24-Port Layer 3 Switch Management Guide

ONFIGURING

THE

WITCH

3-220

routes to forward multicast traffic only if group members appear on

directly-attached subnetworks or on subnetworks attached to downstream

routers.

Field Attributes

• Group Address – IP group address for a multicast service.

• Source Address – Subnetwork containing the IP multicast source.

• Netmask – Network mask for the IP multicast source.

• Interface – Interface leading to the upstream neighbor.

• Owner – The associated multicast protocol (i.e., DVMRP or PIM).

• Flags – The flags associated with each interface indicate prune (P) if the

downstream interface has been recently terminated or forwarding (F) if

the interface is still active.

• Detail – This button displays detailed information for the selected entry.

• Upstream Router* – The multicast router immediately upstream for

this group.

• Downstream* – Interface(s) on which multicast subscribers have been

recorded.

* These items are displayed in the IP Multicast Routing Entry (Detail) table.