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Troubleshooting and Maintenance Manual for LightPulse Adapters Page 18
LED Reference Information
Firmware Operation and Port Activity LEDs
Emulex adapters have a POST test. Each port has a set of green and yellow LEDs (visible through
openings in the adapter's mounting bracket) that indicate the conditions and results of the POST.
• Green = firmware operation
• Yellow = port activity
Adapter LEDs also identify possible problems. For more information on LED states, see Table 1 on
page 20.
LEDs can help you locate:
• Bad cables
• Bad transceivers
• Bad switches or hub ports
LEDs can help you determine whether:
• The switch or hub is on
• The driver is loaded
• The driver reset the adapter
Common LED States
Although the adapter LED has many possible states, the three most common are:
• Normal, that is, the link is up
• Link-down or adapter waiting
• Heart-beat indication
Normal Link Up
A normal link up means that the driver is loaded and talking to the switch. Everything is operational.
1 Gb/s link up:
• For 1Gb/s adapters, a normal link up state is indicated with a solid green LED and a slow
blinking (1 Hz) yellow LED.
• For 2 Gb/s adapters, a solid green LED and a slow blinking yellow LED.
• For 4 Gb/s adapters, a solid green LED and a single blinking yellow LED.
2 Gb/s link up:
• For 2 Gb/s adapters, a solid green LED and a fast blinking yellow LED.
• For 4 Gb/s adapters, a solid green LED and a double blinking yellow LED.
• For 8 Gb/s adapters, a solid green LED and a fast double blinking yellow LED.