Creating VLANs and Assigning Access VLANs to an Interface
Trunking Theory
This section shows how to create a VLAN, give the VLAN a name, and assign interfaces to a VLAN. To focus on these basic details, this section shows examples using a single switch, so VLAN trunking is not needed.
For a Cisco switch to forward frames in a particular VLAN, the switch must be configured to believe that the VLAN exists. Additionally, the switch must have nontrunking interfaces (called access interfaces) assigned to the VLAN, and/or trunks that support the VLAN. The configuration steps for access interfaces are as follows, with the trunk configuration shown later ...
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