Cisco Catalyst 2950 Hardware Installation Manual page 68

Front-Panel Description
Table 2-5 Port Mode LEDs
Mode LED Port Mode
STAT Port status
1
UTIL Switch utilization
2
DUPLX Port duplex mode
SPEED Port speed
1. A Catalyst 2950 LRE switch does not have a UTIL LED.
2. A Catalyst 2950 LRE switch does not have a DUPLX LED.
Table 2-6 Meaning of Port LED Colors in Different Modes for Non-LRE Switches
Port Mode
STAT (port status)
Catalyst 2950 Desktop Switch Hardware Installation Guide
2-22
Each port has a port status LED, also called a port LED. These LEDs, as a group
or individually, display information about the switch and the individual ports. The
port modes (see Table
Description
The port status. This is the default mode.
The bandwidth in use by the switch.
The port duplex mode: half duplex or full duplex.
The port operating speed: 10 or 100 Mbps for 10/100 ports
and 10, 100, or 1000 Mbps for 10/100/1000 ports.
When you change the port mode, the meanings of the port LED colors change.
Table 2-6 explains how to interpret these colors for the non-LRE switches.
Table 2-7 explains how to interpret the colors for the LRE switches. The port
LEDs are off when the MODE is set to SPEED.
Color Meaning
Off No link.
Solid green Link present.
Flashing green Activity. Port is sending or receiving data.
Alternating Link fault. Error frames can affect connectivity, and errors such
green-amber as 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, an
address violation, or Spanning Tree Protocol (STP).
Note
2-5) determine the type of information displayed.
After a port is reconfigured, the port LED can remain
amber for up to 30 seconds while STP checks the switch
for possible loops.
Chapter 2 Overview
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