H3C S3100-52P Operation Manual page 235

Operation Manual – MAC Address Table Management
H3C S3100-52P Ethernet Switch
2) After learning the MAC address of User A, the switch starts to forward the packet.
Because there is no MAC address and port information of User B in the existing
MAC address table, the switch forwards the packet to all ports except Ethernet
1/0/1 to ensure that User B can receive the packet.
User B
Eth1/0/4
Figure 1-3 MAC address learning diagram (2)
3) Because the switch broadcasts the packet, both User B and User C can receive
the packet. However, User C is not the destination device of the packet, and
therefore does not process the packet. Normally, User B will respond to User A, as
shown in
1/0/4, the switch records the association between the MAC address of User B and
the corresponding port to the MAC address table of the switch.
Figure 1-4 MAC address learning diagram (3)
User C
Eth1/0/3
Eth1/0/1
User A
Figure 1-4. When the response packet from User B is sent to Ethernet
1-3
Chapter 1 MAC Address Table
Management