Dell Force10 S2410-01-10GE-24P SFTOS Configuration Guide - Page 207

14 VLANs This chapter describes the use of SFTOS to create IEEE 802.1Q Virtual LANs (VLANs); it contains the following major sections: • Introduction to VLAN Configuration on page 207 • Important Points to Remember on page 208 • Implementing VLANs on page 209 • VLAN Mode Commands on page 210 • Configuration Task List for VLANs on page 211 • Adding a LAG to a VLAN on page 215 • Creating a Routed VLAN on page 217 • GARP and GVRP on page 218 • Creating an IP Subnet-based VLAN on page 223 • Configuring a Private Edge VLAN (PVLAN) on page 223 • Configuring a Native VLAN on page 224 • Configuring a VLAN Tunnel (DVLAN or VLAN-Stack) on page 229 • Displaying VLAN Information on page 233 Introduction to VLAN Configuration Virtual LAN (VLAN) support in SFTOS conforms to the IEEE 802.1Q specification, allowing a network to be logically segmented without regard to the physical location of devices on the network-one physical network becomes multiple logical networks. These logical networks may, or may not, correspond to subnets. While maintaining Layer 2 forwarding speed, network segmentation provides: • Better administration • Better security • Better management of multicast traffic Adding Virtual LAN (VLAN) support to a Layer 2 switch offers some of the benefits of both bridging and routing. Like a bridge, a VLAN switch forwards traffic based on the Layer 2 header, which is fast, and like a router, it partitions the network into logical segments, which provides better administration, security and management of multicast traffic. VLANs | 207