H3C S5560-EI series - Failure to Send Packets; Symptom; Troubleshooting Flowchart; Solution

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− If the port is a fiber port, replace the transceiver module plugged into the port.
4. If you determine that the configurations, the peer port, and the link are correct but the problem
persists, perform the following tasks:
a. Use the display diagnostic-information command to collect the diagnostic information.
b. Contact H3C Support.
<Sysname> display diagnostic-information
Save or display diagnostic information (Y=save, N=display)? [Y/N]:Y
Failure to send packets
Symptom
A port is up, but it cannot send packets.
Troubleshooting flowchart
Figure 17 Troubleshooting the failure to send packets
Solution
To resolve the problem:
1. Examine the packet statistics of the port:
a. (Optional.) Use the reset counter interface command to clear the packet statistics of the port.
This command resets the values of each statistical field to 0, so that you can view the statistics
changes more clearly.
Modify port
configurations
Port
configurations affect packet
sending?
Port and link
medium correct?
Yes
Use correct port and
link medium
No
No
Yes
View packet statistics of the
port
No
No
Yes
Yes
Contact the support End
A port fails to send packets
Resolved?
Resolved?