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ES-4124 User’s Guide
Chapter 26 IGMP 187
CHAPTER 26
IGMP
This chapter shows you how to configure IGMP.
26.1 IGMP 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 switch supports both IGMP version 1 (IGMP-v1) and version 2 (IGMP-v2). At start up,
the switch queries all directly connected networks to gather group membership. After that, the
switch periodically updates this information.
26.2 Configuring IGMP
Click IP Application, 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 Section 7.6 on page 75).
Figure 89 IGMP
The following table describes the labels in this screen.
Table 68 IGMP
LABEL DESCRIPTION
Active Select this check box to enable IGMP on the switch.
Note: You cannot 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.