Allied Telesis AT-S80, User Manual

Page: 80 / 346

Chapter 7: Static Multicast Address
80 Section I: Using the Menus Interface
Static Multicast Address Overview
There are 4 ways to populate the database of a MAC address table:
ˆ
Static unicast addresses which can only be assigned to one port
ˆ
Static multicast addresses which can be assigned to multiple ports
ˆ
Broadcast addresses which are broadcast to all of the ports on a
switch
ˆ
Dynamically learned MAC addresses
If you want the MAC address table to act as a forwarding database,
configure it with static multicast MAC addresses.
The Static Multicast Address feature allows you to assign an IP address to
more than one host. This feature is used for video streaming when you
also enable IGMP snooping. For more information about configuring IGMP
snooping, see Chapter 6, “IGMP Snooping” on page 71.
For the static multicast address, the MAC addresses are prelearned. This
means that you can assign a MAC address before you create a physical
connection to a host.