A10E/A28E/A28F Configuration Guide
2 Ethernet
This chapter describes the configuration and principle of Ethernet features, also provides
some related configuration instances, including the following chapters:
MAC address table
VLAN
QinQ
VLAN mapping
Interface protection
Port mirroring
Layer 2 protocol transparent transmission
2.1 MAC address table
2.1.1 Introduction
The MAC address table records mappings between MAC addresses and interfaces. It is the
basis for an Ethernet device to forward packets. When the Ethernet device forwards packets
on Layer 2, it searches for the forwarding interface according to the MAC address table,
implements fast forwarding of packets, and reduces broadcast traffic.
Item of MAC address table contains the below information:
Destination MAC address
Destination MAC address related interface ID
Interface belonged VLAN ID
Flag bits
The A10E/A28E supports showing MAC address information by device, interface, or VLAN.
MAC address forwarding modes
When forwarding packets, based on the information about MAC addresses, the A10E/A28E
adopts following modes: