14
C
HAPTER
1: I
NTRODUCING
THE
S
WITCH
3300 SM
Table 3
LED behavior
LED
Color
Indicates
Port Status LEDs
Packet
Yellow
Packets are being transmitted/received on the port.
Off
No packets are being transmitted/received on the
port.
Status
Green
A link is present, and the port is enabled.
Green flashing
A link is present, but the port is disabled.
Off
No link is present.
Unit LEDs
1–8
Green
The Switch forms a stack with other Switch units;
the LED indicates the position of the Switch in the
stack and that a link is present. Note that although
there are eight LEDs, only four Switch units can be
stacked at present.
Off
The Switch is stand-alone.
Power/Self Test LED
Green
The Switch is powered-up.
Green flashing
The Switch is either downloading software or is
initializing (which includes running a Power On Self
Test).
Yellow
The Switch has failed its Power On Self Test.
Off
The Switch is not receiving power.
Summary of Contents for 3C16987
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Page 40: ...40 APPENDIX A SAFETY INFORMATION...
Page 44: ...44 APPENDIX B PIN OUTS...