ZyXEL Communications ZyXEL Dimension ES-4024 - Manual (Page 162)

ES-4024A User’s Guide
Chapter 26 IGMP 161
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H A P T E R
26
IGMP
This chapter shows you how to configure IGMP.
26.1 Overview
IGMP (Internet Group Multicast Protocol) is a session-layer protocol used to establish
membership in a multicast group - it is not used to carry user data. Refer to RFC 1112 and
RFC 2236 for information on IGMP versions 1 and 2 respectively.
The ES-4024A supports both IGMP version 1 (IGMP-v1) and version 2 (IGMP-v2). At start
up, the ES-4024A queries all directly connected networks to gather group membership. After
that, the ES-4024A periodically updates this information.
26.2 Configuring IGMP
Click Routing Protocol, IGMP in the navigation panel to display the screen as shown next.
Each entry in the table is automatically created when you configure a new IP domain in the IP
Setup screen (refer to the section on IP routing domain setup).
Figure 93 IGMP
The following table describes the labels in this screen.
Table 58 IGMP
LABEL DESCRIPTION
Active Select this check box to enable IGMP on the switch.
Note: You can NOT enable both IGMP snooping and IGMP at the same
time. Refer to the section on IGMP snooping.
Index This field displays an index number of an entry.