Dell N3200-ON Networking N-Series Switches User Guide version 6.8.0 - Page 742

Table 20-1 provides an overview of the types of VLANs that can be used to logically divide the network. Table 20-1. VLAN Assignment VLAN Assignment Port-based (Static) IP Subnet MAC-Based Protocol Dynamic Description This is the most common way to assign hosts to VLANs. The port where the traffic enters the switch determines the VLAN membership. Trunk ports are automatically members of all VLANs, unless specifically configured otherwise. Hosts are assigned to a VLAN based on their IP address. All hosts in the same subnet are members of the same VLAN. The MAC address of the device determines the VLAN assignment. This type of VLAN is useful when a host might not always connect to the network through the same port but needs to be on the same VLAN. Protocol-based VLANs were developed to separate traffic based on the Layer-2 EtherType before IP traffic became the de facto standard in the LAN. Use a protocol-based VLAN on networks where you might have a group of hosts that use IPX or another legacy protocol. With protocolbased VLANs, traffic can be separated based on the EtherType value in the frame. A data VLAN received from a RADIUS server in AccessAccept message may be dynamically created if it does not already exist. The VLAN exists for the duration of the authentication session and is removed when the session terminates, unless converted to a static VLAN. Dynamic VLANs become members of trunk ports. VLAN Tagging Dell Networking N-Series switches support IEEE 802.1Q tagging. Ethernet frames on a tagged VLAN have a 4-byte VLAN tag in the header. VLAN tagging is required when a VLAN spans multiple switches, which is why trunk ports transmit and receive only tagged frames. 742 VLANs