3Com 3500 manual Ip multicast dvmrp interface mode

ip multicast dvmrp interface mode 507

ip multicast dvmrp interface mode

✓3500

✓9000

9400

3900

9300

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

Enables or disables the Distance-Vector Multicast Routing Protocol (DVMRP) per routing interface. This protocol facilitates router-to-router communication for building source-rooted spanning trees that deliver IP multicast traffic to IP multicast group members.

Valid Minimum Abbreviation

ip m d i m

Important Considerations

■When DVMRP is enabled on an interface, the interface is configured with the default value of 1 for the metric, which you can modify at any time. See “ip multicast dvmrp interface metric” later in this chapter.

■If DVMRP is enabled on any interface, IGMP snooping should also be enabled in the system. See “ip multicast igmp snooping” later in this chapter.

■If DVMRP is disabled, the interface cannot participate in building spanning trees for IP multicast. However, as long as IGMP snooping is enabled, the interface forwards appropriate IP multicast traffic to downstream group members. If IGMP snooping is disabled, then the interface only forwards IP multicast traffic with addresses in the reserved range.

Options

Prompt	Description	Possible Values		[Default]
IP interface	Index number of the interface	■	A valid IP	–
	for which you want to enable		interface index
	or disable DVMRP		number
		■	all
		■ ? (for a list of
			selectable
			indexes)
DVMRP	Whether DVMRP mode is	■	enabled	disabled (factory
mode	enabled or disabled	■	disabled	default), or
				current value