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Figure 285 Forwarding

• When Host A sends an Ethernet frame to Host B, as Host B is on the same LAN segment with Host

A, the bridge filters the Ethernet frame instead of forwarding it, as shown in Figure 286.

Figure 286 Filtering

• When Host A sends an Ethernet frame to Host C, if the bridge does not find a MAC-to-interface

mapping about Host C in its bridge table, the bridge forwards the Ethernet frame to all interfaces

except the interface on which the frame was received, as shown in Figure 287.

Host A

Host B

Host C Host D

LAN segment 2

LAN segment 1

Bridge

Bridge interface 1

Source address Destination address

00e0.fcbb.bbbb 1

00e0.fccc.cccc 2

00e0.fcaa.aaaa 1

00e0.fcdd.dddd 2

MAC address Interface

Bridge table

00e0.fcaa.aaaa 00e0.fccc. cccc

00e0.fcaa.aaaa 00e0.fccc.cccc

MAC address: 00e0.fccc.cccc

MAC address: 00e0.fcaa.aaaa

MAC address: 00e0.fcbb.bbbb

MAC address: 00e0.fcdd.dddd

Source address

Destination address

Bridge interface 2

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