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Stack Connection Suggestions
In Figure 3-2, stack member switches are connected through service ports that are added to logical stack ports. A logical stack port can contain 1 to 16 stack member ports.
- It is recommended that you add at least two stack member ports to each logical stack port to improve stack link bandwidth and reliability.
- If two switches need to set up a stack, connect them in a chain topology. If three or more switches need to set up a stack, the ring topology is recommended, which is more reliable than the chain topology.
Stack setup just requires ordinary service cables instead of dedicated stack cables.
- All types of ports except GE ports on switches can be used for stack connections, such as 10GE, 40GE, and 100GE ports.
Optical ports can be connected using high-speed cables, AOC cables, or optical modules+fibers. Electrical ports can be connected using Category 6, Category 6A, or Category 7 cables.
- DAD can be performed on any type of port, and cables can be selected according to the port type.
For details about stack ports and cables, see What Ports Can Be Used to Set Up a Stack and What Cables Can Be Used to Set Up a Stack.