Cisco Cisco IOS Software Release 12.2(18)SXF

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IGMP Static Group Range Support
  Information About IGMP Static Group Range Support
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Cisco IOS Release 12.2(18)SXF5
Information About IGMP Static Group Range Support
To configure the IGMP Static Group Range Support feature, you should understand the following 
concepts:
IGMP Static Group Range Support Overview
Prior to the introduction of the IGMP Static Group Range Support feature in Cisco IOS 
Release 12.2(18)SXF5, the ip igmp static-group command did not provide an option to specify group 
ranges. Administering devices that required many ip igmp static-group command configurations was 
challenging in some network environments, because each static group had to be configured individually 
with the ip igmp static-group command, which resulted in configurations that were excessively long 
and difficult to manage.
The IGMP Static Group Range Support feature introduces the capability to configure group ranges in 
class maps and attach class maps to the ip igmp static-group command. This feature is an enhancement 
that simplifies the administration of networks with devices that require many interfaces to be configured 
with many different ip igmp static-group command configurations.
Class Maps for IGMP Static Group Range Support
A class is a way of identifying a set of packets based on its contents. A class is designated through class 
maps. Typically, class maps are used to create traffic policies. Traffic policies are configured using the 
modular quality of service (QoS) command-line interface (CLI) (MQC). The normal procedure for 
creating traffic policies entails defining a traffic class (using the class-map command), creating a traffic 
policy (using the policy-map command), and attaching the policy to an interface (using the 
service-policy command).
Note
Although this feature uses the MQC to define class maps, the procedure for configuring Internet Group 
Management Protocol (IGMP) static group class maps is different from the normal procedure used to 
create class maps for configuring QoS traffic policies. See the 
 section for more information.
The IGMP Static Group Range Support feature introduces a type of class map that is used to define group 
ranges, group addresses, SSM channels, and SSM channel ranges. Once created, the class map can be 
attached to interfaces.