HP Aruba 8325 Series Installation And Getting Started Manual page 57

Table 32: Diagnostic tips
Tip Problem
5 The network connection
is not working properly.
6 The port may be
improperly configured,
or the port may be in a
"blocking" state by the
normal operation of the
Spanning Tree, LACP,
or IGMP features.
Chapter 6 Troubleshooting
Solution
Try the following procedures:
For the indicated port, verify that both ends of the cabling, at the switch and
the connected device, are connected 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:
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.
The cable verification process must include all patch cables from any end
devices, including the switch, to any patch panels in the cabling path.
Verify the port has not been disabled through a switch configuration change.
You can use the console interface, or, if you have configured an IP address on
the switch, use the Web browser interface to determine the state of the port
and re-enable the port if necessary.
Verify the switch port configuration matches the configuration of the attached
device. For example, if the switch port is configured as "Full-duplex", the port
on the attached device also MUST be configured as "Full-duplex". If the
configurations don't match, the results could be a very unreliable connection,
or no link at all.
If the other procedures don't resolve the problem, try using a different port or a
different cable.
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 interfaces 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.
Ensure also, that 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.
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