Allied Telesis x950 Series Installation Manual page 48

Chapter 2: XEM2 Ethernet Line Cards
48
Table 15. Link and Activity LEDs for the SFP Ports on the XEM2-8XSTm
State
Off
Line Card (Continued)
Description
Possible causes of this state are listed
here:
- The transceiver has not established a
link with another network device.
- The LEDs are turned off. To turn on the
LEDs, use the eco-friendly button.