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Troubleshooting flowchart
Figure 12 Troubleshooting link up failure on a port
Solution
To resolve the issue:
1.
Verify that the local and peer ports are operating correctly:
a.
Use a QSFP+ cable to directly connect the local port and another 40-GE QSFP+ fiber port
of the same interface module. A QSFP+ cable is suitable for short connections.
b.
If the local port can come up, replace the peer port with a new one (on an interface module
of the same type, if possible) to verify that the peer port is operating correctly.
c.
If the local port cannot come up, replace the local port with a new one (on an interface
module of the same type, if possible) to verify that the local port is operating correctly.
2.
Verify that the transceiver module is operating correctly:
a.
Execute the
display transceiver alarm interface
command to examine the alarms present
on the transceiver module.
−
The device displays
None
if no error occurs.
−
The device displays alarms if the transceiver module fails or 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 wavelength and
transmission distance of the local transceiver module are consistent with the wavelength
and transmission distance of 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 related installation guides.
Local/peer port correct?
Replace local/peer
port
Resolved?
A 40-GE QSFP+ fiber port fails to
come up
No
Yes
No
Yes
Transceiver
module/cable correct?
Replace transceiver
module/cable
Resolved?
No
Yes
Yes
No
Fiber correct
Replace fiber
Resolved?
No
Yes
Yes
No
Contact the support
End
