Troubleshooting Flowchart; Solution - H3C S5150-EI Series Troubleshooting Manual

Troubleshooting flowchart

Figure 6 Troubleshooting link up failure on a copper port
A copper port failed to go up
Speed/duplex
match at both ends?
Network cable correct?
Local port operating correctly?
Peer port operating correctly?
Contact H3C Support

Solution

To resolve the problem:
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 problem persists, contact H3C Support.
No
Yes
No
Yes
No
Yes
No
Yes
Configure matching
speed/duplex
Replace network cable
Replace local port
Replace peer port
21
Yes
Resolved?
No
Yes
Resolved?
No
Yes
Resolved?
No
Yes
Resolved?
No
Resolved