Nortel Networks 450 manual Table C-3 BASE-SX MDA Components, Phy

Using the BayStack 450 10/100/1000 Series Switch

Table C-3. 1000BASE-SX MDA Components

Item	Label	Description
1	Link	Communication link LEDs (green):
		On: Valid communications link.
		Off: The communications link connection is bad or there is no connection to
		this port.
		Blinking: The corresponding port is management disabled.
2	PHY	Phy status LEDs (green):
	(or)
	Phy Select
		On: The corresponding Phy port is active.
		Off: The corresponding Phy port is in backup mode or there is no
		connection to this port.
3	Activity	Port activity LEDs (green):
		Blinking: Indicates network activity level for the corresponding port. A high
		level of network activity can cause LEDs to appear to be on continuously.
4		1000BASE-X SC port connectors.

C-8 302401-D Rev 00