Chapter 2 Overview
Front-Panel Description
2-24
Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-05
Table 2-7 Meaning of Port LED Colors in Different Modes for the LRE Switches
Port Mode Color Meaning
STAT (port status) Off No link.
Solid green Link present.
Note The LRE port LED turns green approximately 30 seconds
after the LRE port detects a connection to an LRE CPE.
Flashing 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 A link is established on a nonassigned LRE profile, or a port is
not forwarding.
If a port is not forwarding, it was disabled by management, an
address violation, 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.
DUPLX
(half or full duplex)
Off Port is operating in half duplex.
Green Port is operating in full duplex.
SPEED 10/100/1000 ports
1
2
1. On an LRE switch, the LEDs for Uplink Port 1 and Uplink Port 2 correspond either to the SFP module port or to the
10/100/1000 port, depending on which is active.
2. If an LRE switch senses connections to both ports, by default, the switch chooses the fiber-optic connection over the copper
connection.
Off Port is operating at 10 Mbps.
Green Port is operating at 100 Mbps.
Flashing green Port is operating at 1000 Mbps.
SFP modules
1
2
Off Port is operating at 10 Mbps
Green Port is operating at 100 Mbps
Flashing green Port is operating at 1000 Mbps
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