Cisco 3750G-12S Hardware Installation Guide - Page 29

Stack LED, The PoE LED is on the Catalyst 3750-24PS, 3750G-24PS, 3750G-24WS-S25 - 48ps

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Chapter 1 Product Overview 10/100 and 10/100/1000 Ports Stack LED Table 1-6 Meaning of LED Colors in Different Modes on the Switch (continued) Port Mode Port LED Color Meaning SPEED 10/100 and 10/100/1000 ports Off Port is operating at 10 Mb/s. Green Port is operating at 100 Mb/s. Blinking green Port is operating at 1000 Mb/s. SFP module ports Off Port is operating at 10 Mb/s. Green Port is operating at 100 Mb/s. Blinking green Port is operating at 1000 Mb/s. Note When installed in Catalyst 3750 switches, 1000BASE-T SFP modules can operate at 10, 100, or 1000 Mb/s in full-duplex mode or at 10 or 100 Mb/s in half-duplex mode. XENPAK port Off Port is not operating. Blinking green Port is operating at up to 10 Gb/s. STACK Off No stack member corresponding to that member number. (stack member) Blinking green Stack member number. Green Member numbers of other stack member switches. 1. The PoE LED is only on the Catalyst 3750-24PS, 3750G-24PS, 3750-48PS, 3750G-48PS, 3750G-24WS-S25 and 3750G-24WS-S50 switches. If your switches are stacked and you press the Mode button on any one of the switches in the stack, all the switches in the stack change to display the same selected mode. For example, if you press the mode button on the stack master to display SPEED, all the other switches in the stack also display SPEED. The PoE LED is on the Catalyst 3750-24PS, 3750G-24PS, 3750-48PS, 3750G-48PS, 3750G-24WS-S25 and 3750G-24WS-S50 switches. Even if PoE mode is not selected on the switches, this LED still shows PoE problems if they are detected. The Catalyst 3750G-S-SD does not have a PoE 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. Figure 1-19 shows the LEDs on the first switch, which is stack member number 1. For example, if you press the Mode button and select Stack, the LED for port 1 flashes green. The LEDs for port 2 and 3 are solid green, as these represent the member numbers of other switches in the stack. The other port LEDs are off because there are no more members in the stack. OL-6336-10 Catalyst 3750 Switch Hardware Installation Guide 1-19

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1-19
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-10
Chapter 1
Product Overview
10/100 and 10/100/1000 Ports
If your switches are stacked and you press the Mode button on any one of the switches in the stack, all
the switches in the stack change to display the same selected mode. For example, if you press the mode
button on the stack master to display SPEED, all the other switches in the stack also display SPEED.
The PoE LED is on the Catalyst 3750-24PS, 3750G-24PS, 3750-48PS, 3750G-48PS, 3750G-24WS-S25
and 3750G-24WS-S50 switches. Even if PoE mode is not selected on the switches, this LED still shows
PoE problems if they are detected. The Catalyst 3750G-S-SD does not have a PoE LED.
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.
Figure 1-19
shows
the LEDs on the first switch, which is stack member number 1. For example, if you press the Mode
button and select Stack, the LED for port 1 flashes green. The LEDs for port 2 and 3 are solid green, as
these represent the member numbers of other switches in the stack. The other port LEDs are off because
there are no more members in the stack.
SPEED
10/100 and 10/100/1000 ports
Off
Port is operating at 10 Mb/s.
Green
Port is operating at 100 Mb/s.
Blinking green
Port is operating at 1000 Mb/s.
SFP module ports
Off
Port is operating at 10 Mb/s.
Green
Port is operating at 100 Mb/s.
Blinking green
Port is operating at 1000 Mb/s.
Note
When installed in Catalyst 3750 switches, 1000BASE-T
SFP modules can operate at 10, 100, or 1000 Mb/s in
full-duplex mode or at 10 or 100 Mb/s in half-duplex mode.
XENPAK port
Off
Port is not operating.
Blinking green
Port is operating at up to 10 Gb/s.
STACK
(stack member)
Off
No stack member corresponding to that member number.
Blinking green
Stack member number.
Green
Member numbers of other stack member switches.
1.
The PoE LED is only on the Catalyst 3750-24PS, 3750G-24PS, 3750-48PS, 3750G-48PS, 3750G-24WS-S25 and
3750G-24WS-S50 switches.
Table 1-6
Meaning of LED Colors in Different Modes on the Switch (continued)
Port Mode
Port LED Color
Meaning