Operation Manual – MAC Address TableH3C S7500 Series Ethernet Switches Chapter 1 MAC Address Table Management1-4Task RemarksConfiguring a MAC Address Entry RequiredSetting the Aging Time for MAC Address Entries OptionalSetting the Maximum Number of MAC Addresses a Port can Learn OptionalDisabling MAC Address Learning OptionalConfiguring MAC Address Learning Synchronization BetweenBoard Chips OptionalSetting the Processing Method for Specific Packets Optional1.2.2 Configuring a MAC Address EntryYou can add, modify, or remove one MAC address entry, remove all the MAC addressentries (unicast MAC addresses only) concerning a specific port, or remove a specifictype of MAC address entries (dynamic or static).Follow these steps to add a MAC address entry:To do… Use the command… RemarksEnter system view system-view —Add a MACaddress entrymac-address { static | dynamic }mac-address interface interface-typeinterface-number vlan vlan-idRequiredCaution:For a MAC address entry to be added, the port specified by the interface keyword mustbelong to the VLAN specified by the vlan keyword in the command. Otherwise, theentry cannot be added.1.2.3 Setting the Aging Time for MAC Address EntriesSetting aging time properly helps implement effective MAC address aging. The agingtime that is too long or too short results in a large amount of broadcast packetswandering across the network and decreases the performance of the switch.z If the aging time is too long, excessive invalid MAC address entries maintained bythe switch may fill up the MAC address table. This prevents the MAC addresstable from varying with network changes in time.
