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Catalyst 3750-E and Catalyst 3560-E Switch Hardware Installation Guide
OL-9774-03
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 L ED
MODE
SYST
RPS
MASTR
STAT
DUPLX
SPEED
PoE
STACK
49
51
X2-1
X2-2
50
52
3738 399 40 41 42 43 44 45 46 47 48
37X 47X
38X 48X
2526 27 28 29 30 31 32 33 34 35 36
25X 35X
26X 36X
1314 15 16 17 18 19 20 21 22 23 24
13X 23X
14X 24X
12345678910 1112
1X 11X
2X 12X
Catalyst 3780
SERIES
PoE-48
MODE
SYST
RPS
MASTR
STAT
DUPLX
SPEED
PoE
STACK
49
51
X2-1
X2-2
50
52
3738 399 40 41 42 43 44 45 46 47 48
37X 47X
38X 48X
2526 27 28 29 30 31 32 33 34 35 36
25X 35X
26X 36X
1314 15 16 17 18 19 20 21 22 23 24
13X 23X
14X 24X
12345678910 1112
1X 11X
2X 12X
Catalyst 3780
SERIES
PoE-48
MODE
SYST
RPS
MASTR
STAT
DUPLX
SPEED
PoE
STACK
49
51
X2-1
X2-2
50
52
3738 39940 41 42 43 44 45 46 47 48
37X 47X
38X 48X
2526 27 28 29 30 31 32 33 34 35 36
25X 35X
26X 36X
1314 15 16 17 18 19 20 21 22 23 24
13X 23X
14X 24X
12345678910 1112
1X 11X
2X 12X
Catalyst 3780
SERIES
PoE-48
13X
12345678910 11 12
1X 11X
2X 12X
1
2
3
158106
1Stack member 1 3Stack member 3
2Stack member 2
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.