CN115297386A - All-optical switching network control system and method - Google Patents

Abstract

The invention relates to the technical field of communication, and particularly discloses a control system and a control method for an all-optical switching network, wherein the method comprises the following steps: s1, generating all communication requests in a virtual machine according to application types in the virtual machine, and dividing the communication requests into a plurality of communication matrixes, wherein each layer of all-optical cross switch corresponds to one communication matrix; s2, allocating ports and wavelengths for a resource block; s3, repeating the step S2 to distribute ports and wavelengths for other resource blocks until all communication relation configuration is finished; s4, issuing a cross configuration command to the layer of all-optical switch to enable the all-optical switch to configure the ports based on the cross configuration command; s5, repeating the steps S2-S4 until the configuration of all-optical cross switches of all layers is completed; and S6, after the configuration of the all-optical cross switch is finished, the all-optical cross switch switches the optical signals with the specific wavelength generated by the ports to the specified ports according to the configuration, so that data exchange is realized. By adopting the technical scheme of the invention, the time delay of the large service flow can be reduced, and the network performance can be improved.

Description

All-optical switching network control system and method

Technical Field

The invention relates to the technical field of communication, in particular to a control system and a control method for an all-optical switching network.

Background

Most data centers or super-computation centers at present are based on a server-centric (server-centric) architecture, in which the ratio of various resource blocks (such as CPU, RAM, accelerator, etc.) is fixed, but in a data center, the requirement of many applications or Virtual Machines (VM) on the resource blocks does not match with the ratio, which results in a waste of a large amount of resources and energy consumption. In addition, modern data centers are continuously developing towards high parallelization, some new data-intensive applications need to use a large amount of computing and memory/external memory resources in the servers, and the problem of resource redundancy allocation aggravates the overall performance. Moreover, upgrading technology in a data center requires an entire server level upgrade, and individual upgrade replacement for a resource cannot be performed, so that the cost for upgrading a large data center is very high.

The advent of Resource Pooling (Resource Pooling) architecture can break this bottleneck. Resource pooling physically isolates resource blocks (computation, storage, accelerators, etc.), each resource block being deployed on a separate resource blade (blade), and connects these resource blades over a highly interconnected network. However, for a resource-pooling system, communications that would otherwise be done inside one server (blade) may require the entire data center's network to be transmitted. This puts higher demands on the interconnection network between the modules, especially as the communication indexes between the CPU-RAMs will directly affect the performance of the application data center applications. In a traditional multi-stage electrical interconnection network, queuing and other time delays are introduced into each stage of switch, and especially when the data volume is large, the network performance is seriously deteriorated.

Therefore, an all-optical switching network control system and method capable of reducing the delay of a large service flow and improving the network performance are needed.

Disclosure of Invention

One of the objectives of the present invention is to provide a method for controlling an all-optical switching network, which can reduce the delay of a large service flow and improve the network performance.

In order to solve the technical problem, the present application provides the following technical solutions:

a method for controlling an all-optical switching network, comprising:

s0, receiving a virtual machine request and distributing resource blocks;

the method also comprises the following steps:

s1, generating all communication requests in a virtual machine according to application types in the virtual machine, and dividing the communication requests into a plurality of communication matrixes, wherein each layer of all-optical cross switch corresponds to one communication matrix;

s2, allocating ports and wavelengths for a resource block;

s3, repeating the step S2 to distribute the ports and the wavelengths for other resource blocks until all communication relation configuration is finished, and forming a cross configuration command comprising cross configuration of the ports and the wavelengths;

s4, issuing a cross configuration command to the all-optical switch of the layer to enable the all-optical switch to configure the ports based on the cross configuration command;

s5, repeating the steps S2-S4 until the configuration of all-optical cross switches of all layers is completed;

and S6, after the configuration of the all-optical cross switch is finished, the all-optical cross switch switches the optical signals with specific wavelengths generated by the ports to the specified ports according to the configuration, so that data exchange is realized.

Further, step S7 is included, when the data volume of the communication is higher than the threshold, controlling a port of the all-optical switch to perform instant wavelength switching, establishing an optical path for the traffic flow of which the data volume is higher than the threshold, and controlling the all-optical switch to tear down the optical path after the communication is completed.

Further, when the communication matrix is divided in step S1, the communication requests with the communication occurrence interval less than 1ms are divided into different communication matrices.

Further, in step S1, the communication matrix is represented as:

C _yx ＝C _xy ,x<y,x,y＝1…n

wherein, communication between resource blocks is set as 1, and non-communication is set as 0.

Further, in step S2, the wavelength is allocated based on the principle that the same port and different ports use different wavelengths, and the port interconnection relationship Cxy and Cyx use the same wavelength, where x and y are port numbers.

Further, in the step S2, the correspondence between the wavelength and the port is allocated by a coloring algorithm;

for an allocated resource block ba, its set of communication relationships is COMM { commay, cay =1, a-Ap-y }, where ay is a port number, its unassigned wavelength W { λ b, λ b +1, \8230;, λ W };

allocating the wavelengths of lambda b and lambda b +1 \8230forthe commayy sequence according to the sequence number of y;

after the wavelength assignment is finished, the ay ports are set to be interconnected through the wavelength λ.

The invention also aims to provide a control system of the all-optical switching network, which uses the method and comprises the all-optical switching network and a network controller;

the network controller is used for sending a cross configuration command to the all-optical switching network; the cross configuration command comprises port and wavelength cross configuration;

the all-optical switching network comprises at least two layers of all-optical cross switches, the all-optical cross switches are used for configuring ports and wavelengths according to cross configuration commands, and the configured ports are communicated with each other through specific wavelength optical signals.

Further, the network controller is further configured to control, through a cross configuration command, a port of the all-optical switch to perform instant wavelength switching when the data volume of the communication is higher than a threshold, and establish an optical path for a traffic flow of which the data volume is higher than the threshold;

and the network controller is also used for controlling the all-optical switch to remove the optical path through a cross configuration command after the communication is finished.

Compared with the prior art, the invention has the advantages that:

when an application or a virtual machine request arrives, the network controller reconfigures the all-optical cross switch so as to reconstruct the connection relation between resource blocks, and in the running process of the virtual machine, the network controller makes the decision of configuration and reconfiguration of the all-optical cross switch. When large service flow occurs, the all-optical cross switch changes the connection relation between the ports, namely, the all-optical switching network is dynamically reconstructed, the normal passing of the large service flow is ensured, and compared with the existing queuing waiting, the delay can be effectively reduced.

Drawings

Fig. 1 is a flowchart of a control method of an all-optical switching network according to an embodiment;

fig. 2 is an architecture diagram of an all-optical switching network according to a second embodiment;

fig. 3 is a schematic network configuration diagram of an all-optical switching network according to a second embodiment;

fig. 4 is a schematic diagram of a resource block internal network interface of the all-optical switching network according to the second embodiment.

Detailed Description

The following is further detailed by way of specific embodiments:

example one

As shown in fig. 1, a control method for an all-optical switching network in this embodiment includes the following steps:

s0, receiving a new VM request Rq { C, M, S, \8230; }, and allocating resource blocks by the existing resource scheduler: AL { b1, b2, b3, \ 8230;, bn };

s1, a network controller generates all communication requests in a virtual machine according to application types in the virtual machine, and the communication requests are divided into a plurality of communication matrixes, and each layer of all-optical cross switch corresponds to one communication matrix; and dividing the communication requests with high parallelism into different communication matrixes. In this embodiment, the high-parallelism means that the communication occurrence interval is less than 1ms.

The communication matrix is represented as:

C _yx ＝C _xy ,x<y,x,y＝1…n

wherein, communication between resource blocks is set as 1, and non-communication is set as 0.

S2, allocating ports and wavelengths for a resource block; the wavelength is allocated based on the principle that the same port and different ports use different wavelengths, and the interconnection relationship Cxy and Cyx of the ports use the same wavelength, wherein x and y are port numbers.

Specifically, port and wavelength cross configuration is set from small to large according to the sequence number of the resource block; in the cross configuration of the ports and the wavelengths, the correspondence between the wavelengths and the ports may adopt, but is not limited to, a coloring algorithm, and the correspondence between the wavelengths and the ports is allocated by the coloring algorithm in this embodiment;

for an allocated resource block ba, its set of communication relationships is COMM { commay, cay =1, a-Ap-y }, where ay is a port number, its unassigned wavelength W { λ b, λ b +1, \8230;, λ W };

allocating the wavelengths of lambda b and lambda b +1 \8230forthe commayy sequence according to the sequence number of y;

after the wavelength assignment is finished, the ay ports are set to be interconnected through the wavelength λ.

S3, repeating the step S2 to distribute the ports and the wavelengths for other resource blocks until all communication relation configuration is finished, and forming a cross configuration command comprising cross configuration of the ports and the wavelengths;

s4, the network controller issues a cross configuration command to the layer of all-optical switch, so that the all-optical switch configures the ports based on the cross configuration command;

s5, repeating the steps S2-S4 until the configuration of all-optical cross switches of all layers is completed;

and S6, after the configuration of the all-optical cross switch is finished, the all-optical cross switch switches the optical signals with the specific wavelength generated by the ports to the specified ports according to the configuration, so that data exchange is realized.

And S7, when the data volume of the communication is higher than the threshold value, controlling one port of the all-optical switch to carry out instant wavelength switching, establishing an optical path for the service flow of which the data volume is higher than the threshold value, and controlling the all-optical switch to remove the optical path after the communication is finished.

In other words, the communication inside the VM needs to dynamically reconfigure the all-optical switching network, i.e. switch the local transceiving wavelength. The reconfiguration process may be switched based on traffic flow size.

Based on a control method of an all-optical switching network, the present embodiment further provides a control system of the all-optical switching network, including an all-optical switching network and a network controller; for better illustration of the present solution, the present embodiment also describes associated resource blocks, an all-optical switching network, and an electrical control switching network. The resource blocks, the all-optical switching network, the electric control switching network and the network controller form the all-optical switching network.

The resource block comprises a computing and storage chip and a network interface;

all-optical switching networks are used to implement data transmission between different resource blocks. In this embodiment, the all-optical switching network includes an all-optical crossbar switch based on wavelength and space switching;

the electric control switching network is used for exchanging control signals between the resource blocks and the network controller;

the network controller is used for realizing network reconfiguration control and network configuration.

Specifically, the method comprises the following steps:

the resource block calculation and storage chip types specifically include: a Computing chip, a Memory chip and a hard disk (Storage) chip. Computing chips include, but are not limited to, CPU (central processing unit) chips, GPU (graphics processing unit) chips. The Memory chip includes, but is not limited to, a DDR4 chip, an HBM (High Bandwidth Memory) chip, and an HMC (Hybrid Memory Cube) chip. The Hard Disk chip includes, but is not limited to, a Solid-State drive (SSD) chip, and a Hard Disk Drive (HDD) chip.

The computing and storage chips of the resource blocks are interconnected with the network interface through a high-speed path, the high-speed path includes but is not limited to a PCIe (Peripheral Component interconnect express) channel, an electrical signal of communication data is transmitted to the network interface through the high-speed path, and is converted into an optical signal through the network interface and then is transmitted to the all-optical switching network through an optical fiber.

The network interface has basic network card functions, such as encapsulation of higher-level network protocols, and supported higher-level protocols, such as RoCE (RDMA over converted Ethernet) or IB (Infiniband) protocols. The network interface also needs to manage data transmission and reception and implement fast reconfiguration of the network through wavelength configuration. The implementation manner of the network interface includes, but is not limited to, implementing its function based on an FPGA (Field Programmable Gate Array). The network interface specifically includes a control unit, a data path module, a clock synchronization module, an optical data port, and a control port.

At least 1 optical data port for producing wavelength tunable optical signals, including but not limited to a 400Gbps QSFP + optical path port.

The all-optical switching network comprises d layers (d is more than or equal to 2) of all-optical cross switches, and the all-optical cross switches are realized based on WSS (Wavelength Selective Switch) technology but not limited to the WSS technology. The interior of the all-optical crossbar switch may be cascaded from a cross-bar switch of small ports (e.g., including but not limited to a cross-bar switch of less than 10 ports). Each optical data port is connected to a port of an all-optical crossbar switch through an optical path (a tunable optical module and an optical fiber), and specifically, each layer of all-optical crossbar switch is interconnected with one optical data port of a resource block.

The all-optical cross switch is communicated with the configured ports through optical signals with specific wavelengths, and the accessed optical data ports generate optical signals with different wavelengths so as to communicate with different destination nodes;

the control port is connected to an electric control switching network through an optical path (a fixed wavelength optical module and an optical fiber), and a control signal is exchanged between the control port and a network controller through the electric control switching network; the control signal sent by the control port to the network controller comprises the communication state and the communication request of the optical data port inside the resource block; the control signal sent to the resource block control port by the network controller comprises a wavelength routing table and a reconfiguration command. Specifically, the network controller is connected to the electrical control switching network through an optical port of the network controller; the control signal is converted into an electric signal for processing and exchanging after entering the electric control exchange network.

The network controller is also interconnected with the control interfaces of all-optical cross switches through the electrical interface of the network controller, so as to issue cross configuration commands of the all-optical cross switches, wherein the cross configuration commands comprise cross configuration of ports and wavelengths.

The control unit is used for carrying out routing according to the wavelength routing table and configuring the working wavelength of the tunable optical module; the optical network controller is also used for receiving a reconfiguration command of the network controller and uploading the state of the local optical data port; the control unit is also used to manage the local data path.

The clock synchronization module is used for synchronizing the transmission signal clock and the phase with the communication node through the control port.

The data path module is used for dividing the data into different queues according to destination addresses of the communicated data; the optical data port only transmits the queue data of the corresponding destination node at a certain time.

According to the scheme, reconstruction of different dimensions can be achieved, when an application or a virtual machine request arrives, the network controller reconfigures the all-optical cross switch, reconstructs the connection relation among resource blocks, and in the running process of the virtual machine, the resource block side reconstructs a light path by configuring the light receiving and transmitting wavelengths of the optical modules. The electrical control switching network is responsible for transmitting control messages including reconfiguration commands and link status, etc. The network controller is also responsible for making decisions on configuration and reconfiguration of the all-optical crossbar switch.

The scheme provides a multi-dimensional reconfigurable mode based on resource pooling. The configuration of the all-optical crossbar switch is a one-dimensional reconstruction mode in a scheme, and the connection relation between ports is changed; the wavelength reconstruction of the optical tuning module is a middle-second-dimension reconstruction mode of the scheme, and the communication route between the resource blocks is changed. In other words, the communication inside the virtual machine needs to dynamically reconfigure the all-optical switching network, i.e. switch the local transceiving wavelength. The reconfiguration process can be divided into two switching granularities according to the data volume of the virtual machine, namely time slot switching and service flow size switching.

Example two

The present embodiment describes a control method for an all-optical switching network with reference to an example:

as shown in fig. 2, in the example, the network interface has two optical data ports, and the all-optical switching network has a two-layer all-optical crossbar switch. All-optical cross-point of each layerThe related configuration method is the same. Its large service flow corresponds to optical data port O ₁ Small service flow corresponding to optical data port O ₂ . In this embodiment, a large traffic flow refers to a traffic flow with a data volume greater than 1MB, and a small traffic flow refers to a traffic flow with a data volume less than 1 MB.

S0, assuming that the VM requests 1 CPU chip, 2 memory chips and 1 hard disk chip; the existing resource scheduler allocates resource blocks, RBs ₁ 、RB ₂ 、RB ₃ 、RB ₄ The ports of the corresponding all-optical cross switches are respectively P ₁ ，P ₂ ，P ₃ ，P ₄ 。

S1, setting 1 according to communication requirements among resource blocks, setting 0 without the communication requirements, and enabling the matrix pair to be symmetrical about a diagonal.

The matrix of communication requirements between resource blocks is expressed as:

C _yx ＝C _xy ,x<y,x,y＝1…n

the communication matrix inside the VM is shown in table 1.

TABLE 1 communication requirement matrix

RB	1	2	3	4
					1	-	1	1	0
2	1	-	0	1
					3	1	0	-	1
4	0	1	1	-

S2, wavelength allocation is carried out based on the principle that the same port and different ports use different wavelengths, and the port interconnection relation C _xy And C _yx The same wavelength is used, where x, y are port numbers. The wavelength numbers are assigned in order.

In order to satisfy the above communication relationship, 2 or 2 sets of wavelengths are required, and in this embodiment, 2 wavelengths λ are used ₁ And λ ₂ 。

The wavelength allocation can adopt a coloring algorithm, and the specific wavelength allocation steps of the embodiment are as follows:

s201, first, a port P with a small serial number ₁ Assign a wavelength of C ₁₂ ，C ₁₃ Are each lambda ₁ And λ ₂ Then C is ₂₁ Is also lambda ₁ ，C ₃₁ Corresponding to a wavelength λ ₂ ；

S202、P ₂ Communication relationship C of ports ₂₄ Is λ ₂ Then C is ₄₂ Corresponding wavelength is λ ₁ ；

S203、P ₃ Communication relationship C of ports ₃₄ Corresponding to a wavelength λ ₁ Then C is ₄₃ Corresponding to a wavelength λ ₁ .

After the allocation is completed, the port wavelength correspondence is as shown in table 2.

TABLE 2 Port wavelength Cross relationship Table

Port	1	2	3	4
					1		λ 1	λ 2
2	λ 1			λ 2
					3	λ 2			λ 1
4		λ 2	λ 1

S4, the network controller issues the cross configuration command to a control interface of the all-optical cross switch, and the P of the all-optical cross switch is subjected to ₁ ，P ₂ ，P ₃ ，P ₄ The port is configured.

The network controller issues the corresponding wavelength routing table and the initial wavelength to the resource block RB through the electric control switching network ₁ 、RB ₂ 、RB ₃ 、RB ₄ The control unit in the network interface performs wavelength configuration according to the initial wavelength requirement, as shown in fig. 3.

Following with RB ₁ The relevant communication description S6-S7.

RB ₁ And RB ₂ Before communication, if the data volume of the service flow is large, the control unit informs the network controller, the network controller sends a route establishing message to the related node, and after the configuration is completed, the RB ₁ And RB ₂ And exchanging a configuration completion signal, and starting communication after receiving the configuration completion signal.

When the optical port needs to be reconfigured to RB ₃ When is RB ₁ And RB ₃ When traffic with large data volume occurs, the network controller firstly sends the RB ₁ 、RB ₃ Issue inquiry command, control thereofAnd the control unit uploads the state of the optical data port, if the two ports are in an idle state and no data packet is transmitted, the network controller issues a reconfiguration command, and the reconfiguration command contains a destination node number.

If RB ₁ To RB ₂ When the data volume of the service flow is small, the service flow is stored into the RB ₂ In the corresponding queue, the queue will be in RB ₂ Corresponding time slot t ₁ And carrying out data transmission. The optical data port can reconstruct the optical link according to the time slot, and the time slot t is ₁ Transmitting RB ₂ Corresponding queue and in time slot t ₂ Transmitting RB ₃ Corresponding alignment.

In the all-optical switching network of this embodiment, the number of optical data ports is N, the number of corresponding all-optical crossbar switches is N, and the number of resource blocks is K, then the number of all-optical switch switches should be greater than or equal to K.

And an optical data port p on the resource block a is accessed to the port a on the all-optical switch p through the tunable optical module and the optical fiber. And a control port of the network interface is accessed to an available port of the electric control switching network through the fixed wavelength optical module and the optical fiber.

The total number of ports of the electrically controlled switching network should be greater than the number of resource blocks, which is K +1 in this embodiment. One of the ports of the electrically controlled switching network accesses an interface control port of the network controller (i.e., an optical port of the network controller). In the whole network architecture, control messages and load data are transmitted through an electric control switching network and an all-optical crossbar switch respectively and are not crossed, and the efficiency of an all-optical network is guaranteed.

The all-optical crossbar switch can be formed by cascading switches with fewer ports, for example, a switch with 128 ports and 128 ports is formed by cascading switches with 64 ports and 64 ports. Cascading ways include, but are not limited to Clos topologies. The all-optical cross-connect switch supports communication between any port Pa and Pb at any supported wavelength lambdam or wavelength group. After the all-optical crossbar switch is configured, the all-optical crossbar switch can be based on wavelength routing, that is, if the wavelength corresponding to the interconnection relationship Cab between the optical data ports Pa and Pb is λ m, the wavelength λ m cannot be used for interconnection relationships between Pa and Pb except for Pb { Cax, x ≠ b } and interconnection relationships between Pb and Pa { Cbx, x ≠ a }.

All-optical cross-connect switches may be based on, but are not limited to, the C + L band, and the minimum wavelength frequency spacing may include, but is not limited to, 12.5GHz. It is noted that the tunable optical modules used are the same wavelength as supported by the all-optical crossbar switch. The all-optical cross-connect switch can only configure part of the ports of the all-optical cross-connect switch at each configuration, and the cross-connect of other ports is kept unchanged.

For example, one port Pc and Pd of the all-optical crossbar switch are interconnected through a wavelength λ k, and Pc and Pe are interconnected through another wavelength λ q, the access port Pc and the optical data port tune the wavelength to λ k, so that Pc can communicate with Pd, the access port Pc and the optical data port tune the wavelength to λ q, and then Pc can communicate with Pe.

When the system is expanded to a certain scale (for example, including but not limited to hundreds of nodes), a single electrically controlled switch cannot meet the port number requirement, and an electrically controlled switching network can be constructed based on a plurality of cascading manners including but not limited to a 3-layer fat-tree (fat-tree) topology, the electrically controlled switching network adopts an electrical switch including but not limited to an ethernet switch, and the control port adopts a corresponding protocol for encapsulation. The electrical switch has a high forwarding efficiency for smaller control message packets.

The control port of the resource block is used for sending a local link state (a communication state of the optical data port) and a communication request and the like to the network controller through the electric control switching network, the network controller is used for issuing a reconfiguration command to the control unit of the resource block through the electric control switching network, and the reconfiguration command comprises a target resource block of the path switching and an optical data port serial number of the path switching required to be carried out.

And the resource block is used for inquiring a wavelength routing table corresponding to the port of the all-optical cross switch after receiving the reconfiguration command and configuring the wavelength of the corresponding tunable optical module. The resource blocks are used for exchanging path establishing messages with the target resource blocks through the electrically controlled switching network, and the path establishing messages include but are not limited to clock synchronization signals, phase synchronization signals, optical power synchronization signals and other path establishing necessary signals.

As shown in fig. 4, when a resource block needs to communicate, first, data of a computing and storing chip is unloaded into the network interface, a data path module is used to store the data into different queues according to different destination nodes, and a control unit is used to determine whether to send the queue corresponding to the data according to the destination node corresponding to the current port link, and if the destination node corresponding to the current port corresponds to the destination node of the data, the queue can be sent. If the corresponding destination node of the destination port does not accord with the destination node, the destination port continues to be stored in the queue and waits for the command of the control unit, so that the credibility of the communication is ensured. The queue data which can be transmitted is subjected to protocol encapsulation of an MAC layer and a PHY layer, and then modulated into an optical signal with a specified wavelength through a tunable optical module to be transmitted to the all-optical cross switch.

The above are merely examples of the present invention, and the present invention is not limited to the field related to this embodiment, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art can know all the common technical knowledge in the technical field before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the scheme, and some typical known structures or known methods should not become barriers to the implementation of the present invention by those skilled in the art in light of the teaching provided in the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be defined by the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (8)

1. An all-optical switching network control method comprises the following steps:

s0, receiving a virtual machine request and distributing resource blocks;

the method is characterized by also comprising the following contents:

s1, generating all communication requests in a virtual machine according to application types in the virtual machine, and dividing the communication requests into a plurality of communication matrixes, wherein each layer of all-optical crossbar switch corresponds to one communication matrix;

s2, allocating ports and wavelengths for a resource block;

s3, repeating the step S2 to distribute the ports and the wavelengths for other resource blocks until all communication relation configuration is finished, and forming a cross configuration command comprising cross configuration of the ports and the wavelengths;

s4, issuing a cross configuration command to the all-optical switch of the layer to enable the all-optical switch to configure the ports based on the cross configuration command;

s5, repeating the steps S2-S4 until the configuration of all-optical cross switches of all layers is completed;

and S6, after the configuration of the all-optical cross switch is finished, the all-optical cross switch switches the optical signals with the specific wavelength generated by the ports to the specified ports according to the configuration, so that data exchange is realized.

2. The all-optical switching network control method according to claim 1, characterized in that: and step S7, when the data volume of the communication is higher than the threshold value, controlling one port of the all-optical switch to carry out instant wavelength switching, establishing an optical path for the service flow of which the data volume is higher than the threshold value, and controlling the all-optical switch to remove the optical path after the communication is finished.

3. The all-optical switching network control method according to claim 1, characterized in that: when the communication matrix is divided in the step S1, the communication requests with the communication occurrence interval less than 1ms are divided into different communication matrices.

4. The all-optical switching network control method according to claim 3, characterized in that: in step S1, the communication matrix is represented as:

C _yx ＝C _xy ,x<y,x,y＝1.....n

wherein, communication between resource blocks is set as 1, and non-communication is set as 0.

5. The all-optical switching network control method according to claim 4, characterized in that: in the step S2, wavelength allocation is performed based on the principle that the same port and different ports use different wavelengths, and the same wavelength is used for Cxy and Cyx in the port interconnection relationship, where x and y are port numbers.

6. The all-optical switching network control method of claim 5, characterized in that: in the step S2, the corresponding relation between the wavelength and the port is distributed through a coloring algorithm;

for an allocated resource block ba, its set of communication relationships is COMM { commay, cay =1, a-Ap-y }, where ay is a port number, its unassigned wavelength W { λ b, λ b +1, \8230;, λ W };

allocating the wavelength of lambda b and lambda b +1 \8230forthe comary sequence according to the sequence number of y;

after the wavelength assignment is finished, the ay ports are set to be interconnected through the wavelength λ.

7. An all-optical switched network control system using the method of any one of claims 1 to 6, comprising an all-optical switched network and a network controller;

the network controller is used for sending a cross configuration command to the all-optical switching network; the cross configuration command comprises port and wavelength cross configuration;

the all-optical switching network comprises at least two layers of all-optical cross switches, the all-optical cross switches are used for configuring ports and wavelengths according to cross configuration commands, and the configured ports are communicated with each other through specific wavelength optical signals.

8. The all-optical switching network control system of claim 7, wherein: the network controller is further configured to control a port of the all-optical switch to perform instant wavelength switching through a cross configuration command when the data volume of the communication is higher than a threshold value, and establish an optical path for a service flow of which the data volume is higher than the threshold value;

and the network controller is also used for controlling the all-optical switch to remove the optical path through a cross configuration command after the communication is finished.

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