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Catalyst 3750-E and Catalyst 3560-E Switch Hardware Installation Guide
OL-9774-04
Chapter 1 Product Overview
Front Panel Description
Stack LED
On Catalyst 3750-E switches, 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 1-6 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 blinks green. The LEDs for ports 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.
Figure 1-6 Stack LED
When you select the Stack LED mode, the representative Stack LEDs are green when the StackWise
ports (on the switch rear panel) are up, and the representative Stack LEDs are amber when the ports are
down. The 10-Gigabit Ethernet module slot LEDs 1 and 2 show the status for StackWise ports 1 and 2,
respectively.
In Stack LED mode when all 10-Gigabit Ethernet uplink port LEDs are green, the stack is operating at
full bandwidth. If any of the10-Gigabit uplink LEDs are not green, the stack is not operating at full
bandwidth.
1 Stack member 1 3 Stack member 3
2 Stack member 2
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1
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