LAN Technologies - MAC Address Table and Gratuitous ARP

Classification of MAC Address Entries

• Dynamic MAC address entries
• Static MAC address entries
• Blackhole MAC address entries

Classification of secure MAC address

• Secure dynamic MAC address
• Secure static MAC address
• Sticky MAC address

Configuring MAC Address Anti-flapping

• Increases the MAC address learning priority of an interface.
• Prohibits MAC address entry overriding between interfaces with the same priority.

Gratuitous ARP functions:

• Checks for IP address conflicts
• Advertises a new MAC address
• Notifies other devices of master/backup switchover in a Virtual Router Redundancy Protocol (VRRP) group

Source: https://ilearningx.huawei.com/