
114064 Rev. B 4-1
Chapter 4
Customizing DVMRP
This chapter consists of the following sections describing the Distance Vector
Multicast Routing Protocol (DVMRP):
• DVMRP Concepts and Terminology -- page 4-2
Neighbor Connections -- page 4-2
Source Route Advertisements -- page 4-4
How DVMRP Chooses a Route -- page 4-4
Routing Table and Forwarding Table -- page 4-5
Shortest-Path Trees -- page 4-6
• Configuring DVMRP on the Router -- page 4-7
Setting the Update Interval -- page 4-7
Configuring Tree Pruning -- page 4-8
Configuring DVMRP Timers -- page 4-9
Specifying a Probe Interval -- page 4-11
Specifying a Route Switch Interval -- page 4-11
Estimating the Number of Routes -- page 4-11
Logging Debugging Messages -- page 4-12
Specifying an MTU Size -- page 4-12
Specifying the Maximum Number of Routes -- page 4-12
• Configuring DVMRP on a Circuit -- page 4-13
Calculating a Route Metric and Comparing Route Costs -- page 4-13
Specifying a Threshold -- page 4-14
Configuring a Forwarding Table -- page 4-15
Disabling Advertisement of Local Networks -- page 4-16
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