The method includes steps: (1) source node calculates routes of satisfying constrained condition for working route and protecting route respectively; (2) first, source node initiates signaling for building working route; when signaling reaches boundary node between domains of downstream network domain, the method calculates specific routes in this network domain of working route first, then builds connections in this domain of working route; (3) after working route point to point is built successfully, the source node initiates signaling for building protecting route; when signaling reaches boundary node between domains of downstream, the method asks boundary node between domains of working route for route information in this domain of working route; after obtaining response, the method calculates specific routes in this domain of protecting route and builds connections Route information in a domain is shielded for other domain The invention guarantees a straightway of communication

Cross-over end-to-end connection setting method for main apparatus protection in automatic exchange optical network

The invention provides a network topology layout method and the network management device thereof And the method comprises: obtaining connection relation between nodes, where the nodes include common nodes and gateway nodes; according to the connection relation, obtaining numbers of times of shortest path routing from common nodes to the nearest gateway nodes; calculating node coordinates and making the common nodes with the same number of times of shortest path routing compose an array, where the difference value between the numbers of times of shortest path routing between the adjacent arrays is equal to 1; displaying the common nodes and drawing the connection relation between the common nodes And the invention has the advantages of simple algorithm, low cost, and clear layers of network topology and clear network topology

Network structure topology layout method and network management device

A method for processing network resource and a network unit in an intelligent optical network , applying in the network mixed networked by the network unit of the traditional optical network and the network unit of the intelligent optical network, comprise: configuring at least one virtual TE link spanning at least one network unit of the traditional optical transmission network and connecting two network units of the two intelligent optical networks between two network units of the two intelligent optical networks connecting with a traditional optical transmission network, each network unit of the two intelligent optical networks connecting with the traditional optical network respectively acquires the information of the virtual TE link spanning the traditional optical transmission network and connecting with another network unit of the intelligent optical network, and distributes the information of the virtual TE link in the said intelligent optical network. The said network unit of the intelligent optical network comprises: a virtual traffic-engineering link configuring module and a virtual traffic-engineering link information-distributing module. The optical connection is established by using the network resource of the traditional optical transmission network, and when there is a fault, the interrupted service is protected and restored by using the network resource of the traditional optical transmission network.

A method for processing network resource, a network unit in an intelligent optical network thereof

The invention relates to a communication multi-level protection method based on an intelligent optical network, and belongs to the technical field of a communication network. The method provided by the invention utilizes programmable and automatic adjustment functions of the intelligent optical network, uses characteristics of large transmission bandwidth and small delay of the optical network, carries out differentiated protection on operation requests with different importance degrees, and solves a problem that breakage of a single optical fiber easily results in severe impacts. On the one hand, the level differentiated protection can provide targeted protection, high-level operations adopt services with a high protection level, low-level operations adopt services with a low protection level, the resource utilization rate is improved, the difficulty in searching a protection path is simplified, and the operation time is reduced; and on the other hand, the utilization rate of the bandwidth is improved through a shared protection function of the medium protection level and the low protection level, and corresponding reserved network resources can also be enabled to carry out dormancy, thereby saving electric energy consumption.

Communication multi-level protection method based on intelligent optical network

A method for processing the resource information of the Traffic Engineering link is provided which includes that: the network node obtains the multiple protection attributes of the TE (Traffic Engineering) link and the corresponding bandwidth resource information; the network node issues the obtained multiple protection attributes of the TE link and the corresponding bandwidth resource information in the network. Using the embodiment of the present invention, all the network nodes can get the resource information of the TE link in the whole network and the control plane can transfer all kinds of protection reverse technology compatibly.

A method for processing the resource information of the traffic engineering link

This invention discloses a method for acquiring paths with protection entities in the intelligent optical network including the following steps: setting up different TE links for data links of different protection kinds, setting up a same TE link for the data links having the same protection attribute and belonging to the same protect entity, carrying out flooding of the protection entity information to diffuse the protection entity information in the entire route zone and acquiring paths with protection entities in the network according to the information.

Method for obtaining path with protective body in intelligent optical network

A method for achieving a path with protection entity in the intelligent optical network. The invention relates to a method for achieving a path with protection entity in the intelligent optical network, wherein the method includes the following steps: a. establishing different traffic engineering TE links for the data links of different types of protection, establishing the data links which have the same protection attributes and belong to the same protection entities to be the same TE links; b. overflowing the protection entity information of the built TE links, spread out the protection entity information in the whole route area; c. achieving the path with protection entity in the said network according to the overflowed protection entity information. Using the invention, we can achieve the shortest path which satisfies the condition of restriction based on transmitting the inherent protection types of the network, and by the method of achieving protection topological in advance, effectively decrease the times of repeated calculation and increase the efficiency of the network.

A method for achieving a path with protection entity in the intelligent optical network

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Method for obtaining path with protective body in intelligent optical network

A method for achieving a path with protection entity in the intelligent optical network