TAILIEUCHUNG - CNNA3-Chapter 3

In traditional switched LANs, the physical topology is closely related to the logical topology. • Generally, workstations must be grouped by their physical proximity to a switch. • To communicate among LANs, each segment must have a separate port on the backbone device or a connection to a common backbone. | Chapter 3 Virtual Local Area Networks (VLANs) Part I Virtual Local Area Networks Introducing VLANs Defining VLANs In traditional switched LANs, the physical topology is closely related to the logical topology. Generally, workstations must be grouped by their physical proximity to a switch. To communicate among LANs, each segment must have a separate port on the backbone device or a connection to a common backbone. Separate Broadcast Domains Defining VLANs VLANs provide segmentation based on broadcast domains. VLANs logically segment switched networks based on the functions, project teams, or applications of the organization regardless of the physical location or connections to the network. Communication among VLANs still require a router. BUT, only one physical connection will handle all routing. Separate Broadcast Domains Defining VLANs VLANs are created to provide segmentation services traditionally provided by physical routers in LAN configurations. They address: Scalability .

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