Predicting the Contents of the MAC Address Table
As explained in Chapter 6, “Building Ethernet LANs with Switches,” switches learn MAC addresses and then use the entries in the MAC address table to make a forwarding/filtering decision for each frame. To know exactly how a particular switch will forward an Ethernet frame, you need to examine the MAC address table on a Cisco switch.
The show mac address-table EXEC command displays the contents of a switch’s MAC address table. This command lists all MAC addresses currently known by the switch. The output includes some static overhead MAC addresses used by the switch and any statically configured MAC addresses, such as those configured with the port security feature. The command also lists all dynamically ...
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