CHAPTER
24-1
Catalyst 3750 Switch Software Configuration Guide
OL-8550-02
24
Configuring IGMP Snooping and MVR
This chapter describes how to configure Internet Group Management Protocol (IGMP) snooping on the
Catalyst 3750 switch, including an application of local IGMP snooping, Multicast VLAN Registration
(MVR). It also includes procedures for controlling multicast group membership by using IGMP filtering
and procedures for configuring the IGMP throttling action. Unless otherwise noted, the term switch
refers to a standalone switch and a switch stack.
Note For IP Version 6 (IPv6) traffic, Multicast Listener Discovery (MLD) snooping performs the same
function as IGMP snooping for IPv4 traffic. For information about MLD snooping, see Chapter 37,
“Configuring IPv6 MLD Snooping.”
Note For complete syntax and usage information for the commands used in this chapter, see the switch
command reference for this release and the “IP Multicast Routing Commands” section in the Cisco IOS
IP Command Reference, Volume 3 of 3:Multicast, Release 12.2.
This chapter consists of these sections:
• Understanding IGMP Snooping, page 24-2
• Configuring IGMP Snooping, page 24-7
• Displaying IGMP Snooping Information, page 24-16
• Understanding Multicast VLAN Registration, page 24-18
• Configuring MVR, page 24-20
• Displaying MVR Information, page 24-24
• Configuring IGMP Filtering and Throttling, page 24-24
• Displaying IGMP Filtering and Throttling Configuration, page 24-29
Note You can either manage IP multicast group addresses through features such as IGMP snooping and MVR,
or you can use static IP addresses.
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