By default, in order for users in different VLANs to communicate, inter-VLAN routing must be employed. This can be done using a one-armed-router, also referred to as a router-on-a-stick, by using sub-interfaces on the router. Alternatively, and more commonly, Multilayer switches, such as the Cisco Catalyst 3750, 4500, and 6500 series switches, are used in the network. These switches have the capability to both route and switch. Inter-VLAN routing is a core concept and will be described in detail later in this guide.
VLAN hopping attacks are methods in which an attacker . . .
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