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Troubleshooting flowchart
Figure 5 Troubleshooting link up failure on a port
Solution
To resolve the issue:
1.
Verify that the speed and duplex mode of the local port match the speed and duplex mode of
the peer port:
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 peer port.
b.
If they do not match, use the
speed
command and the
duplex
command to set the speed
and duplex mode for the port.
2.
Verify that the speed and duplex mode of the port match the speed and duplex mode of the
transceiver module:
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 speed
and duplex mode for the port.
3.
Verify that the local and peer ports are operating correctly:
Speed/duplex match on
transceiver module and port?
Resolved?
Configure matching
speed/duplex
No
Yes
No
Yes
Resolved?
No
Yes
Yes
No
Resolved?
No
Yes
Yes
No
Fiber correct?
Resolved?
No
Yes
Yes
No
Resolved?
No
Yes
Yes
No
10-Gigabit SFP+Fiber port
fails to come up
Collect information and
contact the support
End
Speed/duplex match on
local and peer port?
Local/peer port operating
correctly?
Transceiver module/cable correct?
Configuring matching
speed/duplex
Replace local/peer port
Replace transceiver
module/cable
Replace fiber