Cisco WS-C3750X-24T-L Hardware Installation Guide - Page 51

Mode LED, Port Mode, Description, LED Color, Meaning, Table 2-4, Port Mode LEDs

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Chapter 2 Product Overview Front Panel Description Table 2-4 Port Mode LEDs Mode LED STAT DUPLX Port Mode Port status Port duplex mode SPEED STACK Port speed Stack Member Status StackWise Port Status Description The port status. This is the default mode. The port duplex mode: full duplex or half duplex. Note The 10/100/1000 ports operate only in full-duplex mode. The port operating speed: 10, 100, or 1000 Mbps. The stack member status. The StackWise port status. See the "Stack LED" section on page 2-12 for more information. Table 2-5 Meaning of LED Colors in Different Modes on the Switch Port Mode STAT (port status) DUPLX (duplex) LED Color Meaning Off No link, or port was administratively shut down. Green Link present. Flashing green Activity. Port is transmitting 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. Amber Port is blocked by Spanning Tree Protocol (STP) and is not forwarding data. 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. Flashing amber Port is blocked by STP and is transmitting or receiving packets. Off Port is operating in half duplex. Green Port is operating in full duplex. 78-15136-02 Catalyst 3750 Switch Hardware Installation Guide 2-11

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2-11
Catalyst 3750 Switch Hardware Installation Guide
78-15136-02
Chapter 2
Product Overview
Front Panel Description
Table 2-4
Port Mode LEDs
Mode LED
Port Mode
Description
STAT
Port status
The port status. This is the default mode.
DUPLX
Port duplex mode
The port duplex mode: full duplex or half duplex.
Note
The 10/100/1000 ports operate only in full-duplex
mode.
SPEED
Port speed
The port operating speed: 10, 100, or 1000 Mbps.
STACK
Stack Member Status
StackWise Port Status
The stack member status.
The StackWise port status. See the
“
Stack LED
”
section on
page 2-12
for more information.
Table 2-5
Meaning of LED Colors in Different Modes on the Switch
Port Mode
LED Color
Meaning
STAT
(port status)
Off
No link, or port was administratively shut down.
Green
Link present.
Flashing green
Activity. Port is transmitting 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.
Amber
Port is blocked by Spanning Tree Protocol (STP) and is not
forwarding data.
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.
Flashing amber
Port is blocked by STP and is transmitting or receiving packets.
DUPLX
(duplex)
Off
Port is operating in half duplex.
Green
Port is operating in full duplex.