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C-1
Compaq SW3322/SW3323 Dual-Speed Switch User Guide
Writer: Fran Spragens Project: Virtual Lans (VLANs) Comments:
File Name:3324_c.doc Last Saved On:3/16/99 11:47 AM
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-1 Two Switch VLAN Configuration