Terminal Access Troubleshooting - 3Com MSR 50 Series Configuration Manual

800 C 53: T
HAPTER ERMINAL
Terminal Access
Troubleshooting
A T
CCESS ROUBLESHOOTING
No. Prompt
14 (authentication failed, invalid
TTY No.!)
15 (authentication failed,
unknown error!)
Check if there is any prompt displayed on the terminal
1 If there is a prompt displayed on the terminal
Refer to "Prompts on Terminals" on page 799
Unix server can ping each other" on page 802
2 If there is no prompt displayed on the terminal
Refer to "Check whether the cable connecting the terminal to the router is OK"
on page 800.
3 Verify terminal connectivity by using the terminal connectivity test hotkey
In router terminal access, a command is provided for testing terminal connectivity.
This command can be used to test the physical connectivity between a terminal
and a router and the TCP connectivity between the terminal and the Unix server.
Once the terminal connectivity test hotkey is configured in interface view, the
terminal connectivity test function is enabled.
Now, you can enter the test hotkey on the terminal. If the physical connectivity
between the terminal and router is correct, the terminal screen will display
"Terminal to Router test OK!" if you have set the language type to English on the
Unix server. This means the connectivity between the terminal and the
asynchronous serial interface of the router is correct and they can exchange data
with each other normally. Refer to
ping each other" on page
the Unix server is correct, the terminal screen displays "Terminal to Unix test OK!".
This means a TCP connection has been established between the application used
by the terminal and the ttyd program on the UNIX server, and the terminal can
communicate with the server normally. Refer to
configuration of system file inittab" on page
Check whether the cable connecting the terminal to the router is OK
1 Pin assignment of the asynchronous serial interface and terminal access converter
If the terminal displays nothing on its screen, verify that the cable connection is
correct. Different models of terminals have different pin assignments with their
primary serial interfaces, so a certain type of converter may be required.
In terminal access, 8ASE and 16ASE modules and their cables are used the most
frequently. The connection cables for the 8ASE/16ASE modules have 8/16
asynchronous serial interfaces, namely 8AS/16AS cables, which fall into three
types: 8AS/16AS cable (DB-25/DB-9), 8AS/16AS cable (RJ-45 for telecom), and
8AS/16AS cable (RJ-45 for banks). "Telecom" means that the 8AS/16AS (RJ-45)
Description
Authentication of a terminal failed. The terminal
number is not identical to that configured in the
ttyd configuration file on the Unix server.
Authentication of a terminal failed. An unknown
error occurred.
or
for detailed information.
"Check whether the router and Unix server can
802. If the TCP connection between the terminal and
"For an active terminal, verify the
804.
"Check whether the router and