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3. Check whether the configuration of the serial port on the HyperTerminal is consistent with that in
Configuration Guide (such as SSH, Telnet) log in to the switch to check the working status of the serial port. It
may be necessary to view and configure the serial port through the command line interface or web interface
of the switch.
4. Replace the serial cable or serial adapter: If none of the above methods solve the problem, try to replace the
serial cable or use a different serial adapter. Sometimes glitches can appear on these hardware.
5. Contact Vendor Support: If there is still no output on the serial port, please contact FS technical support.
Fault 5: The serial port console output is garbled
Fault Symptom
The serial port console output is garbled.
Handling Method
1. Check the serial port settings: Make sure the serial port settings used match the console settings of the
switch. Check whether the settings of baud rate, data bits, stop bits and parity bits are correct. If the settings
do not match, it will cause data transmission errors, resulting in garbled characters.
2. Check the terminal software encoding setting: In the terminal software, check whether the character
encoding setting is correct. Make sure that the character encoding used is consistent with the character
encoding of the switch, usually ASCII encoding is used.
3.Contact Vendor Support: If there is still no output on the serial port, please contact FS technical support.
Fault 6: The newly inserted expansion module cannot be powered on
Fault Symptom
The system runs normally, the indicators on the panel of the newly inserted expansion module are all off, and
the ports can not work normally.
Handling Method
First confirm whether the module is inserted in place. If everything is normal, but the newly inserted module
still can not be powered on and works, please contact FS technical support.
Fault 7: The link can not be set up between optical ports
Fault Symptom
The system runs normally. After you insert an optical transceiver into an optical port and plug in a fiber cable,
the link cannot be set up.
Handling Method
1. Check whether the receive and transmit ends are reversed. The transmit end of an optical port must be
connected to the receive end at the other end. You can confirm both ends by exchanging the connection
order of two fiber cables.
Troubleshooting After Installation
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