CHAPTER 3 | Installing the Switch
Connecting Switches i n a Stack
Figure 18: Maki ng Sta cking Co nnec ti ons
5. Select the Master unit in the stack by pressing the Master button in on only
one of the switches. Only one switch in the stack can operate as the Master,
all other units operate in slave mode. If m ore than one switch in the stack is
selected as Master, or if no switches are selected, the system will select the
unit with the lowest MAC address as the Mast er.
STACKING
T
OPOLOGIES
All units in the stack must be connected via stacking cable ( part numbers
LGB6000SC-001 or LGB6000SC-004). You can connect units in a simple
cascade configuration, connecting Down ports to Up ports, from the top unit to
the bottom unit. Using this ���line” topology, if any link or unit in the stack fails,
the stack is split and two separate segments are formed. The Stack Link LEDs
on the units that are disconnected flash to indicate that the stack link betwee n
them is not
functioning
(see
Table 2, “System Status LEDs,” on page 27).
When using line topology and a stack link failure occurs,
the
stack
reboots and a
Master unit is selected within each of the two stack segments. The Master unit
will be either the unit with the Master button depre ssed or the unit with the
lowest MAC address if the Master button is not depressed on any unit. When the
stack reboots and resumes operations, note that the IP address will be the same
for both of the stack segments. To resolve the conflicting IP addresses, you
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