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Placing Units On
Top of Each Other
Stacking Units
If the Switch units are free-standing, up to eight units can be placed one
on top of the other. If you are mixing a variety of SuperStack
and Hub units, the smaller units must be positioned at the top.
If you are placing Switch units one on top of the other, you must use the
self-adhesive rubber pads supplied. Apply the pads to the underside of
each Switch, sticking one in the marked area at each corner. Place the
Switch units on top of each other, ensuring that the pads of the upper
unit line up with the recesses of the lower unit.
Up to four Switch 4200 Family units can be stacked together and then
treated as a single manageable unit with one IP address. Any
combination of Switch 4200 Family units is allowed in a single stack. The
units are connected together via the 10/100/1000BASE-T ports on the
front of the unit as shown in
the port marked with 'up' is connected to the port marked with 'down'
on the unit above. Cable lengths of between 14 cm (5.5 in) and
100 m (328 ft) can be used for stacking.
Figure 6 Stacking example
1
25
2
26
3
27
4
28
5
29
6
30
7
31
8
3
15
16
5
6
18
1
13
2
14
4
17
7
19
8 20
1
13
2
14
3
15
4
16
5
17
6
18
7
19
8 20
1
13
2
14
3
15
4
16
5
17
6
18
7
19
8 20
The unit LEDs will display the unit number in the stack, from 1 at the
bottom to 4 at the top.
3Com recommends that when you add a new unit to a stack, you should
first initialize it to factory default settings.
Any Switch 4200 unit can be added to the stack, including the Switch
26-Port (3C17300A), the Switch 50-Port (3C17302A) and the Switch
28-Port (3C17304A). You must install the latest software version on all
units in the stack.
Placing Units On Top of Each Other
Figure
6. Starting from the base of the stack,
32
9
33
10
34
11
35
12
36
13
37
14
38
15
39
16
40
9
10 22
11 23
12 24
21
Power/
Self Test
1
25 / Up
26 / Down
2
3
Alert
4
Unit
9
21
10 22
11 23
12 24
Power/
Self Test
1
25 / Up
26 / Down
2
3
Alert
4
Unit
9
21
10 22
11 23
12 24
Power/
Self Test
1
25 / Up
26 / Down
2
3
Alert
4
Unit
®
3C17302A Superstack 3 Switch 4200 50-Port
17
41
18
42
19
43
20
44
21
45
22
46
23
47
24 48
Power/
Self Test
1
2
Alert
3
4
Unit
3C17304A Superstack 3 Switch 4200 28-Port
27
28
27
28
3C17304A Superstack 3 Switch 4200 28-Port
27
27
28
28
3C17300A Superstack 3 Switch 4200 26-Port
23
3 Switch
50
49
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