Alvarion BreezeACCESS VL 5.4, Системное руководство

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Operation and Administration
5-43
VLAN Link Type
The VLAN Link Type parameter enables defining the functionality of the
VLAN-aware capability of the unit.
The available options are Hybrid Link, Trunk Link and Access Link (Access
Link option is available only in SUs).
The default selection is
Hybrid Link .
Access Link (SU only)
Access Link transfers frames while tagging/untagging them since all
devices connected to the unit are VLAN-unaware. Thus, the unit cannot
transfer tagged frames.
Table 5-7 summarizes the functionality of the data port for an Access link.
Table 5-7 : VLAN Data Port Functionality – Access Link
Action Data Port (SU)
Accept from Ethernet Untagged frames
Accept from Wireless Tagged frames, matching VID-D
Tag Insert VID-D, PID-D (to wireless)
Tag Remove Yes (to Ethernet)
Table Legend
:
♦
VID-D: VLAN ID-Data
♦
PID-D
:
VLAN Priority-Data
Trunk Link
Trunk Link transfers only tagged frames, since all devices connected to the
unit are VLAN-aware: Only tagged data frames received on the Ethernet or
wireless link ports are forwarded.
WARNING
It is not recommended that you configure a unit as a Trunk Link with the
VLAN ID - Management parameter set at 65535 , as it does not forward any ‘NO VLAN’
management frames to its other port making it impossible to manage devices connected
behind the unit that are also configured with ‘NO VLAN’.