H3C Technologies H3C S3600 Series Switches - Manual (Page 234)

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Introduction to MAC Address Learning
MAC address table entries can be updated and maintained through the following two ways:
z Manual configuration
z MAC address learning
Generally, the majority of MAC address entries are created and maintained through MAC address
learning. The following describes the MAC address learning process of a switch:
1) As shown in Figure 1-1 , User A and User B are both in VLAN 1. When User A communicates with
User B, the packet from User A needs to be transmitted to Ethernet 1/0/1. At this time, the switch
records the source MAC address of the packet, that is, the address MAC-A of User A to the MAC
address table of the switch, forming an entry shown in Figure 1-2 .
Figure 1-1 MAC address learning diagram (1)
Eth1/0/1
Eth1/0/3 Eth1/0/4
User A
User B User C
Figure 1-2 MAC address table entry of the switch (1)