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Bridging/Routing Models 3-5
Figure 3-4 Bridging in the Traditional Bridging/Routing Model
In the traditional bridging/routing model, a packet is routed as follows
(see Figure 3-5):
1 The packet enters the bridge/router.
2 The bridge/router determines that the packet belongs to a recognized
routed protocol, so the packet is passed to the router.
3 The router examines the destination network address and forwards the
packet to the interface (port) connected to the destination subnet.
Figure 3-5 Routing in the Traditional Bridging/Routing Model
1
Transmitting Host
Destination Host
Interfaces (ports)
Router Bridge
2
Networks
3
Router vs. Bridge ?
1
Transmitting Host
3
Destination Host
Interfaces (ports)
Router
Bridge
2
Networks
Router vs. Bridge ?