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Cisco LAN Switching Fundamentals by Basir Sakandar - CCIE No. 6040, David Barnes - CCIE No. 6563

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Understanding Legacy LAN Segment

In a VLAN environment, a user can be situated physically anywhere in the network, and still be part of a group of users that have the same requirements such as IP addressing and specific network privileges. In legacy networks, hosts with similar network requirements had to be on the same LAN segment. On the other hand, VLANs are logical and not bound to any physical location.

In legacy networks, users connected to a hub, which may have been connected to some kind of bridge or router if wide-area connectivity was required (see Figure 4-1). Multiple hubs were interconnected to allow more users on the same segment.

Figure 4-1. Multiple Hubs Connected to a Router or Bridge

This type of network enabled a department ...

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