Using the BayStack 450 10/100/1000 Series Switch1-32 302401-D Rev 00IEEE 802.1Q VLAN WorkgroupsBayStack 450 switches support up to 64 port-based VLANs with 802.1Q taggingavailable per port. Ports are grouped into broadcast domains by assigning them tothe same VLAN. Frames received in one VLAN can only be forwarded withinthat VLAN, and IP Multicast frames and unknown unicast frames are floodedonly to ports in the same VLAN.Setting up virtual LANs (VLANs) is a way to segment networks to increasenetwork capacity and performance without changing the physical networktopology (Figure 1-15). With network segmentation, each switch port connects toa segment that is a single broadcast domain. When a switch port is configured tobe a member of a VLAN, it is added to a group of ports (workgroup) that belongto one broadcast domain.The BayStack 450 switch allows you to assign ports to VLANs using the consoleor TELNET; VLAN assignment is not currently available through SNMP. You canassign different ports (and therefore the devices attached to these ports) todifferent broadcast domains. This feature allows network flexibility because youcan reassign VLANs to accommodate network moves, additions, and changes,eliminating the need to change physical cabling.Figure 1-15. Port-Based VLAN ExampleBayStack 450-24TswitchVLAN 1 VLAN 2BS45009Akombk.book Page 32 Tuesday, June 29, 1999 3:25 PM
