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Quick Start Manual

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Green=Link at 1G
Yellow=Link at 10/
100M
Power
Reset
ID
Fan
Stack
Master
Facto ry
Defaults
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GS752TXS
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Green=10G Link Yellow=1G
Blink=ACT
SFP
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Link/Act Mode —
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GS728TXS/GS752TXS Smart Switch
Figure 9. Installing an SFP transceiver module
Step 6: Install Device as Standalone or Stack Master
A master-backup unit runs as a slave unit. (For more information, see Stacking on page 7.) In
addition, it continuously monitors the existence and operation of the stack master. If the
master unit fails, t
he master-backup unit assumes the stack-master role (switchover). In the
default configuration, the master and backup switches are assigned unit ID 1 and 2,
respectively; however, the administrator can 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 extra
cted 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 can work in one of two modes: standalone, or stack mode. The operational mode is
d
etermined at software boot time, and can be changed only by a unit reset. The 7-segment
Stack ID LED remains lit in both modes.
The device supports two stacking topologies: ring topo
logy or chain topology. (The figure
shows the GS752TXS Smart Switch; however, the GS728TXS Smart Switch is connected in
the same manner.)
Figure 10. Stacking topologies