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IGMP Queries ..........................................................................................................3-2
IGMP Host Reports ..................................................................................................3-3
Host Leave Messages ..............................................................................................3-3
Customizing Global IGMP ..............................................................................................3-4
Enabling and Disabling IGMP ..................................................................................3-5
Estimating the Number of Groups ............................................................................3-6
Specifying a Version Threshold Time .......................................................................3-8
Configuring Logging ...............................................................................................3-10
Enabling Join Acknowledgments ............................................................................3-11
Specifying a Forwarding Cache Limit .....................................................................3-12
Accepting a Nonlocal Report .................................................................................3-13
Customizing IGMP on an Interface ...............................................................................3-14
Enabling and Disabling IGMP on an Interface .......................................................3-15
Specifying a Query Rate ........................................................................................3-16
Specifying a Membership Timeout Interval ............................................................3-18
Specifying a Designated Router Timeout Interval ..................................................3-19
Specifying a Maximum Host Response Time ........................................................3-20
Specifying the Lifetime of an Mtrace Cache Entry .................................................3-21
Configuring a Static Host Entry ....................................................................................3-22
Configuring an IGMP Boundary Group ........................................................................3-23
Configuring IGMP Policies ............................................................................................3-24
Chapter 4
Customizing DVMRP
DVMRP Concepts and Terminology ...............................................................................4-2
Neighbor Connections ..............................................................................................4-2
Source Route Advertisements .................................................................................4-4
How DVMRP Chooses a Route ...............................................................................4-5
Routing Table ...........................................................................................................4-6
Shortest-Path Trees .................................................................................................4-7
Tree Pruning .............................................................................................................4-7
Customizing DVMRP Globally ........................................................................................4-8
Disabling and Reenabling DVMRP ...........................................................................4-9
Setting the Update Interval ....................................................................................4-10
Disabling and Reenabling Tree Pruning .................................................................4-12
Setting the Route Expiration Timer ........................................................................4-13
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