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a. Execute the display interface brief command to examine whether the speed and duplex
mode of the port match the speed and duplex mode of the transceiver module.
b. If they do not match, use the speed command and the duplex command to set the rate and
duplex mode for the port.
3.
Verify that the ports at both ends are operating correctly:
a. For a QSFP28 fiber port, use a QSFP28 cable to directly connect it to another fiber port of
the same type on the local end.
b. Identify whether the port can come up:
− If the port can come up, you can determine that the peer port fails. Replace the peer port
− If the port cannot come up, you can determine that the local port fails. Replace the local
4.
Verify that the transceiver module and cable are operating correctly:
a. Use the display transceiver alarm interface command to check for alarms on the
transceiver module:
− The device displays None if no error has occurred.
− The device displays alarms if the transceiver module has failed or if the type of the
b. Use an optical power meter to verify that the Tx power and Rx power of the transceiver
module are stable and are within the correct range.
c. Execute the display transceiver interface command to verify that the local transceiver
module has the same wavelength and transmission distance as the peer transceiver
module.
d. If the transceiver module is not operating correctly, replace it with an H3C transceiver
module that matches the fiber port.
For more information about transceiver modules and cables, see the installation guide for
the switch.
5.
Verify that the fiber matches the transceiver module. If they do not match, replace the fiber with
a new one that matches the transceiver module.
For more information about fibers, see the installation guide for the switch.
6.
If the problem persists, contact H3C Support.
Non-H3C transceiver module error message
Symptom
The output from the display logbuffer command shows that the transceiver module is not an H3C
transceiver module.
with a new port operating correctly.
port with a new port operating correctly.
transceiver module does not match the port type.
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Table of Contents
Troubleshooting
