Hardware Diagnostic Tests; Testing The Switch By Resetting It; Checking The Switch Leds; Checking Console Messages - HP Aruba 8325 Series Installation And Getting Started Manual

Hardware diagnostic tests

Testing the switch by resetting it

If you believe the switch is not operating correctly, you can reset the switch to test its circuitry and operating code.
To reset a switch, either:
• unplug and plug in the power cord (power cycling)
• press the Reset button on the front of the switch
• reset the switch via the management console's boot system command.
Power cycling the switch and pressing the Reset button both cause the switch to reset. These reset processes
also cause any network traffic counters to be reset to zero, and cause the System Up Time timer to reset to
zero.

Checking the switch LEDs

See "Diagnosing with the LEDs" for information on interpreting the LED patterns.

Checking console messages

Useful diagnostic messages may be displayed on the console screen when the switch is reset. As described in
chapter 2 under step 6, connect a PC running a VT-100 terminal emulator program to the switch's Console Port
and configure it to run at 115200 baud, and with the other terminal communication settings shown in "10. Connect
the network cables". Then, when you reset the switch, note the messages that are displayed. Additionally, you
can check the switch event log, which can be accessed from the console using the show events command.

Testing switch-to-device network communications

You can perform the following communication tests to verify the network is operating correctly between the switch
and any connected device that can respond correctly to the communication test.
• Link Test—a physical layer test that sends IEEE 802.2 test packets to any device identified by its MAC
address
• Ping Test—a network layer test used on IP networks that sends test packets to any device identified by its IP
address
These tests can be performed through the switch console interface from a terminal connected to the switch or
through a Telnet connection, or from the switch's web browser interface.

Testing end-to-end network communications

Both the switch and the cabling can be tested by running an end-to-end communications test—a test that sends
known data from one network device to another through the switch. For example, if you have two PCs on the
network that have LAN adapters between which you can run a link-level test or Ping test through the switch, you
can use this test to verify that the entire communication path between the two PCs is functioning correctly. See
your LAN adapter documentation for more information on running a link test or Ping test.
58 Aruba 8325 Switch Installation and Getting Started Guide