Operation Terminal Problems; Information Cannot Be Entered From The Console Or Does Not Appear Correctly - Alaxala AX6700S series Troubleshooting Manual

3. Troubleshooting Functional Failures During Operation

3.3 Operation terminal problems

3.3.1 Information cannot be entered from the console or does not appear
correctly
If a problem occurs during a connection to the console, check the problem and take action
according to Table 3-3: Problems occurring during connection to the console and action to take.
If a problem occurs during connection to the modem, check the problem and take action according
to Table 3-4: Problems occurring during connection to the modem and action to take. Also, see
the documentation provided with the modem.
Table 3-3: Problems occurring during connection to the console and action to take
No. Problem
1 Nothing is displayed on the
screen.
2 Key entry is not accepted.
3 Unexpected characters are
displayed.
4 Unexpected characters are
displayed when a user name
is being entered.
5 Login is not possible.
26
Perform the following procedure:
1. Make sure the ST1 LED on the front panel of the Switch is green. If it is not,
see 1.2 Overview of analyzing failures of all or part of the Switch.
2. Check whether the cables are connected correctly (for example, check for
incomplete insertion).
3. Make sure an RS232C cross cable is being used.
4. Make sure the communication software settings, including port number,
communication speed, data length, parity bit, stop bit, and flow control, are
specified as follows:
Communication speed: 9600 bit/s (or the set value if you have changed this
value)
Data length: 8 bits
Parity bit: None
Stop bit: 1 bit
Flow control: None
Perform the following procedure:
1. Data transmission might have been interrupted by XON/XOFF flow control.
End the interruption by pressing Ctrl + Q. If the Switch still does not accept
entry from the keys after this operation, perform steps 2 and 3.
2. Make sure that the communication software settings are correct.
3. The screen might not respond because Ctrl + S was pressed. Press any key.
Negotiation with the communication software might not have been performed
correctly. Check the software communication speed by doing the following:
1. If the communication speed of CONSOLE (RS232C) was not specified by
using the
line console 0
communication speed of the communication software is set to 9600 bit/s.
2. If the communication speed of CONSOLE (RS232C) has been set to 1200,
2400, 4800, 9600, or 19200 bit/s by using the
command, make sure that the communication speed of the communication
software is set correctly.
The communication speed of CONSOLE (RS232C) might have been changed.
See No. 3.
1. Make sure that the login prompt is displayed on the screen. If it is not, the
Switch is starting up. Wait a while.
2. Use the
aaa authentication login console
configuration commands to make sure that the RADIUS or TACACS+
login
authentication is not set. (For details, see 3.3.4 Login authentication using
RADIUS/TACACS+ is not possible.)
Items to check
configuration command, make sure that the
line console 0
and
aaa authentication
configuration