Configuring the ECN330-switch
4791553-KDU 137 365 Uen D 2006-06-16
6.21.3.2 Configuring DVMRP Interface Settings
To fully enable DVMRP, multicast routing needs to be enabled globally for the
router (page 469), then enable DVMRP globally for the router (page 474), and
also enable DVMRP for each interface that will participate in multicast routing.
Command Attributes
DVMRP Interface Information
• Interface – VLAN interface on this router that has enabled DVMRP.
• Address – IP address of this VLAN interface.
• Metric – The metric for this interface used to calculate distance vectors.
• Status – Shows that DVMRP is enabled on this interface.
DVMRP Interface Settings
• VLAN – Selects a VLAN interface on this router.
• Metric – Sets the metric for this interface used to calculate distance
vectors.
• Status – Enables or disables DVMRP.
• If DVMRP is enabled on any interface, Layer 3 IGMP should also be
enabled on the router (page 362).
• If DVMRP is disabled, the interface cannot propagate IP multicast
routing information. However, as long as IGMP snooping is enabled,
the interface will still forward multicast traffic to downstream group
members within the VLAN. But if IGMP snooping is disabled, then
the interface will flood incoming multicast traffic to all ports in the
attached VLAN.
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