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Cisco IE 4000 Switch Hardware Installation Guide
Cisco IE 4000 Switch Hardware Installation Guide
Chapter 1 Product Overview
LEDs
Port Status LEDs
Each port and SFP uplink slot has a status LED, as shown in Figure 1-4 and Figure 1-4.
Dual-Purpose Port LEDs
The Dual Purpose LEDs show how the port is being used (Ethernet or SFP module). The LED colors
have the same meanings as for the Port Status LEDs, page 1-12.
PoE Status LED
The PoE STATUS LEDs are located on the front panel, next to the PoE ports (models equipped with PoE
ports).The LEDs display the functionality and status of the adjacent PoE ports.
Color System Status
Off No link.
Solid green Link present.
Blinking green Activity. Port is sending or receiving data.
Alternating green-
amber
Link fault. Error frames can affect connectivity, and errors such as excessive
collisions, CRC errors, and alignment and jabber errors are monitored for a link-
fault indication.
Solid amber Port is not forwarding. The port was disabled by management, an address vio-
lation, or STP.
Note After a port is reconfigured, the port LED can remain amber for up to 30
seconds while STP checks the switch for possible loops.
Color PoE Status
Off PoE is off. If the powered device is receiving power from a non-PoE power
source, the port LED is off even if the powered device is connected to the switch
port.
Green PoE is on. The port LED is green only when the PoE port is providing power.
Alternating green
and amber
PoE is denied because providing power to the powered device will exceed the
switch power capacity.
Flashing amber PoE is off due to a fault.
Caution Noncompliant cabling or powered devices can cause a PoE port fault.
Use only standard-compliant cabling to connect Cisco pre-standard
IP Phones and wireless access points or IEEE 802.3af-compliant
devices. You must remove any cable or device that causes a PoE fault.
Amber PoE for the port is disabled. (PoE is enabled by default.)
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