3Com 3500 Important Considerations, Function is activated and these values represent the cost

520CHAPTER 18: IP MULTICAST

ip multicast dvmrp default

✓3500

✓9000

9400

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Configures a default route for IP multicast traffic on a DVMRP interface. This interface advertises itself as a default route to neighboring DVMRP routers.

Valid Minimum Abbreviation

ip m d d

3900

9300	Important Considerations
	■ A default route metric of 0 means that the default route function is
	not activated on the interface (interface does not advertise 0.0.0.0 to
	DVMRP routers). Values other than 0 means that the default route
	function is activated and these values represent the “cost” of the
	default route.
	■ Definitions of default route modes:
	■ all — The interface advertises the default route plus all other
	known routes to neighboring DVMRP routers.
	■ only — The interface advertises only the default route to
	neighboring DVMRP routers.
	If the system learns a default route, it propagates it no matter which
	mode is set on a given interface.
	■ The system allows you to configure an interface as a DVMRP default
	route, even when DVMRP is disabled on the interface. If DVMRP is
	disabled, the interface does not advertise itself as a default route.
	Options
	Prompt	Definition	Possible Values		[Default]
	interface	Index number of the routing	■	A valid interface	1 (factory
		interface on which you want to		index number	default), or
		configure a default route	■ ? (for a list of		current value
				selectable
				indexes)
	default	Value that you assign to the	0 – 32		0 (factory
	route metric	default route as the “cost” of			default), or
		that route			current value
	default	Routes that the interface	■	all	all (factory
	route	advertises to neighboring	■	only	default), or
	advertise	DVMRP routers			current value

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