3com 3031 Instruccion De Instalación
Telnet Terminal Services
109
Terminate the redirect connection using the combo key <Ctrl+]>.
1) The interfaces of devices connected with the async interface of the router must
also work in async flow mode.
also work in async flow mode.
2) Telnet port number in establishing the redirect connection is numbered as
follows: Telnet port number is equal to TTY number plus 2000. Various user
interfaces and their numbers can be displayed using the
follows: Telnet port number is equal to TTY number plus 2000. Various user
interfaces and their numbers can be displayed using the
display
user-interface
command. Moreover, TTY user interface number is one-to-one
with each async interface of the router.
Communicate with the external device on the seventh async serial interface of the
router (IP address of the router is 10.110.164.44, and assume that the router and
its external device have been configured).
router (IP address of the router is 10.110.164.44, and assume that the router and
its external device have been configured).
<3Com>telnet 10.110.164.44 2007
Trying 10.110.164.44 ...
Connected to 10.110.164.44
After establishing Telnet redirect connection, you can send commands to
communicate with the connected devices on the async interface. If the connected
one is Modem, you can detect its status or configure it.
communicate with the connected devices on the async interface. If the connected
one is Modem, you can detect its status or configure it.
Displaying and
Debugging
After the above configuration, execute display command in any view to display the
running of the Telnet configuration, and to verify the effect of the configuration.
running of the Telnet configuration, and to verify the effect of the configuration.
To prevent unauthorized users from illegal access, if no inputs have been received
from the terminal user in a certain period of time, the connection with the user
from the terminal user in a certain period of time, the connection with the user
Table 115 Establishing Telnet redirect connection
Operation
Command
Configure the async interface of the
external router to work in flow
mode.
external router to work in flow
mode.
async mode flow
Enable Telnet redirect function (only
on AUX and TTY interfaces)
on AUX and TTY interfaces)
redirect
Disable terminal service in user
interface
interface
undo shell
Re-execute the Telnet to log in to
the router with the specified port
number, and to establish the async
interface connection corresponding
to the specified port of the router
the router with the specified port
number, and to establish the async
interface connection corresponding
to the specified port of the router
telnet [ vpn-instance
vpn-instance-name ] host-ip-address
service-port
vpn-instance-name ] host-ip-address
service-port
Table 116 Monitoring and maintenance of the Telnet connection
Operation
Command
Enable timeout of the Telnet connection
idle-timeout minutes [ seconds ]
Restore the period of timeout to the default
undo idle-timeout
Display the connection status of the current
LINE
LINE
display users
Display the connection status of each LINE
display users all
Display all current established TCP connections
display tcp status