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 system and multicast network link defect detection, can solve the problem of not providing a multicast link defect detection mechanism, etc.
Active Publication Date: 2009-11-25
HUAWEI TECH CO LTD
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[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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[0037] The embodiment of the present invention utilizes the characteristics of the tree structure of the multicast network to realize the defect detection of the links of the whole network for the multicast network.
[0038] figure 1 It is a flow chart of a method for detecting multicast network link defects according to an embodiment of the present invention. Such as figure 1 As stated, the method includes:
[0039] Step 101, the source end node sends defect detection messages to all branch links.
[0040] Step 102, the branch node in the branch link receives the defect detection message sent by the upper node, and forwards the defect detection message to the lower node, that is, the defect detection message is forwarded along the same path as the user message, until the end node .
[0041] 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 receiving state of the defect...
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The invention discloses a method for detecting the defect of a multicast network link. The defect detection message is sent to all branch links through the source end node, and the branch nodes in the branch link receive and forward the defect detection message downward until all A terminal node; the solution that the terminal node detects the defect of the branch link according to the receiving state of the defect detection message, so that the detection of the defect of the entire network link can be realized for the multicast network. The invention also discloses a multicast network system. The source node in the system sends defect detection messages to all branch links until all terminal nodes; the terminal nodes receive the defect detection messages sent by The reception status of the message, and detect the defect of the branch link. This multicast network system can realize the detection of link defects in the whole network.
Description
technical field [0001] The invention relates to the field of multicast network technology, in particular to a multicast network system and a method for detecting multicast network link defects. 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 conferencing, distance learning and so on. [0003] Currently, Multi-Protocol Label Switching Operation and Maintenance (MPLS OAM) technology provides a set of link defect detection mechanism for MPLS multicast network. The MPLS OAM technology is mainly used to detect point-to-point link defects in the data plane, including: label switched tunnel (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. [000...
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IPC IPC(8): H04L1/00H04L12/56H04L12/26H04L12/18
CPCH04L41/0677H04L12/1863H04L43/0811
Inventor 钟济熊艳清
Owner HUAWEI TECH CO LTD