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Multicasting network system and method for detecting link fault of multicasting network

A defect and link technology, which is applied in the field of multicast network systems and detection of multicast network link defects, and can solve the problem of not providing a multicast link defect detection mechanism.

Active Publication Date: 2007-09-19
HUAWEI TECH CO LTD
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Problems solved by technology

[0015] To sum up, the existing MPLS OAM technology detection method for link defects provides a link defect detection mechanism for a few critical paths in MPLS multicast networks, but does not provide defect detection mechanisms for the entire network links of MPLS multicast networks. Detection mechanism, that is, no end-to-end multicast link defect detection mechanism is provided

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  • Multicasting network system and method for detecting link fault of multicasting network

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Embodiment Construction

[0036] The embodiment of the present invention utilizes the characteristics of the multicast network tree structure to realize the defect detection of the entire network link for the multicast network.

[0037] FIG. 1 is a flowchart of a method for detecting a link defect of a multicast network according to an embodiment of the present invention. As shown in Figure 1, the method includes:

[0038] Step 101: The source node sends defect detection packets to all branch links.

[0039] Step 102, the branch node in the branch link receives the defect detection message sent by the upper-layer node, and forwards the defect detection message to the lower-layer node, that is, the defect detection message is forwarded along the same path as the user message until the terminal node. .

[0040] Step 103: The terminal node receives the defect detection message sent by the upper-layer node, and detects the defect of the branch link according to the reception status of the defect detectio...

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Abstract

The invention discloses a method to detect the defects of a multicast network link. The invention sends a defect detecting report through a source terminal node to all branch links, and a branch node in the branch link receives and forwards the defect detecting report downwards till reaching all terminal node; and then the terminal node detects the defect case of the branch link according to the receiving state of the defect detecting report, which can achieves the detecting for the whole network link defects of the multicast network. The invention discloses a multicast network system. The terminal node in the system can send defect detecting report to all branch links till all terminal node; the terminal node receives the defect detecting report from the upper layer node, and detects the defect of the branch link according to the receiving state of the defect detecting report. The multicast network system can achieve the detecting for the whole network link.

Description

technical field [0001] The invention relates to the technical field of multicast networks, in particular to a multicast network system and a method for detecting link defects of a multicast network. Background technique [0002] Multicast, also known as multicast, is a point-to-multipoint or multipoint-to-multipoint communication method. With the development of the Internet, the application of multicast network is more and more extensive, such as video on demand, video conference, distance learning and so on. [0003] Currently, the Multi-Protocol Label Switching Operation and Maintenance (MPLS OAM) technology provides a set of link defect detection mechanisms for MPLS multicast networks. MPLS OAM technology is mainly used to detect point-to-point link defects in the data plane, including: Label Switched Path (LSP) interruption, LSP label switching error, LSP label merging error, LSP self-merging and Denial of Service (Denial of Service, DoS) etc. [0004] The existing LM...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L12/56H04L12/26H04L12/18
CPCH04L41/0677H04L12/1863H04L43/0811
Inventor 钟济熊艳清
Owner HUAWEI TECH CO LTD
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