Discussion
You have two switches connected together with two crossover cables for redundancy, and STP is disabled. Which of the following will happen between the switches?
Answer: C
Correct answer: Broadcast storms will occur on the switched network.
Two links between the same pair of switches with STP disabled is a loop. A broadcast is flooded out of both, returns on the other, and is flooded again, multiplying until the links and the switch CPUs saturate. The switches do not load-balance - that requires an EtherChannel, which bundles the links into one logical interface so that no loop exists.
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