HP ProCurve 6400cl Installation And Getting Started Manual page 53

Tip Problem
The network Try the following procedures:
connection is not
• For the indicated port, verify both ends of the cabling, at the switch and the connected
working
properly.
• Verify the connected device and switch are both powered on and operating correctly.
• Verify you have used the correct cable type for the connection:
• Verify the port has not been disabled through a switch configuration change.
• Verify the switch port configuration matches the configuration of the attached device.
• If the other procedures do not resolve the problem, try using a different port or a
The port may be Use the switch console to see if the port is part of a dynamic trunk (through the LACP
improperly feature) or to see if Spanning Tree is enabled on the switch, and to see if the port may
configured, or have been put into a "blocking" state by those features. The show lacp command displays
the port may be in the port status for the LACP feature; the show spanning-tree command displays the port
a "blocking" status for Spanning Tree.
state by the
Also check the Port Status screen using the show interfaces command to see if the port
normal operation
has been configured as "disabled".
of the Spanning
Other switch features that may affect the port operation include VLANs and IGMP. Use
Tree, LACP, or
the switch console to see how the port is configured for these features.
IGMP features.
For software troubleshooting tips, see the chapter "Troubleshooting" in the Management
and Configuration Guide, which is on the Documentation CD-ROM that came with your
switch.
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.
An RPS is Refer to the ProCurve 600/610 External Power Supplies documentation. You may have to
connected but replace the switch.
the switch has
experienced an
internal power
supply fault.
Expansion cl Check the rear of the switch. Check the module LEDs for indications. This condition will
module is only occur during an initialization self test.
plugged in but
has experienced
a fault.
device, are connected properly.
– For fiber-optic connections, verify the transmit port on the switch is connected to
the receive port on the connected device, and the switch receive port is connected
to the transmit port on the connected device.
You can use the console interface, or, if you have configured an IP address on the
switch, use the web browser interface, or ProCurve Manager network management
software to determine the state of the port and re-enable the port if necessary.
For example, if the switch port is configured as "Auto", the port on the attached device
also MUST be configured as "Auto". Depending on the port type, twisted-pair or fiber-
optic, if the configurations do not match, the results could be a very unreliable
connection, or no link at all.
different cable.
Diagnosing with the LEDs
Solution
Troubleshooting
4-5