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VLAN Membership Types and differences between static VLAN and dynamic VLAN

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Two types of VLAN membership methods exists and they are Static and Dynamic.

The difference between static and dynamic VLANs are given below.

• Static VLANs: In a static VLAN, the network administrator creates a VLAN and then assigns switch ports to the VLAN. Static VLANs are also called port-based VLANs. The association with the VLAN does not change until the administrator changes the port assignment. End-user devices become the members of VLAN based on the physical switch port to which they are connected.

The ports on a single switch can be assigned multiple VLANs. Even though two devices are connected to different ports on a same switch, traffic will not pass between them if the connected ports are on different VLANs. We need a layer 3 device (typically a Router) to enable communication between two VLANs.

• Dynamic VLANs: In a dynamic VLAN, the switch automatically assigns the port to a VLAN using information from the user device like MAC address, IP address etc. When a device is connected to a switch port the switch queries a database to establish VLAN membership. A network administrator must configure VLAN database of a VLAN Membership Policy Server (VMPS).

Dynamic VLANs support instant movability of end devices. When we move a device from a port on one switch to a port on another switch, the dynamic VLANs will automatically configure the membership of the VLAN.

              Jajish Thomason Google+
Related Topics
• What is Virtual Local Area Network (VLAN)
• Advantages of VLAN
• How to create and name static VLAN
• How to view VLAN information using "show vlan" command
• Types of VLAN connection links - Trunk Links and Access Links
• VLAN Frame Tagging
• Inter-Switch Link (ISL) VLAN Tagging
• IEEE 802.1Q VLAN Tagging
• What is Native VLAN
• How to configure VLAN trunk link and native VLAN
• How to configure and assign a switch access port to a VLAN
• What is VLAN Trunking Protocol (VTP)
• What is VLAN Trunking Protocol (VTP) Domain
• VLAN Trunking Protocol (VTP) Modes
• VLAN Trunking Protocol (VTP) Advertisement Messages
• How to configure VLAN Trunking Protocol (VTP)
• How to view VLAN Trunking Protocol (VTP) information
• What is VLAN Trunking Protocol (VTP) Pruning
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