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 yellow:

The device has failed its Power On Self Test (POST) and you should contact your supplier for advice.

A link is connected, but the 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.

    The Gigabit link must be enabled or disabled on both sides. If the two sides 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. Verify by entering the following command:

    show ports configuration

On power-on, some I/O modules do not boot:

Check the output of the show power budget command to see if all power supplies display the expected input voltage. Also refer to the section Power Management Guidelines for more detailed information about power management.

ERR LED on the Management Switch Fabric Module (MSM) turns amber:

Check the syslog message for “critical” software errors. To reset the ERR LED and clear the log, use the following command and reboot the switch:

clear log static

If you continue to see “critical” software errors or the ERR LED is still amber after issuing the clear log static command and a switch reboot, contact Extreme Networks Technical Support for further assistance.

Status LED on the I/O module turns amber:

Check the syslog message for a related I/O module error. If the error is an inserted I/O module that conflicts with the software configuration, use one of the following commands to reset the slot configuration:

clear slot

configure slot slot module module_type

Otherwise, contact Extreme Networks Technical Support for further assistance.

ENV LED on the MSM turns amber:

Check each of the power supplies and all of the fans. Additionally, you display the status in the show power and show fans displays.

Predictive Failure LED on the AC power supply blinks amber:

Check the current status of the power supply. If the speed of both fans is above 2000 RPM, the AC power supply unit (PSU) is operating normally and no failure is imminent. To check and view the health of the installed PSU, use the following command:

show power {ps_num} {detail}

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 the power, 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.