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DES-7200 Configuration Guide Chapter 2 MAC Address Configuration
2-6
Figure-6 Uniform MAC Address Forward Process 1
The UserA under the Line Card1 sends the packets to the UserB. For the MAC
address for the UserB does not exist on the switch, the packets will be sent to
all line cards on the switch in broadcast form. The switch learns the address
after receiving the packets from the UserA. At this time, Line Card 1 and Line
Card 2 both receive the packets from the UserA, so they learn the MAC address
for the UserA simultaneously.
MAC address table(Line card 1)
Status VLAN MAC address Interface
Dynamic 1 00d0.f8a6.5af7 GigabitEthernet 1/1
MAC address table(Line card 2)
Status VLAN MAC address Interface
Dynamic 1 00d0.f8a6.5af7 GigabitEthernet 1/1
Figure-7 Uniform MAC address Learning: MAC address table
After receiving the packets from the UserA, the UserB sends the reply packets
to the Line Card1. Since the Line Card 1 has learned the MAC address for the
UserA, the packets will be sent to the port of UserA in the unicast form and will
not be sent to the Line Card 2.