CN118555509A

CN118555509A - Fault self-healing method in high-reliability all-optical network

Info

Publication number: CN118555509A
Application number: CN202411021111.0A
Authority: CN
Inventors: 肖云; 李旭旭; 马玫; 宋暾昉; 何伟; 张乐; 李兴; 鲜秀明; 练睿; 高航; 刘艳; 张勇毅
Original assignee: State Grid Sichuan Electric Power Co Ltd
Current assignee: State Grid Sichuan Electric Power Co Ltd
Priority date: 2024-07-29
Filing date: 2024-07-29
Publication date: 2024-08-27

Abstract

The application provides a fault self-healing method in a high-reliability all-optical network, which belongs to the technical field of communication and is used for realizing high-reliability fault self-healing. The method comprises the following steps: the all-optical network controller determines that a faulty forwarding node exists on the main optical link, takes the faulty forwarding node as a center, determines M auxiliary optical links in a diffusion mode, and replaces the main optical link with the M auxiliary optical links to carry out optical path transmission; the main optical link comprises N forwarding nodes, wherein among the N forwarding nodes, the failed forwarding node is the xth forwarding node from the 2nd forwarding node to the (N-1) th forwarding node, and x is an integer from 2 to N-1; the M auxiliary optical links at least comprise a1 st forwarding node and an N th forwarding node in N forwarding nodes, the M auxiliary optical links do not comprise faulty forwarding nodes, and the numbers of forwarding nodes contained in any two auxiliary optical links in the M auxiliary optical links are different.

Description

Fault self-healing method in high-reliability all-optical network

Technical Field

The application relates to the field of communication, in particular to a fault self-healing method in a high-reliability all-optical network.

Background

An all-optical network is a network architecture based on optical transmission technology, in which all optical path transmission and processing is achieved by optical signals. The network architecture mainly comprises optical nodes, optical links, optical network management units and the like.

Key technologies of the all-optical network include: all-optical switching technology: the all-optical switching network realizes high-speed, high-efficiency and low-energy-consumption optical path transmission and processing through an optical switching technology, and is widely applied to the fields of data centers, communication networks, cloud computing and the like. Optical amplification technology: the optical amplifying network amplifies the optical signal through the optical amplifier, improves the distance and quality of optical signal transmission, and is commonly used in the fields of long-distance optical communication, optical sensors and the like. Optical demultiplexer technology: the optical splitter network splits an optical signal into a plurality of wavelengths through the optical splitter, so that the splitting and the combination of the optical signal are realized, and the optical splitter network is commonly used in the fields of an optical switching network, an optical amplifying network and the like. The application fields of the all-optical network include: long-distance transmission: the all-optical network can overcome the attenuation and distortion problems in the traditional optical fiber communication system, realize high-quality signal transmission and is widely applied to the long-distance optical fiber communication system. High capacity transmission: the all-optical network can realize high-capacity optical path transmission, and meet the rapid growth of modern communication demands, such as cloud computing, high-definition video, internet of things and other applications.

Advantages of all-optical networks include high transmission bandwidth: the optical fiber has the characteristic of high-speed transmission, can greatly improve the transmission speed of a network, and realizes large-area high-speed communication. The reliability is high: the optical fiber is used as a transmission medium, so that the influence of factors such as electromagnetic interference and the like can be effectively avoided, and the reliability and stability of optical path transmission are ensured. Support high-capacity information transmission: the method supports applications such as high-definition video, large optical path transmission, cloud computing and the like, and lays an important foundation for development of an information age.

However, for all-optical networks, once they fail, such as a forwarding node fails, the existing all-optical networks do not have a fault self-healing capability.

Disclosure of Invention

The embodiment of the application provides a fault self-healing method in a high-reliability all-optical network, which is used for realizing the high-reliability fault self-healing of the all-optical network.

In order to achieve the above purpose, the application adopts the following technical scheme:

In a first aspect, a fault self-healing method in a highly reliable all-optical network is provided, and the fault self-healing method is applied to an all-optical network controller, and the method includes: the all-optical network controller determines that a faulty forwarding node exists on the main optical link; the main optical link comprises N forwarding nodes, N is an integer greater than or equal to 3, among the N forwarding nodes, the failed forwarding node is the xth forwarding node from the 2nd forwarding node to the N-1 th forwarding node, and x is an integer from 2 to N-1; the all-optical network controller takes the failed forwarding node as a center, M auxiliary optical links are determined in a diffusion mode, M is an integer greater than or equal to 2, each of the M auxiliary optical links at least comprises a 1 st forwarding node and an N th forwarding node in N forwarding nodes, each of the M auxiliary optical links does not comprise the failed forwarding node, and the numbers of forwarding nodes contained in any two auxiliary optical links in the M auxiliary optical links are different; and the all-optical network controller uses M auxiliary optical links to replace the main optical link for optical path transmission.

Optionally, the all-optical network controller is configured to determine M auxiliary optical links by using a diffusion manner with a faulty forwarding node as a center, and includes: based on the rule that the number of forwarding nodes is sequentially increased, the all-optical network controller takes the failed forwarding node as a center, firstly determines the 1 st auxiliary optical link connected with the main optical link, then determines the 2 nd auxiliary optical link connected with the 1 st auxiliary optical link until the M-1 st auxiliary optical link connected with the M-1 st auxiliary optical link is determined, i is an integer from 1 to M, and under the condition that i traverses 1 to M, the number of forwarding nodes in the ith auxiliary optical link in the M auxiliary optical links is sequentially increased.

Optionally, the all-optical network controller uses the faulty forwarding node as a center, determines the 1 st auxiliary optical link connected with the main optical link, and then determines the 2 nd auxiliary optical link connected with the 1 st auxiliary optical link until determining the mth auxiliary optical link connected with the M-1 st auxiliary optical link, and includes: the all-optical network controller determines 2 forwarding nodes adjacent to the failed forwarding node in the main optical link, wherein the 2 forwarding nodes are the (x-1) th forwarding node and the (x+1) th forwarding node in the N forwarding nodes; the all-optical network controller determines K ₁ standby forwarding nodes which do not belong to a main optical link but are connected with 2 forwarding nodes from a topology network of the all-optical network, and determines a link formed by 1 st to x-1 st forwarding nodes, x+1st to M th forwarding nodes and K ₁ standby forwarding nodes in the main optical link as a1 st auxiliary optical link; the K ₁ is used for representing the number of standby forwarding nodes connected with the 2 forwarding nodes;

The all-optical network controller determines K ₂ standby forwarding nodes which do not belong to a main optical link but are connected with 2 forwarding nodes and 2 nodes in K ₁ standby forwarding nodes from a topology network of the all-optical network, and determines a link formed by the 1 st to the previous forwarding node in the 2 nodes and the latter forwarding node in the 2 nodes in the 1 st auxiliary optical link to the Mth forwarding node and the K ₂ standby forwarding nodes as a2 nd auxiliary optical link; the K ₂ is used for representing the number of standby forwarding nodes connected with at least 2 forwarding nodes in the 2 forwarding nodes and the K ₁ standby forwarding nodes;

Until it reaches; the all-optical network controller determines K _M standby forwarding nodes which do not belong to a main optical link but are connected with 2 nodes in M-1 forwarding nodes and K _M-1 standby forwarding nodes from a topological network of the all-optical network, and determines a previous forwarding node in 1 st to 2 nodes in M-1 auxiliary optical links and a next forwarding node in 2 nodes to an Mth forwarding node, and a link formed by the K _M standby forwarding nodes as an Mth auxiliary optical link; wherein, K ₁、K₂、K_M is an integer greater than or equal to 1, and when K ₁ is greater than or equal to 2, K ₁ standby forwarding nodes are sequentially connected, and the number of standby forwarding nodes sequentially increases from K ₁、K₂ to K _M.

Optionally, in the case of i traversal 1 to M-1, an i-th auxiliary optical link in the M auxiliary optical links is a redundant standby link of an i+1th auxiliary optical link in the M auxiliary optical links; on this basis, the method further comprises: the all-optical network controller sends indication information to the M auxiliary optical links, wherein the indication information is used for indicating that the optical path of the (i+1) th auxiliary optical link is switched to a redundant standby link of the (i+1) th auxiliary optical link, namely the bearing of the (i) th auxiliary optical link, under the condition that the forwarding node which does not belong to the (i) th auxiliary optical link in the (i+1) th auxiliary optical link fails.

Optionally, the optical network controller uses M auxiliary optical links to replace the main optical link for optical path transmission, including: the all-optical network controller shares the optical path originally transmitted by the main optical link to M auxiliary optical links for transmission, and each auxiliary optical link in the M auxiliary optical links transmits one sub-optical path in the optical path; and i is an integer from 1 to M, and under the condition that i traverses 1 to M, the load capacity of the sub-optical paths shared and borne by the ith auxiliary optical link in the M auxiliary optical links is sequentially reduced.

Optionally, the all-optical network controller is configured to determine M auxiliary optical links by using a diffusion manner with a faulty forwarding node as a center, and includes: based on the rule that the number of forwarding nodes is sequentially reduced, the all-optical network controller takes the failed forwarding node as a center, firstly determines the 1 st auxiliary optical link connected with the main optical link, then determines the 2 nd auxiliary optical link connected with the 1 st auxiliary optical link until the M-1 st auxiliary optical link connected with the M-1 st auxiliary optical link is determined, i is an integer from 1 to M, and under the condition that i traverses 1 to M, the number of forwarding nodes in the ith auxiliary optical link in the M auxiliary optical links is sequentially reduced.

Until it reaches; the all-optical network controller determines K _M standby forwarding nodes which do not belong to a main optical link but are connected with 2 nodes in 2 forwarding nodes and K _M-1 standby forwarding nodes from a topological network of the all-optical network, and determines a link formed by the 1 st to the 2 nodes in the M-1 st auxiliary optical link and the latter to the M forwarding nodes in the 2 nodes and the K _M standby forwarding nodes as an M auxiliary optical link; wherein, K ₁、K₂、K_M is an integer greater than or equal to 1, and when K _M is greater than or equal to 2, K _M standby forwarding nodes are sequentially connected, and the number of standby forwarding nodes is sequentially reduced from K ₁、K₂ to K _M.

Optionally, under the condition that i traverses 2 to M, the ith auxiliary optical link in the M auxiliary optical links is a part of redundant standby links of the i-1 th auxiliary optical link in the M auxiliary optical links; on this basis, the method further comprises: the all-optical network controller sends indication information to the M auxiliary optical links, wherein the indication information is used for indicating that the optical path of the ith auxiliary optical link is switched to a redundant standby link of the ith auxiliary optical link, namely the bearing of the ith auxiliary optical link, under the condition that the forwarding node which does not belong to the ith auxiliary optical link in the ith auxiliary optical link is in fault.

Optionally, the optical network controller uses M auxiliary optical links to replace the main optical link for optical path transmission, including: the all-optical network controller shares the optical path originally transmitted by the main optical link to M auxiliary optical links for transmission, and each auxiliary optical link in the M auxiliary optical links transmits one sub-optical path in the optical path; and i is an integer from 1 to M, and under the condition that i traverses 1 to M, the load capacity of the sub-optical paths shared and borne by the ith auxiliary optical link in the M auxiliary optical links is sequentially increased.

In a second aspect, a fault self-healing apparatus in a highly reliable all-optical network is provided, for use in an all-optical network controller, the apparatus being configured to: the all-optical network controller determines that a faulty forwarding node exists on the main optical link; the main optical link comprises N forwarding nodes, N is an integer greater than or equal to 3, among the N forwarding nodes, the failed forwarding node is the xth forwarding node from the 2nd forwarding node to the N-1 th forwarding node, and x is an integer from 2 to N-1; the all-optical network controller takes the faulty forwarding node as a center, determines M auxiliary optical links in a diffusion mode, wherein M is an integer greater than or equal to 2, each of the M auxiliary optical links at least comprises a1 st forwarding node and an N th forwarding node in N forwarding nodes, each of the M auxiliary optical links does not comprise the faulty forwarding node, i is an integer from 1 to M, and the number of forwarding nodes in an i-th auxiliary optical link in the M auxiliary optical links is sequentially increased under the condition that i traverses 1 to M; and the all-optical network controller uses M auxiliary optical links to replace the main optical link for optical path transmission.

Until it reaches; the all-optical network controller determines K _M standby forwarding nodes which do not belong to a main optical link but are connected with 2 nodes in 2 forwarding nodes and K _M-1 standby forwarding nodes from a topological network of the all-optical network, and determines a link formed by the 1 st to the 2 nodes in the M-1 st auxiliary optical link and the latter to the M forwarding nodes in the 2 nodes and the K _M standby forwarding nodes as an M auxiliary optical link; wherein, K ₁、K₂、K_M is an integer greater than or equal to 1, and when K ₁ is greater than or equal to 2, K ₁ standby forwarding nodes are sequentially connected, and the number of standby forwarding nodes sequentially increases from K ₁、K₂ to K _M.

Optionally, in the case of i traversal 1 to M-1, an i-th auxiliary optical link in the M auxiliary optical links is a redundant standby link of an i+1th auxiliary optical link in the M auxiliary optical links; on the basis, the device is configured to: the all-optical network controller sends indication information to the M auxiliary optical links, wherein the indication information is used for indicating that the optical path of the (i+1) th auxiliary optical link is switched to a redundant standby link of the (i+1) th auxiliary optical link, namely the bearing of the (i) th auxiliary optical link, under the condition that the forwarding node which does not belong to the (i) th auxiliary optical link in the (i+1) th auxiliary optical link fails.

Optionally, under the condition that i traverses 2 to M, the ith auxiliary optical link in the M auxiliary optical links is a part of redundant standby links of the i-1 th auxiliary optical link in the M auxiliary optical links; on the basis, the device is configured to: the all-optical network controller sends indication information to the M auxiliary optical links, wherein the indication information is used for indicating that the optical path of the ith auxiliary optical link is switched to a redundant standby link of the ith auxiliary optical link, namely the bearing of the ith auxiliary optical link, under the condition that the forwarding node which does not belong to the ith auxiliary optical link in the ith auxiliary optical link is in fault.

In summary, when there is a faulty forwarding node on the primary optical link, the all-optical network controller may determine M secondary optical links by using the faulty forwarding node as a center in a flooding manner, where M is an integer greater than or equal to 2, for example, each of the M secondary optical links includes at least a1 st forwarding node and an N-th forwarding node in the N forwarding nodes, and each of the M secondary optical links does not include the faulty forwarding node, so that the all-optical network controller may use the M secondary optical links to replace the primary optical link to perform optical path transmission, so as to implement fault self-healing, and further improve transmission reliability through transmission of multiple secondary optical links.

Drawings

Fig. 1 is a schematic flow chart of a fault self-healing method in a high-reliability all-optical network according to an embodiment of the present application;

Fig. 2 is a schematic diagram of an application scenario of a fault self-healing method in a high-reliability all-optical network according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

In the embodiment of the application, the indication can comprise direct indication and indirect indication, and can also comprise explicit indication and implicit indication. The information indicated by a certain information (such as the first indication information, the second indication information, or the third indication information) is referred to as information to be indicated, and in a specific implementation process, there are various ways of indicating the information to be indicated, for example, but not limited to, the information to be indicated may be directly indicated, such as the information to be indicated itself or an index of the information to be indicated. The information to be indicated can also be indicated indirectly by indicating other information, wherein the other information and the information to be indicated have an association relation. It is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance. For example, the indication of the specific information may also be achieved by means of a pre-agreed (e.g., protocol-specified) arrangement sequence of the respective information, thereby reducing the indication overhead to some extent. And meanwhile, the universal part of each information can be identified and indicated uniformly, so that the indication cost caused by independently indicating the same information is reduced.

The specific indication means may be any of various existing indication means, such as, but not limited to, the above indication means, various combinations thereof, and the like. Specific details of various indications may be referred to the prior art and are not described herein. As can be seen from the above, for example, when multiple pieces of information of the same type need to be indicated, different manners of indication of different pieces of information may occur. In a specific implementation process, a required indication mode can be selected according to specific needs, and the selected indication mode is not limited in the embodiment of the present application, so that the indication mode according to the embodiment of the present application is understood to cover various methods that can enable a party to be indicated to learn information to be indicated.

The "pre-defining" or "pre-configuring" may be implemented by pre-storing corresponding codes, tables, or other manners that may be used to indicate relevant information in the device, and the embodiments of the present application are not limited to the specific implementation manner. Where "save" may refer to saving in one or more memories. The one or more memories may be provided separately or may be integrated in an encoder or decoder, processor, or communication device. The one or more memories may also be provided separately as part of a decoder, processor, or communication device. The type of memory may be any form of storage medium, and embodiments of the application are not limited in this regard.

The "protocol" referred to in the embodiments of the present application may refer to a protocol family in the communication field, a standard protocol similar to a frame structure of the protocol family, or a related protocol applied to a future communication system, which is not specifically limited in the embodiments of the present application.

In the embodiment of the present application, the descriptions of "when … …", "in … …", "if" and "if" all refer to that the device will perform corresponding processing under some objective condition, and are not limited in time, and do not require that the device must have a judging action when implementing, and do not mean that there are other limitations.

In the description of the embodiments of the present application, unless otherwise indicated, "/" means that the objects associated in tandem are in a "or" relationship, e.g., A/B may represent A or B; the "and/or" in the embodiment of the present application is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a alone, a and B together, and B alone, wherein A, B may be singular or plural. Also, in the description of the embodiments of the present application, unless otherwise indicated, "plurality" means two or more than two. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural. In addition, in order to facilitate the clear description of the technical solution of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. are used to distinguish the same item or similar items having substantially the same function and effect. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ. Meanwhile, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion that may be readily understood.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided by the embodiments of the present application is applicable to similar technical problems.

To facilitate understanding of the embodiments of the present application, a method for self-healing a fault in a highly reliable all-optical network is described with reference to fig. 1. The method is illustratively performed by an all-optical network controller, which is coupled to each forwarding node in the topology network of the all-optical network, and may control the topology network of the all-optical network, e.g., perform the method of the present application.

The all-optical network controller may be a terminal, such as a terminal having a function of controlling a topology network of an all-optical network, or may be a chip or a chip system provided in the terminal. The terminal may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit (subscriber unit), a subscriber station, a Mobile Station (MS), a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal in the embodiments of the present application may be a mobile phone (mobile phone), a cellular phone (cellular phone), a smart phone (smart phone), a tablet computer (Pad), a wireless data card, a personal digital assistant (personal digital assistant) DIGITAL ASSISTANT, a wireless modem (modem), a handheld device (handset), a laptop computer (labop computer), a machine type communication (MACHINE TYPE communication, MTC) terminal, a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an augmented reality (augmented reality, AR) terminal, a smart home device (e.g., a refrigerator, a television, an air conditioner, an electric meter, etc.), a smart robot, a mechanical arm, a workshop device, a wireless terminal in an industrial control (industrial control), a wireless terminal in an unmanned aerial vehicle (SELF DRIVING), a wireless terminal in a remote medical (remote medium), a wireless terminal in a power grid (SMART GRID), a wireless terminal in a transportation safety (transportation safety), a wireless terminal in a smart city (SMART CITY), a wireless terminal in a smart home, a home terminal, a smart mobile terminal, a mobile station (RSU), a mobile terminal, a mobile station, etc., a mobile station, etc. The terminal of the present application may also be an in-vehicle module, an in-vehicle part, an in-vehicle chip, or an in-vehicle unit built in a vehicle as one or more parts or units. The terminal device may also be other devices with terminal functions, for example, the terminal device may also be a device functioning as a terminal function in D2D communication.

Fig. 1 is a schematic flow chart of a fault self-healing method in a high-reliability all-optical network according to an embodiment of the present application. The fault self-healing method in the high-reliability all-optical network comprises the following steps:

s101, the all-optical network controller determines that a faulty forwarding node exists on the main optical link.

The primary optical link may include N forwarding nodes, where N is an integer greater than or equal to 3, and among the N forwarding nodes, a failed forwarding node is an xth forwarding node from a 2nd forwarding node to an nth-1 forwarding node, and x is an integer from 2 to N-1. The all-optical network controller can determine whether the xth forwarding node is faulty through 2 nodes adjacent to the xth forwarding node, such as the x-1 forwarding node and the reporting condition of the xth+1th forwarding node, and it can be understood that when the xth node is a forwarding node, the 2 nodes adjacent to the xth forwarding node are the xth-1 forwarding node and the xth+1th forwarding node, such as the xth-1 forwarding node cannot be transferred to the xth forwarding node when reporting the optical path, and/or the xth+1th forwarding node cannot be transferred to the xth forwarding node when reporting the optical path, so that the all-optical network controller determines that the xth forwarding node is faulty.

S102, the all-optical network controller takes the failed forwarding node as a center, and determines M auxiliary optical links in a diffusion mode.

M is an integer greater than or equal to 2, each of the M auxiliary optical links at least comprises a 1 st forwarding node and an N th forwarding node in N forwarding nodes, namely at least comprises an original partial link, link multiplexing under the fault condition is realized, each of the M auxiliary optical links does not comprise a faulty forwarding node, and the number of forwarding nodes contained in any two auxiliary optical links in the M auxiliary optical links is different.

Mode 1:

Based on the rule that the number of forwarding nodes increases in sequence, the all-optical network controller can firstly determine the 1 st auxiliary optical link connected with the main optical link by taking the failed forwarding node as the center, then determine the 2 nd auxiliary optical link connected with the 1 st auxiliary optical link, and then continue to use the mode until the M-1 st auxiliary optical link connected with the M-1 st auxiliary optical link is determined, i is an integer from 1 to M, and under the condition that i traverses 1 to M, the number of forwarding nodes in the ith auxiliary optical link in the M auxiliary optical links increases in sequence.

It can be understood that the auxiliary optical links include a1 st auxiliary optical link, … … th auxiliary optical link, an i-th auxiliary optical link, … … th auxiliary optical link, an M-1 st auxiliary optical link and an M-th auxiliary optical link; i.e. the i-th auxiliary optical link is an intermediate link between the 1 st auxiliary optical link and the M-1 st auxiliary optical link.

In the case of i traversal 1 to M, the number of forwarding nodes in the i-th auxiliary optical link among the M auxiliary optical links increases sequentially.

It can be appreciated that the number of forwarding nodes in the i+1th auxiliary optical link is greater than the number of forwarding nodes in the i auxiliary optical link.

Specifically, the all-optical network controller uses the failed forwarding node as the center, determines the 1 st auxiliary optical link connected with the main optical link, determines the 2 nd auxiliary optical link connected with the 1 st auxiliary optical link, and the like, and is specifically described below.

The all-optical network controller may determine 2 forwarding nodes adjacent to the failed forwarding node in the main optical link, where the 2 forwarding nodes are an xth-1 forwarding node and an xth+1th forwarding node of the N forwarding nodes.

It will be appreciated that when it is determined that the x-th forwarding node fails, then the 2 forwarding nodes adjacent to the x-th forwarding node are the x-1-th forwarding node and the x+1-th forwarding node.

The all-optical network controller can determine K ₁ standby forwarding nodes which do not belong to the main optical link but are connected with 2 forwarding nodes from a topological network of the all-optical network, and determine a link formed by 1 st to x-1 st forwarding nodes, x+1 st to M th forwarding nodes and K ₁ standby forwarding nodes in the main optical link as a1 st auxiliary optical link.

It will be appreciated that K ₁ is used to represent the number of standby forwarding nodes connected to 2 forwarding nodes (the 2 forwarding nodes being the x-1 forwarding node and the x+1 forwarding node).

It will be appreciated that K ₁ standby forwarding nodes may be selected according to the load, e.g., selecting the standby forwarding node with the low-2 before-load as K ₁ standby forwarding nodes. When 10 standby forwarding nodes exist, 2 standby forwarding nodes with the load rank at the last 2 bits are selected as K ₁ standby forwarding nodes according to the load size. K ₁ standby forwarding nodes do not belong to the main optical link, but are connected with the x-1 forwarding node and the x+1st forwarding node, and a link formed by the 1 st to x-1 st forwarding nodes, the x+1st to M th forwarding nodes and the K ₁ standby forwarding nodes is determined as the 1 st auxiliary optical link. For example, the 1 st auxiliary optical link is the 1 st to x-1 st forwarding node, K ₁ standby forwarding nodes, and the x+1 st to M th forwarding nodes.

And then, the all-optical network controller determines K ₂ standby forwarding nodes which do not belong to the main optical link but are connected with 2 nodes in the 2 forwarding nodes and the K ₁ standby forwarding nodes from the topology network of the all-optical network, and determines the previous forwarding node in the 1 st auxiliary optical link to the 2 nodes and the next forwarding node in the 2 nodes to the M forwarding node, and a link formed by the K ₂ standby forwarding nodes as the 2 nd auxiliary optical link.

It will be appreciated that K ₂ is used to represent the number of standby forwarding nodes connected to at least 2 forwarding nodes of the 2 forwarding nodes and K ₁ standby forwarding nodes.

It can be understood that the K ₂ standby forwarding nodes do not belong to the main optical link, but are all connected with any two nodes of the x-1 st forwarding node, the x+1 st forwarding node and the K ₁ standby forwarding nodes, and the two nodes can be selected arbitrarily or according to the load, for example, the two nodes with the lower load 2 are selected. When 10 standby forwarding nodes exist, 2 standby forwarding nodes with the load rank at the last 2 bits are selected as K ₂ standby forwarding nodes according to the load size. The two nodes can be marked as node A and node B which are connected, and the all-optical network controller determines a link formed by 1 st to the node A, the node B to the M forwarding node and K ₂ standby forwarding nodes in the 1 st auxiliary optical link as the 2 nd auxiliary optical link. For example, the 2 nd auxiliary optical link is 1 st to node A-K ₂ standby forwarding nodes-node B to M forwarding nodes.

It will be appreciated that in the manner of determining the 3 rd auxiliary optical link and the 4 th auxiliary optical link by the all-optical network controller in the manner similar to determining the 1 st auxiliary optical link and the 2 nd auxiliary optical link in the manner of 1, the all-optical network controller may use this determination manner until the M-th auxiliary optical link connected to the M-1 st auxiliary optical link is determined. For example, the all-optical network controller determines K _M standby forwarding nodes which do not belong to the main optical link but are connected to 2 nodes of the 2 forwarding nodes and the K _M-1 standby forwarding nodes from the topology network of the all-optical network, and determines a previous forwarding node from the 1 st to the 2 nodes and a next forwarding node from the 2 nodes to the M-th forwarding node in the M-1 st auxiliary optical link, and one link formed by the K _M standby forwarding nodes as the M-th auxiliary optical link.

Wherein, K ₁、K₂、K_M is an integer greater than or equal to 1, and when K ₁ is greater than or equal to 2, K ₁ standby forwarding nodes are sequentially connected, and the number of standby forwarding nodes sequentially increases from K ₁、K₂ to K _M.

The advantage of the determination method of the above-described mode 1 is that: under the condition that i is 1 to M-1, the ith auxiliary optical link in the M auxiliary optical links is a redundant standby link of the (i+1) th auxiliary optical link in the M auxiliary optical links; on the basis, the all-optical network controller can also send indication information to the M auxiliary optical links, wherein the indication information is used for indicating that the optical path of the (i+1) th auxiliary optical link is switched to a redundant standby link of the (i+1) th auxiliary optical link, namely the bearing of the (i) th auxiliary optical link, under the condition that the forwarding node which does not belong to the (i) th auxiliary optical link in the (i+1) th auxiliary optical link fails, so that the transmission reliability is further improved.

It will be readily appreciated that the following is presented by way of example:

As shown in fig. 2, the N forwarding nodes of the main optical link include forwarding node #1, forwarding node #2, forwarding node #3, forwarding node #4, forwarding node #5, and forwarding node #3 fails in the order in which they are sequentially connected. Assuming that m=2, the forwarding nodes #2 and #4 are adjacent to the forwarding node #3, first, the all-optical network controller selects 1 standby forwarding node #1 connected to each of the forwarding node #2 and #4 from the topology network of the all-optical network, and sequentially connects the forwarding node #1, the forwarding node #2, the standby forwarding node #1, the forwarding node #4, and the forwarding node #5 as the 1 st auxiliary optical link. Then, the optical network controller may select two nodes, such as a forwarding node #2 and a standby forwarding node #1, from the forwarding node #2, the standby forwarding node #1, and the forwarding node #4, select 1 standby forwarding node #2 connected to the forwarding node #2 and 1 standby forwarding node #3 connected to the standby forwarding node #1 from the topology network of the all-optical network, and connect the standby forwarding node #2 to the standby forwarding node #3, and sequentially connect the forwarding node #1, the forwarding node #2, the standby forwarding node #3, the forwarding node #4, and the forwarding node #5 as the 2 nd auxiliary optical link.

At this time, the forwarding node #1, the forwarding node #2, the standby forwarding node #1, the forwarding node #4, and the forwarding node #5, which are sequentially connected, serve as redundant standby links of the forwarding node #1, the forwarding node #2, the standby forwarding node #3, the forwarding node #4, and the forwarding node #5, which are sequentially connected.

Mode 2:

Based on the rule that the number of forwarding nodes is sequentially reduced, the all-optical network controller takes the failed forwarding node as a center, firstly determines the 1 st auxiliary optical link connected with the main optical link, then determines the 2 nd auxiliary optical link connected with the 1 st auxiliary optical link, and then continues to use the mode until the M-1 st auxiliary optical link connected with the M-1 st auxiliary optical link is determined, i is an integer from 1 to M, and under the condition that i traverses 1 to M, the number of forwarding nodes in the ith auxiliary optical link in the M auxiliary optical links is sequentially reduced.

It can be appreciated that the number of forwarding nodes in the i+1th auxiliary optical link is less than the number of forwarding nodes in the i auxiliary optical link.

It will be appreciated that, in the same way, K ₁ standby forwarding nodes may also be selected according to the load, for example, selecting a standby forwarding node with the low level 2 before the load as K ₁ standby forwarding nodes. When 10 standby forwarding nodes exist, 2 standby forwarding nodes with the load rank at the last 2 bits are selected as K ₁ standby forwarding nodes according to the load size. K ₁ standby forwarding nodes do not belong to the main optical link, but are connected with the x-1 forwarding node and the x+1st forwarding node, and a link formed by the 1 st to x-1 st forwarding nodes, the x+1st to M th forwarding nodes and the K ₁ standby forwarding nodes is determined as the 1 st auxiliary optical link. For example, the 1 st auxiliary optical link is the 1 st to x-1 st forwarding node, K ₁ standby forwarding nodes, and the x+1 st to M th forwarding nodes.

And then, the all-optical network controller determines K ₂ standby forwarding nodes which do not belong to the main optical link but are connected with 2 forwarding nodes and 2 nodes in K ₁ standby forwarding nodes from the topology network of the all-optical network, and determines the previous forwarding node from the 1 st auxiliary optical link to the 2 nodes and the next forwarding node from the 2 nodes to the M forwarding node, and a link formed by the K ₂ standby forwarding nodes as the 2 nd auxiliary optical link.

It will be appreciated that in mode 2, the manner in which the all-optical network controller determines the 3 rd auxiliary optical link and the 4 th auxiliary optical link is similar to the manner in which the 1 st auxiliary optical link and the 2 nd auxiliary optical link are determined in mode 2, and the all-optical network controller may follow this determination manner until the M-th auxiliary optical link connected to the M-1 st auxiliary optical link is determined. For example, the all-optical network controller determines K _M standby forwarding nodes which do not belong to the main optical link but are connected with 2 nodes of the 2 forwarding nodes and the K _M-1 standby forwarding nodes from the topology network of the all-optical network, and determines a 1 st to a 2 nd forwarding node of the M-1 st auxiliary optical link and a 2 nd to an M th forwarding node of the 2 nd forwarding node, and one link formed by the K _M standby forwarding nodes as an M-th auxiliary optical link; wherein, K ₁、K₂、K_M is an integer greater than or equal to 1, and when K _M is greater than or equal to 2, K _M standby forwarding nodes are sequentially connected, and the number of standby forwarding nodes is sequentially reduced from K ₁、K₂ to K _M.

Optionally, in the case that i is 2 to M, the ith auxiliary optical link in the M auxiliary optical links is a partial redundant spare link of the ith-1 auxiliary optical link in the M auxiliary optical links; on the basis, the all-optical network controller can send indication information to the M auxiliary optical links, wherein the indication information is used for indicating that the optical path of the ith auxiliary optical link is switched to a redundant standby link of the ith auxiliary optical link, namely the bearing of the ith auxiliary optical link, under the condition that the forwarding node which does not belong to the ith auxiliary optical link in the ith auxiliary optical link is in fault.

It will be appreciated that the principle of mode 2 is similar to mode 1, except that the process of mode 2 is the reverse process of mode 1, and the specific principle and examples will not be described in detail.

S103, the all-optical network controller uses M auxiliary optical links to replace a main optical link for optical path transmission.

Based on the above mode 1: the all-optical network controller can share the optical path originally transmitted by the main optical link to transmit to the M auxiliary optical links, for example, the indicating information can be respectively transmitted to the M auxiliary optical links, the indicating information can also indicate the load capacity of the sub optical path borne by each auxiliary optical link, and can specifically carry the characteristics of the sub optical path, for example, the port number transmitted in the main optical link before the sub optical path is switched, and the port number of the auxiliary optical link when the sub optical path is switched to the auxiliary optical link, so that each forwarding node in the auxiliary optical link can switch the optical path according to the information, thereby realizing the transmission of the sub optical path by the auxiliary optical link. And i is an integer from 1 to M, and under the condition that i traverses 1 to M, the load capacity of the sub-optical paths shared and borne by the ith auxiliary optical link in the M auxiliary optical links is sequentially reduced.

Based on the above mode 2: similar to mode 1, the all-optical network controller uses M auxiliary optical links to replace the main optical link for optical path transmission, including: the all-optical network controller shares the optical path originally transmitted by the main optical link to M auxiliary optical links for transmission, and each auxiliary optical link in the M auxiliary optical links transmits one sub-optical path in the optical path; and i is an integer from 1 to M, and under the condition that i traverses 1 to M, the load capacity of the sub-optical paths shared and borne by the ith auxiliary optical link in the M auxiliary optical links is sequentially increased.

In summary, there is a faulty forwarding node on the primary optical link, the all-optical network controller may determine M auxiliary optical links by using the faulty forwarding node as a center in a flooding manner, where M is an integer greater than or equal to 2, for example, each of the M auxiliary optical links includes at least a1 st forwarding node and an N-th forwarding node in the N forwarding nodes, and each of the M auxiliary optical links does not include the faulty forwarding node, so that the all-optical network controller may use the M auxiliary optical links to replace the primary optical link to perform optical path transmission, so as to implement fault self-healing, and further improve transmission reliability through transmission of multiple auxiliary optical links.

The fault self-healing method in the high-reliability all-optical network provided by the embodiment of the application is described in detail above with reference to fig. 1. The following describes a fault self-healing apparatus in a highly reliable all-optical network for executing the fault self-healing method in a highly reliable all-optical network provided by the embodiment of the present application.

The apparatus is configured to: the all-optical network controller determines that a faulty forwarding node exists on the main optical link; the main optical link comprises N forwarding nodes, N is an integer greater than or equal to 3, among the N forwarding nodes, the failed forwarding node is the xth forwarding node from the 2nd forwarding node to the N-1 th forwarding node, and x is an integer from 2 to N-1; the all-optical network controller takes the faulty forwarding node as a center, determines M auxiliary optical links in a diffusion mode, wherein M is an integer greater than or equal to 2, each of the M auxiliary optical links at least comprises a1 st forwarding node and an N th forwarding node in N forwarding nodes, each of the M auxiliary optical links does not comprise the faulty forwarding node, i is an integer from 1 to M, and the number of forwarding nodes in an i-th auxiliary optical link in the M auxiliary optical links is sequentially increased under the condition that i traverses 1 to M; and the all-optical network controller uses M auxiliary optical links to replace the main optical link for optical path transmission.

Optionally, in the case that i is 1 to M-1, an i-th auxiliary optical link in the M auxiliary optical links is a redundant standby link of an i+1th auxiliary optical link in the M auxiliary optical links; on the basis, the device is configured to: the all-optical network controller sends indication information to the M auxiliary optical links, wherein the indication information is used for indicating that the optical path of the (i+1) th auxiliary optical link is switched to a redundant standby link of the (i+1) th auxiliary optical link, namely the bearing of the (i) th auxiliary optical link, under the condition that the forwarding node which does not belong to the (i) th auxiliary optical link in the (i+1) th auxiliary optical link fails.

until it reaches; the all-optical network controller determines K _M standby forwarding nodes which do not belong to a main optical link but are connected with 2 nodes in M-1 forwarding nodes and K _M-1 standby forwarding nodes from a topological network of the all-optical network, and determines a previous forwarding node in 1 st to 2 nodes in M-1 auxiliary optical links and a next forwarding node in 2 nodes to an Mth forwarding node, and a link formed by the K _M standby forwarding nodes as an Mth auxiliary optical link; wherein, K ₁、K₂、K_M is an integer greater than or equal to 1, and when K _M is greater than or equal to 2, K _M standby forwarding nodes are sequentially connected, and the number of standby forwarding nodes is sequentially reduced from K ₁、K₂ to K _M.

Optionally, in the case that i is 2 to M, the ith auxiliary optical link in the M auxiliary optical links is a partial redundant spare link of the ith-1 auxiliary optical link in the M auxiliary optical links; on the basis, the device is configured to: the all-optical network controller sends indication information to the M auxiliary optical links, wherein the indication information is used for indicating that the optical path of the ith auxiliary optical link is switched to a redundant standby link of the ith auxiliary optical link, namely the bearing of the ith auxiliary optical link, under the condition that the forwarding node which does not belong to the ith auxiliary optical link in the ith auxiliary optical link is in fault.

Fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device may be a terminal, or may be a chip (system) or other part or component that may be provided in the terminal, for example. As shown in fig. 3, the communication device 400 may include a processor 401. Optionally, the communication device 400 may also include a memory 402 and/or a transceiver 403. Wherein the processor 401 is coupled to the memory 402 and the transceiver 403, e.g. may be connected by a communication bus.

The following describes the respective constituent elements of the communication apparatus 400 in detail with reference to fig. 3:

The processor 401 is a control center of the communication device 400, and may be one processor or a collective term of a plurality of processing elements. For example, processor 401 is one or more central processing units (central processing unit, CPU) and may be an Application SPECIFIC INTEGRATED Circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present application, such as: one or more microprocessors (DIGITAL SIGNAL processors, DSPs), or one or more field programmable gate arrays (field programmable GATE ARRAY, FPGAs).

Alternatively, the processor 401 may perform various functions of the communication apparatus 400, such as performing the above-described fault self-healing method in the high-reliability all-optical network shown in fig. 1, by running or executing a software program stored in the memory 402 and calling data stored in the memory 402.

In a particular implementation, processor 401 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 3, as an embodiment.

In a specific implementation, as an embodiment, the communication apparatus 400 may also include a plurality of processors. Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

The memory 402 is configured to store a software program for executing the solution of the present application, and the processor 401 controls the execution of the software program, and the specific implementation may refer to the above method embodiment, which is not described herein again.

Alternatively, memory 402 may be, but is not limited to, read-only memory (ROM) or other type of static storage device that may store static information and instructions, random access memory (random access memory, RAM) or other type of dynamic storage device that may store information and instructions, electrically erasable programmable read-only memory (ELECTRICALLY ERASABLE PROGRAMMABLE READ-only memory, EEPROM), compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 402 may be integrated with the processor 401 or may exist separately and be coupled to the processor 401 through an interface circuit (not shown in fig. 3) of the communication device 400, which is not specifically limited by the embodiment of the present application.

A transceiver 403 for communication with other communication devices. For example, the communication apparatus 400 is a terminal, and the transceiver 403 may be used to communicate with a network device or with another terminal device. As another example, the communication apparatus 400 is a network device, and the transceiver 403 may be used to communicate with a terminal or another network device.

Alternatively, the transceiver 403 may include a receiver and a transmitter (not separately shown in fig. 3). The receiver is used for realizing the receiving function, and the transmitter is used for realizing the transmitting function.

Alternatively, transceiver 403 may be integrated with processor 401 or may exist separately and be coupled to processor 401 by an interface circuit (not shown in fig. 3) of communication device 400, as embodiments of the application are not specifically limited in this regard.

It will be appreciated that the configuration of the communication device 400 shown in fig. 3 is not limiting of the communication device, and that an actual communication device may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.

In addition, the technical effects of the communication device 400 may refer to the technical effects of the method described in the above method embodiments, which are not described herein.

It should be appreciated that the processor in embodiments of the application may be a central processing unit (central processing unit, CPU), which may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application Specific Integrated Circuits (ASICs), off-the-shelf programmable gate arrays (field programmable GATE ARRAY, FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an erasable programmable ROM (erasable PROM), an electrically erasable programmable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as external cache memory. By way of example, and not limitation, many forms of random access memory (random access memory, RAM) are available, such as static random access memory (STATIC RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double DATA RATE SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCHLINK DRAM, SLDRAM), and direct memory bus random access memory (direct rambus RAM, DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware (e.g., circuitry), firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. In addition, the character "/" herein generally indicates that the associated object is an "or" relationship, but may also indicate an "and/or" relationship, and may be understood by referring to the context.

In the present application, "at least one" means one or more, and "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for self-healing a fault in a highly reliable all-optical network, applied to an all-optical network controller, the method comprising:

The all-optical network controller determines that a faulty forwarding node exists on the main optical link; the main optical link comprises N forwarding nodes, N is an integer greater than or equal to 3, among the N forwarding nodes, the failed forwarding node is the x-th forwarding node from the 2 nd forwarding node to the N-1 th forwarding node, and x is an integer from 2 to N-1;

The all-optical network controller takes the faulty forwarding node as a center, determines M auxiliary optical links in a diffusion mode, M is an integer greater than or equal to 2, each of the M auxiliary optical links at least comprises a1 st forwarding node and an N th forwarding node in the N forwarding nodes, each of the M auxiliary optical links does not comprise the faulty forwarding node, and the numbers of forwarding nodes included in any two auxiliary optical links in the M auxiliary optical links are different;

The all-optical network controller uses the M auxiliary optical links to replace the main optical link for optical path transmission;

The all-optical network controller takes the failed forwarding node as a center, determines M auxiliary optical links in a diffusion mode, and comprises the following steps:

Based on the rule that the number of forwarding nodes is sequentially increased, the all-optical network controller firstly determines a1 st auxiliary optical link connected with the main optical link by taking the failed forwarding node as a center, then determines a 2 nd auxiliary optical link connected with the 1 st auxiliary optical link until determining an M-1 th auxiliary optical link connected with the M-1 th auxiliary optical link, wherein i is an integer from 1 to M, and the number of forwarding nodes in the ith auxiliary optical link in the M auxiliary optical links is sequentially increased under the condition that i traverses 1 to M;

Or alternatively;

based on the rule that the number of forwarding nodes is sequentially reduced, the all-optical network controller firstly determines the 1 st auxiliary optical link connected with the main optical link by taking the failed forwarding node as a center, then determines the 2 nd auxiliary optical link connected with the 1 st auxiliary optical link until the M-1 st auxiliary optical link connected with the M-1 st auxiliary optical link is determined, i is an integer from 1 to M, and under the condition that i traverses 1 to M, the number of forwarding nodes in the ith auxiliary optical link in the M auxiliary optical links is sequentially reduced.

2. The method of claim 1, wherein the all-optical network controller, centering on the failed forwarding node, first determines a1 st auxiliary optical link connected to the main optical link, and then determines a2 nd auxiliary optical link connected to the 1 st auxiliary optical link until determining an mth auxiliary optical link connected to an M-1 st auxiliary optical link, comprising:

The all-optical network controller determines 2 forwarding nodes adjacent to the failed forwarding node in the main optical link, wherein the 2 forwarding nodes are the (x-1) th forwarding node and the (x+1) th forwarding node in the N forwarding nodes;

the all-optical network controller determines K ₁ standby forwarding nodes which do not belong to the main optical link but are connected with the 2 forwarding nodes from a topological network of the all-optical network, and determines a link formed by 1 st to x-1 st forwarding nodes and x+1 st to M th forwarding nodes in the main optical link and the K ₁ standby forwarding nodes as the 1 st auxiliary optical link; the K ₁ is used for representing the number of standby forwarding nodes connected with the 2 forwarding nodes;

The all-optical network controller determines K ₂ standby forwarding nodes which do not belong to the main optical link but are connected with 2 nodes in the 2 forwarding nodes and the K ₁ standby forwarding nodes from a topological network of the all-optical network, and determines a previous forwarding node in the 1 st auxiliary optical link to the 2 nodes and a next forwarding node in the 2 nodes to an Mth forwarding node, and a link formed by the K ₂ standby forwarding nodes as the 2 nd auxiliary optical link; the K ₂ is used for representing the number of standby forwarding nodes connected with at least 2 forwarding nodes in the 2 forwarding nodes and the K ₁ standby forwarding nodes;

Until it reaches;

The all-optical network controller determines K _M standby forwarding nodes which do not belong to the main optical link but are connected with 2 nodes in the 2 forwarding nodes and the K _M-1 standby forwarding nodes from a topological network of the all-optical network, and determines a previous forwarding node in the 1 st to the 2 nodes in the M-1 st auxiliary optical link and a next forwarding node in the 2 nodes to the M forwarding node, wherein one link formed by the link and the K _M standby forwarding nodes is determined as the M-th auxiliary optical link;

Wherein, K ₁、K₂、K_M is an integer greater than or equal to 1, and when K ₁ is greater than or equal to 2, the K ₁ standby forwarding nodes are sequentially connected, and the number of the standby forwarding nodes sequentially increases from K ₁、K₂ to K _M.

3. The method according to claim 2, wherein in the case of i traversal 1 to M-1, the i-th secondary optical link of the M secondary optical links is a redundant backup link of the i+1-th secondary optical link of the M secondary optical links; on the basis, the method further comprises the following steps:

The all-optical network controller sends indication information to the M auxiliary optical links, where the indication information is used to indicate that, in the case that a forwarding node in the i+1th auxiliary optical link does not belong to the i auxiliary optical link fails, an optical path of the i+1th auxiliary optical link is switched to a redundant standby link of the i+1th auxiliary optical link, that is, a bearer of the i auxiliary optical link.

4. The method of claim 3, wherein the all-optical network controller uses the M secondary optical links to replace the primary optical link for optical path transmission, comprising:

The all-optical network controller shares the optical path which is transmitted by the main optical link to the M auxiliary optical links for transmission, and each auxiliary optical link in the M auxiliary optical links transmits one sub-optical path in the optical path; under the condition of i traversing 1 to M, the load capacity of the sub-optical paths shared and carried by the ith auxiliary optical link in the M auxiliary optical links is sequentially reduced.

5. The method of claim 1, wherein the all-optical network controller, centering on the failed forwarding node, first determines a1 st auxiliary optical link connected to the main optical link, and then determines a2 nd auxiliary optical link connected to the 1 st auxiliary optical link until determining an mth auxiliary optical link connected to an M-1 st auxiliary optical link, comprising:

The all-optical network controller determines K ₁ standby forwarding nodes which do not belong to the main optical link but are connected with the 2 forwarding nodes from a topological network of the all-optical network, and determines a link formed by 1 st to x-1 st forwarding nodes, x+1 st to M th forwarding nodes and the K ₁ standby forwarding nodes in the main optical link as the 1 st auxiliary optical link; the K ₁ is used for representing the number of standby forwarding nodes connected with the 2 forwarding nodes;

The all-optical network controller determines K ₂ standby forwarding nodes which do not belong to the main optical link but are connected with 2 nodes in the 2 forwarding nodes and the K ₁ standby forwarding nodes from a topological network of the all-optical network, and determines a previous forwarding node in the 1 st auxiliary optical link to the 2 nodes and a next forwarding node in the 2 nodes to an M forwarding node in the 1 st auxiliary optical link, and one link formed by the K ₂ standby forwarding nodes as the 2 nd auxiliary optical link; the K ₂ is used for representing the number of standby forwarding nodes connected with at least 2 forwarding nodes in the 2 forwarding nodes and the K ₁ standby forwarding nodes;

Until it reaches;

Wherein, K ₁、K₂、K_M is an integer greater than or equal to 1, and when K _M is greater than or equal to 2, the K _M standby forwarding nodes are sequentially connected, and the number of the standby forwarding nodes sequentially decreases from K ₁、K₂ to K _M.

6. The method of claim 5, wherein in the case of i traversal 2 through M, an i-th secondary optical link of the M secondary optical links is a partially redundant backup link of an i-1-th secondary optical link of the M secondary optical links; on the basis, the method further comprises the following steps:

The all-optical network controller sends indication information to the M auxiliary optical links, wherein the indication information is used for indicating that under the condition that a forwarding node which does not belong to the ith auxiliary optical link in the ith-1 auxiliary optical link fails, the optical path of the ith-1 auxiliary optical link is switched to a redundant standby link of the ith-1 auxiliary optical link, namely the bearing of the ith auxiliary optical link.

7. The method of claim 6, wherein the all-optical network controller uses the M secondary optical links to replace the primary optical link for optical path transmission, comprising:

The all-optical network controller shares the optical path which is transmitted by the main optical link to the M auxiliary optical links for transmission, and each auxiliary optical link in the M auxiliary optical links transmits one sub-optical path in the optical path; under the condition of i traversing 1 to M, the load capacity of the sub-optical paths shared and loaded by the ith auxiliary optical link in the M auxiliary optical links is sequentially increased.