Data center communication method and system

Abstract

This application discloses a data center communication method applied to a data center communication system. The system includes a first module and a second module. The first module includes a first transmission device, a first core switch, and a first aggregation switch. The second module includes a second transmission device and a second core switch. The method includes: the first aggregation switch aggregating signals sent by each first core switch and sending them to the first transmission device; the first transmission device converting and amplifying the received signals and transmitting them to the second transmission device via optical fiber; the second transmission device sending the received signals to each second core switch; and two pairs of optical fibers connecting the first and second modules, serving as a primary route and a backup route. This application also discloses a data center communication method, apparatus, transmission device, and storage medium. Therefore, it can meet the large data volume communication needs between different modules in a data center and reduce optical fiber usage.

Description

Technical Field

[0001] This application relates to the field of data center technology, and in particular to a data center communication method, system, apparatus, transmission equipment, and computer-readable storage medium. Background Technology

[0002] A data center typically refers to a physical space where information is centrally processed, stored, transmitted, exchanged, and managed. It includes a complex set of facilities, with computer equipment, server equipment, network equipment, and storage devices generally considered key equipment. Different areas within a data center, such as different buildings or server rooms, can be referred to as different "modules." Currently, communication between modules generally uses direct fiber optic connections, with multiple routes planned to mitigate the risk of significant traffic drops due to fiber optic outages. This approach, however, requires a large amount of fiber optic cable. Summary of the Invention

[0003] The main purpose of this application is to propose a data center communication method, system, device, transmission equipment, and computer-readable storage medium, aiming to solve the problem of reducing fiber optic cable usage when transmitting large amounts of data between different modules in a data center.

[0004] To achieve the above objectives, embodiments of this application provide a data center communication system, the system including at least one first module and at least one second module, the first module including one or more first transmission devices, a first core switch and a first aggregation switch, and the second module including one or more second transmission devices and a second core switch;

[0005] The first aggregation switch is used to aggregate the signals sent by each of the first core switches and send the aggregated signals to the first transmission device;

[0006] The first transmission device is used to receive signals from the first aggregation switch, convert and amplify the signals, and then transmit them to the second transmission device via optical fiber;

[0007] The second transmission device is used to receive signals transmitted by the first transmission device through the optical fiber, and to send the received signals to each of the second core switches;

[0008] The first module and the second module are connected by two pairs of optical fibers, one pair of which serves as the primary route and the other pair of which serves as the backup route.

[0009] Optionally, both the first transmission device and the second transmission device include an optical layer and an electrical layer, wherein the optical layer is configured with optical multiplexer protection.

[0010] Optionally, the electrical layer in the first transmission device is used to convert ordinary optical signals received from the first aggregation switch into optical signals of standard wavelengths.

[0011] The optical layer in the first transmission device is used to amplify the converted optical signal through an optical amplifier, and then transmit the amplified optical signal to the second transmission device through an optical fiber.

[0012] Optionally, the first transmission device simultaneously transmits the signal to both the primary route and the backup route for transmission to the second transmission device;

[0013] The second transmission device receives the signal transmitted by the first transmission device from the primary route.

[0014] Optionally, the second transmission device is further configured to monitor the status of the primary route and the backup route, and switch to the backup route to receive the signal if a problem is detected in the primary route.

[0015] Optionally, the first transmission device and each of the first aggregation switches, the first aggregation switches and each of the first core switches, and the second transmission device and each of the second core switches all adopt a fully interconnected networking method.

[0016] Optionally, the system further includes at least one third module, which includes one or more third transmission devices, a third core switch, and a third aggregation switch. Each first aggregation switch is fully interconnected with all first core switches and all third core switches. Each third aggregation switch is fully interconnected with all first core switches and all third core switches. The first transmission device is fully interconnected with all first aggregation switches and all third aggregation switches. The third transmission device is fully interconnected with all first aggregation switches and all third aggregation switches.

[0017] Optionally, the second module includes two second transmission devices, one of which is interconnected with the first transmission device of the first module via two pairs of optical fibers, and the other second transmission device is interconnected with the third transmission device of the third module via two pairs of optical fibers.

[0018] Furthermore, to achieve the above objectives, this application also provides a data center communication method applied to a data center communication system. The data center communication system includes at least one first module and at least one second module. The first module includes one or more first transmission devices, a first core switch, and a first aggregation switch. The second module includes one or more second transmission devices and a second core switch. The method includes:

[0019] The first aggregation switch aggregates the signals sent by each of the first core switches and sends the aggregated signals to the first transmission device;

[0020] The first transmission device receives a signal from the first aggregation switch, converts and amplifies the signal, and then transmits it to the second transmission device via optical fiber;

[0021] The second transmission device receives the signal transmitted by the first transmission device through the optical fiber and sends the received signal to each of the second core switches;

[0022] The first module and the second module are connected by two pairs of optical fibers, one pair of which serves as the primary route and the other pair of which serves as the backup route.

[0023] Optionally, the first transmission device receives a signal from the first aggregation switch, converts and amplifies the signal, and then transmits it to the second transmission device via optical fiber, including:

[0024] The electrical layer in the first transmission device converts the ordinary optical signal received from the first aggregation switch into a standard wavelength optical signal.

[0025] The optical layer in the first transmission device amplifies the converted optical signal using an optical amplifier, and then transmits the amplified optical signal to the second transmission device via an optical fiber.

[0026] Optionally, the first transmission device transmitting the signal to the second transmission device via optical fiber includes: simultaneously transmitting the signal to the primary route and the backup route;

[0027] The second transmission device receiving the signal transmitted by the first transmission device through the optical fiber includes: receiving the signal transmitted by the first transmission device from the primary route.

[0028] Optionally, the method further includes:

[0029] The second transmission device monitors the status of the primary route and the backup route, and switches to the backup route to receive the signal if a problem is detected in the primary route.

[0030] To achieve the above objectives, embodiments of this application also provide a data center communication method, applied in the transmission equipment of various modules of a data center, the method comprising:

[0031] Receive a first signal from the aggregation switch of the current module, wherein the first signal is a signal sent by each core switch of the current module aggregated by the aggregation switch;

[0032] The first signal is converted and amplified and then transmitted to the transmission device of another module via optical fiber;

[0033] Receive the second signal transmitted by the transmission device of the other module through the optical fiber;

[0034] The second signal is sent to each of the aggregation switches, and then transmitted to each of the core switches of the current module;

[0035] The current module and the other module are connected by two pairs of optical fibers, one pair of which serves as the primary route and the other pair of which serves as the backup route.

[0036] Optionally, the transmission device that converts and amplifies the first signal and transmits it to another module via optical fiber includes:

[0037] The electrical layer in the transmission device converts ordinary optical signals received from the aggregation switch into optical signals of standard wavelengths.

[0038] The optical layer in the transmission device amplifies the converted optical signal through an optical amplifier, and then transmits the amplified optical signal through an optical fiber to the transmission device of the other module.

[0039] Optionally, the transmission device that transmits the amplified first signal to another module via optical fiber includes: simultaneously transmitting the amplified first signal to both the primary route and the backup route;

[0040] The second signal transmitted by the transmission device receiving the other module through the optical fiber includes: receiving the second signal from the primary route.

[0041] Optionally, the method further includes:

[0042] Monitor the status of the primary route and the backup route, and if a problem is detected with the primary route, switch to the backup route to receive the second signal.

[0043] To achieve the above objectives, embodiments of this application also provide a data center communication device, applied in the transmission equipment of various modules of a data center, the device comprising:

[0044] A receiving unit is configured to receive a first signal from the aggregation switch of the current module, wherein the first signal is a signal sent by each core switch of the current module aggregated by the aggregation switch;

[0045] A transmission unit is used to convert and amplify the first signal and then transmit it to another module via optical fiber.

[0046] The receiving unit is also used to receive a second signal transmitted by the transmission device of the other module through the optical fiber;

[0047] The transmission unit is also used to send the second signal to each of the aggregation switches, and then transmit it to each of the core switches of the current module;

[0048] The current module and the other module are connected by two pairs of optical fibers, one pair of which serves as the primary route and the other pair of which serves as the backup route.

[0049] To achieve the above objectives, this application also provides a transmission device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the data center communication method described above.

[0050] To achieve the above objectives, embodiments of this application also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the data center communication method as described above.

[0051] The data center communication method, system, apparatus, transmission equipment, and computer-readable storage medium proposed in this application no longer use direct fiber optic connections, but instead use transmission equipment for signal transmission, thereby meeting the large data volume communication needs between different modules in the data center, improving the utilization rate of fiber optic links, and reducing fiber optic occupancy. Attached Figure Description

[0052] Figure 1 This is an architecture diagram of a data center communication system proposed in the first embodiment of this application;

[0053] Figure 2 This is a schematic diagram of a communication link between data center modules in an existing technical solution;

[0054] Figures 3A-3B This is a schematic diagram illustrating the switching between a primary route and a backup route in this application;

[0055] Figure 4 This is a schematic diagram of a communication link between data center modules according to this application;

[0056] Figure 5 This is a flowchart of a data center communication method proposed in the second embodiment of this application;

[0057] Figure 6 This is a flowchart of a data center communication method proposed in the third embodiment of this application;

[0058] Figure 7 This is a flowchart of a data center communication method proposed in the fourth embodiment of this application;

[0059] Figure 8 This is a flowchart of a data center communication method proposed in the fifth embodiment of this application;

[0060] Figure 9 This is a schematic diagram of a program unit for a data center communication device according to the sixth embodiment of this application;

[0061] Figure 10 This is a schematic diagram of the hardware architecture of a transmission device proposed in the seventh embodiment of this application. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0063] It should be noted that the descriptions involving "first," "second," etc., in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0064] Example 1

[0065] Please see Figure 1 , Figure 1This is an architecture diagram of a data center communication system proposed in the first embodiment of this application. The data center communication system includes, but is not limited to, at least one first module 1 and at least one second module 2. The first module 1 includes one or more first transmission devices 10, one or more first core switches 12 (generally multiple, also referred to as first terminal switches), and one or more first aggregation switches 14 (generally two, serving as backups for each other). The second module 2 includes one or more second transmission devices 20 (generally one) and one or more second core switches 22 (generally multiple, also referred to as second terminal switches).

[0066] The first module 1 and the second module 2 are equipment in different areas of the data center, such as different buildings or computer rooms.

[0067] It is worth noting that the data center may also include at least one third module 3, which includes one or more third transmission devices 30, one or more third core switches 32 (generally multiple, also referred to as third end switches), and one or more third aggregation switches 34 (generally two, serving as backups for each other). Both the first module 1 and the third module 3 communicate with the second module 2. To improve reliability, the switches in the first module 1, the second module 2, and the third module 3 can be fully interconnected (fullmesh). Fullmesh is a network connection method where all nodes are directly connected.

[0068] like Figure 2 The diagram shown illustrates a communication link between data center modules in a prior art solution. Figure 2 In this architecture, modules A and B communicate with module C. Modules A and B each contain two core switches, while module C contains four core switches. To achieve high reliability and improve link resource utilization, the core switches of modules A and B are networked using a clustered or stacked configuration. When modules A and C, and modules B and C interconnect, link aggregation (LAG) is used. Link aggregation is a technique that bundles multiple physical links together into a single logical link, thereby increasing link bandwidth. Furthermore, each link uses a direct fiber optic connection, requiring a total of 128 fiber pairs.

[0069] In this approach, when some fiber optic links fail, the available bandwidth inevitably decreases, and service can only be restored by repairing or replacing the fiber optic links; self-healing is not possible. Fiber optic cables between different modules pass through numerous hops such as optical distribution frames (ODFs), resulting in poor line quality. The switch side needs to adapt the optical modules based on the fiber distance and quality. Furthermore, the line quality of the fiber optic cables can only be monitored through changes in optical power at the switch ports, limiting monitoring methods.

[0070] Furthermore, due to technological limitations, the maximum speed of switch optical modules is currently 400G, and the maximum transmission capacity per fiber core is also 400G. This limited transmission capacity per fiber core prevents the full utilization of optical fibers. Interconnecting across modules consumes a large number of pigtails (128 pairs), consuming significant ODF resources and equipment room space. Additionally, cross-module interconnection expansion involves multiple cabling points, both across and within modules, as well as switch data configuration and debugging, typically taking two to three days.

[0071] Therefore, the embodiments of this application aim to improve the reliability of large-volume data transmission between different modules of a data center, namely: through technical means, to improve fiber optic utilization, reduce fiber optic occupancy, achieve self-healing, and enable rapid business expansion. The embodiments of this application no longer use direct fiber optic connections, but instead employ transmission equipment to carry the data, meeting the needs of large-volume communication and improving fiber optic link utilization.

[0072] The transmission equipment includes an optical layer and an electrical layer. The optical layer is mainly used for optical signal amplification, protection (optical multiplex section protection), and optical layer scheduling. The electrical layer is mainly used for converting ordinary optical signals into standard wavelength optical signals and for scheduling electrical layer components. Optical Multiplex Section Protect (OMSP) provides optical fibers and optical amplifiers with different routes to provide 1+1 protection for the optical multiplex section layer of Dense Wavelength Division Multiplexing (DWDM). In this embodiment, combined with the optical layer protection of the transmission equipment, service self-healing and rapid service expansion can be achieved.

[0073] Specifically, the first aggregation switch 14 is used to aggregate the signals sent by each of the first core switches 12 in the first module 1, and send the aggregated signals to the first transmission device 10.

[0074] The first transmission device 10 receives signals from the first aggregation switch 14, converts and amplifies them, and then transmits them to the second transmission device 20 via optical fiber. Specifically, the electrical layer of the first transmission device 10 converts the ordinary optical signal received from the first aggregation switch 14 into a standard wavelength optical signal; the optical layer amplifies the converted optical signal using an optical amplifier, protects the optical signal using an OMSP, and transmits the optical signal to the second transmission device 20 via optical fiber.

[0075] The second transmission device 20 is used to receive signals transmitted by the first transmission device 10 via optical fiber, and to send the received signals to each of the second core switches 22 of the second module 2. Specifically, the optical layer of the second transmission device 20 is used to receive standard wavelength optical signals transmitted by the first transmission device 10 via optical fiber; the electrical layer is used to convert the standard wavelength optical signals into ordinary optical signals and send them to each of the second core switches 22.

[0076] Correspondingly, the second transmission device 20 is also used to receive signals sent by each of the second core switches 22, convert and amplify them, and then transmit them to the first transmission device 10 via optical fiber. Specifically, the electrical layer of the second transmission device 20 is used to convert ordinary optical signals received from the second core switches 22 into standard wavelength optical signals; the optical layer is used to amplify the converted optical signals using an optical amplifier, protect the optical signals using an OMSP, and transmit the optical signals to the first transmission device 10 via optical fiber.

[0077] The first transmission device 10 is further configured to receive signals transmitted by the second transmission device 20 via optical fiber, and to send the received signals to each of the first aggregation switches 14. The optical layer of the first transmission device 10 is configured to receive standard wavelength optical signals transmitted by the second transmission device 20 via optical fiber; the electrical layer is configured to convert the standard wavelength optical signals into ordinary optical signals and send them to each of the aggregation switches 14.

[0078] The first aggregation switch 14 is also used to receive signals transmitted by the first transmission device 10 and send them to each of the first core switches 12.

[0079] Two pairs of optical fibers are included between the first transmission device 10 and the second transmission device 20. One pair is the primary route, and the other pair is the backup route. If the data center also includes the third module 3, which is fully interconnected with the switch in the first module 1, then both the first module 1 and the third module 3 are connected to the second module 2 for communication, thus requiring a total of four pairs of optical fibers.

[0080] The optical amplifiers configured in the first transmission device 10 and the second transmission device 20 typically have a gain of around 20 dB, which can significantly reduce the requirements for fiber quality while improving fiber availability. Furthermore, based on OMSP protection, the first transmission device 10 and the second transmission device 20 can monitor fiber quality in real time through alarms and performance checks.

[0081] like Figures 3A-3B The diagram shown illustrates the switching between a primary route and a backup route according to this application. Under normal circumstances, when transmitting a signal, the first transmission device 10 and the second transmission device 20 simultaneously transmit the signal to both the primary route and the backup route (e.g., ...). Figure 3A (As shown). When receiving signals, the first transmission device 10 and the second transmission device 20 receive signals from the primary route. When the fiber attenuation of the primary route deteriorates or is interrupted, the OMSP protection board switches to the backup route based on the light loss alarm or the difference in optical power between the primary and backup routes, and receives signals from the backup route (e.g., ...). Figure 3B As shown in the diagram, the switching time is approximately 50ms. When the backup route fiber attenuates or fails, it switches back to receive signals from the primary route. The entire switching process is imperceptible to the user. In summary, when a pair of optical fibers fails, OMSP protection can choose to use the other pair of optical fibers to achieve service transmission through a switching action, thus realizing a self-healing function.

[0082] Preferably, the first transmission device 10 is interconnected with each of the first aggregation switches 14, the first aggregation switch 14 is interconnected with each of the first core switches 12, and the second transmission device 20 is interconnected with each of the second core switches 22 using a fullmesh networking method.

[0083] If the data center also includes the third module 3, then each first aggregation switch 14 is interconnected with all first core switches 12 and all third core switches 32 using a full-mesh network. Each third aggregation switch 34 is interconnected with all first core switches 12 and all third core switches 32 using a full-mesh network. The first transmission device 10 is interconnected with all first aggregation switches 14 and all third aggregation switches 34 using a full-mesh network. The third transmission device 30 is interconnected with all first aggregation switches 14 and all third aggregation switches 34 using a full-mesh network. Furthermore, the second module 2 includes two second transmission devices 20, which are interconnected with the first transmission device 10 of the first module 1 and the third transmission device 30 of the third module 3 via two pairs of optical fibers. That is, one second transmission device 20 is interconnected with the first transmission device 10 via two pairs of optical fibers, and the other second transmission device 20 is interconnected with the third transmission device 30 via two pairs of optical fibers.

[0084] In one optional embodiment, the uplink bandwidth / downlink bandwidth of the data center module can be set to >1, reserving some margin for the uplink bandwidth. For example, the uplink bandwidth can be configured as 6T and the downlink bandwidth as 4.8T. Then, when the cross-module service expansion bandwidth is less than or equal to 1.2T, only the downlink portion needs to be cabled within the module, and the switch data configuration and debugging can be performed. The overall expansion cycle can be effectively shortened to 2-3 hours.

[0085] like Figure 4 The diagram shown is a schematic representation of a communication link between data center modules according to this application. Figure 4 The specific network topology is as follows:

[0086] (1) A transmission device is configured for each of the following: from module A to module C and from module B to module C.

[0087] (2) The transmission equipment is configured with 40 channels in the electrical layer, with a single wave rate of 400G and a design capacity of 1.6T.

[0088] (3) The optical layer of the transmission equipment is configured with OMSP protection, and two pairs of fiber cores are occupied between every two transmission equipment, for a total of four pairs of fiber cores.

[0089] (4) The core switch (end switch) of module C and the transmission equipment adopt fullmesh networking.

[0090] (5) Module A is configured with two aggregation switches. It adopts fullmesh networking with the transmission equipment of (Module A and Module B) and fullmesh networking with the core switches (end switches) of (Module A and Module B).

[0091] (6) Module B is configured with two aggregation switches. It adopts fullmesh networking with the transmission equipment (of Module A and Module B) and fullmesh networking with the core switches (end switches) (of Module A and Module B).

[0092] (7) The aggregation switches of modules A and B are configured with 100G uplink and interface with the transmission equipment. The downlink is configured with 40G and interface with the core switch (end switch). The core switch (end switch) of module C is configured with 100G and interface with the transmission equipment.

[0093] (8) The switches are directly configured with the Border Gateway Protocol (BGP) to perform load balancing forwarding of multiple links and multiple routes using Equal-Cost Multiple Path (ECMP). ECMP means that there are multiple equal-cost links to the same destination, and the traffic is evenly distributed on these equal-cost links without considering the difference in link bandwidth.

[0094] use Figure 4 After implementing the new networking scheme for signal transmission between different modules in the data center, a single optical fiber can carry a bandwidth of up to 1.6T, significantly improving bandwidth utilization. The number of interconnecting optical fibers across modules has been reduced from 128 pairs to 4 pairs.

[0095] Example 2

[0096] like Figure 5 The diagram shown is a flowchart of a data center communication method according to a second embodiment of this application. It should be understood that the flowchart in this method embodiment is not intended to limit the order of execution steps. Steps in the flowchart can be added to or removed as needed.

[0097] The data center includes at least one first module and at least one second module. The first module includes one or more first transmission devices, a first core switch, and a first aggregation switch. The second module includes one or more second transmission devices and a second core switch. The first module and the second module represent different areas of the data center, such as equipment in different buildings or server rooms. Notably, the data center may also include at least one third module, which includes one or more third transmission devices, a third core switch, and a third aggregation switch. Both the first module and the third module are connected to the second module for communication. To improve reliability, the switches in the first module and the third module can be fully interconnected.

[0098] The method is illustrated below using the process of transmitting signals from the first module to the second module as an example. The method includes the following steps:

[0099] S200, the first aggregation switch of the first module aggregates the signals sent by each first core switch and sends the aggregated signals to the first transmission device.

[0100] In the first module, the first transmission device is interconnected with each of the first aggregation switches, and the first aggregation switches are interconnected with each of the first core switches using a full-mesh networking method. If the data center also includes the third module, then each of the first aggregation switches is interconnected with all the first core switches of the first module and all the third core switches of the third module using a full-mesh networking method, and the first transmission device is interconnected with all the first aggregation switches of the first module and all the third aggregation switches of the third module using a full-mesh networking method. Each first aggregation switch aggregates signals sent by all the first core switches and all the third core switches connected to it, and forwards the aggregated signals to the connected first transmission device (and, if there is a third module, also to the third transmission device).

[0101] S202, the first transmission device receives a signal from the first aggregation switch, converts and amplifies the signal, and then transmits it to the second transmission device through optical fiber.

[0102] Both the first and second transmission devices include an optical layer and an electrical layer, with the optical layer configured with OMSP protection. The electrical layer in the first transmission device converts the ordinary optical signal received from the first aggregation switch into a standard wavelength optical signal. The optical layer amplifies the converted optical signal using an optical amplifier, and then transmits the amplified optical signal to the second transmission device via optical fiber. The optical amplifier gain is typically around 20 dB, which significantly reduces the requirements for fiber quality while improving fiber availability.

[0103] The first module and the second module (the first transmission device and the second transmission device) are connected by two pairs of optical fibers, one pair serving as the primary route and the other as the backup route. If the data center also includes the third module, a total of four pairs of optical fibers are required. The first transmission device simultaneously transmits the amplified optical signal to both the primary and backup routes.

[0104] S204, the second transmission device receives the signal transmitted by the first transmission device through the optical fiber, and sends the received signal to each of the second core switches.

[0105] In this system, the optical layer of the second transmission device receives standard wavelength optical signals transmitted by the first transmission device via a (primary route) optical fiber. The electrical layer converts the standard wavelength optical signals into ordinary optical signals and sends them to each of the second core switches. The second transmission device is interconnected with each of the second core switches using a full-mesh networking method. The second transmission device then sends the converted optical signals to all connected second core switches.

[0106] In one optional embodiment, the uplink bandwidth / downlink bandwidth of the data center module can be set to >1, reserving some margin for the uplink bandwidth. For example, the uplink bandwidth can be configured as 6T and the downlink bandwidth as 4.8T. Then, when the cross-module service expansion bandwidth is less than or equal to 1.2T, only the downlink portion needs to be cabled within the module, and the switch data configuration and debugging can be performed. The overall expansion cycle can be effectively shortened to 2-3 hours.

[0107] Correspondingly, the process of transmitting signals from the second module to the first module is the reverse of the above process, and will not be described again here.

[0108] The data center communication method proposed in this embodiment abandons the conventional interconnection schemes of different data center modules in the industry. Instead of using direct fiber optic connections, it employs transmission equipment for carrying, meeting the needs of large-volume communication, improving the utilization rate of fiber optic links, and reducing fiber optic occupancy. Furthermore, by setting the ratio of uplink bandwidth to downlink bandwidth of the data center modules, a margin is reserved in the uplink bandwidth. When the bandwidth for cross-module service expansion is small, only the downlink portion needs to be cabled and debugged within the module, enabling rapid service expansion.

[0109] Example 3

[0110] like Figure 6 The diagram shown is a flowchart of a data center communication method according to a third embodiment of this application. In this third embodiment, the data center communication method, based on the second embodiment described above, further includes step S306. It is understood that the flowchart in this method embodiment is not intended to limit the order of execution steps. Depending on the needs, some steps in the flowchart can be added to or removed.

[0111] The method includes the following steps:

[0112] S300, the first aggregation switch of the first module aggregates the signals sent by each first core switch and sends the aggregated signals to the first transmission device.

[0113] In the first module, the first transmission device is interconnected with each of the first aggregation switches, and the first aggregation switches are interconnected with each of the first core switches using a full-mesh networking method. If the data center also includes the third module, then each of the first aggregation switches is interconnected with all the first core switches of the first module and all the third core switches of the third module using a full-mesh networking method, and the first transmission device is interconnected with all the first aggregation switches of the first module and all the third aggregation switches of the third module using a full-mesh networking method. Each first aggregation switch aggregates signals sent by all the first core switches and all the third core switches connected to it, and forwards the aggregated signals to the connected first transmission device (and, if there is a third module, also to the third transmission device).

[0114] S302, the first transmission device receives a signal from the first aggregation switch, converts and amplifies the signal, and then transmits it to the second transmission device through optical fiber.

[0115] Both the first and second transmission devices include an optical layer and an electrical layer, with the optical layer configured with OMSP protection. The electrical layer in the first transmission device converts the ordinary optical signal received from the first aggregation switch into a standard wavelength optical signal. The optical layer amplifies the converted optical signal using an optical amplifier, and then transmits the amplified optical signal to the second transmission device via optical fiber. The optical amplifier gain is typically around 20 dB, which significantly reduces the requirements for fiber quality while improving fiber availability.

[0116] The first module and the second module (the first transmission device and the second transmission device) are connected by two pairs of optical fibers, one pair serving as the primary route and the other as the backup route. If the data center also includes the third module, a total of four pairs of optical fibers are required. The first transmission device simultaneously transmits the amplified optical signal to both the primary and backup routes.

[0117] S304, the second transmission device receives the signal transmitted by the first transmission device through the optical fiber, and sends the received signal to each of the second core switches.

[0118] In this system, the optical layer of the second transmission device receives standard wavelength optical signals transmitted by the first transmission device via a (primary route) optical fiber. The electrical layer converts the standard wavelength optical signals into ordinary optical signals and sends them to each of the second core switches. The second transmission device is interconnected with each of the second core switches using a full-mesh networking method. The second transmission device then sends the converted optical signals to all connected second core switches.

[0119] If the data center further includes a third module, then the second module includes two second transmission devices, which are interconnected with the first transmission device of the first module and the third transmission device of the third module via two pairs of optical fibers.

[0120] S306, the second transmission device monitors the status of the primary route and the backup route, and if a problem is detected in the primary route, switches to the backup route to receive the signal.

[0121] When the primary route fiber experiences attenuation degradation or interruption, the OMSP protection board switches to the backup route based on optical loss alarms or the difference in optical power between the primary and backup routes. The switchover time is approximately 50ms. When the backup route fiber experiences attenuation degradation or interruption, it switches back to receiving signals from the primary route. The entire switching process is imperceptible to the user. In summary, when a pair of optical fibers fails, the OMSP protection of the second transmission equipment's optical layer can choose to switch over and utilize the other pair of optical fibers to achieve service transmission, thus realizing a self-healing function.

[0122] The data center communication method proposed in this embodiment abandons the conventional interconnection schemes of different modules in data centers and no longer uses direct fiber optic connections. Instead, it uses transmission equipment for transmission, meeting the needs of large-volume communication, improving the utilization rate of fiber optic links, and reducing fiber optic occupancy. Furthermore, with the OMSP protection of the optical layer of the transmission equipment, it can automatically monitor the quality of the fiber optic cable in real time. In case of problems, it can switch to another pair of fibers for signal transmission, achieving service self-healing.

[0123] Example 4

[0124] like Figure 7 The diagram shown is a flowchart of a data center communication method according to the fourth embodiment of this application. It is understood that the flowchart in this method embodiment is not intended to limit the order of execution steps. As needed, some steps in the flowchart can be added to or removed. The method will now be described using the transmission device (first transmission device) as the execution subject.

[0125] The method includes the following steps:

[0126] S400, Receive a first signal from the aggregation switch of the current module, wherein the first signal is a signal sent by each core switch of the current module aggregated by the aggregation switch.

[0127] In this embodiment, the data center includes at least one current module (first module) and at least one other module (second module). The first module includes one or more transmission devices, a core switch, and an aggregation switch, while the second module includes one or more transmission devices and a core switch. The first module and the second module represent different areas of the data center, such as different buildings or server rooms. Notably, the data center may also include at least one third module, and both the first module and the third module are connected to the second module for communication to improve reliability.

[0128] In the current module (first module), the transmission devices are interconnected with each aggregation switch, and the aggregation switches are interconnected with each core switch using a full-mesh networking method. If the data center also includes a third module, then each aggregation switch is interconnected with all the core switches of the first module and all the core switches of the third module using a full-mesh networking method, and each transmission device is interconnected with all the aggregation switches of the first module and all the aggregation switches of the third module using a full-mesh networking method. Each aggregation switch aggregates signals sent by all the core switches it is connected to and forwards the aggregated signals to all the connected transmission devices.

[0129] S402, after converting and amplifying the first signal, it is transmitted to the transmission device of another module via optical fiber.

[0130] The transmission device includes an optical layer and an electrical layer, with the optical layer configured with OMSP protection. The electrical layer of the transmission device converts ordinary optical signals received from the aggregation switch into standard wavelength optical signals. The optical layer of the transmission device amplifies the converted optical signals using an optical amplifier and then transmits the amplified optical signals through optical fiber to the second transmission device. The optical amplifier gain is typically around 20 dB, which significantly reduces the requirements for fiber quality while improving fiber availability.

[0131] The current module (first module) and the other module (second module) are connected by two pairs of optical fibers, one pair serving as the primary route and the other pair as the backup route. The transmission device simultaneously transmits the amplified first signal to both the primary route and the backup route.

[0132] S404, receive the second signal transmitted by the transmission device of the other module through the optical fiber.

[0133] The optical layer in the transmission device receives the standard wavelength optical signal (second signal) transmitted by the transmission device of the other module via the (primary route) optical fiber.

[0134] S406, the second signal is sent to each of the aggregation switches, and then transmitted to each of the core switches of the current module.

[0135] The electrical layer in the transmission device converts standard wavelength optical signals into ordinary optical signals and sends them to each of the aggregation switches, which then send them to all the core switches connected to it.

[0136] The data center communication method proposed in this embodiment abandons the conventional interconnection scheme of different modules in data centers in the industry. Instead of using direct fiber optic connection, it uses transmission equipment to carry the data, which meets the needs of large-volume communication, improves the utilization rate of fiber optic links, and reduces fiber optic occupancy.

[0137] Example 5

[0138] like Figure 8 The diagram shown is a flowchart of a data center communication method according to the fifth embodiment of this application. In the fifth embodiment, the data center communication method, based on the fourth embodiment described above, further includes step S508. It is understood that the flowchart in this method embodiment is not intended to limit the order of execution steps. As needed, some steps in the flowchart can be added to or removed.

[0139] The method includes the following steps:

[0140] S500, receive a first signal from the aggregation switch of the current module, the first signal being the signals sent by each core switch of the current module aggregated by the aggregation switch.

[0141] In this embodiment, the data center includes at least one current module (first module) and at least one other module (second module). The first module includes one or more transmission devices, a core switch, and an aggregation switch, while the second module includes one or more transmission devices and a core switch. The first module and the second module represent different areas of the data center, such as different buildings or server rooms. Notably, the data center may also include at least one third module, and both the first module and the third module are connected to the second module for communication to improve reliability.

[0142] In the current module (first module), the transmission devices are interconnected with each aggregation switch, and the aggregation switches are interconnected with each core switch using a full-mesh networking method. If the data center also includes a third module, then each aggregation switch is interconnected with all the core switches of the first module and all the core switches of the third module using a full-mesh networking method, and each transmission device is interconnected with all the aggregation switches of the first module and all the aggregation switches of the third module using a full-mesh networking method. Each aggregation switch aggregates signals sent by all the core switches it is connected to and forwards the aggregated signals to all the connected transmission devices.

[0143] S502, after converting and amplifying the first signal, it is transmitted to the transmission device of another module via optical fiber.

[0144] The transmission device includes an optical layer and an electrical layer, with the optical layer configured with OMSP protection. The electrical layer of the transmission device converts ordinary optical signals received from the aggregation switch into standard wavelength optical signals. The optical layer of the transmission device amplifies the converted optical signals using an optical amplifier and then transmits the amplified optical signals through optical fiber to the transmission device of the other module. The optical amplifier gain is typically around 20 dB, which significantly reduces the requirements for fiber quality while improving fiber availability.

[0145] The current module (first module) and the other module (second module) are connected by two pairs of optical fibers, one pair serving as the primary route and the other pair as the backup route. The transmission device simultaneously transmits the amplified first signal to both the primary route and the backup route.

[0146] S504, receive the second signal transmitted by the transmission device of the other module through the optical fiber.

[0147] The optical layer in the transmission device receives the standard wavelength optical signal (second signal) transmitted by the transmission device of the other module via the (primary route) optical fiber.

[0148] S506, the second signal is sent to each of the aggregation switches, and then transmitted to each of the core switches of the current module.

[0149] The electrical layer in the transmission device converts standard wavelength optical signals into ordinary optical signals and sends them to each of the aggregation switches, which then send them to all the core switches connected to it.

[0150] S508, monitor the status of the primary route and the backup route, and if a problem is detected in the primary route, switch to the backup route to receive the second signal.

[0151] When the primary route fiber suffers attenuation degradation or interruption, the OMSP protection board in the transmission equipment switches to the backup route based on optical loss alarms or the difference in optical power between the primary and backup routes. The switching time is approximately 50ms. When the backup route fiber suffers attenuation degradation or interruption, it switches back to receiving signals from the primary route. The entire switching process is imperceptible to the user. In summary, when a pair of optical fibers fails, the OMSP protection of the optical layer of the transmission equipment can choose to use another pair of optical fibers to achieve service transmission through a switching action, thus realizing a self-healing function.

[0152] The data center communication method proposed in this embodiment abandons the conventional interconnection schemes of different modules in data centers and no longer uses direct fiber optic connections. Instead, it uses transmission equipment for transmission, meeting the needs of large-volume communication, improving the utilization rate of fiber optic links, and reducing fiber optic occupancy. Furthermore, with the OMSP protection of the optical layer of the transmission equipment, it can automatically monitor the quality of the fiber optic cable in real time. In case of problems, it can switch to another pair of fibers for signal transmission, achieving service self-healing.

[0153] Example 6

[0154] like Figure 9 The diagram shown is a schematic representation of a program unit of a data center communication device 60 according to a sixth embodiment of this application. The data center communication device 60 can be divided into one or more program units, which are stored in a storage medium and executed by one or more processors to complete the embodiments of this application. The program unit referred to in the embodiments of this application refers to a series of computer program instruction segments capable of performing a specific function. The following description will specifically introduce the functions of each program unit in this embodiment.

[0155] In this embodiment, the data center communication device 60 includes:

[0156] The receiving unit 600 is used to receive a first signal from the aggregation switch of the current module, wherein the first signal is a signal sent by each core switch of the current module aggregated by the aggregation switch.

[0157] The transmission unit 602 is used to convert and amplify the first signal and then transmit it through an optical fiber to the transmission device of another module.

[0158] The receiving unit 600 is also used to receive a second signal transmitted by the transmission device of the other module through the optical fiber.

[0159] The transmission unit 602 is also used to send the second signal to each of the aggregation switches, and then transmit it to each of the core switches of the current module.

[0160] The current module and the other module are connected by two pairs of optical fibers, one pair of which serves as the primary route and the other pair of which serves as the backup route.

[0161] The specific functions of each of the above units are described in the preceding embodiments and will not be repeated here.

[0162] The data center communication device proposed in this embodiment no longer uses direct fiber optic connection, but instead uses transmission equipment to carry signal transmission between different modules of the data center, meeting the needs of large data volume communication, improving the utilization rate of fiber optic links, and reducing fiber optic occupancy.

[0163] Example 7

[0164] like Figure 10 The diagram shown illustrates the hardware architecture of a transmission device 90 according to the seventh embodiment of this application. In this embodiment, the transmission device 90 may include, but is not limited to, a memory 91, a processor 92, and a network interface 93, which are interconnected via a system bus. It should be noted that... Figure 10 Only the transmission device 90 with components 91-93 is shown; however, it should be understood that it is not required to implement all the components shown, and more or fewer components may be implemented instead. For example, other components of the optical and electrical layers of the transmission device 90 are not described here.

[0165] The memory 91 includes at least one type of readable storage medium, including flash memory, hard disk, multimedia card, card-type memory (e.g., SD or DX memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, magnetic disk, optical disk, etc. In some embodiments, the memory 91 may be an internal storage unit of the transmission device 90, such as the memory of the transmission device 90. In this embodiment, the memory 91 is typically used to store various program codes installed on the transmission device 90, such as the program code of the data center communication device in the embodiment. In addition, the memory 91 can also be used to temporarily store various types of data that have been output or will be output.

[0166] In some embodiments, the processor 92 may be a central processing unit (CPU), controller, microcontroller, microprocessor, or other data processing chip. The processor 92 is typically used to control the overall operation of the transmission device 90. In this embodiment, the processor 92 is used to run program code stored in the memory 91 or to process data.

[0167] The network interface 93 may include a wireless network interface or a wired network interface, which is typically used to establish a communication connection between the transmission device 90 and other electronic devices.

[0168] In this embodiment, the data center communication device stored in the memory 91 can be further divided into one or more program modules and executed by one or more processors (processor 92 in this embodiment) to complete this application.

[0169] Example 8

[0170] This application also provides another embodiment, namely, providing a computer-readable storage medium storing a computer program that can be executed by at least one processor to cause the at least one processor to perform the steps of the data center communication method described above.

[0171] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0172] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0173] Obviously, those skilled in the art should understand that the modules or steps of the embodiments of this application described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby storing them in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented here, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the embodiments of this application are not limited to any particular combination of hardware and software.

[0174] The above are merely preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structural or procedural transformations made using the description and drawings of the present application, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present application.

Claims

1. A data center communication system, characterized in that, The system includes at least one first module and at least one second module. The first module includes one or more first transmission devices, a first core switch and a first aggregation switch. The second module includes one or more second transmission devices and a second core switch. The first aggregation switch is used to aggregate the signals sent by each of the first core switches and send the aggregated signals to the first transmission device; The first transmission device is used to receive signals from the first aggregation switch, convert and amplify the signals, and then transmit them to the second transmission device via optical fiber; The second transmission device is used to receive signals transmitted by the first transmission device through the optical fiber, and to send the received signals to each of the second core switches; The first module and the second module are connected by two pairs of optical fibers, one pair of which serves as the primary route and the other pair of which serves as the backup route.

2. The data center communication system according to claim 1, characterized in that, Both the first transmission device and the second transmission device include an optical layer and an electrical layer, and the optical layer is configured with optical multiplexer protection.

3. The data center communication system according to claim 2, characterized in that: The electrical layer in the first transmission device is used to convert ordinary optical signals received from the first aggregation switch into optical signals of standard wavelengths. The optical layer in the first transmission device is used to amplify the converted optical signal through an optical amplifier, and then transmit the amplified optical signal to the second transmission device through an optical fiber.

4. The data center communication system according to any one of claims 1 to 3, characterized in that: The first transmission device simultaneously transmits the signal to both the primary route and the backup route for transmission to the second transmission device; The second transmission device receives the signal transmitted by the first transmission device from the primary route.

5. The data center communication system according to claim 4, characterized in that, The second transmission device is also used to monitor the status of the primary route and the backup route, and if a problem is detected in the primary route, switch to the backup route to receive the signal.

6. The data center communication system according to any one of claims 1 to 5, characterized in that, The first transmission device and each of the first aggregation switches, the first aggregation switches and each of the first core switches, and the second transmission device and each of the second core switches all adopt a fully interconnected networking method.

7. The data center communication system according to claim 6, characterized in that, The system further includes at least one third module, which includes one or more third transmission devices, a third core switch, and a third aggregation switch. Each first aggregation switch is fully interconnected with all first core switches and all third core switches. Each third aggregation switch is fully interconnected with all first core switches and all third core switches. The first transmission device is fully interconnected with all first aggregation switches and all third aggregation switches. The third transmission device is fully interconnected with all first aggregation switches and all third aggregation switches.

8. The data center communication system according to claim 7, characterized in that, The second module includes two second transmission devices, one of which is interconnected with the first transmission device of the first module via two pairs of optical fibers, and the other second transmission device is interconnected with the third transmission device of the third module via two pairs of optical fibers.

9. A data center communication method, applied to a data center communication system, characterized in that, The data center communication system includes at least one first module and at least one second module. The first module includes one or more first transmission devices, a first core switch, and a first aggregation switch. The second module includes one or more second transmission devices and a second core switch. The method includes: The first aggregation switch aggregates the signals sent by each of the first core switches and sends the aggregated signals to the first transmission device; The first transmission device receives a signal from the first aggregation switch, converts and amplifies the signal, and then transmits it to the second transmission device via optical fiber; The second transmission device receives the signal transmitted by the first transmission device through the optical fiber and sends the received signal to each of the second core switches; The first module and the second module are connected by two pairs of optical fibers, one pair of which serves as the primary route and the other pair of which serves as the backup route.

10. The data center communication method according to claim 9, characterized in that, The first transmission device receives a signal from the first aggregation switch, converts and amplifies the signal, and then transmits it to the second transmission device via optical fiber, including: The electrical layer in the first transmission device converts the ordinary optical signal received from the first aggregation switch into an optical signal of standard wavelength. The optical layer in the first transmission device amplifies the converted optical signal through an optical amplifier, and then transmits the amplified optical signal to the second transmission device through an optical fiber.

11. The data center communication method according to claim 9 or 10, characterized in that, The first transmission device transmits the signal to the second transmission device via optical fiber by simultaneously transmitting the signal to the primary route and the backup route. The second transmission device receiving the signal transmitted by the first transmission device through the optical fiber includes: receiving the signal transmitted by the first transmission device from the primary route.

12. The data center communication method according to claim 11, characterized in that, The method further includes: The second transmission device monitors the status of the primary route and the backup route, and switches to the backup route to receive the signal if a problem is detected in the primary route.

13. A data center communication method, applied to the transmission equipment of various modules in a data center, characterized in that, The method includes: Receive a first signal from the aggregation switch of the current module, wherein the first signal is a signal sent by each core switch of the current module aggregated by the aggregation switch; The first signal is converted and amplified and then transmitted to the transmission device of another module via optical fiber; Receive the second signal transmitted by the transmission device of the other module through the optical fiber; The second signal is sent to each of the aggregation switches, and then transmitted to each of the core switches of the current module; The current module and the other module are connected by two pairs of optical fibers, one pair of which serves as the primary route and the other pair of which serves as the backup route.

14. The data center communication method according to claim 13, characterized in that, The transmission device that converts and amplifies the first signal and transmits it to another module via optical fiber includes: The electrical layer in the transmission device converts ordinary optical signals received from the aggregation switch into optical signals of standard wavelengths. The optical layer in the transmission device amplifies the converted optical signal through an optical amplifier, and then transmits the amplified optical signal through an optical fiber to the transmission device of the other module.

15. The data center communication method according to claim 13 or 14, characterized in that, The transmission device that transmits the amplified first signal to another module via optical fiber includes: simultaneously transmitting the amplified first signal to the primary route and the backup route; The second signal transmitted by the transmission device receiving the other module through the optical fiber includes: receiving the second signal from the primary route.

16. The data center communication method according to claim 15, characterized in that, The method further includes: Monitor the status of the primary route and the backup route, and if a problem is detected with the primary route, switch to the backup route to receive the second signal.

17. A data center communication device, applied in the transmission equipment of various modules of a data center, characterized in that, The device includes: A receiving unit is configured to receive a first signal from the aggregation switch of the current module, wherein the first signal is a signal sent by each core switch of the current module aggregated by the aggregation switch; A transmission unit is used to convert and amplify the first signal and then transmit it to another module via optical fiber. The receiving unit is also used to receive a second signal transmitted by the transmission device of the other module through the optical fiber; The transmission unit is also used to send the second signal to each of the aggregation switches, and then transmit it to each of the core switches of the current module; The current module and the other module are connected by two pairs of optical fibers, one pair of which serves as the primary route and the other pair of which serves as the backup route.

18. A transmission device, characterized in that, The transmission device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the data center communication method as described in any one of claims 13 to 16.

19. 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 data center communication method as described in any one of claims 9 to 16.

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