24 | Chapter 4. Installation
GS752TXS Smart Switch Hardware Installation Guide

Figure 8. Installing and SFP Transceiver Module

Step 6: Installing Device as Stand-alone or Stack Master

A master-backup unit runs as a slave unit as described above. In addition, it continuously

monitors the existence and operation of the stack master. If the master unit fails, the

master-backup unit will assume the stack-master rol e (“Switchover”). In the default

configuration, the master and backup switches are assigned unit ID 1 and 2, respectively;

however, the administrator may use the Web interface to assign different unit IDs. The goal

for switchover time is under 30 seconds.

If a stacking cable fails or a stack unit is extracted in a chain topology, slave units could be

disconnected from the stack (which puts them in an ambiguous state), and they will set all

their ports to the down state.

Each unit may work in one of two modes: Stand-alone, or Stack mode. The operational mode

is determined at software boot time, and can only be changed by a unit reset. The 7-segment

stacking ID LED remains illuminated in both modes.

The device supports two stacking topologies: Ring topology or Chain topology.

Green=Link at 1G
Yellow=Link at 10/
100M
Power
Reset
ID
Fan
Stack
Master
Factory
Defaults
12345678910 11 13 15 17 19 21
12 2214 16 18 20 23 25 27 29 31 33
24 3426 28 30 32 35 37 39 41 43 45 47
36 38 40 42 44 46 48
GS752TXS
50F
49F
Green=10G Link Yellow=1G
Blink=ACT
SFP
+
52F
51F
Link/Act Mode —
25
2
7
29
3
1
33
24
3
4
26
30
32
35
3
7
39
41
4
4
7
36
38
4
0
42
44
4
6
48
GS752TXS
5
0
F
4
9
F
Gree
Gre
Green1
een
een=
Gree
ee
Green=1
Green=1
Green=1
Green=1
en=1
Gr
Green1
Green=
Green=
Green=1
een=1
1
G
Green=1
een=1
1
G
=
G
e
e
0
0
0
0GLink
G
G
0G L
GL
0G L
0GLi
Lin
Lin
k
k
k
0G
0GL
0GL
Li
in
k
nk
G Link
0
0G
G
G
L
L
L
L
Li
in
n
n
nk
0
0
G
G
Lin
0G
G
G
G
Lin
0G
G
Y
Y
Yellow
=1G
B
Blink=A
B
C
T
S
F
P
+
5
2
F
5
1
F