Access Port vs. Trunk Port in Networking: Understanding the Differences
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Access ports and trunk ports are fundamental concepts in networking, particularly in the context of VLANs (Virtual Local Area Networks) on Ethernet switches. Access ports connect end devices, such as computers and printers, and carry traffic for a single VLAN. In contrast, trunk ports connect switches to other switches or routers, carrying traffic for multiple VLANs simultaneously through the use of tagging protocols like IEEE 802.1Q. This article provides an in-depth comparison of access and trunk ports, their configurations, uses, and best practices for deployment in various network scenarios. Understanding the roles of these ports is crucial for network segmentation, security, and overall performance optimization.