From the course: Cisco CCNP Security SCOR v1.1 (350-701) Cert Prep

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Storm control

Storm control

From the course: Cisco CCNP Security SCOR v1.1 (350-701) Cert Prep

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Storm control

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- [Instructor] Storm control is another Layer 2 security feature found in our Cisco Catalyst switches. A traffic storm occurs when we have packets flooding the local area network in an excessive manner, and that causes the degradation of our network performance. This can be a unicast storm, a multicast storm, or most typically what comes to mind is a broadcast storm. That's what we commonly think of when we talk about traffic storms. The storm control feature monitors incoming traffic in one-second intervals, and it compares that to the acceptable traffic storm levels that we configure. When we designate an acceptable level, we can do that in bits per second, or BPS, we can do that in packets per second, or PPS, or we can use a percentage of the interface bandwidth. Storm control uses threshold values to determine when a storm is taking place. We have what's called a rising threshold and a falling threshold. The rising threshold is the upper limit that we are willing to accept, either…

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