Diagnostic Tips - HP 2920 Installation And Getting Started Manual

Diagnostic Tips:

Tip Problem
The switch is not
plugged into an
active AC power
source, or the
switch's power
1
supply may have
failed. The
switch will not
power up if the
top of the chassis
is removed.
A switch
hardware failure
2
has occurred. All
the LEDs will stay
on indefinitely.
The switch has
experienced a
3
software failure
during self test.
One or more of
the switch
4
cooling fans may
have failed.
The network port
for which the LED
is blinking has
5
experienced a
self test or
initialization
failure.
1. Verify the power cord is plugged into an active power source and to the switch. Make
sure these connections are snug.
2. Try power cycling the switch by unplugging and plugging the power cord back in.
3. If the Power LED is still not on, verify that the AC power source works by plugging
another device into the outlet. Or try plugging the switch into a different outlet or try a
different power cord.
If the power source and power cord are OK and this condition persists, the switch power
supply may have failed. Call your HP authorized LAN dealer, or use the electronic support
services from HP to get assistance. See
Try power cycling the switch. If the fault indication reoccurs, the switch may have failed.
Call your HP authorized LAN dealer, or use the electronic support services from HP to get
assistance. See "HP Customer Support Services" on page 5-15.
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, attach a console to the switch (as indicated in chapter
2) and configure it to operate at 9600 baud. Then, reset the switch. Messages should
appear on the console screen and in the console log identifying the error condition.
You can view the console log at that point by selecting it from the console Main Menu.
If necessary to resolve the problem, contact your HP authorized LAN dealer, or use the
electronic support services from HP to get assistance.
Services" on page 5-15.
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.
If necessary to resolve the problem, contact your HP authorized LAN dealer, or use the
electronic support services from HP to get assistance.
Services" on page 5-15.
Try power cycling the switch. If the fault indication reoccurs, the switch port may have
failed. Call your HP authorized LAN dealer, or use the electronic support services from
HP to get assistance. See "HP Customer Support Services" on page 5-15.
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 HP 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.
Diagnosing with the LEDs
Solution
"HP Customer Support Services" on page 5-15.
See"HP Customer Support
See"HP Customer Support
Troubleshooting
5-5