Troubleshooting Common Faults - Ruijie Reyee RG-NBS3100-24GT4SFP-V2 Installation Manual

Installation Guide
5.2

Troubleshooting Common Faults

Symptom
The management
interface login
password is
forgotten.
The status LED is
off after power-on.
The RJ45 port is
not connected or
an error occurs
when the port is
receiving or
transmitting
frames.
The optical port
cannot be
connected.
Possible Causes
A password is manually configured
but it is forgotten.
The power supply is not enabled,
or the power cable is loosened.
The connected twisted pair cable
is faulty.
The length of the cable exceeds
100 m.
The port has special configuration,
which does not adapt to the
working mode of the connected
switch.
The Rx and Tx ends are
connected reversely.
The interconnected optical module
type does not match.
The fiber type is incorrect.
The length of the optical module
exceeds the rated value.
Solution
Press the reset button to restore the default
settings.
Check whether the power socket is normal.
Check whether the power cable is correctly
connected.
Replace the twisted pair cable.
Check that the port configuration has the
common working mode with the connected
switch.
Switch the Rx and Tx ends of the optical
module.
Replace the optical module with one of the
matched type.
Replace the optical module with one of the
appropriate type.
Replace the optical module with one of the
appropriate length.
20
Troubleshooting