Cross-level multiplexing end-to-end configuration method and device

Abstract

The invention provides a cross-level multiplexing end-to-end configuration method and a cross-level multiplexing end-to-end configuration device, which are applied to the technical field of communication. The method comprises the following steps: carrying out cross-network path search according to a network topology and a cross-network routing search condition of the hybrid network to obtain a cross-network path search result; the hybrid network comprises an optical transport network OTN and a synchronous digital series network SDH; creating a virtual container VC4 channel layer path corresponding to the OTN in the hybrid network according to the cross-network path search result; according to a source node and a destination node of data transmission, VC12 path search is performed, a VC4 channel layer path is multiplexed, and a virtual container VC12 channel layer path between the source node and the destination node is created. According to the method provided by the embodiment of the invention, cross-level multiplexing service configuration from the VC12 to the VC4 is realized, and the problems that in the prior art, service configuration is completed by using a single-station configuration mode for a hybrid network of low-bandwidth SDH equipment and high-bandwidth OTN equipment, the configuration process is too tedious, and errors are easy to occur are solved.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to an end-to-end configuration method and device for cross-level multiplexing. Background Art

[0002] In the field of communication technology, with the demand for high-quality private lines such as video calls, video conferencing, and high-definition video, the construction of high-bandwidth communication networks has become an inevitable trend. Currently, the core aggregation and dispatching networks newly built by operators are mainly based on high-bandwidth OTN equipment, but a large number of low-bandwidth SDH equipment in the existing communication network will take a long time to retire. At the same time, the cost of network construction must also be considered. Reusing old equipment can avoid waste of resources, which is also a solution adopted by many operators.

[0003] In the related art, for a mixed network of low-bandwidth SDH equipment and high-bandwidth OTN equipment, a single-station configuration method is used to complete service configuration. The configuration process is too cumbersome and prone to errors. Summary of the invention

[0004] The present invention provides a cross-level multiplexing end-to-end configuration method and device, which are used to solve the defects of complicated service configuration and high error rate in a hybrid network in the prior art.

[0005] The present invention provides an end-to-end configuration method for cross-level multiplexing, comprising the following steps.

[0006] According to the network topology of the hybrid network and the cross-network routing search conditions, a cross-network path search is performed to obtain a cross-network path search result; According to the cross-network path search result, a virtual container VC4 path layer path corresponding to the OTN network in the hybrid network is created; the hybrid network includes an optical transport network OTN and a synchronous digital hierarchy network SDH; According to the source node and the sink node of the data transmission, a VC12 path search is performed, the VC4 path layer path is multiplexed, and a virtual container VC12 path layer path between the source node and the sink node is created.

[0007] According to a cross-level multiplexing end-to-end configuration method provided by the present invention, the cross-network path search is performed according to the network topology of the hybrid network and the cross-network routing search condition to obtain the cross-network path search result, including: Determine an edge node in the hybrid network according to the network topology of the hybrid network; the edge node is a node where the OTN network and the SDH network in the hybrid network intersect; According to the edge nodes in the hybrid network and the cross-network routing search conditions, a cross-network path search is performed to obtain a cross-network path search result.

[0008] According to an end-to-end configuration method for cross-level multiplexing provided by the present invention, the cross-network routing search condition includes: The optical channel data unit (ODU) timeslot granularity used across OTN networks.

[0009] According to a cross-level multiplexing end-to-end configuration method provided by the present invention, after determining the edge nodes in the hybrid network according to the network topology of the hybrid network, the method further includes: Add identification information to the edge node in the hybrid network; the identification information is used to indicate that the node type is an edge node.

[0010] According to an end-to-end configuration method for cross-level multiplexing provided by the present invention, the VC12 path search is performed according to the source node and the sink node of the data transmission, the VC4 path layer path is multiplexed, and the VC12 path layer path between the source node and the sink node is created, including: In the case where the OTN network in the hybrid network corresponds to multiple VC4 path layer paths, determining a target VC4 path layer path from the multiple VC4 path layer paths according to a source node and a sink node of data transmission; The target VC4 path layer path is multiplexed to create a VC12 path layer path between the source node and the sink node.

[0011] According to an end-to-end configuration method for cross-level multiplexing provided by the present invention, the hybrid network includes at least one of the following: A hybrid network consisting of an OTN network ring and an SDH network; A hybrid network that is an OTN network cutting off the SDH network; The OTN network is a hybrid network that is an interlaced SDH network.

[0012] The present invention also provides an end-to-end configuration device for cross-level multiplexing, comprising the following modules: A search module, used to perform cross-network path search according to the network topology of the hybrid network and the cross-network routing search conditions, and obtain cross-network path search results; A creation module, used for creating a virtual container VC4 path layer path corresponding to the OTN network in a hybrid network according to the cross-network path search result; the hybrid network includes an optical transport network OTN and a synchronous digital hierarchy network SDH; The multiplexing module is used to multiplex the VC4 path layer path according to the source node and the sink node of the data transmission, and create a virtual container VC12 path layer path between the source node and the sink node.

[0013] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, an end-to-end configuration method for cross-level multiplexing as described above is implemented.

[0014] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the end-to-end configuration method for cross-level multiplexing as described in any one of the above is implemented.

[0015] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements any of the above-mentioned end-to-end configuration methods for cross-level multiplexing.

[0016] The end-to-end configuration method and device for cross-level multiplexing provided by the present invention perform cross-network path search according to the network topology and cross-network route search conditions of the hybrid network to obtain the cross-network path search result; create a virtual container VC4 channel layer path corresponding to the OTN network in the hybrid network according to the cross-network path search result; perform VC12 path search according to the source node and the sink node of the data transmission, reuse the VC4 channel layer path, and create a virtual container VC12 channel layer path between the source node and the sink node, thereby conveniently and quickly realizing the cross-level multiplexing service configuration of VC12 to VC4, so that the edge equipment of the core convergence network supports the cross-level multiplexing of VC12 to VC4, effectively achieving the seamless integration of the service configuration of the low-bandwidth SDH equipment network and the high-bandwidth OTN equipment network, and solving the problem that the hybrid network of low-bandwidth SDH equipment and high-bandwidth OTN equipment uses a single-station configuration method to complete the service configuration in the prior art, and the configuration process is too cumbersome and prone to errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the network topology of the hybrid network provided by the present invention.

[0019] Figure 2 It is a schematic diagram of the device cross matrix provided by the present invention.

[0020] Figure 3 This is one of the schematic diagrams of the end-to-end configuration method for cross-level multiplexing provided by the present invention.

[0021] Figure 4It is a schematic diagram of the cross-network path search provided by the present invention.

[0022] Figure 5 This is the second schematic diagram of the end-to-end configuration method for cross-level multiplexing provided by the present invention.

[0023] Figure 6 It is a schematic diagram of an end-to-end configuration device for cross-level multiplexing provided by the present invention.

[0024] Figure 7 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Combine the following Figure 1-Figure 7 The end-to-end configuration method and device of cross-level multiplexing of the present invention are described.

[0027] In order to facilitate a clearer understanding of the technical solutions of the embodiments of the present application, some technical contents related to the embodiments of the present application are first introduced.

[0028] In the field of communication technology, with the demand for high-quality private lines such as video calls, video conferencing, and high-definition video, the construction of high-bandwidth communication networks has become an inevitable trend. Currently, the core aggregation and dispatching networks newly built by operators are mainly based on high-bandwidth OTN equipment, but a large number of low-bandwidth SDH equipment in the existing communication network will take a long time to retire. At the same time, the cost of network construction must also be considered. Reusing old equipment can avoid waste of resources, which is also a solution adopted by many operators.

[0029] The mixed networking of low-bandwidth SDH equipment and high-bandwidth OTN equipment has become a typical network topology. Customer services on low-bandwidth SDH equipment are usually based on VC12 cross-connection. If all low-order VC12 cross-connections are scheduled or aggregated on the core aggregation equipment, the core aggregation equipment must support large-capacity VC12 cross-connection capacity, which will significantly increase the cost of the core aggregation equipment.

[0030] In the related art, for a hybrid network of low-bandwidth SDH equipment and high-bandwidth OTN equipment, using a single-station approach to complete service configuration is too cumbersome and prone to errors, especially in the VC12 to VC4 cross-level multiplexing service configuration at the edge of the core network and the service configuration that passes through the hybrid SDH and OTN network.

[0031] For example, a typical topology diagram of a low-bandwidth SDH network and a high-bandwidth OTN device hybrid network is shown in Figure 1 As shown. A, B, C, and D are high-bandwidth OTN ring networks, and the four points A to D are edge devices; K and L are ring-chain topologies; H, I, and J are low-bandwidth SDH ring networks that are tangent to the OTN ring network; and E, F, and G are low-bandwidth SDH rings that intersect the OTN ring network. Note: A.4.1 represents port 1 of slot 4 of device A.

[0032] Taking the implementation of the VC12 protection service from E.2.1 to J.2.1 as an example, the specific process of the single-station configuration method is explained.

[0033] 1. Single-station configuration

[0034] (1) Configure the VC12 SNCP protection service from E.2.1 to E.3.1 and E.3.2 on E; (2) Configure the VC12 common pass-through service from F.3.2 to F.3.1 on F; (3) Configure the VC12 common pass-through service from G.3.2 to G.3.1 on G; (4) A, C, and D are edge OTN devices between the SDH network and the OTN network. The service configuration is relatively complex. The detailed description is given below using device A as an example. The services of C and D are configured in the same way.

[0035] 3-CARD is an SDH card, and 4-CARD is an OTN card.

[0036] a) Cross Matrix Description

[0037] Add a VC4 cross matrix and a VC12 cross matrix to the equipment respectively; The left VC4 cross-connect matrix has four STM64 ports numbered 1, 3, 5, and 7; The VC12 cross-connect matrix on the right has four STM64 ports numbered 2, 4, 6, and 8; 1-2, 3-4, 5-6, 7-8 are one-to-one corresponding ports, which can be understood as direct optical fiber connection; The tributary board establishes a VC4 cross-connection with the VC4 cross-connect matrix, and the VC12 cross-connection is completed in the VC12 cross-connect matrix.

[0038] b) Configure the VC12 to VC4 cross-level multiplexing service of A.3.1 to A.4.1 and A.4.2 (Note: A.3.1 refers to port 1 in slot 4 of device A)

[0039] like Figure 2As shown in the figure, configure VC4 crossover (red line), taking the first VC4 as an example: 3-CARD-1-VC4:1--VC4 cross matrix-1-VC4:1

[0040] 4-CARD-STM16:1-VC4:1 (main), 4-UO2X-STM16:5-VC4:1 (backup) --VC4 cross matrix-3-VC4:1

[0041] Configure VC12 crossover (blue line), taking the first VC12 of the first VC4 as an example: VC12 cross matrix-2-VC4:1-VC12:1--VC12 cross matrix-4-VC4:1-VC12:1

[0042] c) Configure OTN services (purple line)

[0043] If ODU1 is used to carry VC services on an OTN aggregation ring, two OTN services need to be configured.

[0044] 4-CARD-STM16:1--4-CARD-1-ODU1:1

[0045] 4-CARD-STM16:5--4-CARD-2-ODU1:1

[0046] (5) Point B is not an edge OTN device, and only the pass-through ODU1 service from B.4.1 to B.4.2 needs to be configured; (6) Configure the VC12 common pass-through service from H.3.1 to F.3.2 on H; (7) Configure the VC12 common pass-through service from I.3.2 to I.3.1 on I; (8) Configure the VC12 SNCP protection service from J.2.1 to J.3.1 and J.3.2 on J.

[0047] From the configuration method of the single-station part, it can be seen that the configuration process is very complicated. It is necessary to align the ports and time slots of each network element one by one. In addition, on the edge device of the OTN aggregation ring, it is necessary to configure the complex cross-level multiplexing service from VC12 to VC4, and finally configure the OTN service. In other words, for the above-mentioned mixed network of low-bandwidth SDH equipment and high-bandwidth OTN equipment, it is too complicated and error-prone to complete the service configuration using the single-station method.

[0048] Figure 3 This is one of the flow charts of the end-to-end configuration method for cross-level multiplexing provided by the present invention, such as Figure 3 As shown, the method includes the following: Step 301: perform an inter-network path search according to the network topology of the hybrid network and the inter-network route search condition to obtain an inter-network path search result; the hybrid network includes an optical transport network OTN and a synchronous digital hierarchy network SDH.

[0049] Specifically, in the related art, for a hybrid network of low-bandwidth SDH equipment and high-bandwidth OTN equipment, a single-station configuration method is used to complete service configuration, and the configuration process is too cumbersome and prone to errors.

[0050] In order to solve the above problem, in the embodiment of the present application, a cross-network path search is first performed according to the network topology of the hybrid network and the cross-network route search condition to obtain the cross-network path search result. The hybrid network includes an optical transport network OTN and a synchronous digital hierarchy network SDH. For example, the network topology of the hybrid network is as follows: Figure 1 As shown. Alternatively, the traditional end-to-end configuration method is usually implemented by layering, first creating an OTN end-to-end service, and then creating an SDH end-to-end service based on the OTN end-to-end service. This traditional configuration method is obviously not suitable for the current hybrid network. Figure 1 As shown, the four nodes AD in the hybrid network are nodes where the OTN network and the SDH network intersect, that is, nodes that are multiplexed by SDH and OTN, that is, cross-network nodes. In this application, a cross-network path search is first performed to obtain a cross-network path search result, that is, to obtain a routing result between the four nodes AD, and then according to the cross-network path search result, a virtual container VC4 channel layer path corresponding to the OTN network in the hybrid network can be created to complete the OTN service on the edge node of the hybrid network. Optionally, the cross-network path search result may include multiple routing results. Optionally, the cross-network routing search condition may be a specified or restrictive condition in the path search, which is not specifically limited in the embodiments of the present application.

[0051] Step 302: Create a virtual container VC4 path layer path corresponding to the OTN network in the hybrid network according to the cross-network path search result.

[0052] Specifically, after performing a cross-network path search based on the network topology and cross-network route search conditions of the hybrid network and obtaining the cross-network path search results, the embodiment of the present application further creates a virtual container VC4 path layer path corresponding to the OTN network in the hybrid network based on the cross-network path search results. Figure 1As shown, the VC4 path layer trail service is a service from a VC4 of OTN edge equipment A.3.1 and C.3.1 to a VC4 of OTN edge equipment D.3.1 and D.3.2, which covers all services on A, B, C, and D, that is, it includes the cross-network multiplexing service from A.3.1 to A4.1 and A.4.2, the through-OTN service from B.4.1 to B.4.1, the cross-network multiplexing service from C.3.1 to C.4.1 and C.4.2, and the cross-level multiplexing service from D.3.1 and D.3.2 to D.4.1 and D.4.1.

[0053] Step 103: Perform VC12 path search according to the source node and the sink node of the data transmission, reuse the VC4 path layer, and create a virtual container VC12 path layer path between the source node and the sink node.

[0054] Specifically, the embodiment of the present application can further create a virtual container VC12 channel layer path between the source node and the destination node by reusing the created VC4 channel layer path, thereby conveniently and quickly realizing the cross-level multiplexing service configuration from VC12 to VC4, and effectively achieving seamless integration of the service configuration of the low-bandwidth SDH equipment network and the high-bandwidth OTN equipment network through the cross-level multiplexing of VC12 to VC4 of the edge device of the core aggregation network, solving the problem that the prior art uses a single-station configuration method to complete the service configuration of the hybrid network of low-bandwidth SDH equipment and high-bandwidth OTN equipment, and the configuration process is too cumbersome and prone to errors. Optionally, as Figure 1 As shown, the VC12 service in this application is created based on the VC4 channel layer service, covering all services on E, F, G, H, I, and J, that is, the SNCP service from E.2.1 to E.3.1 and E.3.2, the pass-through service from F.3.1 to F.3.2 and G.3.1 to G.3.2, the pass-through service from H.3.1 to H.3.2 and I.3.2 to H.3.1, and the SNCP service from J.2.1 to J.3.1 and J.3.2, and at the same time covers the VC12 scheduling service of the internal cross matrix on the edge nodes A, C, and D.

[0055] The method of the above embodiment performs cross-network path search according to the network topology of the hybrid network and the cross-network route search conditions to obtain the cross-network path search result; creates the virtual container VC4 channel layer path corresponding to the OTN network in the hybrid network according to the cross-network path search result; performs VC12 path search according to the source node and the sink node of the data transmission, reuses the VC4 channel layer path, and creates the virtual container VC12 channel layer path between the source node and the sink node, thereby conveniently and quickly realizing the cross-level multiplexing service configuration of VC12 to VC4, so that the edge device of the core aggregation network supports the cross-level multiplexing of VC12 to VC4, effectively achieving the seamless integration of the service configuration of the low-bandwidth SDH equipment network and the high-bandwidth OTN equipment network, and solving the problem that the hybrid network of low-bandwidth SDH equipment and high-bandwidth OTN equipment uses a single-station configuration method to complete the service configuration in the prior art, and the configuration process is too cumbersome and prone to errors.

[0056] In one embodiment, a cross-network path search is performed according to the network topology of the hybrid network and the cross-network route search condition to obtain a cross-network path search result, including: According to the network topology of the hybrid network, edge nodes in the hybrid network are determined; edge nodes are nodes where the OTN network and the SDH network in the hybrid network intersect; According to the edge nodes in the hybrid network and the cross-network routing search conditions, a cross-network path search is performed to obtain a cross-network path search result.

[0057] Specifically, in the embodiment of the present application, the edge nodes in the hybrid network are first determined according to the network topology of the hybrid network. Figure 1 As shown, the four nodes AD in the hybrid network are the nodes where the OTN network and the SDH network intersect, that is, the cross-network nodes of SDH and OTN multiplexing and the edge nodes in the hybrid network. Optionally, after determining the edge nodes in the hybrid network, a cross-network path search can be further performed based on the edge nodes in the hybrid network and the cross-network routing search conditions to obtain the cross-network path search results. Optionally, the cross-network routing search conditions are the optical channel data unit ODU time slot granularity used when crossing the OTN network.

[0058] For example, Figure 4 As shown, according to the edge nodes in the hybrid network and the cross-network routing search conditions, a cross-network path search is performed to obtain the specific process of the cross-network path search result as follows: a) Select the source and sink nodes.

[0059] b) Select the ODU timeslot granularity (ODU0, ODU1, ODU2, etc.) used across the OTN ring network (A~D).

[0060] c) Perform route search to effectively solve the cross-network routing problem. Optionally, the OTN connection between A and D is divided according to the time slot granularity selected in step b), which is equivalent to n independent SDH connections. Assuming that A and D are connected by OTU2 ports, when the ODU time slot granularity selected in step (b) is ODU1, between A and D, it is equivalent to having 4 STM16 SDH port connections between every two points.

[0061] d) Automatically complete OTN services on nodes A~D based on the searched routes.

[0062] The method of the above embodiment determines the edge nodes in the hybrid network according to the network topology of the hybrid network; performs a cross-network path search according to the edge nodes in the hybrid network and the cross-network routing search conditions to obtain the cross-network path search results, which effectively solves the cross-network routing problem. Furthermore, according to the cross-network path search results, a virtual container VC4 channel layer path corresponding to the OTN network in the hybrid network can be created to complete the OTN service on the edge node of the hybrid network.

[0063] In one embodiment, after determining the edge nodes in the hybrid network according to the network topology of the hybrid network, the method further includes: Identification information is added to the edge node in the hybrid network; the identification information is used to indicate that the node type is an edge node.

[0064] Specifically, in an embodiment of the present application, identification information is added to the edge nodes in the hybrid network, such as identifying a "channel edge point" on the edge node to indicate that the node is an edge node, so that when performing cross-network routing searches, edge nodes can be determined more accurately and quickly, thereby effectively improving the efficiency of cross-network routing searches and improving the efficiency of creating the virtual container VC4 channel layer path corresponding to the OTN network in the hybrid network.

[0065] In one embodiment, according to the source node and the sink node of the data transmission, a VC12 path search is performed, a VC4 path layer path is multiplexed, and a VC12 path layer path between the source node and the sink node is created, including: In the case where the OTN network in the hybrid network corresponds to multiple VC4 path layer paths, a target VC4 path layer path is determined from the multiple VC4 path layer paths according to a source node and a sink node of data transmission; According to the result of the VC12 path search, the target VC4 path layer path is multiplexed to create a VC12 path layer path between the source node and the sink node.

[0066] Specifically, Figure 1As shown, when performing cross-network route search, when the selected ODU time slot granularity is ODU1, between A~D, it is equivalent to having 4 STM16 SDH port connections between every two points, and there can be multiple routing results and corresponding multiple VC4 channel layer paths between A~D. In the case where the OTN network in the hybrid network corresponds to multiple VC4 channel layer paths, the present application performs VC12 path search according to the source node and destination node of data transmission (such as source node E.2.1 and destination node J.2.1). Specifically, the path service from any VC12 of E.2.1 to any VC12 of J.2.1, if E.3.1 to F.3.2, F.3.1 to A.3.1, E.3.2 to G.3.2, and G.3.1 to C.3.1 are connected by SDH ports with STM-16 rate, that is, each route has 16 VC4 options. Similarly, for D.3.1 to H.3.1, When H.3.2 to J.3.2, D.3.2 to I.3.2, and I.3.1 to J.3.1 are connected by SDH ports with STM-16 rate, that is, each route also has 16 VC4 options, then the corresponding VC12 path from E.2.1 to J.2.1 has 16 VC4 channel layer paths to choose from, that is, the target VC4 channel layer path is determined from multiple VC4 channel layer paths, and by multiplexing the target VC4 channel layer path and creating a VC12 cross-scheduling service on the internal cross-matrix on the edge nodes A, C, and D, the VC12 channel layer path between the source node and the destination node can be accurately and efficiently created. Optionally, the target VC4 channel layer path can be a path among multiple VC4 channel layer paths that has the shortest data transmission distance between the source node and the destination node, or it can be a VC4 channel layer path that is fault-free after diagnosis, thereby achieving the effect of accurately determining the target VC4 channel layer path from multiple VC4 channel layer paths, and furthermore, more efficiently creating a virtual container VC12 channel layer path between the source node and the destination node, and more conveniently and quickly realizing the VC12 to VC4 cross-level multiplexing service configuration.

[0067] The method of the above embodiment, when the OTN network in the hybrid network corresponds to multiple VC4 path layer paths, determines the target VC4 path layer path from multiple VC4 path layer paths when performing VC12 path search according to the source node and the sink node of the data transmission, thereby achieving the effect of accurately determining the target VC4 path layer path from multiple VC4 path layer paths, and furthermore, can more efficiently create the virtual container VC12 path layer path between the source node and the sink node, and more conveniently and quickly implement the VC12 to VC4 cross-level multiplexing service configuration.

[0068] In one embodiment, the hybrid network includes at least one of the following: A hybrid network consisting of an OTN network ring and an SDH network; A hybrid network that is an OTN network cutting off the SDH network; The OTN network is a hybrid network that is an interlaced SDH network.

[0069] Specifically, the hybrid network in the embodiments of the present application includes but is not limited to a hybrid network of an OTN network ring with an SDH network, a hybrid network of an OTN network ring-cut SDH network, and a hybrid network of an OTN network ring-intersecting SDH network. That is, the end-to-end configuration method of cross-level multiplexing of the present application can be compatible with a variety of complex topology forms and applied in different hybrid network scenarios, greatly improving the operator's operation and maintenance efficiency.

[0070] For example, Figure 1 As shown, it can be applied to ring-with-chain (A~D ring with LK chain), tangent ring (A~D ring tangent to HIJ ring), and intersecting ring (A~D ring intersecting to EFG ring). Among them, the OTN core network is equipped with different forms of SDH subnets, and the VC4 channel layer service forms will be different.

[0071] VC4 channel layer services can be divided into three types of services: a) Point to point

[0072] Point-to-point is the traditional SDH / OTN service form, that is, one source and one destination.

[0073] The three types of SDH subnets, ring-chain to ring-chain, ring-chain to tangential ring, and tangential ring to tangential ring, combined with the core OTN network are applicable to this scenario.

[0074] b) Point to multipoint

[0075] Point-to-multipoint, that is, one source and two destinations or two sources and one destination, is not a traditional SDH / OTN service form, but is more common in the data communication field.

[0076] The two types of SDH subnets, ring-with-chain to intersecting rings and ring-with-chain to tangential rings, are suitable for this scenario when combined with the core OTN network.

[0077] b) Multipoint to Multipoint

[0078] Point-to-multipoint, that is, multi-source and multi-destination, is not a traditional SDH / OTN service form. It is more common in the data communication field, similar to ELAN service or VPLS (Virtual Private LAN Service) service.

[0079] The two types of SDH subnets, tangential ring to tangential ring and intersecting ring to intersecting ring, combined with the core OTN network are applicable to this scenario.

[0080] For VC4 channel layer trails, a "channel edge point" option is added to identify edge nodes to be compatible with point-to-multipoint and multipoint-to-multipoint service scenarios. For source and sink nodes, you can select multi-source or multi-sink by selecting this option. The cross-level multiplexing service configuration from VC12 to VC4 is completed at the source and sink edge nodes, and the through-OTN service creation is completed at the non-edge nodes.

[0081] In the method of the above embodiment, the end-to-end configuration method of cross-level multiplexing of the present application can be compatible with a variety of complex topology forms, applied in different hybrid network scenarios, and greatly improve the operator's operation and maintenance efficiency.

[0082] For example, this application is based on Figure 1 and Figure 5 Taking this as an example, the end-to-end configuration method of the VC12 to VC4 cross-level multiplexing service from E.2.1 to J.2.1 is specifically described. The specific process is as follows: As can be seen from the topology diagram, the channel layer path is A.3.1, C.3.1 to D.3.1, D.3.2, that is, a multi-source and multi-destination service form. Therefore, the "channel edge point" must be selected for both the source and destination nodes.

[0083] If the OTN ring network plans to use OTN services with ODU1 granularity to carry VC services, you need to select OTN timeslot granularity as ODU1 to perform cross-network path search.

[0084] (1) Select OTN service level ODU1.

[0085] (2) Select VC4 channel layer path source A.3.1, select "Channel edge point", and select multi-source C.3.1.

[0086] (3) Select VC4 path layer path sink D.3.1, select "Path edge point", and select multi-sink D.3.2.

[0087] (4) Perform cross-network routing search and connect each OTN port between A and D, which is equivalent to connecting four independent STM16 SDH ports for search.

[0088] (5) Complete the VC4 channel layer trail creation.

[0089] (6) Select source E.2.1 and sink J.2.1, set the service level to VC12, select the path type based on VC4 path layer path, and search for all VC4 path layer paths that meet the conditions.

[0090] (7) Select the target VC4 channel layer path to complete the VC12 channel layer path creation.

[0091] The method of the above embodiment performs cross-network path search according to the network topology of the hybrid network and the cross-network route search conditions to obtain the cross-network path search result; creates the virtual container VC4 channel layer path corresponding to the OTN network in the hybrid network according to the cross-network path search result; performs VC12 path search according to the source node and the sink node of the data transmission, reuses the VC4 channel layer path, and creates the virtual container VC12 channel layer path between the source node and the sink node, thereby conveniently and quickly realizing the cross-level multiplexing service configuration of VC12 to VC4, so that the edge device of the core aggregation network supports the cross-level multiplexing of VC12 to VC4, effectively achieving the seamless integration of the service configuration of the low-bandwidth SDH equipment network and the high-bandwidth OTN equipment network, and effectively solving the problem that the service configuration of the hybrid network of low-bandwidth SDH equipment and high-bandwidth OTN equipment in the prior art is completed by using a single-station configuration method, and the configuration process is too cumbersome and prone to errors.

[0092] The end-to-end configuration device for cross-level multiplexing provided by the present invention is described below. The end-to-end configuration device for cross-level multiplexing described below and the end-to-end configuration method for cross-level multiplexing described above can be referred to each other. Figure 6 As shown, including: A search module 610, configured to perform a cross-network path search based on the network topology of the hybrid network and the cross-network routing search condition, and obtain a cross-network path search result; A creation module 620 is used to create a virtual container VC4 path layer path corresponding to the OTN network in the hybrid network according to the cross-network path search result; the hybrid network includes an optical transport network OTN and a synchronous digital hierarchy network SDH; The multiplexing module 630 is used to perform VC12 path search according to the source node and the sink node of the data transmission, multiplex the VC4 path layer, and create a virtual container VC12 path layer path between the source node and the sink node.

[0093] Optionally, the search module 610 is specifically used to determine an edge node in the hybrid network according to the network topology of the hybrid network; the edge node is a node where the OTN network and the SDH network in the hybrid network intersect; According to the edge nodes in the hybrid network and the cross-network routing search conditions, a cross-network path search is performed to obtain a cross-network path search result.

[0094] Optionally, the cross-network routing search conditions include: The optical channel data unit (ODU) timeslot granularity used across OTN networks.

[0095] Optionally, the search module 610 is further used to add identification information to the edge node in the hybrid network; the identification information is used to indicate that the node type is an edge node.

[0096] Optionally, the multiplexing module 630 is specifically used to perform a VC12 path search according to a source node and a sink node of data transmission, and determine a target VC4 path layer path from the multiple VC4 path layer paths when the OTN network in the hybrid network corresponds to multiple VC4 path layer paths; According to the search result of the VC12 path, the target VC4 path layer path is multiplexed to create a VC12 path layer path between the source node and the sink node.

[0097] Optionally, the hybrid network includes at least one of the following: A hybrid network consisting of an OTN network ring and an SDH network; A hybrid network that is an OTN network cutting off the SDH network; The OTN network is a hybrid network that is an interlaced SDH network.

[0098] Figure 7 An example of a physical structure diagram of an electronic device is provided, and the electronic device may include: a processor 710, a communication interface 720, a memory 730, and a communication bus 740, wherein the processor 710, the communication interface 720, and the memory 730 communicate with each other through the communication bus 740. The processor 710 may call the logic instructions in the memory 730 to execute an end-to-end configuration method for cross-level multiplexing, and the method includes: performing a cross-network path search according to the network topology and cross-network routing search conditions of the hybrid network to obtain a cross-network path search result; the hybrid network includes an optical transport network OTN and a synchronous digital hierarchy network SDH; according to the cross-network path search result, creating a virtual container VC4 path layer path corresponding to the OTN network in the hybrid network; according to the source node and the sink node of the data transmission, multiplexing the VC4 path layer path to create a virtual container VC12 path layer path between the source node and the sink node.

[0099] In addition, the logic instructions in the above-mentioned memory 730 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0100] On the other hand, the present invention also provides a computer program product, which includes a computer program, and the computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the end-to-end configuration method for cross-level multiplexing provided by the above methods, and the method includes: performing a cross-network path search according to the network topology and cross-network routing search conditions of the hybrid network to obtain a cross-network path search result; the hybrid network includes an optical transport network OTN and a synchronous digital series network SDH; based on the cross-network path search result, creating a virtual container VC4 channel layer path corresponding to the OTN network in the hybrid network; based on the source node and the destination node of the data transmission, multiplexing the VC4 channel layer path to create a virtual container VC12 channel layer path between the source node and the destination node.

[0101] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the end-to-end configuration method for cross-level multiplexing provided by the above-mentioned methods, the method comprising: performing a cross-network path search according to the network topology and cross-network routing search conditions of the hybrid network to obtain a cross-network path search result; the hybrid network includes an optical transport network OTN and a synchronous digital series network SDH; based on the cross-network path search result, creating a virtual container VC4 channel layer path corresponding to the OTN network in the hybrid network; based on the source node and the destination node of the data transmission, multiplexing the VC4 channel layer path to create a virtual container VC12 channel layer path between the source node and the destination node.

[0102] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0103] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An end-to-end configuration method for cross-level multiplexing, It is characterized in that include: According to the network topology and inter-network route search conditions of the hybrid network, an inter-network path search is performed to obtain the inter-network path search result; the hybrid network includes an optical transport network OTN and a synchronous digital hierarchy network SDH; According to the cross-network path search result, a virtual container VC4 path layer path corresponding to the OTN network in the hybrid network is created; According to the source node and the sink node of the data transmission, a VC12 path search is performed, the VC4 path layer path is multiplexed, and a virtual container VC12 path layer path between the source node and the sink node is created.

2. The end-to-end configuration method for cross-level multiplexing according to claim 1, It is characterized in that The step of performing a cross-network path search according to the network topology of the hybrid network and the cross-network route search condition to obtain a cross-network path search result includes: Determine an edge node in the hybrid network according to the network topology of the hybrid network; the edge node is a node where the OTN network and the SDH network in the hybrid network intersect; According to the edge nodes in the hybrid network and the cross-network routing search conditions, a cross-network path search is performed to obtain a cross-network path search result.

3. The end-to-end configuration method for cross-level multiplexing according to claim 2, It is characterized in that The cross-network routing search conditions include: The optical channel data unit (ODU) timeslot granularity used across OTN networks.

4. The end-to-end configuration method for cross-level multiplexing according to claim 2, It is characterized in that After determining the edge nodes in the hybrid network according to the network topology of the hybrid network, it also includes: Add identification information to the edge node in the hybrid network; the identification information is used to indicate that the node type is an edge node.

5. The end-to-end configuration method for cross-level multiplexing according to any one of claims 1 to 4, It is characterized in that The step of multiplexing the VC4 path layer path according to the source node and the sink node of the data transmission to create a VC12 path layer path between the source node and the sink node includes: In the case where the OTN network in the hybrid network corresponds to multiple VC4 path layer paths, determining a target VC4 path layer path from the multiple VC4 path layer paths according to a source node and a sink node of data transmission; The target VC4 path layer path is multiplexed to create a VC12 path layer path between the source node and the sink node.

6. The end-to-end configuration method for cross-level multiplexing according to any one of claims 1 to 4, It is characterized in that The hybrid network includes at least one of the following: A hybrid network of OTN network ring and SDH network; A hybrid network that is an OTN network cutting off the SDH network; The OTN network is a hybrid network that loops the SDH network.

7. An end-to-end configuration device for cross-level multiplexing, It is characterized in that include: A search module, used to perform cross-network path search according to the network topology of the hybrid network and the cross-network routing search conditions, and obtain cross-network path search results; A creation module, used for creating a virtual container VC4 path layer path corresponding to the OTN network in a hybrid network according to the cross-network path search result; the hybrid network includes an optical transport network OTN and a synchronous digital hierarchy network SDH; The multiplexing module is used to multiplex the VC4 path layer path according to the source node and the sink node of the data transmission, and create a virtual container VC12 path layer path between the source node and the sink node.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, It is characterized in that When the processor executes the program, the end-to-end configuration method for cross-level multiplexing as described in any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, It is characterized in that When the computer program is executed by a processor, the end-to-end configuration method for cross-level multiplexing is implemented according to any one of claims 1 to 6.

10. A computer program product comprising a computer program, It is characterized in that When the computer program is executed by a processor, the end-to-end configuration method for cross-level multiplexing is implemented according to any one of claims 1 to 6.

Images