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14 C
HAPTER
1: I
NTRODUCING
THE
S
WITCH
610
LEDs
Ta bl e 3
lists the LEDs visible on the front of the Switch, and their states
according to color. For information on using the LEDs for problem solving,
see “Checking for Correct Operation”
on page 24.
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.
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.
16954ua.book Page 14 Friday, April 30, 1999 9:39 AM