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GS1900 Series User’s Guide 135
CHAPTER 24
Configuration: Multicast
24.1 Overview
This section provides information for Multicast in Configuration.
Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender to 1 recipient)
or Broadcast (1 sender to everybody on the network). Multicast delivers IP packets to just a group
of hosts on the network.
24.2 IGMP
IGMP (Internet Group Management Protocol) is a network-layer protocol used to establish
membership in an IPv4 multicast group - it is not used to carry user data. Refer to RFC 1112, RFC
2236 and RFC 3376 for information on IGMP versions 1, 2 and 3 respectively.
24.2.1 The Global Screen
Use this screen to view the IGMP Global settings. Click Configuration > Multicast > IGMP to
open this screen.
Figure 116 Configuration > Multicast > IGMP
The following table describes the labels in this screen.
Table 98 Configuration > Multicast > IGMP
LABEL DESCRIPTION
IGMP Global
Snooping Status Select Enable to turn on IGMP packet snooping or Disable to turn snooping off.