From the course: Cisco Networking Foundations: Fundamentals of Cisco Networking

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Collision and broadcast domains

Collision and broadcast domains

From the course: Cisco Networking Foundations: Fundamentals of Cisco Networking

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Collision and broadcast domains

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- [Instructor] Earlier we discussed the concept of a collision where we have two frames on a portion of a network that only allows one frame at a time. Well, based on that discussion, let's define the term collision domain. As you see onscreen, a collision domain is a segment of our network that only supports one frame at any one time. Let's check out a few examples. When we discussed a hub, we said that it logically operated like the legacy bus topology that only allowed one frame at a time to be on a coaxial cable. That means that all ports on a hub, each of which connect out to different network devices, they all belong to the same collision domain. Even though those devices plug into different ports on a hub, logically, they're connected to one wire and therefore, we can support only one frame at a time on all of these links combined. However, with an ethernet switch, each port belongs to its own collision…

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