Break the ring topology of a stack

Starting from the cable connecting to the port of a larger Stack ID on the master switch, the [(n/2)+1]th cable is the loop-breaking cable, to which the ports are connected are blocked.
In (n/2)+1, n indicates the number of switches in the stack. The value must be an integer; if not, round it off.
For example, if a stack consists of four switches, n is equal to 4. (n/2) + 1 = 3. Starting from the cable connecting to the Stack 2 port on the master switch DUT 1, the third cable is the loop-breaking cable. That is, the Stack 1 port on Switch 4 and the Stack 2 port on Switch 2 are blocked.

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