1-12
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 LED
MODE
SYST
RPS
MASTR
STAT
DUPLX
SPEED
PoE
STACK
49
51
X2-1
X2-2
50
52
37
38
399
40
41
42
43
44
45
46
47
48
37X
47X
38X
48X
25
26
27
28
29
30
31
32
33
34
35
36
25X
35X
26X
36X
13
14
15
16
17
18
19
20
21
22
23
24
13X
23X
14X
24X
1
2
3
4
5
6
7
8
9
10
11
12
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
37
38
399
40
41
42
43
44
45
46
47
48
37X
47X
38X
48X
25
26
27
28
29
30
31
32
33
34
35
36
25X
35X
26X
36X
13
14
15
16
17
18
19
20
21
22
23
24
13X
23X
14X
24X
1
2
3
4
5
6
7
8
9
10
11
12
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
37
38
399
40
41
42
43
44
45
46
47
48
37X
47X
38X
48X
25
26
27
28
29
30
31
32
33
34
35
36
25X
35X
26X
36X
13
14
15
16
17
18
19
20
21
22
23
24
13X
23X
14X
24X
1
2
3
4
5
6
7
8
9
10
11
12
1X
11X
2X
12X
Catalyst 3780
SERIES
PoE-48
13X
1
2
3
4
5
6
7
8
9
10
11
12
1X
11X
2X
12X
1
2
3
158106
1 Stack member 1 3 Stack member 3
2 Stack 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.
