Cisco Systems 2900 Series XL manual Port Mode Port LED Color Meaning

Chapter 1 Product Overview

100BASE-FX Ports

Table 1-7	Meanings of Port Status LED Colors for Different Modes on Catalyst 2912 XL, 2924C XL,
2924 XL, 2924MF XL, and 2924M XL Switches
Port Mode		Port LED Color	Meaning
STAT		Off	No link.
(port status)
		Solid green	Link present.
		Flashing green	Activity. Port is transmitting or receiving data.
		Alternating	Link fault. Error frames can affect connectivity, and errors such as
		green-amber	excessive collisions, CRC errors, and alignment and jabber errors
			are monitored for a link-fault indication.
		Solid amber	Port is not forwarding. Port was disabled by management or an
			address violation or was blocked by Spanning Tree Protocol (STP).
			Note After a port is reconfigured, the port LED can remain
			amber for up to 30 seconds as STP checks the switch for
			possible loops.
UTL		Green	The LEDs display backplane utilization on a logarithmic scale.
(utilization)			If all port LEDs are green, the switch is using 50 percent or more
			of its total bandwidth capacity. If the right-most LED is amber, the
			switch is using less than 50 percent of its total bandwidth. If the
			LED to the left of the right-most LED is amber, the switch is using
			less than 25 percent of its total capacity, and so on.
			See Figure 1-7for details.
FDUP		Off	Port is operating in half duplex.
(port duplex)		Green	Port is operating in full duplex.
100		Off	Port is operating at 10 Mbps.
(port speed)
		Green	Port is operating at 100 Mbps.

	Catalyst 2900 Series XL Hardware Installation Guide
78-6461-03		1-15