H3C Technologies H3C SecPath F1000-E - Manual (Page 588)

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Configuring multicast routing and forwarding
In multicast implementations, multicast routing and forwarding are implemented by routing and
forwarding tables:
• Each multicast routing protocol has its own multicast routing table, such as the PIM routing table.
• The multicast routing information of different multicast routing protocols forms a general multicast
routing table.
• The multicast forwarding table helps guide the forwarding of multicast packets.
A multicast routing table consists of a set of (S, G) entries, each indicating the routing information for
delivering multicast data from a multicast source to a multicast group. If a router supports multiple
multicast protocols, its multicast routing table includes routes generated by multiple protocols. The router
selects the optimal route from the multicast routing table based on the configured multicast routing and
forwarding policy and adds the route entry into its multicast forwarding table.
Configuring multicast routing and forwarding in the
Web interface
Configuration prerequisites
Before you configure multicast routing, you need to configure a unicast routing protocol so that all
devices in the domain are interconnected at the network layer.
Configuration task list
Task Remarks
Enabling multicast routing
Required.
Globally enable multicast routing. By default, multicast routing is disabled.
Multicast routing must be enabled before other Layer 3 multicast functions can
take effect.
Displaying multicast routing
table
Required.
Display multicast routing table entries that are calculated by a specific multicast
routing protocol.
The multicast routing table is the basis of multicast forwarding. You can view the
establishment state of an (S, G) entry by checking the multicast routing table.
Enabling multicast routing
1. Select Network > Routing Management > Multicast Routing from the navigation tree.
The Global Configuration page appears.