International Datacasting SuperFlex SFX2100 Series, Руководство пользователя

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IGMP
The Internet Group Management Protocol (IGMP V2 – RFC 2236) is an Internet Protocol
that provides the means for a computer to report its multicast group membership to
adjacent routers, allowing it to “tune-in” to multicast transmissions destined for that group.
IP Multicasting allows a host receiver to send content to one or more other computers that
have identified themselves as being interested in receiving that content, known as a
multicast group. Multicasting can be used for such applications as broadcasting streaming
media, sending course content in distance learning applications, or delivering financial
information to branch offices in enterprise applications.
IGMP operates in networks where the receiver is directly connected to the subnet. The
receiver issues IGMP queries and receives IGMP membership reports directly.
When the IGMP submenu item is selected under Data Delivery, the IGMP page is
displayed for a selected Ethernet network interface. A sample page is shown in Figure 4-16
for the Net1 (eth0) Ethernet interface.
Figure 4-16 IGMP Page for Net1
Aside from the Common Menu Items, the following menu items are available:
Menu Item Description
Show IGMP
<interface> Selecting this button will always return you back to the IGMP page
for the selected Ethernet network interface, as shown in Figure 4-16.