Operation Manual – MAC Address Table Management
H3C S3610&S5510 Series Ethernet Switches
Chapter 1 MAC Address Table
Management Configuration
1-1
Chapter 1 MAC Address Table Management
Configuration
When configuring MAC address table management, go to these sections for
information you are interested in:
z
Introduction to MAC Address Table
z
Configuring MAC Address Table Management
z
Displaying and Maintaining MAC Address Table Management
z
MAC Address Table Management Configuration Example
Note:
This manual covers only static, dynamic and blackhole MAC address table
management. For the management of multicast MAC address table management, refer
to
Multicast Protocol Configuration
.
1.1 Introduction to MAC Address Table
A switch maintains a MAC address table for frame forwarding. Each entry in this table
contains the MAC address of a connected device, to which port this device is
connected and to which VLAN the port belongs.
A MAC address table consists of two types of entries: static and dynamic. Static entries
are manually configured and never age out. Dynamic entries can be manually
configured or dynamically learned and may age out.
The following is how a switch learns a MAC address after it receives a frame from a port,
port A for example:
1)
Check the frame for the source MAC address (MAC-SOURCE for example), and
consider frames with destination MAC address MAC-SOURCE be forwarded
through port A.
2) Look up the MAC address table for an entry corresponding to the MAC address
and do the following:
z
If an entry is found for the MAC address, update the entry.
z
If no entry is found, add an entry containing the MAC address and port A.
When receiving a frame destined for MAC A, the switch then looks up the MAC address
table and forwards it from port A.
