Method, device and system for creating bidirectional multicast distribution trees on basis of interior gateway protocol
An internal gateway protocol and multicast distribution tree technology, applied in the field of communication, can solve problems such as complex operation and maintenance, and achieve the effect of simplifying operation and maintenance
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Embodiment 1
[0059] As shown in Fig. 1 (a), a kind of method for creating bidirectional multicast distribution tree based on IGP provided by the embodiment of the present invention, in this embodiment, can be applied to all nodes of the whole network, and this method comprises:
[0060] 101. Receive at least one tree root address of the first node and a range of multicast groups supported by the first node flooded by the first node through the IGP.
[0061] Wherein, the first node is a node serving as the root of the entire network flooding tree. The root address of the first node and the range of multicast groups supported by the first node may be preconfigured. In this embodiment, at least one IP address is configured on each first node, and the IP address That is, the root address of the tree. Of course, the range of multicast groups supported by the first node may also be automatically configured by the first node according to its own attributes, which is not limited here.
[0062] I...
Embodiment 2
[0076]Another embodiment of the present invention provides a method for creating a bidirectional multicast distribution tree based on IGP, which is applied in a multipoint-to-multipoint multicast scenario, as shown in Figure 2(a), which is a multipoint-to-multipoint The network architecture diagram of the multicast scenario. The whole network includes multiple nodes (R1~R11), among which the terminals of the Layer 3 multicast group G1 are attached to the edge nodes R2 and R9, and the Layer 3 multicast group G1 is attached to the edge nodes R4 and R10. Terminals of the broadcast group G2; R1, R3, R7, and R8 are the first nodes. As shown in Figure 2 (b), the method for creating a bidirectional multicast distribution tree based on the IGP includes:
[0077] 201. A first node in the entire network sends configuration information to nodes in the entire network.
[0078] Wherein, the first node is a node serving as the root of the flooding tree in the entire network.
[0079] In t...
Embodiment 3
[0159] Embodiment 3 of the present invention provides a device for creating a bidirectional multicast distribution tree based on IGP, as shown in FIG. 3(a), including:
[0160] The first receiving unit 31 is configured to receive the root address of the first node flooded by at least one first node through IGP and the range of multicast groups supported by the first node, and the first node is used as the whole The node of the tree root of the network flooding tree; its specific implementation method can refer to the description of step 101 shown in Figure 1 (a), and will not be repeated here.
[0161] The first creating unit 32 is configured to use the first node as the source node to generate the shortest path to other nodes according to the tree root address of the first node received by the first receiving unit and the shortest path tree algorithm, according to The shortest path constitutes a flooding tree; its specific implementation method can refer to step 102 shown in ...
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