![]() The green fields have the same meaning as in a usual Ethernet packet, the VLAN Ethernet Type is 0x8100. However, a VLAN packet on an Ethernet will typically look like this: Destination MAC address There are several different packet formats defined see the standard for details. See CaptureSetup/VLAN for various details how to capture VLAN traffic. VLAN's are "working together" with several IEEE 802 technologies (Ethernet, WLAN, Token Ring, …). VLAN is specified by the IEEE in the IEEE 802.1Q standard. After that, the switch will forward incoming VLAN tagged packets (see below) only to the network devices which are in the specific VLAN. Then he will attach each port on each participating (Ethernet) switch with one or several of these ID's. This way, the network traffic of a VLAN group is only visible to the network devices which are members of this group.Ī specific VLAN (group) is distinguished by a unique 12 bit VLAN ID.Ī network administrator will have to logically group the network devices together and provide a unique VLAN ID for each of these groups. A Virtual Bridged Local Area Network is used to logically group network devices together, which share the same physical network. ![]()
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