Ruijie RG-NBS3100 Series Switches Hardware Installation and Reference Guide
Troubleshooting
31
5 Troubleshooting
5.1 General Troubleshooting Flowchart
5.2 Troubleshooting Common Faults
Symptom
Possible Causes
Solution
Forgetting
the
management interface
login password
A password is manually configured but
it is forgotten.
Press the reset button to restore the default
settings.
The Status LED is off
after power-on.
The power supply is not enabled, or the
power cable is loosened.
Check whether the power socket is normal.
Check whether the power cable is correctly
connected.
The RJ45 port is not in
connectivity or it is
erroneous
in
receiving/transmitting
frames.
The connected twisted pair cable is
faulty.
The length of the cable exceeds 100 m.
The port has special configuration that
has no common working mode with the
connected switch.
Replace the twisted pair cable.
Check that the port configuration has the common
working mode with the connected switch.
The fiber port cannot
be connected.
The Rx and Tx ends are connected
reversely.
The interconnected optical module type
does not match.
The fiber type is not correct.
The length of the optical fiber exceeds
Switch the Rx and Tx ends of the optical fiber.
Replace the optical module with one of the
matched type.
Replace the optical fiber with one of the
appropriate type.
Replace the optical fiber with one of the
