(Revised 8/3/2009) Page 130 of 138VLAN Configuration ExamplesA VLAN is an administratively configured LAN segment that limits the traffic in multiple broadcast domains. Instead ofphysically reconnecting a device to a different LAN, network administrators can accomplish this task by configuring aVLAN compliant switch to create logical network segments.Tagged VLAN allows switch segmentation to span across multiple managed switches. This type of VLAN is ideal forLANs that consist of various types of communication groups such as Office LANs, Controls Systems, and IPCameras. When used properly, it will effectively isolate two or more groups from each other in a logical manner. Thismeans that Broadcast, Multicast, and Unicast frames in one VLAN will not interfere with another isolated VLAN group.The examples in this section are shown as configured on a 708TX switch, but the 7018 series may be configuredsimilarly with the additional ports.Example 1 – Basic understanding of port-based VLANsReceivingPort #Tagged VIDin packetDestinationAddressTransmittingPort #sNotesTX1 Untagged MAC on port TX2 TX2 Unicast TrafficTX1 Untagged Unknown MAC TX2 Floods VLAN 2TX1 VID 4 MAC on port TX2 -- Packet DiscardedTX3 Untagged MAC on port TX5 TX5 Unicast TrafficTX3 Untagged Unknown MAC TX4-TX8 Floods VLAN 1TX3 VID 4 MAC on port TX6 -- Packet Discarded
