Dave Twinam is manager, engineering, enterprise solutions engineering for Cisco Systems Inc., San Jose, Calif.
Editor's Note: When this
article was printed, Bob Beliles was Cisco's senior manager, market
management, physical security. He now is the vice president of business
development at Hirsch Electronics, Santa Ana, Calif.
Virtual local-area networks (VLANs) provide a logical separation of video surveillance and other physical security information from other network applications.When properly used and configured, IP networks deliver formidable security protection.