Cisco Catalyst 2950 Software Configuration Manual page 393

Configuring IGMP Snooping and MVR
This chapter describes how to configure Internet Group Management Protocol (IGMP) snooping on your
Catalyst 2950 or Catalyst 2955 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.
For complete syntax and usage information for the commands used in this chapter, see the switch
Note
command reference for this release and the Cisco IOS Release Network Protocols Command Reference,
Part 1, for Cisco IOS Release 12.1
This chapter consists of these sections:
Understanding IGMP Snooping, page 20-2
•
• Configuring IGMP Snooping, page 20-7
Displaying IGMP Snooping Information, page 20-15
•
• Understanding Multicast VLAN Registration, page 20-16
Configuring MVR, page 20-19
•
• Displaying MVR Information, page 20-22
Configuring IGMP Filtering and Throttling, page 20-23
•
• Displaying IGMP Filtering and Throttling Configuration, page 20-28
Note For MAC addresses that map to IP multicast groups, you can either manage them through features such
as IGMP snooping and MVR, or you can use static MAC addresses. However, you cannot use both
methods simultaneously. Therefore, before using IGMP snooping or MVR, you should remove all
statically configured MAC addresses that map to IP multicast groups.
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C H A P T E R
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
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20-1