Multi-level star switching network structure and optimization method
A technology of network structure and optimization method, applied in the field of network communication, can solve problems such as neglect, and achieve the effect of reducing waste and congestion
Active Publication Date: 2017-05-10
XIDIAN UNIV
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Problems solved by technology
In a large part of the current research, the cost of the switching network is only related to one factor, such as the number of switching units, ignoring the influence of the flow through the switching unit or the port rate on the cost, which is for switching devices with unequal port rates. It is impractical to say, for example, the cost of an 8-port 1000M Ethernet switch is usually 3 times that of an 8-port 100M switch
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[0037] The present invention will be further described below with reference to accompanying drawing:
[0038] refer to figure 1 , the multi-level star switching network of the present invention is derived from the hierarchical tree switching network structure widely used in actual networks. The network has N levels of basic switching modules, N≥2, and each level of basic switching modules is provided with a different number of ports. in:
[0039] The basic switch module of level i has Q i +1 port, and the lower part is Q with the same speed i A low-speed port, numbered 0,1,...,Q from left to right i -1; the upper part is a high-speed port, i=1,2,...,N-1.
[0040] The basic switching modules of the Nth stage only have Q with the same rate N low-speed ports, sequentially numbered 0,1,...,Q N -1.
[0041] The interconnection relationship of the basic switching modules at all levels is as follows:
[0042] Starting from the only basic switching module at level N, its low-...
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The invention discloses a multistage star type switched network structure and an optimizing method. The multistage star type switched network structure and the optimizing method mainly solve the problems that in an existing network technology, switching module port rates are the same, and only the number of ports is taken into consideration for the price of switching modules. The multistage star type switched network structure is formed by sequentially connecting basic switching modules from the first stage to the Nth stage, wherein each basic switching module is provided with a high-speed port and multiple low-speed ports; the high-speed port of the basic switching module of the (N-1)th stage is sequentially connected with the low-speed ports of the basic switching module of the Nth stage from the leftmost side; in this way, the high-speed port of the basic switching module of the kth stage is sequentially connected with the low-speed ports of the basic switching module of the (k+1)th stage from the leftmost side, the network structure is expanded outwards, and k is equal to N-1, ..., 1. According to the multistage star type switched network structure and the optimizing method, flow waste in the network is reduced, jamming is relieved, and the multistage star type switched network structure and the optimizing method can better conform to practical application scenes and can be used for designing and optimizing switching systems with SDHs or access networks, data centers and the like of Ethernet switching devices.
Description
technical field [0001] The invention belongs to the field of network communication, in particular to a switching network structure in a communication network and an optimization method thereof, which can be used to design and optimize switching systems such as access networks and data centers using SDH or Ethernet switching equipment. [0002] technical background [0003] Synchronous digital system SDH and Ethernet are currently the most important and widely used broadband transmission technologies. One of their important features is that the interface rates of adjacent rate levels increase proportionally, and there are synchronous or Asynchronous multiplexing, such as SDH and Ethernet rates are synchronous transmission module STM-N and asynchronous x Gbps respectively, and the ratio coefficients of the adjacent level rates of the two are 4 and 10 respectively, where N=1, 4, 16, 64, 256 and x=0.1,1,10,100. Most SDH and Ethernet single multiplexing / switching devices in the a...
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IPC IPC(8): H04L12/44
Inventor 徐展琦丁喆张晓磊刘杨李爽
Owner XIDIAN UNIV