Ethernet bridging Chapter 1 Product description
phn-1115_006v000
1-36
Sep 2010
Protocol model
Ethernet bridging behavior at each end of the wireless link is equivalent to a two-port,
managed, transparent MAC bridge where the two ports are:
• Ethernet Port
• Wireless Port
Frames are transmitted at the Wireless port over a proprietary point-to-point circuit-
mode link layer between ends of the link. Ethernet frames received at the Ethernet
port, or generated internally within the management agent, are encapsulated within a
lightweight MAC layer for transmission over the wireless link.
Protocol layers involved in bridging between Ethernet and wireless interfaces are
shown in Figure 1-17. Pro
t
ocol layers involved in bridging between external interfaces
and the management agent are shown in Figure 1-18. In
these figures, the layers have
the meanings defined in IEEE 802.1Q-2005.
Figure 1-17 Protocol layers between Ethernet and wireless interfaces
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