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Figure 101 Host A sends an Ethernet frame to Host B on LAN segment 1
As shown in Figure 102, when the bridge receives the Ethernet frame on bridge interface 1, it
determines Host A is attached to bridge interface 1 and creates a mapping between the MAC
address of Host A and bridge interface 1 in its bridge table.
Figure 102 The bridge determines Host A is attached to interface 1
When Host B responds to Host A, the bridge also hears the Ethernet frame from Host B. As shown
in Figure 103,
when the frame is received on bridge interface 1, the bridge determines Host B is also
attached to bridge interface 1, and creates a mapping between the MAC address of Host B and
bridge interface 1 in its bridge table.