If a VLAN is not known to a switch, that switchĬannot transfer traffic across any of its ports for that VLAN. Use of a Layer 3 device for communications. VLANs are created on Layer 2 switches to control broadcasts and enforce the Several VLANs are reserved, and some can be used for internal purposes VLANs have a variety of configurable parameters, including name, type, Cisco switches have two ranges of VLANs, the normal range and VLANs are assigned numbers for identification within and between VLANs are defined on a switch in an internal database known as the VLANs are broadcast domains defined within switches to allowĬontrol of broadcast, multicast, unicast, and unknown unicast within a Layer 2
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