Data center network system, data transmission method, electronic equipment and medium

Abstract

The invention provides a data center network system, a data transmission method, an electronic device and a medium, and relates to the technical field of communication, the data center network system comprises N server groups and N optical transport network (OTN) devices, each server group comprises a plurality of servers, one server group is associated with one OTN device, and the server groups are connected with the OTN devices. The N OTN devices are connected through optical fibers, different server groups carry out data transmission through the OTN devices associated with the corresponding server groups, and a plurality of servers in a first server group carry out data transmission through the OTN device associated with the first server group, the first server group is any one of the N server groups. The data transmission efficiency of the data center network is improved from multiple dimensions of architecture simplification, time delay optimization, bandwidth utilization and the like.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a data center network system, a data transmission method, an electronic device, and a medium. Background Art

[0002] Currently, the networks of data centers generally adopt a multi-layer switch architecture. During the communication process in a data center, to achieve the interconnection of a large number of servers, a large number of switches and interconnection ports need to be configured, and the data transmission between servers needs to pass through multiple levels of switches. This data center network based on a multi-layer switch architecture has many levels. Since the hash algorithm in the multi-path forwarding strategy of switches cannot evenly distribute traffic, it is easy for some links to be overloaded while other link bandwidths are not fully utilized. Moreover, the multi-layer structure of switches increases the complexity and latency of the network, resulting in low data transmission efficiency. Summary of the Invention

[0003] Embodiments of this application provide a data center network system, a data transmission method, an electronic device, and a medium to solve the problem of low data transmission efficiency in the prior art.

[0004] To solve the above technical problem, this application is implemented as follows: In a first aspect, embodiments of this application provide a data center network system, including: N server groups and N optical transport network (OTN) devices. Each server group includes multiple servers. One server group is associated with one OTN device. The N OTN devices are connected by optical fibers. Data transmission between different server groups is performed through the OTN devices associated with the corresponding server groups. Multiple servers in the first server group perform data transmission through the OTN device associated with the first server group. The first server group is any one of the N server groups, and N is an integer greater than 1.

[0005] Optionally, the N OTN devices are connected in a ring connection mode or a full connection mode.

[0006] Optionally, the first OTN device includes multiple ports. The multiple ports are connected to multiple servers in the server group associated with the first OTN device, and one port is connected to one server. The first OTN device is any one of the N OTN devices.

[0007] Optionally, each OTN device includes a data encapsulation module and a data decapsulation module. The data encapsulation module is used to encapsulate Ethernet data into optical signal data, and the decapsulation module is used to decapsulate the optical signal data into the Ethernet data.

[0008] Optionally, during the data transmission between any two of the OTN devices through an optical fiber, the optical fiber includes at least two data streams, and the data streams are data processed by using the wavelength division multiplexing technology.

[0009] In a second aspect, an embodiment of the present application provides a data transmission method, which is applied to the data center network system as described in the first aspect. The method includes: A first OTN device determines a second server that receives the first target data according to the first target data sent by a first server. The first OTN device is any one of the N OTN devices, the first server is any one of the first server groups associated with the first OTN device, the second server is another server in the first server group, or the second server is any one of the server groups other than the first server group among the N server groups. The first target data is Ethernet data; When the second server is a server in the first server group, the first OTN device sends the first target data to the second server; When the second server is any one of the second server groups other than the first server group among the N server groups, the first OTN device sends second target data to a second OTN device, and the first target data is sent to the second server through the second OTN device. The second OTN device is an OTN device associated with the second server group, and the second target data is optical signal data obtained based on the first target data.

[0010] Optionally, the first OTN device sending the second target data to the second OTN device and sending the first target data to the second server through the second OTN device includes: The first OTN device performs encapsulation processing on the first target data to obtain the second target data; The first OTN device uses the wavelength division multiplexing technology to send the second target data to the second OTN device through a first optical fiber, and the first optical fiber is the optical fiber between the first OTN device and the second OTN device; The second OTN device performs decapsulation processing on the second target data to obtain the first target data; The second OTN device sends the first target data to the second server.

[0011] In a third aspect, an embodiment of the present application provides a data center network system. The data center network system includes: N server groups and N optical transport network (OTN) devices. Each server group includes multiple servers. One server group is associated with one OTN device. The N OTN devices are connected by optical fibers. Data transmission between different server groups is carried out through the OTN devices associated with the corresponding server groups. Multiple servers in the first server group carry out data transmission through the OTN device associated with the first server group. The first server group is any one of the N server groups, and N is an integer greater than 1. A first OTN device, configured to determine a second server that receives the first target data according to the first target data sent by a first server. The first OTN device is any one of the N OTN devices. The first server is any one of the servers in the first server group associated with the first OTN device. The second server is another server in the first server group, or the second server is any one of the servers in a server group other than the first server group among the N server groups. The first target data is Ethernet data. The first OTN device is further configured to, when the second server is a server in the first server group, send the first target data to the second server. The first OTN device is further configured to, when the second server is any one of the servers in a second server group other than the first server group among the N server groups, send second target data to a second OTN device, and send the first target data to the second server through the second OTN device. The second OTN device is the OTN device associated with the second server group, and the second target data is optical signal data obtained based on the first target data.

[0012] In a fourth aspect, an embodiment of the present application provides an electronic device, including: a processor, a memory, and a program stored on the memory and executable on the processor. When the program is executed by the processor, the steps of the data transmission method described in the first aspect are implemented.

[0013] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the data transmission method described in the first aspect are implemented.

[0014] In the embodiments of the present application, by dividing the server into N server groups and associating one server group with one OTN device, a lightweight network architecture is constructed. By replacing the multi-level forwarding mode of traditional multi-layer switches with lightweight OTN devices, data does not need to pass through multiple electrical switching nodes, and cross-group optical direct transmission is achieved through direct optical fiber connection between OTN devices, significantly reducing transmission latency; the high-speed optical layer switching ability of OTN reduces the overhead of electrical layer protocol processing; in addition, the ultra-large bandwidth optical fiber transmission and non-blocking optical switching characteristics supported by OTN devices fully release the transmission potential of the physical layer, improving the data transmission efficiency of the data center network from multiple dimensions such as architecture simplification, latency optimization, and bandwidth utilization. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is one of the connection diagrams of a data center network system provided by an embodiment of the present application; Figure 2 is the second connection diagram of a data center network system provided by an embodiment of the present application; Figure 3 is the flowchart of a data transmission method provided by an embodiment of the present application; Figure 4 is the structural schematic diagram of a data center network system provided by an embodiment of the present application. Detailed Embodiments

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0018] The terms "first", "second", etc. in the embodiments of the present application are used to distinguish similar objects and do not necessarily describe a specific order or sequence. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0019] An embodiment of the present application provides a data center network system, including: N server groups and N optical transport network (OTN) devices. Each server group includes multiple servers. One server group is associated with one OTN device. The N OTN devices are connected by optical fibers. Data is transmitted between different server groups through the OTN devices associated with the corresponding server groups. Multiple servers in the first server group transmit data through the OTN device associated with the first server group. The first server group is any one of the N server groups, and N is an integer greater than 1.

[0020] Exemplarily, as a transmission device in the data center network system, the OTN device can be used to achieve high-speed, large-capacity, and long-distance data transmission and network networking. There is no need to configure complex network parameters (such as virtual local area network (VLAN), routing policy, etc.) for each server separately. Only group-level policies need to be configured uniformly on the associated OTN device. Multiple servers can be divided into a server group, and one server group is associated with one OTN device. By aggregating the data of the servers within the group, the high-speed optical layer interconnection capability of the OTN device is utilized to achieve efficient communication within the group. The data of different server groups can be transmitted in parallel on multiple optical fiber links between OTNs. Each group of data can be distributed through multiple non-overlapping optical paths, avoiding single-link congestion and making full use of the ultra-large bandwidth of the optical fiber.

[0021] In addition, for the application scenario of short-distance transmission within the data center, a lightweight OTN device design can be carried out, removing function modules related to long-distance transmission in the OTN device, such as erbium-doped fiber amplifier (EDFA), dispersion compensation module (DCM), forward error correction (FEC), etc. Retain the basic functions of optical-electric conversion, frame encapsulation, and wavelength division multiplexing (WDM) technology to reduce costs and power consumption.

[0022] In the embodiments of the present application, by dividing the server into N server groups and associating one server group with one OTN device, a lightweight network architecture is constructed. By replacing the multi-level forwarding mode of the traditional multi-layer switch with a lightweight OTN device, data does not need to pass through multiple electrical switching nodes, and cross-group optical direct transmission is realized through direct optical fiber connection between OTN devices, greatly reducing the transmission delay; the high-speed optical layer switching ability of OTN reduces the processing overhead of electrical layer protocols; in addition, the ultra-large bandwidth optical fiber transmission supported by OTN devices (such as wavelength division multiplexing technology) and the non-blocking optical switching characteristics fully release the transmission potential of the physical layer, improving the data transmission efficiency of the data center network from multiple dimensions such as architecture simplification, delay optimization, and bandwidth utilization.

[0023] Optionally, the N OTN devices are connected in a ring connection mode or a full connection mode.

[0024] In one embodiment, as Figure 1 shown, taking the case where 6 OTN devices are connected in a full connection mode and each server group includes 2 servers. In a full connection network, each OTN device is directly connected to the other 5 devices through 5 independent optical fiber links, and the total number of links is 15 (the formula for calculating the total number of links is: N(N - 1) / 2). When any OTN device or link fails, the data aggregated by the OTN device can bypass through other directly connected links. For example, when the link between OTN1 and OTN3 fails, it can be transmitted through multiple 2-hop paths such as OTN1→OTN2→OTN3 and OTN1→OTN4→OTN3, and the link with a shorter path is preferred during the transmission process. In the case of a single link failure in a full connection, it can automatically switch to other directly connected links without multi-hop bypass, further improving the data transmission efficiency.

[0025] In addition, by real-time monitoring the wavelength utilization rate of each directly connected link, the OTN device can preferentially select the directly connected link with the lowest load to transmit data. For example, when server group 2 transmits data to server group 5, if the current bandwidth utilization rate of the OTN2-OTN5 link reaches 80%, the OTN device can automatically switch to paths such as OTN2-OTN3-OTN5 or OTN2-OTN1-OTN5 to share the traffic using other low-load links. Since the shortest path for all cross-group communications is 1 hop, only 2-hop paths are selected when the directly connected link is congested, and the delay of the 2-hop path is still much lower than the multi-level forwarding of the traditional network.

[0026] In another embodiment, as Figure 2As shown in the figure, an example is given where 8 OTN devices are connected in a ring, and each server group includes 2 servers. When any link (such as the optical fiber between OTN3 and OTN4) fails, the OTN device can automatically switch to the reverse path (such as OTN3 → OTN2 → OTN1 → OTN8 → OTN7 → OTN6 → OTN5 → OTN4) through the bidirectional self-healing ring mechanism, and the fault recovery time is less than 50 ms, ensuring that the communication between servers is not interrupted. Only 8 optical fiber links are required to interconnect 8 OTN devices, significantly reducing the optical fiber laying cost and the complexity of computer room wiring. Moreover, the data of the 2 servers in each server group is first aggregated to the associated OTN device, and then directly reaches the OTN device of the target group through the ring network, avoiding the multi-level forwarding of multi-layer switches.

[0027] In this embodiment, the ring connection improves reliability and scalability through "low-cost redundancy", which is suitable for the general requirements of medium and large-scale data centers; the full connection method achieves extreme performance through "direct access without jumps", which is suitable for critical services sensitive to latency and bandwidth. Both methods rely on the optical layer switching ability of OTN to break through the hierarchical limitations of traditional electrical switching networks, and solve the problems of uneven traffic, high latency, and poor scalability at the architecture level. Users can select the appropriate connection method according to the scale of the data center and service characteristics (such as latency tolerance, budget cost), or adopt a hybrid architecture (such as full connection for some key nodes and ring interconnection for the remaining nodes) to achieve a balance between performance and cost.

[0028] Through this meshed network (MESH) design, all servers in the data center can communicate directly through OTN optical links, avoiding the process of forwarding through intermediate nodes in the traditional data center network architecture. Specifically, assume that there are M servers in the data center. In the traditional network, these servers may be interconnected through multiple switches, and each communication requires a complex path selection and load balancing process. In the solution proposed in this application, each server is directly connected to the other M - 1 servers through OTN optical links, forming a fully interconnected MESH structure. This structure not only simplifies the network architecture but also ensures that the communication path between each server is independent and fixed, eliminating the performance bottlenecks caused by path selection and load balancing. M is an integer greater than 1.

[0029] Optionally, the first OTN device includes multiple ports, the multiple ports are connected to multiple servers in the server group associated with the first OTN device, and one port is connected to one server, and the first OTN device is any one of the N OTN devices.

[0030] In this embodiment, multiple ports can be configured on each OTN device, and each port can be a high-speed port configured with 100G / 400G or above to support the direct access of servers in the data center network system and high-bandwidth requirements. In the traditional architecture, the server needs to be multi-hop forwarded through the access layer switch → aggregation layer switch → core layer device, while in this application, the server skips all electrical switching nodes through the port direct connection design of OTN and directly accesses the OTN device through the port on the OTN device. This eliminates the electrical signal processing delay of the access layer switch, reduces the equipment failure points, and improves the system reliability.

[0031] Moreover, when adding a new server, only the idle port on the OTN device needs to be enabled and the optical fiber needs to be connected. There is no need to configure switch VLAN, routing policies, etc. like in the traditional architecture. The controller automatically discovers the newly connected server port and dynamically allocates addresses, policies, and wavelength resources, shortening the deployment time.

[0032] Optionally, each of the OTN devices includes a data encapsulation module and a data decapsulation module. The data encapsulation module is used to encapsulate Ethernet data into optical signal data, and the decapsulation module is used to decapsulate the optical signal data into the Ethernet data.

[0033] In the embodiment of this application, the integrated data encapsulation module and decapsulation module of each OTN device can directly realize the bidirectional conversion between Ethernet data and optical signal data, avoiding the cumbersome process of multiple conversions between electrical signals and optical signals in the traditional network, reducing the intermediate links and conversion losses of data transmission, and thus significantly improving the data transmission efficiency. At the same time, the optical signal data has the characteristics of high bandwidth, low latency, and strong anti-interference ability, which can meet the high-speed and low-loss transmission requirements of large-volume data between data center servers. And the "electrical-optical" and "optical-electrical" conversion integration is realized in a built-in module manner, simplifying the network architecture, enhancing the compatibility and stability of the system, and providing underlying technical support for the direct access and efficient communication of internal servers in the data center.

[0034] Exemplarily, a certain server directly accesses the corresponding OTN device through a high-speed port. The OTN device receives the data from the server and performs OTN frame encapsulation through the data encapsulation module. At the same time, the wavelength division multiplexing technology is used to multiplex multiple data streams into the same optical fiber to achieve efficient signal transmission. The OTN device corresponding to the receiving-end server, after receiving the data stream transmitted through the optical fiber from the opposite end, performs decapsulation through the decapsulation module to restore the data to Ethernet data, and finally realizes the data transmission between the sending-end server and the receiving-end server.

[0035] Optionally, during the data transmission between any two of the OTN devices via an optical fiber, the optical fiber includes at least two data streams, and the data streams are data processed by using wavelength division multiplexing technology.

[0036] In the embodiments of the present application, at least two data streams processed by using wavelength division multiplexing technology during the transmission between any two OTN devices via an optical fiber can transmit multiple independent data in parallel by using different wavelengths in a single optical fiber, significantly improving the spectral utilization rate of the optical fiber, doubling the single-fiber transmission capacity, and meeting the high-bandwidth and large-traffic transmission requirements between servers inside the data center. At the same time, multiple data streams achieve physical-layer service isolation and parallel processing through wavelength isolation, reducing the dependence on optical fiber resources and the wiring cost. Moreover, independent channels can be provided for different service types (such as real-time communication and batch data transmission), enhancing the flexibility and reliability of transmission, effectively avoiding the impact of single-channel congestion or failure on the overall data transmission, and providing support for an efficient and stable communication architecture of the data center.

[0037] See Figure 3 , Figure 3 which is a flowchart of a data transmission method provided by the embodiments of the present application and is applied to a data center network system. As Figure 3 shown, the method includes the following steps: Step 301: A first OTN device determines a second server that receives the first target data according to the first target data sent by a first server. The first OTN device is any one of the N OTN devices, the first server is any one of the first server groups associated with the first OTN device, the second server is another server in the first server group, or the second server is any one of the server groups other than the first server group among the N server groups. The first target data is Ethernet data. In this step, the first OTN device accurately identifies the belonging (in the same group or across groups) of the target second server by parsing the Ethernet data sent by the first server, providing a decision basis for subsequent transmission path selection. It avoids the overhead of flooding broadcast or multi-layer routing protocol calculation in the traditional network and ensures the optimal selection of the data transmission path. In other words, direct local forwarding for in-group communication can be performed, and cross-group communication triggers optical layer encapsulation and cross-device interconnection, improving the data processing efficiency and reducing the loss of ineffective forwarding.

[0038] Step 302: When the second server is a server in the first server group, the first OTN device sends the first target data to the second server. In this step, when the second server is a server in the first server group, the first OTN device can directly forward data by using its internal high-speed optical switching capability without passing through an external optical fiber link or cross-device processing. This eliminates the electrical layer processing delays (such as MAC address lookup and queue scheduling) that are required for servers in the same cabinet / cluster to be forwarded through an access layer switch in the traditional architecture, enabling "zero-hop" direct transmission of data within the server group. This is especially suitable for distributed computing scenarios with high-frequency interactions, improving the data transmission efficiency between servers.

[0039] Step 303: When the second server is any server in the second server group other than the first server group among the N server groups, the first OTN device sends the second target data to the second OTN device, and the first target data is sent to the second server through the second OTN device. The second OTN device is an OTN device associated with the second server group, and the second target data is optical signal data obtained based on the first target data.

[0040] In this step, when the second server is in a different group, the first OTN device converts the Ethernet data into optical signal data through a data encapsulation module, and directly transmits it to the OTN device associated with the second server group through an optical fiber. Then, the receiving-end OTN device unpacks it and delivers it to the second server. This realizes direct optical layer communication across groups. By using fiber optic wavelength division multiplexing technology and the non-blocking switching capability of OTN, cross-group data can be transmitted in parallel at the physical layer, improving the single-link bandwidth. Moreover, the transmission delay is only determined by the fiber optic distance, breaking away from the cascaded forwarding bottleneck of traditional multi-layer switches and improving the data transmission efficiency. This is especially suitable for cross-cluster migrations with large amounts of data.

[0041] In the embodiments of the present application, first, a data center network system is provided. By dividing servers into N server groups and associating one server group with one OTN device, a lightweight network architecture is constructed. By replacing the multi-level forwarding mode of traditional multi-layer switches with lightweight OTN devices, data does not need to pass through multiple electrical switching nodes. Through direct optical fiber connection between OTN devices, cross-group optical direct transmission is achieved, significantly reducing transmission delay; the high-speed optical layer switching ability of OTN reduces the processing overhead of electrical layer protocols; in addition, the ultra-large bandwidth optical fiber transmission supported by OTN devices (such as wavelength division multiplexing technology) and the non-blocking optical switching characteristics fully release the transmission potential of the physical layer, improving the data transmission efficiency of the data center network from multiple dimensions such as architecture simplification, delay optimization, and bandwidth utilization. Secondly, a data transmission method applied to the data center network system is provided. The first OTN device accurately identifies the belonging (same group or cross-group) of the target server (i.e., the second server), avoiding blind forwarding and providing a decision basis for subsequent strategies; when the target server is in the same group, the OTN device directly forwards the data using its internal high-speed optical switching ability, eliminating the electrical signal processing delay of the access layer switch and achieving zero-hop direct access within the group, which is suitable for high-frequency and low-latency interactions; when the target server is cross-group, the OTN device encapsulates the Ethernet data into an optical signal and directly connects to the OTN device of the target group through an optical fiber, skipping multiple electrical switches, and taking advantage of the high bandwidth (wavelength division multiplexing), low latency (physical layer direct access), and non-blocking switching characteristics of optical layer transmission to completely eliminate the hierarchical forwarding bottleneck of the traditional architecture. The data transmission dynamically selects the optimal path according to the target attributes, that is, local communication within the group is efficiently processed, and cross-group communication is directly transmitted through the optical layer, comprehensively optimizing from path decision-making, transmission medium to processing level, and significantly improving the data transmission efficiency of the data center network.

[0042] Optionally, the first OTN device sending the second target data to the second OTN device and the second OTN device sending the first target data to the second server includes: The first OTN device performs encapsulation processing on the first target data to obtain the second target data; The first OTN device uses wavelength division multiplexing technology to send the second target data to the second OTN device through a first optical fiber, and the first optical fiber is the optical fiber between the first OTN device and the second OTN device; The second OTN device performs decapsulation processing on the second target data to obtain the first target data; The second OTN device sends the first target data to the second server.

[0043] In this embodiment, the first OTN device encapsulates the first target data to generate second target data in the form of an optical signal, and independently transmits it to the second OTN device using different wavelengths in a single first optical fiber through wavelength division multiplexing technology. This process utilizes the high-bandwidth characteristics of optical layer transmission and the wavelength isolation mechanism to achieve parallel and interference-free transmission of multiple data streams, avoiding port contention and queuing delays in traditional electrical switching. After the second OTN device decapsulates and restores the Ethernet data, it directly sends it to the second server. The end-to-end process integrates the integrated processing of electro-optical conversion, wavelength division multiplexing transmission, and opto-electrical conversion, eliminating the electrical signal forwarding loss of multiple-level switches in the traditional architecture, compressing the cross-group data transmission delay to the physical transmission time of the optical signal, and at the same time improving the fiber utilization rate through dynamic allocation of wavelength resources, providing efficient and reliable underlying transmission support for large-volume and low-latency communication across server groups in the data center.

[0044] See Figure 4 , Figure 4 FIG. is a schematic structural diagram of a data center network system provided by an embodiment of the present application. The data center network system 400 includes: N server groups and N optical transport network (OTN) devices. Each server group includes multiple servers. One server group is associated with one OTN device. The N OTN devices are connected by optical fibers. Data is transmitted between different server groups through the OTN devices associated with the corresponding server groups. Multiple servers in the first server group transmit data through the OTN device associated with the first server group. The first server group is any one of the N server groups, and N is an integer greater than 1. The first OTN device 401 is configured to determine a second server that receives the first target data according to the first target data sent by the first server. The first OTN device is any one of the N OTN devices. The first server is any one of the servers in the first server group associated with the first OTN device. The second server is another server in the first server group, or the second server is any one of the servers in a server group other than the first server group among the N server groups. The first target data is Ethernet data. The first OTN device 401 is further configured to send the first target data to the second server when the second server is a server in the first server group. The first OTN device 401 is further configured to, when the second server is any server in the second server group other than the first server group among the N server groups, send second target data to a second OTN device, and send the first target data to the second server through the second OTN device 402. The second OTN device is an OTN device associated with the second server group, and the second target data is optical signal data obtained based on the first target data.

[0045] Optionally, the sending the second target data to the second OTN device and sending the first target data to the second server through the second OTN device 402 includes: The first OTN device 401 performs encapsulation processing on the first target data to obtain the second target data; The first OTN device 401 uses wavelength division multiplexing technology to send the second target data to the second OTN device 402 through a first optical fiber, and the first optical fiber is an optical fiber between the first OTN device and the second OTN device; The second OTN device 402 performs decapsulation processing on the second target data to obtain the first target data; The second OTN device 402 sends the first target data to the second server.

[0046] The data center network system 400 can implement each process of the above embodiments of the data transmission method, and the technical features correspond one by one and can achieve the same technical effects. To avoid repetition, details are not described here again.

[0047] An embodiment of the present application further provides an electronic device, including: a processor, a memory, and a program stored on the memory and executable on the processor. When the program is executed by the processor, it implements each process of the above embodiment of the data transmission method and can achieve the same technical effects. To avoid repetition, details are not described here again.

[0048] An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements each process of the above embodiment of the data transmission method and can achieve the same technical effects. To avoid repetition, details are not described here again. The computer-readable storage medium includes, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc.

[0049] The embodiments of the present application also provide a computer program product, including computer instructions. When the computer instructions are executed by a processor, they implement each process of the above data transmission method embodiments and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0050] It should be noted that in this document, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the presence of another identical element in the process, method, article or device including such element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0051] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disc) and includes several instructions for causing a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present application.

[0052] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A data center network system, characterized in that, Including: N server groups and N optical transport network (OTN) devices. Each server group includes multiple servers. One server group is associated with one OTN device. The N OTN devices are connected by optical fibers. Data transmission between different server groups is carried out through the OTN devices associated with the corresponding server groups. Multiple servers in the first server group carry out data transmission through the OTN device associated with the first server group. The first server group is any one of the N server groups, and N is an integer greater than 1.

2. The data center network system according to claim 1, wherein The N OTN devices are connected in a ring connection mode or a full connection mode.

3. The data center network system according to claim 1, wherein The first OTN device includes multiple ports. The multiple ports are connected to multiple servers in the server group associated with the first OTN device, and one port is connected to one server. The first OTN device is any one of the N OTN devices.

4. The data center network system according to claim 1, wherein Each OTN device includes a data encapsulation module and a data decapsulation module. The data encapsulation module is used to encapsulate Ethernet data into optical signal data, and the decapsulation module is used to decapsulate the optical signal data into the Ethernet data.

5. The data center network system according to any one of claims 1 to 4, characterized in that During the data transmission between any two OTN devices through optical fibers, at least two data streams are included in the optical fibers. The data streams are data processed by wavelength division multiplexing technology.

6. A data transmission method, characterized in that, Applied to the data center network system according to any one of claims 1 to 5, the method includes: The first OTN device determines a second server that receives the first target data according to the first target data sent by the first server. The first OTN device is any one of the N OTN devices. The first server is any one of the servers in the first server group associated with the first OTN device. The second server is another server in the first server group, or the second server is any one of the servers in the server groups other than the first server group among the N server groups. The first target data is Ethernet data. When the second server is a server in the first server group, the first OTN device sends the first target data to the second server. When the second server is any one of the servers in the second server group other than the first server group among the N server groups, the first OTN device sends second target data to a second OTN device, and sends the first target data to the second server through the second OTN device. The second OTN device is the OTN device associated with the second server group, and the second target data is optical signal data obtained based on the first target data.

7. The method according to claim 6, characterized in that, The first OTN device sends the second target data to the second OTN device, and sends the first target data to the second server through the second OTN device, including: The first OTN device performs encapsulation processing on the first target data to obtain the second target data. The first OTN device uses wavelength division multiplexing technology to send the second target data to the second OTN device through a first optical fiber, where the first optical fiber is the optical fiber between the first OTN device and the second OTN device; The second OTN device performs a de-encapsulation process on the second target data to obtain the first target data; The second OTN device sends the first target data to the second server.

8. A data center network system, characterized in that, The data center network system includes: N server groups and N optical transport network (OTN) devices. Each server group includes multiple servers. One server group is associated with one OTN device. The N OTN devices are connected by optical fibers. Data transmission between different server groups is carried out through the OTN devices associated with the corresponding server groups. Multiple servers in the first server group perform data transmission through the OTN device associated with the first server group. The first server group is any one of the N server groups, and N is an integer greater than 1; A first OTN device, configured to determine a second server that receives the first target data according to the first target data sent by a first server. The first OTN device is any one of the N OTN devices. The first server is any one of the servers in the first server group associated with the first OTN device. The second server is another server in the first server group, or the second server is any one of the servers in a server group other than the first server group among the N server groups. The first target data is Ethernet data; The first OTN device is further configured to, when the second server is a server in the first server group, send the first target data to the second server; The first OTN device is further configured to, when the second server is any one of the servers in a second server group other than the first server group among the N server groups, send second target data to a second OTN device, and send the first target data to the second server through the second OTN device. The second OTN device is the OTN device associated with the second server group, and the second target data is optical signal data obtained based on the first target data.

9. An electronic device, characterized in that, Comprising: A processor, a memory, and a program stored on the memory and executable on the processor. When the program is executed by the processor, the steps of the data transmission method according to any one of claims 6 and 7 are implemented.

10. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the steps of the data transmission method according to any one of claims 6 and 7 are implemented.

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