Configuring Igmp Snooping - Cisco Catalyst 4500 series Administration Manual

Chapter 27 Configuring IGMP Snooping and Filtering, and MVR

Configuring IGMP Snooping

When configuring IGMP, configure the VLAN in the VLAN database mode. See
Note
"Configuring VLANs, VTP, and VMPS."
IGMP snooping allows switches to examine IGMP packets and make forwarding decisions based on their
content.
These sections describe how to configure IGMP snooping:
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Default IGMP Snooping Configuration
Table 27-1
Table 27-1
Feature
IGMP snooping
Multicast routers
Explicit Host Tracking
Immediate-leave processing
Report Suppression
IGMP snooping learning method
1. PIM/DVMRP = Protocol Independent Multicast/Distance Vector Multicast Routing Protocol
OL_28731-01
Default IGMP Snooping Configuration, page 27-5
Enabling IGMP Snooping Globally, page 27-6
Enabling IGMP Snooping on a VLAN, page 27-6
Configuring Learning Methods, page 27-7
Configuring a Static Connection to a Multicast Router, page 27-8
Enabling IGMP Immediate-Leave Processing, page 27-8
Configuring the IGMP Leave Timer, page 27-9
Configuring IGMP Snooping Querier, page 27-10
Configuring Explicit Host Tracking, page 27-11
Configuring a Host Statically, page 27-11
Suppressing Multicast Flooding, page 27-12
shows the IGMP snooping default configuration values.
IGMP Snooping Default Configuration Values
Default Value
Enabled
None configured
Enabled for IGMPv3; Not available for IGMPv2
Enabled for IGMPv3; Disabled for IGMPv2
Enabled
1
PIM/DVMRP
Software Configuration Guide-Release IOS XE 3 6.0E and IOS 15.2(2)E
Configuring IGMP Snooping
Chapter 16,
27-5