Compaq SW3324, SW3323, SW3322 manual Appendix C, VLANs and Frame Tagging

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C-1

Appendix C

Virtual LANs (VLANs)

VLANs and Frame Tagging

The SW3322/SW3323/SW2234 supports IEEE 802.1Q-compliant VLANs. This capability provides a highly efficient architecture for establishing VLANs within a network and for controlling broadcast/multicast traffic between workgroups. Central to this capability is an explicit frame tagging approach for carrying VLAN information across interconnected network devices.

With frame tagging, a short tag is appended to the beginning of every frame that crosses the network. The tag identifies which virtual LAN the frame belongs to as well as the relative priority of the frame In Figure C-1, the workstations attached to the first switch are members of the same two VLANs as the workstations attached to the second switch. The 802.1Q tag carries the VLAN information between the two switches.

Figure C-1Two Switch VLAN Configuration

Compaq SW3322/SW3323 Dual-Speed Switch User Guide