Virtual LAN (VLAN) is any Broadcast Domain which has been segmented from other networks by the addition of a 4-byte 802.1Q Tag to the Ethernet Frame Header. VLANS are considered highly secure because, when properly implemented, the 802.1Q Tag is stripped prior to delivering the Frame to the end-user.

John Borhek

About: John Borhek

John Borhek (VCP 3-6.5) is the IT Director and Lead Solutions Architect at VMsources Group Inc. John has soup-to-nuts experience in Mission Critical Infrastructure and GxP systems, specializing in Datacenter Infrastructure Management (DCIM) and Operational Technology (OT) all over the United States and throughout the Americas.

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