C
ONFIGURING
THE
S
WITCH
3-330
(page 3-324), 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 (page3-200).
- 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.