GS1900 Series User’s Guide
77
CHAPTER 13
Monitor: Multicast
13.1 Overview
This section provides information for Multicast in Monitor.
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.
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.
13.1.1 What You Can Do in this Chapter
•The IGMP screen (Section 13.2 on page 77) displays Vlan, statistics, group, and router.
13.2 IGMP
Use this screen to view Switch various multicast features.
13.2.1 Vlan
Use this screen to view the Switch’s IGMP vlan. Click Monitor > Multicast > IGMP > Vlan to
access this screen.
Figure 70 Monitor > Multicast > IGMP > Vlan
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