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## Configuring DVMRP

E-series routers support Distance Vector Multicast Routing Protocol (DVMRP) on VRs to forward multicast datagrams through a network. DVMRP is an interior gateway protocol that supports operations within an autonomous system, but not between autonomous systems. The multicast backbone of the Internet, MBone, uses DVMRP to forward multicast datagrams. This chapter describes how to configure DVMRP on E-series routers; it contains the following sections:

- Overview
- Platform Considerations
- References
- Before You Begin
- Enabling DVMRP on a VR
- Activating DVMRP on an Interface
- Configuring DVMRP Limits
- Filtering DVMRP Reports
- Configuring DVMRP Summary Addresses
- Changing the Metric for a Route
- Importing Routes from Other Protocols
- Specifying Routes to Be Advertised
- Preventing Dynamic Route Distribution
- Exchanging DVMRP Unicast Routes
- Disabling and Removing DVMRP
- Clearing DVMRP Routes
- Configuring DVMRP Tunnels
- Monitoring DVMRP

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