HP Aruba 3810M Series Installation And Getting Started Manual page 71

Tip
4 One or more of the switch cooling fans may have
failed.
5 The network port for which the LED is blinking has
experienced a self test or initialization failure.
6 The network connection is not working properly.
Problem Solution
Packard Enterprise Customer Support Services" (page
79).
Try disconnecting power from the switch and wait a few
moments. Then reconnect the power to the switch and
check the LEDs again. If the error indication reoccurs,
one or more of the fans has failed. The switch has four
fans and may continue to operate under this condition
if the ambient temperature does not exceed normal
room temperature, but for best operation, the fan tray
should be replaced. See Chapter 4
Components for more information on how to replace
the fan tray.
Call your Hewlett Packard Enterprise authorized
network reseller, or use the electronic support services
from Hewlett Packard Enterprise to get assistance. See
"Hewlett Packard Enterprise Customer Support
Services" (page 79).
Try power cycling the switch. If the fault indication
reoccurs, the switch port may have failed. Call your
Hewlett Packard Enterprise authorized network reseller,
or use the electronic support services from Hewlett
Packard Enterprise to get assistance. See
Packard Enterprise Customer Support Services" (page
79).
If the port is a pluggable SFP/SFP+ unit, verify it is one
of the pluggables supported by the switch. Unsupported
pluggables will be identified with this fault condition.
Caution: Use only supported genuine Hewlett Packard
Enterprise transceivers with your switch.
To verify the port has failed, try removing and
reinstalling the SFP/SFP+. You can do that without
having to power off the switch. If the port fault indication
reoccurs, you will have to replace the SFP/SFP+ unit.
Try the following procedures:
For the indicated port, verify 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 twisted-pair connections to the fixed 10/100
or 10/100/1000 ports, if the port is configured to
"Auto" (auto negotiate), either straight-through or
crossover cables can be used because of the
switch's "Aruba Auto-MDIX" feature and the Auto
MDI/MDI-X feature of the 10/100/1000-T port.
Diagnosing with the LEDs
Replacing
"Hewlett
71