H3C Technologies H3C SecPath F1000-E - Manual (Page 342)

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Multicast Routing Configuration
When configuring multicast routing, go to these sections for information you are interested in:
• Multicast Routing Overview
• Configuring Multicast Routing
NOTE:
The term “router” in this document refers to a network device running an IP routing protocol.
Multicast Routing Overview
In multicast implementations, multicast routing is implemented by two types of tables:
• Multicast routing table specific to a multicast routing protocol, such as PIM routing table.
• General multicast routing table formed by the information of different multicast routing tables.
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
chooses the optimal route from the multicast routing table based on the configured multicast routing
policy.
Configuring Multicast Routing
Configuration Prerequisites
Before configuring multicast routing, you need to configure a unicast routing protocol so that all devices
in the domain are interconnected at the network layer.
Configuration Overview
Perform the tasks in Table 1 to configure multicast routing.
Table 1 Multicast routing 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.