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

Abstract

The application provides a data center network system, a data transmission method, an electronic device and a medium, relates to the technical field of communication, and 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, the N OTN devices are connected through optical fibers, data transmission is performed between different server groups through the OTN devices associated with the corresponding server groups, the plurality of servers in a first server group perform data transmission through the OTN device associated with the first server group, and the first server group is any one of the N server groups. The data transmission efficiency of the data center network is improved in multiple dimensions such as architecture simplification, time delay optimization and bandwidth utilization.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and in particular to a data center network system, a data transmission method, an electronic device and a medium. BACKGROUND

[0002] At present, the network of a data center generally adopts a multi-layer switch architecture. In a data center communication process, in order to realize interconnection of a large-scale server, a large number of switches and interconnection ports need to be configured, and data transmission between servers needs to pass through multiple levels of switches. The data center network based on the multi-layer switch architecture has a large number of layers. Since a Hash algorithm in a multi-path forwarding strategy of a switch cannot evenly distribute traffic, some links are prone to overload, while bandwidth of other links is not fully utilized. In addition, the multi-layer structure of the switch increases complexity and latency of the network, resulting in low data transmission efficiency. SUMMARY

[0003] Embodiments of the present 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 problems, the present application is implemented as follows:

[0005] In a first aspect, the embodiments of the present application provide a data center network system, comprising:

[0006] N server groups and N optical transport network (OTN) devices, each of the server groups comprising a plurality of servers, one of the server groups being associated with one of the OTN devices, the N OTN devices being connected through optical fibers, data transmission between different server groups being performed through OTN devices associated with the corresponding server groups, a plurality of servers in a first server group performing data transmission through an OTN device associated with the first server group, the first server group being any one of the N server groups, and N being an integer greater than 1.

[0007] Optionally, the N OTN devices are connected in a ring connection mode or a full connection mode.

[0008] Optionally, a first OTN device comprises a plurality of ports, the plurality of ports being connected to a plurality of servers in a server group associated with the first OTN device, and one port being connected to one server, the first OTN device being any one of the N OTN devices.

[0009] Optionally, each of the OTN devices comprises a data encapsulating module and a data decapsulating module, the data encapsulating module is configured to encapsulate Ethernet data into optical signal data, and the data decapsulating module is configured to decapsulate the optical signal data into the Ethernet data.

[0010] Optionally, during data transmission between any two of the OTN devices through an optical fiber, at least two data streams are included in the optical fiber, and the data streams are data processed by using wavelength division multiplexing technology.

[0011] In a second aspect, an embodiment of the present application provides a data transmission method applied to the data center network system as described in the first aspect, and the method comprises the following steps:

[0012] The first OTN device determines a second server receiving 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 a 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 a server group other than the first server group in the N server groups, and the first target data is Ethernet data.

[0013] In the case that the second server is a server in the first server group, the first OTN device sends the first target data to the second server.

[0014] In the case that the second server is any one of a second server group other than the first server group in 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 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.

[0015] Optionally, 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, and the method comprises the following steps:

[0016] The first OTN device encapsulates the first target data to obtain the second target data.

[0017] The first OTN device sends the second target data to the second OTN device through a first optical fiber by using wavelength division multiplexing technology, and the first optical fiber is an optical fiber between the first OTN device and the second OTN device.

[0018] The second OTN device performs decapsulation processing on the second target data to obtain the first target data.

[0019] The second OTN device sends the first target data to the second server.

[0020] In a third aspect, an embodiment of the present application provides a data center network system, which comprises N server groups and N OTN devices, each of the server groups comprises a plurality of servers, one of the server groups is associated with one of the OTN devices, the N OTN devices are connected through optical fibers, different server groups are connected through OTN devices associated with the corresponding server groups, a plurality of servers in a first server group are connected through an 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.

[0021] A first OTN device is configured to determine a second server receiving first target data sent by a first server according to the first target data, the first OTN device is any one of the N OTN devices, the first server is any one of servers in a 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 servers in a second server group other than the first server group in the N server groups, and the first target data is Ethernet data.

[0022] The first OTN device 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.

[0023] The first OTN device is further configured to send second target data to a second OTN device when the second server is any one of servers in the second server group other than the first server group in the N server groups, send the first target data 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.

[0024] In a fourth aspect, an embodiment of the present application provides an electronic device, which comprises a processor, a memory, and a program stored in the memory and capable of running on the processor, and the program, when executed by the processor, implements the steps of the data transmission method according to the first aspect.

[0025] In a fifth aspect, an embodiment of the present application provides a computer readable storage medium, and the computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the steps of the data transmission method according to the first aspect.

[0026] In the embodiment of the present application, the server is divided into N server groups, and one server group is associated with one OTN device, a light-weight network architecture is constructed, the multi-stage forwarding mode of the traditional multi-layer switch is replaced by the light-weight OTN device, the data does not need to pass through multiple electrical switching nodes, the cross-group optical direct transmission is realized through the optical fiber direct connection between the OTN devices, the transmission delay is greatly reduced, the optical layer high-speed switching capability of the OTN is used to reduce the electrical layer protocol processing overhead, in addition, the super large bandwidth optical fiber transmission and the non-blocking optical switching characteristics supported by the OTN device fully release the transmission potential of the physical layer, and the data center network data transmission efficiency is improved in multiple dimensions such as architecture simplification, delay optimization and bandwidth utilization. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is one of the connection diagrams of the data center network system provided by the embodiment of the present application;

[0029] Figure 2 is the second connection diagram of the data center network system provided by the embodiment of the present application;

[0030] Figure 3 is a flowchart of the data transmission method provided by the embodiment of the present application;

[0031] Figure 4 is a structural schematic diagram of the data center network system provided by the embodiment of the present application. DETAILED DESCRIPTION

[0032] The technical solutions of the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0033] The terms "first", "second", and the like in the embodiments of the present application are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, a method, a system, a product, or an apparatus that includes a series of steps or units does not necessarily have to include only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to the process, the method, the product, or the apparatus.

[0034] The embodiments of the present application provide a data center network system, comprising:

[0035] N server groups and N OTN (Optical Transport Network) devices, each of the server groups comprises a plurality of servers, one of the server groups is associated with one of the OTN devices, the N OTN devices are connected through optical fibers, data transmission between different server groups is performed through the OTN devices associated with the corresponding server groups, the plurality of servers in a 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.

[0036] Exemplarily, the OTN device serves as a transmission device in the data center network system, and can be used to implement high-speed, large-capacity, and long-distance data transmission and network networking. Without separately configuring complex network parameters (such as a VLAN (Virtual Local Area Network), a routing strategy, and the like) for each server, only group-level strategies need to be uniformly configured on the associated OTN device. A plurality of servers can be divided into one server group, and one server group is associated with one OTN device. Through aggregation of data of servers in the group, high-speed interconnection capability of the optical layer of the OTN device is utilized to implement efficient communication in the group, and data of different server groups can be transmitted in parallel on a plurality of optical fiber links between the OTN devices. Data of each group can be distributed through a plurality of non-overlapping optical paths, single-link congestion is avoided, and the super-large bandwidth of the optical fiber is fully utilized.

[0037] In addition, for the application scenario of short-distance transmission inside the data center, a lightweight OTN device can be designed, and function modules related to long-distance transmission, such as an erbium-doped fiber amplifier (EDFA), a dispersion compensation module (DCM), and forward error correction (FEC), can be removed from the OTN device. The basic optical-electric conversion, frame encapsulation function, and wavelength division multiplexing (WDM) technology are retained to reduce the cost and power consumption.

[0038] In the embodiments of the present application, the server is divided into N server groups, and one server group is associated with one OTN device, a lightweight network architecture is constructed, the multi-stage forwarding mode of the traditional multi-layer switch is replaced by the lightweight OTN device, the data does not need to pass through multiple electrical switching nodes, the cross-group optical direct transmission is realized through the direct connection of optical fibers between OTN devices, the transmission delay is greatly reduced, the electrical layer protocol processing overhead is reduced by using the high-speed switching capability of the optical layer of the OTN, and in addition, the super-large bandwidth optical fiber transmission (such as wavelength division multiplexing technology) and the non-blocking optical switching characteristics supported by the OTN device fully release the transmission potential of the physical layer, and the data transmission efficiency of the data center network is improved in multiple dimensions such as architecture simplification, delay optimization, and bandwidth utilization.

[0039] Optionally, the N OTN devices are connected in a ring connection mode or a full connection mode.

[0040] In an embodiment, as shown in FIG. 6, six OTN devices are connected in a full connection mode, and each server group includes two servers. Figure 1 In the full connection network, each OTN device is directly connected to the other five devices through five independent optical fiber links, and the total number of links is 15 (the total number of links is calculated by the formula: N(N-1) / 2). When any OTN device or link fails, the data aggregated by the OTN device can be bypassed through other direct connection links. For example, when the link between OTN1 and OTN3 fails, the data can be transmitted through OTN1→OTN2→OTN3 or OTN1→OTN4→OTN3, and the link with a shorter path is preferred in the transmission process. The full connection can automatically switch to other direct connection links when a single link fails, without bypassing multiple hops, further improving the data transmission efficiency.

[0041] Furthermore, OTN devices can prioritize data transmission via the lowest-load direct link by monitoring the wavelength utilization of each direct link in real time. For example, when server group 2 transmits data to server group 5, if the current bandwidth utilization 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 communication is one hop, a two-hop path is only selected when direct links are congested, and the latency of a two-hop path is still much lower than that of multi-level forwarding in traditional networks.

[0042] In another embodiment, such as Figure 2 As shown, taking an example of 8 OTN devices connected in a ring network, with each server group consisting of 2 servers, when any link (such as the fiber between OTN3 and OTN4) fails, the OTN devices can automatically switch to the reverse path (such as OTN3→OTN2→OTN1→OTN8→OTN7→OTN6→OTN5→OTN4) through a bidirectional self-healing ring mechanism. The fault recovery time is less than 50ms, ensuring uninterrupted communication between servers. Only 8 fiber optic links are needed to interconnect 8 OTN backups, significantly reducing fiber optic laying costs and data center cabling complexity. Furthermore, data from the 2 servers in each server group is first aggregated to the associated OTN device, and then directly reaches the OTN device in the target group through the ring network, avoiding multi-level forwarding by multi-layer switches.

[0043] In this embodiment, the ring connection improves reliability and scalability through "low-cost redundancy," making it suitable for the general needs of medium- to large-scale data centers; the full-connectivity approach achieves ultimate performance through "no-hop direct access," making it suitable for mission-critical services sensitive to latency and bandwidth. Both approaches rely on the optical layer switching capabilities of OTN, breaking the hierarchical limitations of traditional electrical switching networks and solving the problems of uneven traffic, high latency, and poor scalability at the architectural level. Users can choose the appropriate connection method based on the size of the data center and service characteristics (such as latency tolerance and budget), or adopt a hybrid architecture (such as full connectivity for some key nodes and ring interconnection for the remaining nodes) to achieve a balance between performance and cost.

[0044] Through the mesh network (MESH) design, all servers in the data center can communicate directly through the OTN optical link, avoiding the process of forwarding through intermediate nodes in the traditional data center network architecture. Specifically, assuming that there are M servers in the data center, in the traditional network, these servers can be interconnected through multiple switches, and each communication needs to go through a complex path selection and load balancing process. In the scheme proposed in the present application, each server is directly connected to the other M-1 servers through the OTN optical link, 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 bottleneck caused by path selection and load balancing. M is an integer greater than 1.

[0045] Optionally, the first OTN device includes a plurality of ports, the plurality of ports are connected to a plurality of servers in a server group associated with the first OTN device, and one of the ports is connected to one of the servers, and the first OTN device is any one of the N OTN devices.

[0046] 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 and above to support the direct access and high-bandwidth requirements of servers in the data center network system. In the traditional architecture, the server needs to be forwarded through multiple levels of access layer switches, aggregation layer switches, and core layer devices, while the present application directly connects the server through the OTN port on the OTN device, skipping all electrical switching nodes and directly accessing the OTN device through the port on the OTN device. The electrical signal processing delay of the access layer switch is saved, the device failure point is reduced, and the system reliability is improved.

[0047] In addition, when a new server is added, only the idle port on the OTN device needs to be enabled and connected to the optical fiber, without the need to configure switches VLAN, routing policies and the like as in the traditional architecture. The newly connected server port is automatically discovered by the controller, and the address and policy and wavelength resources are dynamically allocated, shortening the deployment time.

[0048] 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.

[0049] In the embodiments of the present application, the data encapsulation module and the data decapsulation module integrated in each OTN device can directly realize 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 intermediate links and conversion loss of data transmission, thereby significantly improving the data transmission efficiency. Meanwhile, the optical signal data has the characteristics of high bandwidth, low delay and strong anti-interference capability, which can meet the high-speed and low-loss transmission requirements of large-flow data between data center servers. In addition, the integration of "electrical-optical" and "optical-electrical" conversion is realized by the built-in module, which simplifies the network architecture and enhances the compatibility and stability of the system, thereby providing bottom technical support for the direct access and efficient communication of the internal servers of the data center.

[0050] For example, a certain server directly accesses the corresponding OTN device through a high-speed port. The OTN device receives data from the server and performs OTN frame encapsulation through the data encapsulation module, and simultaneously uses wavelength division multiplexing technology to multiplex multiple data streams into the same optical fiber, thereby realizing efficient signal transmission. The OTN device corresponding to the server at the receiving end receives the data stream transmitted by the opposite end through the optical fiber, and performs decapsulation through the data decapsulation module to restore the data to Ethernet data, thereby realizing data transmission between the server at the sending end and the server at the receiving end.

[0051] Optionally, at least two data streams processed by the wavelength division multiplexing technology are included in the optical fiber during the data transmission process between any two OTN devices.

[0052] In the embodiments of the present application, at least two data streams processed by the wavelength division multiplexing technology are used for transmission between any two OTN devices, which can utilize different wavelengths to transmit multiple independent data in parallel in a single optical fiber, thereby significantly improving the spectral utilization rate of the optical fiber, doubling the single-fiber transmission capacity, and meeting the transmission requirements of high bandwidth and large flow between internal servers of the data center. Meanwhile, the multiple data streams are processed in parallel through wavelength isolation to realize service isolation and parallel processing at the physical layer, thereby reducing the dependence on optical fiber resources and reducing the wiring cost. In addition, independent channels can be provided for different service types (such as real-time communication and batch data transmission), thereby enhancing the flexibility and reliability of transmission, effectively avoiding the influence of single-channel congestion or failure on overall data transmission, and providing support for efficient and stable communication architecture of the data center.

[0053] Referring to Figure 3 , Figure 3 is a flowchart of a data transmission method provided by the embodiments of the present application, which is applied to a data center network system, as shown in Figure 3 The method comprises the following steps:

[0054] Step 301, the first OTN device determines a second server receiving 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 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 N server groups except the first server group, and the first target data is Ethernet data.

[0055] In this step, the first OTN device accurately identifies the ownership (same group or cross-group) of the target second server by analyzing the Ethernet data sent by the first server, providing a decision basis for subsequent transmission path selection. This avoids the overhead of traditional network flooding broadcast or multi-layer routing protocol calculation, ensuring the optimal selection of data transmission path. In other words, same group communication can be directly forwarded locally, cross-group communication triggers optical layer encapsulation and cross-device interconnection, improving data processing efficiency and reducing invalid forwarding loss.

[0056] Step 302, in the case where the second server is a server in the first server group, the first OTN device sends the first target data to the second server.

[0057] In this step, in the case where the second server is a server in the first server group, the first OTN device can directly forward data using its internal high-speed optical switching capability without going through external fiber links or cross-device processing. This eliminates the electrical layer processing delay (such as MAC address lookup and queue scheduling) required for forwarding between servers in the same cabinet / cluster in traditional architectures, realizing "zero-hop" direct transmission of data within the server group, especially suitable for high-frequency interactive distributed computing scenarios, and improving the efficiency of data transmission between servers.

[0058] Step 303, in the case where the second server is any one of the second server group in the N server groups except the first server group, 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, 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.

[0059] In this step, when the second server is cross-group, the first OTN device converts the Ethernet data into optical signal data through a data encapsulation module, transmits the optical signal data to the OTN device associated with the second server group through a fiber direct connection, and delivers the second server after the OTN device at the receiving end decapsulates the optical signal data. The optical layer direct connection of cross-group communication is realized. By using the fiber wavelength division multiplexing technology and the non-blocking switching capability of OTN, the cross-group data can be transmitted in parallel at the physical layer, the single-link bandwidth is improved, and the transmission delay is only determined by the fiber distance, so that the cascading forwarding bottleneck of the traditional multi-layer switch is broken, the data transmission efficiency is improved, and the cross-cluster migration of large data is particularly suitable.

[0060] In the embodiments of the present application, first, a data center network system is provided, in which servers are divided into N server groups, and one server group is associated with one OTN device, a lightweight network architecture is constructed, the multi-stage forwarding mode of the traditional multi-layer switch is replaced by the lightweight OTN device, the data does not need to pass through multiple electrical switching nodes, the cross-group optical direct connection transmission is realized through the fiber direct connection between the OTN devices, and the transmission delay is greatly reduced; the optical layer high-speed switching capability of OTN reduces the electrical layer protocol processing overhead; in addition, the OTN device supports the ultra-large bandwidth fiber transmission (such as the wavelength division multiplexing technology) and the non-blocking optical switching feature, and fully releases the transmission potential of the physical layer, so that the data transmission efficiency of the data center network is improved in 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 attribution (same group or cross-group) of the target server (i.e. the second server), avoids blind forwarding, and provides a decision basis for subsequent strategies; when the target server is in the same group, the OTN device directly forwards the data by using the internal high-speed optical switching capability, saves the electrical signal processing delay of the access layer switch, realizes the zero-hop direct connection in the group, and is suitable for high-frequency and low-latency interaction; when the target server is cross-group, the OTN device encapsulates the Ethernet data into an optical signal, directly connects the target group OTN device through an optical fiber, skips multiple electrical switches, and utilizes the high bandwidth (wavelength division multiplexing), low latency (physical layer direct connection), and non-blocking switching characteristics of the 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 attribute, that is, the same group communication is localized and efficiently processed, and the cross-group communication is directly transmitted through the optical layer. From the path decision, transmission medium to the processing level, the data center network is fully optimized, and the data transmission efficiency of the data center network is significantly improved.

[0061] Optionally, 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.

[0062] The first OTN device encapsulates the first target data to obtain the second target data.

[0063] The first OTN device sends the second target data to the second OTN device through a first optical fiber by using wavelength division multiplexing technology, and the first optical fiber is an optical fiber between the first OTN device and the second OTN device.

[0064] The second OTN device performs decapsulation processing on the second target data to obtain the first target data.

[0065] The second OTN device sends the first target data to the second server.

[0066] In the embodiment, the first OTN device encapsulates the first target data to generate second target data in the form of an optical signal, and transmits the second target data to the second OTN device by using different wavelengths in a single first optical fiber by using wavelength division multiplexing technology. The process realizes parallel and interference-free transmission of multiple data by using the high-bandwidth characteristics and wavelength isolation mechanism of optical layer transmission, and avoids port competition and queuing delay of traditional electrical switching. The second OTN device directly sends the Ethernet data recovered by decapsulation to the second server. The end-to-end process integrates the integrated processing of electrical-optical conversion, wavelength division multiplexing transmission and optical-electrical conversion, saves the electrical signal forwarding loss of multiple switches in the traditional architecture, compresses the cross-group data transmission delay to the physical transmission time of the optical signal, and improves the optical fiber utilization by dynamically allocating wavelength resources. The data center network system provided by the embodiment of the application provides efficient and reliable underlying transmission support for large-flow and low-latency communication between server groups.

[0067] Referring to Figure 4 , Figure 4 is a structural schematic diagram of a data center network system provided by the embodiment of the 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. Different server groups transmit data through the OTN devices associated with the corresponding server groups. The multiple servers in a 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. N is an integer greater than 1.

[0068] The first OTN device 401 is configured to determine a second server receiving first target data according to the first target data sent by a first server, the first OTN device being any one of the N OTN devices, the first server being any one of a first server group associated with the first OTN device, the second server being another server in the first server group, or the second server being any one of a server group other than the first server group in the N server groups, and the first target data being Ethernet data.

[0069] 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.

[0070] The first OTN device 401 is further configured to send second target data to a second OTN device when the second server is any one of a second server group other than the first server group in the N server groups, and send the first target data to the second server through the second OTN device 402, the second OTN device being an OTN device associated with the second server group, and the second target data being optical signal data obtained based on the first target data.

[0071] Optionally, the sending of the second target data to the second OTN device and the sending of the first target data to the second server through the second OTN device 402 include:

[0072] The first OTN device 401 encapsulates the first target data to obtain the second target data.

[0073] The first OTN device 401 sends the second target data to the second OTN device 402 through a first optical fiber by using wavelength division multiplexing technology, the first optical fiber being an optical fiber between the first OTN device and the second OTN device.

[0074] The second OTN device 402 decapsulates the second target data to obtain the first target data.

[0075] The second OTN device 402 sends the first target data to the second server.

[0076] The data center network system 400 corresponds to each process of each embodiment of the above data transmission method in terms of technical features and achieves the same technical effects. To avoid repetition, details are not described herein.

[0077] The embodiment of the present application further provides an electronic device, comprising a processor, a memory, and a program stored in the memory and executable on the processor, the program being executed by the processor to implement each process of the data transmission method embodiment and achieve the same technical effects. To avoid repetition, no further description is given here.

[0078] The embodiment of the present application further provides a computer readable storage medium, which stores a computer program, the computer program being executed by a processor to implement each process of the data transmission method embodiment and achieve the same technical effects. To avoid repetition, no further description is given here. The computer readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, etc.

[0079] The embodiment of the present application further provides a computer program product, which comprises computer instructions, the computer instructions being executed by a processor to implement each process of the data transmission method embodiment and achieve the same technical effects. To avoid repetition, no further description is given here.

[0080] It should be noted that, in this document, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles, or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles, or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article, or device that includes the 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, but can also include performing functions in a substantially simultaneous manner or in the opposite order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0081] Those skilled in the art can clearly understand the above-mentioned embodiment method can be realized by means of software and the necessary general hardware platform, of course, also can be through hardware, but many cases the former is the better embodiment. Based on such understanding, the technical solutions of the present application essentially or say the part of the contribution to the prior art can be embodied in the form of software products, the computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disc), including a number of instructions to make a terminal (may be a mobile phone, computer, server, air conditioner, or network equipment, etc.) executes the method described in various embodiments of the present application.

[0082] The embodiments of the present application are described above in conjunction with the drawings, but the present application is not limited to the above-mentioned specific embodiments, the above-mentioned specific embodiments are only illustrative, but not limited, those skilled in the art can make many forms without departing from the purpose of the present application and the scope of the claims under the inspiration of the present application, all belong to the protection of the present application.

Claims

1. A data center network system, characterized in that, include: There are 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 fiber. Different server groups transmit data through the OTN devices associated with the corresponding server groups. Multiple servers in a first server group transmit data through the OTN devices associated with the first server group. The first server group is any one of the N server groups, where N is an integer greater than 1. The first OTN device includes multiple ports, each of which is configured with a high-speed port of 100G / 400G or above; 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. Each OTN device includes a data encapsulation module and a data decapsulation module. The data encapsulation module encapsulates Ethernet data into optical signal data, and the decapsulation module decapsulates the optical signal data back into Ethernet data. The OTN device receives data from a server and performs OTN frame encapsulation using the data encapsulation module, while simultaneously using wavelength division multiplexing (WDM) technology to multiplex multiple data streams onto the same optical fiber. The OTN device corresponding to the server at the receiving end, after receiving the data stream transmitted through the optical fiber from the other end, decapsulates it using the decapsulation module to restore the data to Ethernet data. During the data transmission between any two OTN devices via optical fiber, the optical fiber includes at least two data streams, which are data processed using wavelength division multiplexing (WDM) technology.

2. The data center network system according to claim 1, characterized in that, The N OTN devices are connected using either a ring connection or a full connection method.

3. A data transmission method, characterized in that, Applied to a data center network system as described in any one of claims 1 to 2, the method comprises: The first OTN device determines the second server to receive the first target data based on 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, and the second server is another server in the first server group, or the second server is any one of the servers in the N server groups other than the first server group. The first target data is Ethernet data. If 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 the second target data to the second OTN device, and the second OTN device sends the first target data to the second server. 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.

4. The method according to claim 3, characterized in that, The first OTN device sends the second target data to the second OTN device, and the second OTN device then sends the first target data to the second server, including: The first OTN device encapsulates the first target data to obtain the second target data; The first OTN device uses wavelength division multiplexing technology to transmit the second target data to the second OTN device through the first optical fiber, wherein the first optical fiber is the optical fiber between the first OTN device and the second OTN device; The second OTN device decapsulates the second target data to obtain the first target data; The second OTN device sends the first target data to the second server.

5. 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 fiber. Different server groups transmit data through the OTN devices associated with the corresponding server groups. Multiple servers in a first server group transmit data through the OTN devices associated with the first server group. The first server group is any one of the N server groups, where N is an integer greater than 1. The first OTN device includes multiple ports, each of which is configured with a high-speed port of 100G / 400G or above; 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. Each OTN device includes a data encapsulation module and a data decapsulation module. The data encapsulation module encapsulates Ethernet data into optical signal data, and the decapsulation module decapsulates the optical signal data back into Ethernet data. The OTN device receives data from a server and performs OTN frame encapsulation using the data encapsulation module, while simultaneously using wavelength division multiplexing (WDM) technology to multiplex multiple data streams onto the same optical fiber. The OTN device corresponding to the server at the receiving end, after receiving the data stream transmitted through the optical fiber from the other end, decapsulates it using the decapsulation module to restore the data to Ethernet data. A first OTN device is configured to determine a second server receiving the first target data based on 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 first server groups associated with the first OTN device, and 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 in the N server groups. The first target data is Ethernet data. The first OTN device 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 is further configured to send second target data to the second OTN device when the second server is any one of the second server groups other than the first server group among the N server groups, and to send the first target data 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.

6. An electronic device, characterized in that, include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the data transfer method as described in any one of claims 3 and 4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the data transmission method as described in any one of claims 3 and 4.

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