Netgear M5300-28G3 Software Administration Manual - Page 16
VLANs, Virtual LANs
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2. VLANs 2 Virtual LANs This chapter provides the following examples: • Create Two VLANs on page 17 • Assign Ports to VLAN2 on page 19 • Create Three VLANs on page 20 • Assign Ports to VLAN3 on page 22 • Assign VLAN3 as the Default VLAN for Port 1/0/2 on page 24 • Create a MAC-Based VLAN on page 25 • Create a Protocol-Based VLAN on page 28 • Virtual VLANs: Create an IP Subnet-Based VLAN on page 30 • Voice VLANs on page 33 • Private VLANs on page 43 • Assign Private-VLAN Types (Primary, Isolated, Community) on page 45 • Configure Private-VLAN Association on page 47 • Configure Private-VLAN Port Mode (Promiscuous, Host) on page 48 • Configure Private-VLAN Host Ports on page 49 • Map Private-VLAN Promiscuous Port on page 51 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. Like a router, it partitions the network into logical segments, which provides better administration, security, and management of multicast traffic. A VLAN is a set of end stations and the switch ports that connect them. You can have different reasons for the logical division, such as department or project membership. The only physical requirement is that the end station and the port to which it is connected both belong to the same VLAN. Each VLAN in a network has an associated VLAN ID, which appears in the IEEE 802.1Q tag in the Layer 2 header of packets transmitted on a VLAN. An end station might omit the tag, or the VLAN portion of the tag, in which case the first switch port to receive the packet can either reject it or insert a tag using its default VLAN ID. A given port can handle traffic for more than one VLAN, but it can support only one default VLAN ID. Chapter 2. VLANs | 16