Failure To Send Packets; Symptom; Troubleshooting Flowchart - H3C S6890 Series Troubleshooting Manual

As a best practice, configure the port as an edge port or disable the spanning tree feature on
the port if it is directly connected to a terminal.
c. If the port is in an aggregation group, use the display link-aggregation summary
command to verify that the status of the port is Selected.
If the status of the port is Unselected, the port cannot send or receive data packets.
Determine the reasons why the port becomes Unselected, for example, the attribute
configurations of the port are different from the reference port. Modify the attribute
configurations of the port to make the port become Selected.
4. Verify that the link medium connected to the port is operating correctly.
Plug the link medium into a new port that is operating correctly. If the new port cannot receive
packets, replace the link medium.
5. If the issue persists, collect diagnostic information and contact H3C Support.
To collect diagnostic information, execute the display diagnostic-information
command to display or save running status data for multiple feature modules.
<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 11 Troubleshooting failure to send packets
A port failed to send packets
View packet statistics of the
configurations affect packet
Port and link
medium correct?
Contact the support
port
Port
Yes
sending?
No
No
Yes
Modify port
configurations
Use correct port and
link medium
31
Yes
Resolved?
No
Yes
Resolved?
No
End