Troubleshooting Ports; Fiber Port Remains In Down State; Symptom; Troubleshooting Flowchart - H3C S5850-54QS Troubleshooting Manual

Troubleshooting ports

This section provides troubleshooting information for common port issues.

Fiber port remains in down state

Symptom

A fiber port (SFP+ port or QSFP+ port) remains in down state.

Troubleshooting flowchart

Figure 11 Troubleshooting fiber port's failure to come up
Fiber port remains in down
Speed/duplex match
on local and peer port?
Yes
Speed/duplex
match on transceiver module and
Yes
Local/peer port
operating correctly?
Yes
module/cable correct?
Yes
Fiber correct?
Yes
Contact the support
state
No
port?
No
No
Transceiver
No
No
Configure matching
speed/duplex
Configure matching
speed/duplex
Replace local/peer port
Replace transceiver
module/cable
Replace fiber
23
Yes
Resolved?
No
Yes
Resolved?
No
Yes
Resolved?
No
Yes
Resolved?
No
Yes
Resolved?
No
End