Chapter 5
| Port Connections
Connecting Switches in a Stack
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Figure 27 illustrates a ring-topology stacking configuration.
When the stack is initially powered on, the Master unit is designated as unit 1 for a
ring topology. For a line topology, the stack is simply numbered from top to
bottom, with the first unit in the stack designated at unit 1. This unit identification
number appears on the Stack Unit ID LCD on the front panel of the switch. For more
information on stack configuration, refer to the CLI Reference Guide and Web
Management Guide.
To connect up to eight switches in a stack, perform the following steps:
1. Plug one end of a stack cable in the right port of the top unit.
2. Plug the other end of a stack cable into the left port of the next unit.
3. Repeat steps 1 and 2 for each unit in the stack. Form a simple chain starting at
the right port on the top unit and ending at the left port on the bottom unit
(stacking up to 8 units).
4. (Optional) To form a wrap-around topology, plug one end of a stack cable into
the right port on the bottom unit and the other end into the left port on the
top unit.
Figure 27: Making Stack Connections
5. To complete the stack configuration, you must use the switch CLI or web
interface to enable stacking on the SFP+ ports for each switch in the stack (refer
to the CLI Reference Guide and Web Management Guide). You can also select the
stack Master in the stack.
6. Reboot each switch in the stack to start stack operation.
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