Troubleshooting Flowchart; Solution - HP FlexFabric 12900 series Troubleshooting Manual

Troubleshooting flowchart

Figure 18 Troubleshooting error frames (for example, CRC errors) on a port
Error frames on the port
Determine the type of error
frames accumulating
Optical power
module correct?
duplex match the
medium correct?
View the number of flow
control frames received
Contact the support

Solution

To resolve the problem:
1. Examine the error frame statistics and identify the error frame type:
a. (Optional.) Use the reset counter interface command in user view to clear the packet statistics
of the port.
This command resets all packet counters to 0, so that you can view the statistics changes more
clearly.
b. Use the display interface command to display the incoming packet statistics and outgoing
packet statistics of the port.
c. Determine the type of error frames that are accumulating.
of transceiver
Yes
Speed and
No
peer port?
Yes
Port and link
Yes
Replace it with a transceiver
No
module with correct optical
power
No
Configure matching speed
and duplex
No
Use correct port and link
medium
45
Yes
Resolved?
No
Yes
Resolved?
No
Yes
Resolved?
No
End