Hardware Installation and Reference Guide Troubleshooting
41
The serial port console
has no output or outputs
illegible characters.
The serial port connected to the
switch is different from that enabled
on the configuration software.
The serial port is not configured
correctly.
Change the serial port enabled on the
configuration software to the serial port
connected to the switch.
Check that the serial port parameter settings are
consistent with the serial port configuration
description.
The RJ45 port cannot be
connected or an error
occurs in the
transmission and
receiving of frames.
The connected twisted pair cable is
faulty.
The cable length exceeds 100 m
(328.08 ft).
The port is specially configured and
does not use the same work mode as
the interconnected 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
incorrectly/reversely.
The types of the interconnected
optical modules do not match.
The optical fiber type does not meet
requirements.
The optical fiber length exceeds the
allowed length marked on the optical
module.
Switch the Rx and Tx ends of the fiber-optic cable.
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
appropriate length.