Visit http://www.thebryantadvantage.com/Tutorials.htm for over 300 additional Cisco certification tutorials, Video Practice Exams, and much more to help you earn your CCNA and CCNP! In today's Three-Minute Tutorial, we'll take a look at why VLANs sometimes remain on a Cisco switch when you think you've erased the entire switch - and how to truly get rid of VLANs and initialize your switch.