23
A copper port fails to come up
Symptom
A copper port fails to come up.
Troubleshooting flowchart
Figure 6 Troubleshooting link up failure on a copper 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 rate and
duplex mode for the port.
2.
Replace the network cable with a new one to verify that the network cable is in good condition.
3.
Replace the local port with a new one to verify that the local port is operating correctly.
4.
Replace the peer port with a new one to verify that the peer port is operating correctly.
5.
If the issue persists, contact H3C Support.
Speed/duplex
match at both ends?
Network cable correct?
Configure matching
speed/duplex
Resolved?
Replace network cable
Contact H3C Support
A copper port failed to go up
No
Yes
No
Yes
Resolved?
No
Yes
Yes
No
Resolved
Local port operating correctly?
Replace local port
Resolved?
No
Yes
Yes
No
Peer port operating correctly?
Replace peer port
Resolved?
No
Yes
Yes
No
