Checking The Switch Leds; Checking Console Messages; Testing Twisted-Pair Cabling; Testing Switch-To-Device Network Communications - HPE Aruba Networking CX 6200 Series Installation And Getting Started Manual

Unplug and plug in the power cord (power cycling).
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Press the Reset button on the front of the switch.
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Reboot the switch via the management console's
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Power cycling the switch and pressing the Reset button both cause the switch to perform its power-on
self test, which almost always will resolve any temporary operational problems. 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 Switch and Port LEDs on Front of the Switches
LED behaviors.

Checking console messages

Useful diagnostic messages may be displayed on the console screen when you reset a switch. Connect a
PC running a VT-100 terminal emulator program or a standard VT-100 terminal to the switch console
port. Configure the terminal to run at 115200 baud, and with the other terminal communication
settings.
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
main menu.

Testing twisted-pair cabling

Network cables that fail to provide a link or provide an unreliable link between the switch and the
connected network device may not be compatible with the IEEE 802.3 Type 10Base-T, 100Base-TX, or
1000Base-T standards. The twisted-pair cables attached to the switch must be compatible with the
appropriate standards. To verify your cable is compatible with these standards, use a qualified cable
test device.

Testing switch-to-device network communications

The following communication tests can verify that 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
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address.
Ping Test: A network layer test used on IP networks that sends test packets to any device identified
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by its IP address.
These tests can be performed through the switch console interface. Use a terminal connected directly
to the switch or through a Telnet connection, or from the switch web browser interface. For more
information, see the Fundamentals Guide for your switch.
These tests can also be performed from an SNMP network management station running a program that
can manage the switch, like AirWave.

Testing end-to-end network communications

Both the switch and the cabling can be tested by running an end-to-end communications test. This is 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
command.
boot system
for information on interpreting the LED patterns and
command, or from the console
show log
Troubleshooting | 60