A state in which a message that has been broadcast across a network results in even more responses, and each response results in still more responses in a snowball effect. A severe broadcast storm can block all other network traffic, resulting in a network meltdown. Broadcast storms can usually be prevented by carefully configuring a network to block illegal broadcast messages.
It's Alarming: Broadcast and Multicast Storms In addition to helping you troubleshoot network problems, network analyzers can help you detect detrimental conditions on your company's network
The Broadcast Storm Blues Broadcast storms are not to take lightly, they steal precious network bandwidth and can cause havoc on many machines.