Cisco 7000 Series Hardware Installation And Maintenance Manual page 265

The state of each B/A pair of LEDs indicates the status of one type of three possible station
connections: dual attachment station (DAS), single attachment station (SAS), or dual homed. The
states of the FIP LED combinations, and the meanings of each are described and illustrated in
Table B-1.
Figure B-9 FIP LEDs
Table B-1 FIP LED States—Refer to Figure B-9
1
LED Pattern State
B A DAS
– – Both LEDs off
X X
X X
O O Both LEDs on
X X
X X
O – B on and A off
X X
X X
– O B off and A on
X X
X X
B A SAS
X X
– – Both LEDs off
X X
X X
O – B on and A off
X X
X X
– O B off and A on
X X
B A Dual Homed
Indication
Both LEDs off means not connected.
Not connected
Through A
Wrap B
Wrap A
Not connected
Single attachment B (PHY A shut down)
Single attachment A (PHY B shut down)
Interface Processor LEDs
Reading LED Indicators B-7