Cisco Cisco IOS Software Release 12.2(33)SXH

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Extended ACL Support for IGMP to Support SSM 
in IPv4 
The Extended ACL Support for IGMP to Support SSM in IPv4 feature enables IGMP Version 3 
(IGMPv3) to accommodate extended access lists. IGMPv3 support of extended access lists allows you 
to leverage an important advantage of Source Specific Multicast (SSM) in IPv4, that of filtering IGMPv3 
reports based on source address, group address, or both. 
Configuration Information
Configuration information is included in the “Customizing IGMP” module of the Cisco IOS IP Multicast 
Configuration Guide,
 Release 12.4T,
 
at the following URL:
The following sections provide information about this feature:
Controlling Access to an SSM Network 
Controlling Access to an SSM Network: Examples
For a complete list of features included in the “Customizing IGMP” module, see the Feature Information 
table located toward the end of the module.
Command Reference Information
Release 12.2SB
The following command is new or modified for this feature:
ip igmp access-group
Detailed information about this command is included in the Cisco IOS IP Multicast Command 
Reference
, Release 12.2SB, at the following URL: