Overview Of Ipv4 Multicast Routing Management; Ipv4 Multicast Routing Management Features Supported By The S3700 - Huawei Quidway s3700 series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Multicast

9.1 Overview of IPv4 Multicast Routing Management

Multicast routing and forwarding maintains a protocol routing table, multicast routing table, and
multicast forwarding table. A multicast routing protocol creates multicast routing entries through
RPF.
In the S3700, multicast routing and forwarding consist of the following three aspects:
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To ensure that multicast data is transmitted along the correct path, multicast routing protocols
use the Reverse Path Forwarding (RPF) to create multicast routing entries.
The system performs RPF check based on the following types of routes:
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9.2 IPv4 Multicast Routing Management Features
Supported by the S3700
The IPv4 multicast routing management features supported by the system are: static multicast
route, GRE tunnel, multicast routing policy, controlling the multicast forwarding range,
controlling the capacity of a multicast forwarding table, testing multicast routes, and multicast
splitting.
Issue 01 (2011-10-26)
NOTE
The S3700SI does not support IPv4 Multicast Route Management.
Each multicast routing protocol has its routing table, such as PIM routing table.
The multicast routing information of each multicast routing protocol forms a general
multicast routing table.
The multicast routing table resides in the multicast route management module. It is
composed of (S, G) entries. (S, G) indicates that S sends multicast data to G. If the multicast
route management module supports multiple multicast protocols, the routing table contains
multicast routes that are generated by the protocols. The routing entries are copied to the
forwarding table.
The multicast forwarding table controls the forwarding of multicast data packets.
The multicast forwarding table guides the forwarding of multicast data packets. It remains
consistent with the multicast routing table.
Unicast routes
The unicast routing table collects the shortest paths to each destination.
MBGP routes
The MBGP routing table provides multicast routing information.
MIGP routes
The MIGP routing table provides the routing information calculated based on physical
interfaces of the TE tunnel to guide the forwarding of multicast packets.
Static multicast routes
The static multicast routing table provides RPF routing information that is specified through
static configuration.
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