HP FlexFabric 12900 series Troubleshooting Manual page 15

Question
Are large numbers of error
packets generated in the
outbound or inbound
direction of the port?
Does the port change
between an up and down
state frequently?
Fiber ports
Do the ports at the two ends
use the same port settings?
Are CRC errors present on
any fiber port? Is the
number of CRC errors
increasing?
Trunk port configuration
Do the peer trunk ports use
the same PVID?
Are the peer ports assigned
to the same VLANs?
Command or method
display interface
display logbuffer
display current-configuration
interface
display interface
display current-configuration
interface
display current-configuration
interface
11
Result Remarks
If an error counter displays
a non-zero value and the
value is increasing, check
for the following errors:
□OK
•
Link and
□Not OK
optical-electrical
□Not related
converter errors.
•
Port setting
inconsistencies with the
peer port.
If the port state flaps, check
for the following errors:
•
Link and
optical-electrical
□OK
converter errors.
□Not OK
•
Optical power threshold
crossing events if the
□Not related
port is a fiber port.
•
Port setting
inconsistencies with the
peer port.
To connect an HP device to
a device from another
□OK
vendor, HP recommends
□Not OK
that you set the same port
□Not related
rate and duplex mode
settings at the two ends.
If CRC errors persist,
□OK
replace the transceiver
□Not OK module or pigtail fiber, or
clean the transceiver
□Not related
module connector.
□OK
Make sure the same PVID is
□Not OK configured on the trunk
ports between two devices.
□Not related
Make sure the trunk ports
between two devices are
assigned to the same
□OK
VLANs.
□Not OK
For example, if you assign a
□Not related
trunk port to all VLANs, also
assign its peer port to all
VLANs.