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Troubleshooting flowchart
Figure 6 Troubleshooting link up failure on a port
Solution
To resolve the issue:
1.
Verify that the transceiver module is operating correctly:
a.
Execute 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
transceiver module does not match the port type.
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 a new H3C transceiver
module that matches the fiber port.
For more information about transceiver modules, see the installation guide for the switch.
2.
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.
3.
Verify that the local port is operating correctly:
Replace the local port with a new one to identify whether this issue has been resolved.
Replace transceiver module
Yes
Yes
No
No
Yes
Yes
No
No
Transceiver module correct?
Fiber correct?
Local port operating correctly?
Resolved?
No
Yes
Yes
No
Resolved?
No
Yes
Yes
No
100GE QSFP28 fiber port fails
to come up
Collect information and
contact the support
End
Resolved?
Resolved?
Replace fiber
Replace local port
Replace peer port
Peer port operating correctly?