Ruijie M5750-24GT/12SFP, Руководство по установке

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Hardware Manual Chapter 3 Troubleshooting
3-1
Troubleshooting
3.1 Common Troubleshooting
Procedures
Symptom Possible Cause Solution
Forgetting the
management
interface login
password
Please contact the Ruijie
Networks Customer Service
Department for technical
support.
The status LED does
not turn on after
power-on
The power supply does not
work;
The power cable is in loose
contact.
Verify that the power socket in
the equipment room is normal
and that 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;
Verify 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
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;
Verify 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;
Exchange the Rx and Tx ends
of the optical fiber;
Replace the optical module with
one of the matched type;
Replace the optical fiber with