Sysadmin blog Next year will see the 20th anniversary of IEEE 802.1Q, the standard that defines the tagged VLAN for Ethernet networks. Despite it being two decades since modern VLANs started being ...

Virtual Local Area Networks, or VLANs, serve as a critical computing technology designed for effective network traffic management. These are subsets within a Local Area Network (LAN) that partition ...

To begin, we must have a more formal definition of what a LAN is. LAN stands for local area network. Hubs and switches usually are thought of as participating in a single LAN. Normally, if you connect ...

As the title shows, this post is about private VLANs (PVLAN). This topic shows on VCAP exams, but also on VCP based exams. So if you're studying for VCAP or VCP, this article might be your interest.

An illustration of a magnifying glass. An illustration of a magnifying glass.

VLANs break a physical LAN into several logical broadcast domains. Each LAN station hears traffic sent by its own VLAN but receives nothing from stations in other VLANs -- not even from those ...