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16 CHAPTER 1: INTRODUCING THE SUPERSTACK 3 SWITCH 3870
Module LEDs
Packet Yellow Packets are being transmitted/received on the port.
Off No packets are being transmitted/received on the port.
Status Green The Module is installed and supported and the Link
Status has been determined.
Yellow The Module is installed and supported but there is no
link or an indeterminate link status.
Yellow flashing The Module is installed but not supported or has failed
POST.
Off The Module is not installed.
Unit LED
Green The Switch is stacked and the position within the stack
is displayed.
Off The Switch is not stacked.
Power/Self Test LED
Green The Switch is powered-up and operating normally.
Green flashing The Switch is either downloading software or is
initializing (which includes running a Power On Self
Test).
Yellow The Switch is faulty.
Off The Switch is not receiving power or there is a fault
with the Power Supply unit.
Fault LED
Red The Switch and/or the PSU and/or the Module are
above critical temperature but below critical shut down
temperature. Fans are operating normally.
Off The Switch, PSU and the Module are below critical
temperature. One or more fans have failed.
LED Color Indicates
DUA1745-0AAA02.book Page 16 Monday, August 9, 2004 11:51 AM