This article provides a demonstration with VLAN configuration on a Cisco 2950 switch. Two switches are configured with VLANs and trunk ports so that devices on each switch can communication via their respective VLANs.
Introduction
Please see the following article for basic information on VLANs. These examples shown in the video below are specific to Cisco IOS. There is also information the same VLAN configuration on HP Procurve switches. The the video below (full screen is suggested to read the text).