Proxim AP-4000 User Manual page 70

Advanced Configuration
Interfaces
Trunk Mode
Trunk mode works as a filter. Trunk links provide VLAN identification for frames travelling between switches. Once this
mode is enabled, the frames received from the WDS, Mesh or wireless ports are filtered and compared with the trunk
tables entries. The device percolates the incoming frames comparing with the trunk table data and forwards to the
respective ports. The trunk table is configurable on the Access Point. The frames with any mismatched tags are dropped
at this point. To distinguish between the traffic flows, a trunk port must mark the frames with special tags as they pass
between the switches.
Mixed Mode
Mixed mode is the combination of both the Access mode and the Trunk mode. All devices connected to the Ethernet
except for one device have to be VLAN aware. The Access Point puts this device into Access Mode and works as Trunk
Mode for other devices. The frames an Access Point receives are either untagged or tagged. For all incoming untagged
frames, Access mode rules are applied. The frames are tagged with the Access VLAN ID and are forwarded to the
respective ports. Trunk mode works when an Access Point receives tagged frames. The tagged frames are compared
with the Trunk table entries and are forwarded if it matches the entries, otherwise dropped.
NOTE: In Mixed Mode, Access VLAN ID should not be present in Trunk table.
AP-4000/4000M/4900M User Guide
70