Ip Dvmrp - SMC Networks SMC6724L3 Management Manual

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to the router. When the router receives these messages, it records all
the downstream routers for the default route.
• When multicast traffic with an unknown source address (i.e., not found
in the route table) is received on the default upstream route interface,
the router forwards this traffic out through the other interfaces (with
known downstream routers). However, when multicast traffic with an
unknown source address is received on another interface, the router
drops it because only the default upstream interface can forward
multicast traffic from an unknown source.
Example
Console(config-router)#default-gateway 10.1.0.253
Console(config-router)#

ip dvmrp

Use this command to enable DVMRP on the specified interface. Use the
no form to disable DVMRP on this interface.
Syntax
ip dvmrp
no ip dvmrp
Default Setting
Disabled
Command Mode
Interface Configuration (VLAN)
Command Usage
To fully enable DVMRP, you need to enable multicast routing globally
for the router with the ip multicast-routing command (page 4-288),
enable DVMRP globally for the router with the router dvmrp
command (page 4-291), and also enable DVMRP for each interface that
will participate in multicast routing with the ip dvmrp command.
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