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Using the BayStack 450 10/100/1000 Series Switch

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302401-D Rev 00

IEEE 802.1Q VLAN Workgroups

BayStack 450 switches support up to 64 port-based VLANs with 802.1Q tagging

available per port. Ports are grouped into broadcast domains by assigning them to

the same VLAN. Frames received in one VLAN can only be forwarded within

that VLAN, and IP Multicast frames and unknown unicast frames are flooded

only to ports in the same VLAN.

Setting up virtual LANs (VLANs) is a way to segment networks to increase

network capacity and performance without changing the physical network

topology (Figure 1-15

). With network segmentation, each switch port connects to

a segment that is a single broadcast domain. When a switch port is configured to

be a member of a VLAN, it is added to a group of ports (workgroup) that belong

to one broadcast domain.

The BayStack 450 switch allows you to assign ports to VLANs using the console

or TELNET; VLAN assignment is not currently available through SNMP. You can

assign different ports (and therefore the devices attached to these ports) to

different broadcast domains. This feature allows network flexibility because you

can reassign VLANs to accommodate network moves, additions, and changes,

eliminating the need to change physical cabling.

Figure 1-15. Port-Based VLAN Example

BayStack 450-24T

switch

VLAN 1 VLAN 2

BS45009A

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