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Tip
Problem
The port may be
improperly
configured, or
the port may be in
a "blocking"
7
state by the
normal operation
of the Spanning
Tree, LACP, or
IGMP features.
The power
supply has
8
experienced a
fault.
The switch has
9
overheated.
The port may
have an internal
hardware failure,
or the port may
10
be denied PoE
power or
detecting an
external PD fault.
A 10G Expansion
Module has
11
experienced a
fault.
Use the switch console to see if the port is part of a dynamic trunk (through the LACP
feature) or to see if Spanning Tree is enabled on the switch, and to see if the port may
have been put into a "blocking" state by those features. The show lacp command displays
the port status for the LACP feature; the show spanning-tree command displays the port
status for Spanning Tree.
Also check the Port Status screen using the show interfaces command to see if the port
has been configured as "disabled".
Other switch features that may affect the port operation include VLANs and IGMP. Use
the switch console to see how the port is configured for these features.
For software troubleshooting tips, see the chapter "Troubleshooting" in the Management
and Configuration Guide for your switch at
Make sure also, the device at the other end of the connection is indicating a good link to
the switch. If it is not, the problem may be with the cabling between the devices or the
connectors on the cable.
Check the power supply to make sure it is plugged in to an active power source. If this is
ok but the LEDs are still blinking, the power supply may have failed. Try unplugging and
then replugging the power supply. If the fault light is still blinking, replace the power
supply.
Check to ensure the fans are functioning correctly.
Check the port for a hardware failure, this may require a reboot of the switch. Check the
port for correct PoE configuration and check for PoE allocation. Also check the external
PD for a fault.
1. Try resetting the switch by pressing the Reset button on the front of the switch, or by
power cycling the switch.
2. If the fault indication reoccurs, the 10G Expansion Module may have to be replaced.
If necessary to resolve the problem, contact your HP authorized LAN dealer, or use the
electronic support services from HP to get assistance. See
Services" on page 5-15.
Diagnosing with the LEDs
Solution
www.hp.com/networking/support
"HP Customer Support
Troubleshooting
.
5-7
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Table of Contents
Troubleshooting
