VLAN Tagging

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What Does VLAN Tagging Mean?

VLAN tagging is a method through which more than one VLAN is handled on a port.
VLAN tagging is used to tell which packet belongs to which VLAN on the other
side. To make recognition easier, a packet is tagged with a VLAN tag in the Ethernet
frame. Independent logical systems can be formed accurately with the help of
the VLAN tagging inside a physical network itself. Individual domains can be
created with the help of this VLAN tagging system.


Techopedia Explains VLAN Tagging

tagging is performed by the putting the VLAN ID into a header to identify which
network it is present in. This helps in determining which interface or
broadcast area the information packet needs to be sent to in order to receive
the right information. The switches need to be configured beforehand for
working properly with the process of VLAN tagging. With this system, multiple
broadcast systems can be segregated into individual domains. Bridging
traffic can be forwarded with the use of this system. Clients and information
can be organized, configured and grouped logically. Overall, the functionality
of the system is optimized.


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Margaret Rouse
Technology Expert
Margaret Rouse
Technology Expert

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.