R3166-R3206-HP High-End Firewalls Network Management Configuration Guide-6PW101

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Multicast routing configuration
NOTE:
The term
router in this document refers to both routers and Layer 3 switches.
In multicast implementations, multicast routing and forwarding are implemented by three types of tables:
• Each multicast routing protocol has its own multicast routing table, such as PIM routing table.
• The information of different multicast routing protocols forms a general multicast routing table.
• The multicast forwarding table is directly used to control the forwarding of multicast packets.
A multicast forwarding 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 will include routes generated by multiple protocols. The
router chooses 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 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
Table 71 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.
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.