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Multimedia Traffic Control with IP Multicast

(IGMP)

Contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

IGMP General Operation and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

IGMP Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

IGMP Operating Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

CLI: Configuring and Displaying IGMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Web: Enabling or Disabling IGMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

How IGMP Operates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Operation With or Without IP Addressing . . . . . . . . . . . . . . . . . . . . . . 4-13

Automatic Fast-Leave IGMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Forced Fast-Leave IGMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

Configuration Options for Forced Fast-Leave . . . . . . . . . . . . . . . 4-15

Listing the Forced Fast-Leave Configuration . . . . . . . . . . . . . . . . 4-16

Configuring Per-Port Forced Fast-Leave IGMP . . . . . . . . . . . . . . . . . . 4-18

Using the Switch as Querier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

Excluding Well-Known or Reserved Multicast Addresses from IP

Multicast Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

4-1

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