Operation Manual – MAC Address Table Management
H3C S3100 Series Ethernet Switches
Chapter 1 MAC Address Table
Management
1-2
1.1.2 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)
Figure 1-2 MAC address table entry of the switch (1)
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.
To Next Page
Loading...
Need help?
General