Cross layer mapping management method of share risk link group
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A technology for sharing risk links and management methods, applied in the field of cross-layer mapping management of shared risk link groups, can solve the problems of low accuracy, large workload, and improving the management complexity of shared risk link groups, etc. safety effect
Active Publication Date: 2013-01-09
HUAXIN CONSULTATING CO LTD
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Problems solved by technology
Because there is a one-to-many or many-to-one relationship between the lower-layer topology and the upper-layer topology in the existing network, that is, multiple WDM / OTN links are carried on one optical cable, and one WDM / OTN link is carried on multiple optical cables. Different optical cables may also share the same underlying physical resource, which leads to complex division and management of WDM / OTN layer network sharing risk link groups
At the same time, with the expansion of the network scale and the rapid increase of the dimension, the change of the line between two nodes will lead to the change of the topological relationship between multiple nodes, which greatly increases the complexity of the management of shared risk link groups
At present, the setting and management of shared risk link groups are often carried out through manual research and analysis. This method not only has a large workload and low efficiency, but also has low management accuracy, and cannot integrate the links between nodes in the topology network. Optimal configuration of lines
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Embodiment 1
[0030] Such as figure 1 As shown, the shared risk link group cross-layer mapping management method described in this embodiment includes counting the number of underlying physical topology segments, counting the number of optical cable topology links, counting the number of WDM / OTN topology optical cable segments, and then entering the following steps:
[0031] Step 1: Analyze the underlying physical topology 1 ,Such as figure 2 As shown, there are 5 sections in the underlying physical topology section, and each section of the pipeline is named P in turn 1 ,P 2 ,P 3 …P 5 .
[0032] Step 2: If image 3 The fiber optic cable topology, the fiber optic cable has 4 paragraphs, which are F 1 , F 2 , F 3 , F 4 , and the bearer route of the optical cable is as follows Figure 6 shown.
[0033] Step 3: Set the variable i=1, where i represents the number of times to map the optical cable layer sharing risk link.
[0034] Step 4: i ≤ 5, pipe all through P i The cable sect...
Embodiment 2
[0043] Such as Figure 5 As shown, in the shared risk link group cross-layer mapping management method described in this embodiment, on the basis of Embodiment 1, the C-E node adds a route P 6 , the underlying physical topology changes to Figure 5 , the bearer route of the optical cable network is changed to Figure 10 . According to the prompting of the inventive method again, repeat the operation of step 1 to step 7, obtain the new shared risk link form of optical cable network and WDM / OTN network, as Figure 11 and Figure 12shown. Re-arrange routes for service A-C. On the premise of sufficient channel resources, the main route of A-C is W1, and the backup route is W2-W3. The service security level has been effectively improved.
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Abstract
The invention relates to a cross layer mapping management method of a share risk link group. The cross layer mapping management method includes counting bottom layer physical topology sections, counting optical cable topology links and counting wavelength division multiplex/ optical transport network (WDM/OTN) topology optical cable sections, then is carried out in six steps, and finally a share risk link group (SRLG) table of a WDM/OTN layer and an SRLG table of an optical cable layer are obtained. According to the cross layer mapping management method of the share risk link group, the bearing relation between an upper layer topology and a bottom layer topology is adopted as the basis, the SRLG of an upper layer network is divided in an automatic mapping method, the problems of large arrangement and management difficulty of the share risk link group, slow human analysis response speed, not high accuracy and the like are effectively solved, main and standby routers of services are ensured to be independent by aid of clear risk link correlation, and service safety is improved.
Description
technical field [0001] The invention relates to a communication transmission network, in particular to a cross-layer mapping management method for shared risk link groups. Background technique [0002] As a basic network, the transport network carries IP data services, voice services, and individual / family / group key customer services. The level of service security depends on the reliability of the transport network. In order to improve network reliability and ensure service security, the most reliable way in the existing network is to establish two physically separated routes for service requests, the working route and the protection route. Once the working route fails, the service can be immediately switched to the protection route, thereby avoiding interruption of business. Physical separation of working and protection routes must rely on Shared Risk Link Group (SRLG) settings. [0003] A risk-sharing link group is a group of links carried on the same lower-layer network...
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