Cabletron Systems FDDI manual Twisted A-A, B-B

					Chapter 4: Troubleshooting
		Table 4-3 Link LEDs (Continued)
A	P		S	B	State
Green	Off		Green	Green	THRU B, MAC on Secondary,
					Primary Bypasses Board
Green	Yellow		Green	Green	THRU B, MAC on Secondary,
					No MAC on Primary
Green	Yellow		Off	Green	THRU, No MAC on Primary,
					Secondary Bypasses Board
Green	Off		Yellow	Green	THRU, No MAC on Secondary,
					Primary Bypasses Board
Green	Green		Red	Yellow	WRAP A, MAC on Primary
Green	Yellow		Red	Yellow	WRAP A, No MAC on Primary
Yellow	Green		Red	Green	WRAP B, MAC on Primary
Yellow	Yellow		Red	Green	WRAP B, No MAC on Primary
Green	Green		Red	Green	WRAP AB, MAC on Primary
Green	Off		Off	Green	BYPASS Primary & Secondary
Green	Red		Red	Green	TWISTED A-A, B-B
Yellow	Off		Off	Yellow	PCM did not complete, Not
					Active
Red	Off		Off	Red	Ports Disabled

7F06-02 FDDI SmartSwitch Interface Module User’s Guide 4-3