Kenwood 3750-X Hardware Installation Manual page 21

Chapter 1 Product Overview
Table 1-8
Mode LED
STACK
2
PoE
1. Only Catalyst 3750-X switches.
2. Only switches with PoE+ or UPOE ports.
Table 1-9
Port Mode
STAT
(port status)
SPEED
DUPLX
(duplex)
MAST
(data stack
master)
OL-19593-03
Port Mode LEDs (continued)
Port Mode
1
Stack member status
StackWise port status
PoE+ or UPOE port
power
Meaning of Switch LED Colors in Different Modes
Port LED Color
Off
Green
Blinking green Activity. Port is sending or receiving data.
Alternating
green-amber
Amber
10/100/1000/SFP ports
Off
Green
Single green
flash (on for
100 ms, off for
1900 ms)
Network module slots
Off
Blinking green Port is operating at up to 10 Gb/s.
Off
Green
1
Off
Green
Amber
Description
The stack member status.
The StackWise port status. See the
3750-X)" section on page
The PoE+ or UPOE port status.
Meaning
No link, or port was administratively shut down.
Link present, no activity.
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.
Port is blocked by Spanning Tree Protocol (STP) and is not
forwarding data.
After a port is reconfigured, the port LED can be amber for up to 30
seconds as STP checks the switch for possible loops.
Port is operating at 10 Mb/s.
Port is operating at 100 Mb/s.
Port is operating at 1000 Mb/s.
Port is not operating.
Port is operating in half duplex.
Port is operating in full duplex.
The switch is not the stack master.
For a standalone switch, this LED is off.
Note
The switch is the stack master.
Error during stack master election.
Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
Front Panel Description
"Stack LED (Catalyst
1-15.
1-13