Hardware Installation and Reference Guide
Maintenance and Troubleshooting
5
Maintenance and Troubleshooting
5.1
General Troubleshooting Procedure
5.2
Troubleshooting Common Faults
Symptom
Possible Causes
Solution
Forgetting the
management interface
login password
A password is manually configured but
it is forgotten.
Please contact Ruijie Networks Customer Service
Department for technical support.
The status indicator is
not on after the switch
is started.
The power supply module does not
supply power.
The power cable is in loose contact.
Check whether the power socket at the equipment
room is normal and whether the power cable of the
switch is in good contact.
The serial port
console has no output
or outputs illegible
characters.
The serial port connected to the switch
does not match that opened by the
configuration software.
The serial port is not configured
correctly.
Change the serial port opened by the configuration
software to be the one connected to the switch.
Check that the parameter configuration of the serial
port matches that specified in the instructions.
The RJ45 port is not in
connectivity or it is
erroneous in
The connected twisted pair cable is
faulty.
The length of the cable exceeds 100 m.
Replace the twisted pair cable.
Check that the port configuration has the common
working mode with the connected switch.
