VLANs divide broadcast domains in a LAN environment.
On layer-3 switches it is accomplished by the creation of layer-3 interfaces (SVIs).
[1] SVI or VLAN interface, is a virtual routed interface that connects a VLAN on the device to the Layer 3 router engine on the same device.
SVIs are generally configured for a VLAN for the following reasons: SVIs advantages include: An SVI can also be known as a Routed VLAN Interface (RVI) by some vendors.
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