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Figure 17: VLAN traffic flow
1. A PC sends an untagged frame on access port 10 (Control VLAN) on WNS 1. The frame is sent to
other access ports on the Control VLAN (access port 9).
2. WNS 1 tags the frame with VLAN ID = 4 and Priority = 5 and sends it through the trunk ports to WNS
2.
3. WNS 2 receives the tagged frame, and identifies the frame belonging to the Control VLAN.
4. WNS 2 removes the tag and sends the frame to all ports on the Control VLAN (access ports 9 and 10).
5. If WNS 1 receives multiple frames, they are tagged and sent via trunk ports to WNS 2.
6. WNS 2 receives the frames and prioritises distribution.
4.1.3 Port Allocation
Physical ports on the WNS can be configured to be either a trunk port or access port using the web browser
interface or editing site configuration files when Trivial File Transfer Protocol (TFTP) is used. The WNS
default configuration has ports 1-4 and 9-12 allocated as trunk ports. Ports 1-4 are usually connected to
other WNS units, and ports 9-12 are connected to WAPs or other PoE devices. For more information on
configuring ports and VLAN membership, see
Configuring the VLAN Port Map on page 65.
4.2 VLANs and Wireless Networks
The WNS can have up to four wireless Service Set Identifiers (SSIDs) per WAC. Each SSID is associated
with a single VLAN and functions as an access port on that VLAN. An example of a wireless network
is shown in
Figure 18: An example of VLAN and wireless networks and described below.
Wireless Network Switch User Manual 45 Revision A
Understanding VLANs