Concept Guide

Table Of Contents
IGMP Implementation Information...............................................................................................................................372
IGMP Protocol Overview.............................................................................................................................................. 372
IGMP Version 2........................................................................................................................................................ 372
IGMP Version 3.........................................................................................................................................................374
Congure IGMP..............................................................................................................................................................377
Related Conguration Tasks................................................................................................................................... 377
Viewing IGMP Enabled Interfaces............................................................................................................................... 378
Selecting an IGMP Version........................................................................................................................................... 378
Viewing IGMP Groups................................................................................................................................................... 379
Adjusting Timers.............................................................................................................................................................379
Adjusting Query and Response Timers................................................................................................................. 379
Preventing a Host from Joining a Group.................................................................................................................... 380
Enabling IGMP Immediate-Leave.................................................................................................................................383
IGMP Snooping..............................................................................................................................................................383
IGMP Snooping Implementation Information....................................................................................................... 383
Conguring IGMP Snooping...................................................................................................................................383
Removing a Group-Port Association.....................................................................................................................384
Disabling Multicast Flooding...................................................................................................................................384
Specifying a Port as Connected to a Multicast Router...................................................................................... 385
Conguring the Switch as Querier........................................................................................................................ 385
Fast Convergence after MSTP Topology Changes...................................................................................................386
Egress Interface Selection (EIS) for HTTP and IGMP Applications........................................................................386
Protocol Separation.................................................................................................................................................386
Enabling and Disabling Management Egress Interface Selection...................................................................... 387
Handling of Management Route Conguration................................................................................................... 388
Handling of Switch-Initiated Trac....................................................................................................................... 389
Handling of Switch-Destined Trac......................................................................................................................389
Handling of Transit Trac (Trac Separation).................................................................................................... 390
Mapping of Management Applications and Trac Type.....................................................................................390
Behavior of Various Applications for Switch-Initiated Trac .............................................................................391
Behavior of Various Applications for Switch-Destined Trac ...........................................................................392
Interworking of EIS With Various Applications.....................................................................................................393
Designating a Multicast Router Interface................................................................................................................... 393
21 Interfaces.................................................................................................................................................395
Basic Interface Conguration.......................................................................................................................................395
Advanced Interface Conguration...............................................................................................................................395
Interface Types...............................................................................................................................................................396
View Basic Interface Information.................................................................................................................................396
Resetting an Interface to its Factory Default State...................................................................................................398
Enabling a Physical Interface........................................................................................................................................398
Physical Interfaces.........................................................................................................................................................399
Conguration Task List for Physical Interfaces....................................................................................................399
Overview of Layer Modes...................................................................................................................................... 399
Conguring Layer 2 (Data Link) Mode................................................................................................................. 400
Conguring Layer 2 (Interface) Mode.................................................................................................................. 400
Contents
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