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18 CHAPTER 1: INTRODUCING THE SWITCH 4500 FAMILY
RPS LED (3CR17571-91 and 3CR17572-91 only)
Green AC and RPS supply connected.
Yellow AC failed or not connected. RPS supply is OK.
Off There is no RPS supply connected.
10BASE-T/100-TX Port LEDs
Speed Green A high speed (100 Mbps) link is present, blinking off for
every packet received or transmitted.
Yellow A low speed (10 Mbps) link is present, blinking off for every
packet received or transmitted.
Yellow Flashing The port has failed POST.
Off No link is present.
Duplex (3CR17571-91 and 3CR17572-91 only)
Green Full duplex, blinking off for every packet received or
transmitted.
Yellow Half duplex, blinking off for every packet received or
transmitted.
Yellow flashing The port has failed POST.
Off No link is present.
PoE (3CR17571-91 and 3CR171572 only)
Green Power is being delivered to the port.
Green flashing Port power has exceeded limit or is unable to supply power
due to unit being over budget.
Yellow PoE error, no power supplied on port.
Yellow flashing The port has failed post.
Off No power is being delivered.
1000BASE-X SFP Port LEDs
Speed Green A high speed (1000 Mbps) link is present.
Yellow Flashing Port failed POST.
Off No link is present.
Duplex (3CR17571-91 and 3CR17572-91 only)
Green Full duplex packets are being transmitted/received on the
port.
Yellow Half duplex packets are being transmitted/received on the
port.
Yellow flashing Port failed POST.
Off No link is present.
LED Color Indicates