LG-Ericsson iPECS ES-4526G, Installation Manual

Page: 57 / 98

C
HAPTER
3
| Installing the Switch
Connecting Switches in a Stack
– 57 –
ES-4550G / ES-4526G
Figure 24: Making Stacking Connections
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 more 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 Master.
S
TACKING
T
OPOLOGIES
All units in the stack must be connected via stacking cable. 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 between them is not functioning (see
Table 3, System Status LEDs, on
page 29 .)