
the command interpreter prompt. The form of the TELNET run command is:

telnet [ / run-option [ , run-option ] ... / ]

[ host [ port ] ]

run-option

is an operating system RUN command option. See the RUN command in the TACL Reference
Manual
for a complete description of the run options. If you specify an IN file, the file must be
a terminal.

host

identifies the remote host system. You can specify host as a host name or host internet address.
For information about specifying host names and addresses, see Addressing Remote Hosts on
page 1-5, in Section 1, Introduction to TCP/IP Applications and Utilities.

port

identifies the TCP port number. The default (well-known) port number is 23.

If you do not specify host, TELNET places you in command mode and displays the TELNET prompt
(telnet>). You can enter TELNET client commands at this prompt.

If you specify host, TELNET connects you to the remote system and places you in input mode.
TELNET negotiates with the remote system to determine what terminal options are available. After
TELNET completes the negotiations, prompts from the remote system should appear.

NOTE:

Ask your system manager for the name of an appropriate TCP/IP process to serve as

your transport service provider.

Considerations for choosing an appropriate process are:

While communicating with the remote system, you can enter the escape character to invoke the
telnet> prompt and to change to TELNET command mode. You enter the escape character by
pressing the CTRL key simultaneously with the right bracket (]) key.

After you enter a TELNET client command and press the RETURN key, you return to input mode.

Table 11

summarizes the TELNET client commands.

Table 11 TELNET Command Summary

Purpose

Command

Disconnect from remote system and return to TELNET
prompt.

close

Display TELNET special characters and current settings of
toggle controls.

display

Display information about TELNET commands.

help or ?

Set the input mode.

mode

Connect to remote system.

open

130 TELNET—Using a Network Virtual Terminal

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