Configuring Igmp Snooping - Cisco Catalyst 4500 Series Software Configuration Manual

Chapter 28 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 28-1
Table 28-1
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
Default IGMP Snooping Configuration, page 28-5
Enabling IGMP Snooping Globally, page 28-6
Enabling IGMP Snooping on a VLAN, page 28-6
Configuring Learning Methods, page 28-7
Configuring a Static Connection to a Multicast Router, page 28-8
Enabling IGMP Immediate-Leave Processing, page 28-8
Configuring the IGMP Leave Timer, page 28-9
Configuring IGMP Snooping Querier, page 28-10
Configuring Explicit Host Tracking, page 28-11
Configuring a Host Statically, page 28-11
Suppressing Multicast Flooding, page 28-12
shows the IGMP snooping default configuration values.
IGMP Snooping Default Configuration Values
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Default Value
Enabled
None configured
Enabled for IGMPv3; Not available for IGMPv2
Enabled for IGMPv3; Disabled for IGMPv2
Enabled
1
PIM/DVMRP
Configuring IGMP Snooping
Chapter 17,
28-5