ECS4660-28F_Management Guide-R03

C HAPTER 21 | Multicast Routing
Configuring Global Settings for Multicast Routing
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Join SPT – The rate of traffic arriving over the shared tree has
exceeded the SPT-threshold for this group. If the SPT flag is set for
(*,G) entries, the next (S,G) packet received will cause the router
to join the shortest path tree. If the SPT flag is set for (S,G), the
router immediately joins the shortest path tree.
Downstream Interface List –
◆ Interface – Interface(s) on which multicast subscribers have been
recorded.
◆ State – The flags associated with each downstream interface indicate:
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Forward – Traffic received from the upstream interface is being
forwarded to this interface.
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Local – Downstream interface has received IGMP report message
from host in this subnet.
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Pruned – This route has been terminated.
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Registering - A downstream device is registering for a multicast
source.
WEB INTERFACE (IPV4)
To display the multicast routing table:
1. Click Multicast, Multicast Routing, Information.
2. Select Show Summary from the Action List.
Figure 520: Displaying the IPv4 Multicast Routing Table
To display detailed information on a specific flow in multicast routing table:
1. Click Multicast, Multicast Routing, Information.
2. Select Show Details from the Action List.
3. Select a Group Address.
4. Select a Source Address.