A method, device and system for realizing multicast service flow protection
A multicast service and flow protection technology, applied in transmission systems, digital transmission systems, data switching networks, etc., can solve the problems of multicast service flow wasting bandwidth, leaf node service flow jitter, etc., and reduce the workload of configuration and maintenance , cost-saving effect
Inactive Publication Date: 2015-08-12
ZTE CORP
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[0003] In view of this, the main purpose of the present invention is to provide a method, device and system for realizing multicast service flow protection, so as to solve the problems of wasted bandwidth and service flow jitter on each leaf node in the existing multicast service flow protection.
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[0033] A kind of method that realizes multicast service flow protection of the present invention, refer to figure 1 As shown, it mainly includes the following steps:
[0034] Step 101: A P2P tunnel is established between a leaf node in the multicast network and a preset protection source node for forwarding multicast traffic;
[0035] Step 102: When detecting that the path where it is located has a fault, the leaf node notifies the protection source node, so that the protection source node can activate the established P2P tunnel and forward the multicast service flow;
[0036] Here, the path where the leaf node is located may be one or more multicast paths or one or more branch paths in the multicast network with the leaf node as the receiving point of the multicast service flow.
[0037] Step 103: the leaf node receives the multicast service flow forwarded by the protection source node through the P2P tunnel.
[0038] Wherein, before step 101, the method further includes: i...
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The invention discloses a multicast service stream protection realization method. In the method, a peer-to-peer (P2P) tunnel is established between a leaf node in a multicast network and a preset protection source node, the leaf node informs the protection source node when detecting a path with the leaf node fails, and the protection source node forwards a multicast service stream to the leaf node. The invention also discloses a multicast service stream protection realization device and a multicast service stream protection realization system. Multicast service stream protection can be realized without establishing a plurality of protection paths, and the configuration of network maintenance and maintenance workload can be reduced on the premise of ensuring other leaf nodes are not influenced in a path switching process. In addition, the single P2P tunnel can be used for protecting the multicast service streams on a plurality of multicast paths with the same leaf node, so the sharing of protection resources is realized, and the overhead of the protection resources is effectively saved.
Description
technical field [0001] The invention relates to the field of multicast services, in particular to a method, device and system for realizing multicast service flow protection. Background technique [0002] Existing multicast path protection methods based on Multi-Protocol Label Switching (MPLS, Multi-Protocol Label Switching) mainly include two types: a method is a 1+1 path protection method, which uses service information in multicast work Dual transmission is performed on the path and the protection path, and the receiving end selects and receives the service information sent by the two paths according to the quality of the service information. This method transmits the same service information through two paths, which wastes a lot of bandwidth overhead and equipment. resources; another method is the path protection method of 1:n (n>=1). For multiple multicast paths with the same source node and destination node, a protection path is set. In the normal state, the protect...
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IPC IPC(8): H04L12/711H04L12/24H04L29/08H04L45/247H04L45/16H04L45/24
Inventor 刘国满
Owner ZTE CORP