MESH networking method based on multi-way optical fiber redundant backup

Abstract

The invention relates to a MESH networking method based on multi-way optical fiber redundant backup. All sink root nodes in a MESH network are connected with a three-layer switch by optical fibers. The number and positions of the sink root nodes accessing the three-layer switch are determined according to the network capacity of the MESH network. Subnodes of the sink root nodes operate an H-OLSR dynamic route protocol. Through adoption of the H-OLSR dynamic route protocol, optimum route paths to the sink root nodes can be selected by taking energy and power integrated indicators as judgment basis. The three-layer switch operates an OSPF dynamic route protocol. The sink root nodes operate the H-OLSR dynamic route protocol and the OSPF dynamic route protocol in support of the H-OLSR dynamic route protocol. The sink root nodes communicate with the subnodes through the H-OLSR dynamic route protocol. The sink root nodes communicate with the three-layer switch through the OSPF dynamic route protocol.

Description

technical field [0001] The invention relates to the technical field of communication, and more specifically, to a MESH networking method based on multi-channel optical fiber redundancy backup. Background technique [0002] The nodes in the MESH network are divided into aggregation root nodes and sub-nodes. The aggregation root node is connected to one or more sub-nodes. The traffic of all sub-nodes under the aggregation root node is forwarded to the corresponding aggregation root node through multiple hops, and then the aggregation The root node is connected to a Layer 3 switch or router. The aggregation root node and the child nodes under the aggregation root node belong to the same subnet. [0003] In traditional MESH network networking, there are mainly the following two solutions: [0004] Solution 1: A single aggregation root node is connected to a Layer 3 switch or router through optical fibers. [0005] This access method has great disadvantages. When the aggregati...

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Problems solved by technology

[0013] like figure 1 , for the downlink video acknowledgment data (TCP ACK) from the destination address to the aggregation root node of Suidong Station, because the OSPF of the aggregation root node cannot recognize the standard OLSR type external routing path and weight, the three-layer switch randomly selects the exit of Zengcheng Station As the next hop, the TCP ACK begins to detour through the multi-hop transmission of 13 sub-nodes from the aggregation root node of Zengcheng station to the aggregation root node of Suidong station. Due to the excessive number of hops, the attenuation of throughput is too large, resulting in video transmission Unable to watch high-definition video due to excessive delay

[0014] If a certain aggregation root node or optical fiber fails, the traffic passing through this root node cannot be automatically switched to another aggregation root node, and it is impossible to realize automatic redundant backup between multiple aggregation root nodes through optical fiber

[0015] Due to the bypass problem, the network capacity and the number of nodes are limited, which makes this scheme unable to be popularized and applied

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