Cabletron Systems STH-24 manual Functions of the FNB receive LED are listed in Table

LANVIEW LEDs

The functions of the two System Status LEDs, System Management Bus (SMB) and the CPU, are listed in Table 4-1.

Table 4-1. System Status LEDs (SMB and CPU)

LED Color	State	Description
Green	Functional	Fully operational.
Yellow	Crippled	Not fully operational (i.e., one bad port).
Yellow/Green	Booting	Blinks yellow and green while booting.
Red	Reset	Normal power-up reset.
Red (Flashing)	Failed	Fatal error has occurred.
Off	Power off	Module powered off.

The functions of the FNB receive LED are listed in Table 4-2.

	Table 4-2. FNB Receive LEDs
LED Color	State
Red	No link, Port disabled
Red (Flashing)	Link, Port disabled
Green	Link, No activity, Port enabled
Yellow (Flashing)	Activity (Flashing rate indicates rate of activity).
Off	No activity

The functions of the FNB transmit LED are listed in Table 4-3.

	Table 4-3. FNB Transmit LEDs
LED Color	State
Red	Port disabled
Red (Flashing)	Fault or Error (Flashing rate indicates rate)
Yellow (Flashing)	Port in standby state
Green (Flashing)	Activity (Flashing rate indicates rate of activity).
Off	No activity

4-2