Figure - Cisco Catalyst 3750 Hardware Installation Manual

10/100 and 10/100/1000 Ports
Table 1-7
Port Mode
STAT
(port status)
DUPLX
(duplex)
SPEED
STACK
(stack member)
1. The PoE LED is only on the Catalyst 3750-24PS, 3750G-24PS, 3750-48PS, 3750G-48PS, 3750G-24WS-S25 and
Stack LED
The stack LED shows the sequence of member switches in a stack. Up to nine switches can be members
of a stack. The first nine port LEDs show the member number of a switch in a stack.
the LEDs on the first switch, which is stack member number 1. For example, if you press the Mode
Catalyst 3750 Switch Hardware Installation Guide
1-20
Meaning of LED Colors in Different Modes on the Switch (continued)
Port LED Color
Off
Green
Flashing green Activity. Port is sending or receiving data.
Alternating
green-amber
Amber
Flashing amber Port is blocked by STP and is sending and receiving packets.
Off
Green
10/100 and 10/100/1000 ports
Off
Green
Flashing green Port is operating at 1000 Mbps.
SFP module ports
Off
Green
Flashing green Port is operating at 1000 Mbps.
XENPAK port
Off
Flashing green Port is operating at up to 10 Gbps.
Off
Flashing green Stack member number.
Green
3750G-24WS-S50 switches.
Meaning
No link, or port was administratively shut down.
Link present.
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 remain amber
Note
for up to 30 seconds as STP checks the switch for possible
loops.
Port is operating in half duplex.
Port is operating in full duplex.
Port is operating at 10 Mbps.
Port is operating at 100 Mbps.
Port is operating at 10 Mbps.
Port is operating at 100 Mbps.
When installed in Catalyst 3750 switches, 1000BASE-T
Note
SFP modules can operate at 10, 100, or 1000 Mbps in
full-duplex mode or at 10 or 100 Mbps in half-duplex mode.
Port is not operating.
No stack member corresponding to that member number.
Member numbers of other stack member switches.
Chapter 1 Product Overview

Figure 1-19

shows
OL-6336-06