Extreme Networks 200 Series - Manual (Page 317)

Summit 200 Series Switch Installation and User Guide 233
E
Troubleshooting
If you encounter problems when using the switch, this appendix might be helpful. If you have a
problem not listed here or in the release notes, contact your local technical support representative.
LEDs
Power LED does not light:
Check that the power cable is firmly connected to the device and to the supply outlet.
On powering-up, the MGMT LED lights amber:
The device has failed its Power On Self Test (POST) and you should contact your supplier for advice.
A link is connected, but the Port Status LED does not light:
Check that:
• All connections are secure.
• Cables are free from damage.
• The devices at both ends of the link are powered-up.
• Both ends of the Gigabit link are set to the same autonegotiation state.
Both sides of the Gigabit link must be enabled or disabled. It the two are different, typically the side
with autonegotiation disabled will have the link LED lit, and the side with autonegotiation enabled
will not be lit. The default configuration for a Gigabit port is autonegotiation enabled. This can be
verified by entering the following command:
show port config
Switch does not power up:
All products manufactured by Extreme Networks use digital power supplies with surge protection. In
the event of a power surge, the protection circuits shut down the power supply. To reset, unplug the
switch for 1 minute, plug it back in, and attempt to power up the switch.
If this does not work, try using a different power source (different power strip/outlet) and power cord.