Stackable switches can be connected in a daisy-chain topology. This is a ring topology with one of the links disconnected, inoperative, or disabled. A daisy chain can be created when a link fails or a node reboots in a ring topology, but the daisy chain topology is not recommended for normal operation.
Connect your stack nodes in a ring topology, not a daisy-chain topology, for normal operation.
In Daisy Chain Topology, the nodes delineated as the active topology are operating in a daisy-chain configuration, even though there is physically a ring connection in the stack.
You might need to use a daisy chain topology while adding a new node, removing a node, or joining two stacks.
If you are using a daisy chain topology, the possibility of a dual primary condition increases. Before you create a daisy chain topology, read "Managing a Dual Primary Situation" in the Switch Engine 32.1 User Guide .