A data center multi-core fiber cabling system

Abstract

The application belongs to the technical field of optical communication, and discloses a data center multi-core optical fiber cabling system. In the application, the access switch and the aggregation switch are connected through multi-core optical fiber cabling, and the aggregation switch and the core switch are connected through multi-core optical fiber cabling. The application uses multi-core optical fiber to replace the single-core optical fiber used in the prior art to realize the connection between the switches at each level. Compared with the single-core optical fiber parallel transmission connection scheme, the application takes advantage of the multi-parallel physical channel of the multi-core optical fiber, realizes high-density and low-cost connection of the data center, and improves the number of physical channels to multiple times of the original number under the condition of the same cabling space, greatly improves the cabling density, reduces the occupied space in the cabinet under the condition of the same physical transmission channel, reduces the volume of the optical fiber cable, greatly reduces the number and cost of the connectors, saves the cabling cost and pipeline resources, and reduces energy consumption.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of optical communication, and more particularly relates to a multi-core optical fiber cabling system for data center. BACKGROUND

[0002] The capacity of data center switches doubles every two years, and the rapid development of capacity brings great pressure to high-density optical interconnection. At present, the data center connection cabling mainly adopts single-core optical fiber, and the transmission scene less than 100m uses multi-mode optical fiber connection, and the transmission scene above 100m uses single-mode optical fiber connection. The transmission scheme includes parallel transmission and wavelength division multiplexing scheme. Parallel transmission adopts the way of parallel transmission of multiple optical fibers to realize high-speed transmission of a single module, which needs to increase the number of laid optical fibers by several times, consumes a large amount of optical fibers and connectors, occupies a large space, and the cost and energy consumption will also increase obviously, which cannot meet the development needs of high-density, low-cost and easy maintenance of future large data centers. The application of wavelength division multiplexing for transmission needs to consume only two optical fibers of one receiving and one transmitting regardless of the number of channels, and the total amount of optical fibers used is less, but the wavelength division multiplexing scheme needs to increase the wavelength division multiplexer, and the current multi-channel wavelength division multiplexer has high cost and needs to use multiple lasers of different wavelengths, resulting in high comprehensive cost of the wavelength division multiplexing scheme. The rapid growth of global interconnection bandwidth capacity and the large-scale deployment of data centers result in the rapid increase of line density and total length, and the requirement of high optical access density of front and rear panels, so a high-density and low-cost cabling scheme is needed to solve the current data center cabling problem.

[0003] The prior art, such as patent CN211206856U discloses a 16-core MPO / MTP cabling system, the backbone optical cable is 16-core MPO / MTP, and 4 four-core connectors or 2 eight-core connectors or 2 twelve-core connectors are arranged at the branch jumper end to solve the problem of cross connection of the entire link, but the patent is still based on MPO / MTP made of ordinary single-core optical fiber for cabling connection, and does not consider the cabling connection between each level of the data center, so it cannot greatly improve the cabling density. For example, patent CN205428558U discloses a data center cabling cable, which is provided with a sticky tape layer outside the cable core to reduce cost, reduce diameter and weight, but the patent is still based on an optical cable structure designed on the basis of ordinary single-core optical fiber, rather than multi-core optical fiber for space division multiplexing, and does not involve the cabling connection mode of the entire data center, so the gain in cost and density of the data center is small. SUMMARY

[0004] The present application provides a multi-core optical fiber cabling system for data center, which solves the problem of low density and high cost of data center cabling in the prior art.

[0005] The application provides a data center multi-core optical fiber cabling system, comprising: an access switch, a convergence switch and a core switch; the access switch is connected with the convergence switch through multi-core optical fiber cabling, and the convergence switch is connected with the core switch through multi-core optical fiber cabling.

[0006] Preferably, the A-type jumper wire is defined as a jumper wire with multi-core LC connectors at both ends.

[0007] The uplink port optical module of the access switch is connected with a first multi-core fan-in fan-out module box; the multi-core LC interface in the first multi-core fan-in fan-out module box is connected with a first A-type jumper wire; the first A-type jumper wire, a first multi-core LC adapter panel, a multi-core optical fiber cable with multi-core LC connectors at both ends, a second multi-core LC adapter panel, a second A-type jumper wire and a second multi-core fan-in fan-out module box are sequentially connected; and the second multi-core fan-in fan-out module box is connected with the downlink port optical module of the convergence switch.

[0008] Preferably, the uplink port optical module of the convergence switch is connected with a third multi-core fan-in fan-out module box, the multi-core LC interface in the third multi-core fan-in fan-out module box is connected with a third A-type jumper wire; the third A-type jumper wire, a first multi-core LC-multi-core MPO adapter module box, a multi-core optical fiber backbone cable with multi-core MPO connectors at both ends, a second multi-core LC-multi-core MPO adapter module box, a fourth A-type jumper wire and a fourth multi-core fan-in fan-out module box are sequentially connected; and the fourth multi-core fan-in fan-out module box is connected with the downlink port optical module of the core switch.

[0009] Preferably, the optical modules of the access switch, the convergence switch and the core switch all adopt LC interfaces.

[0010] The first multi-core fan-in fan-out module box, the second multi-core fan-in fan-out module box, the third multi-core fan-in fan-out module box and the fourth multi-core fan-in fan-out module box all have N input interfaces and one output interface; the input interfaces are single-core LC interfaces, and the output interface is an N-core LC interface.

[0011] Preferably, the B-type jumper wire is defined as a jumper wire with single-core LC connectors at both ends.

[0012] The uplink port optical module of the access switch is connected with the first multi-core fan-in fan-out module box through a second B-type jumper wire, the second multi-core fan-in fan-out module box is connected with the downlink port optical module of the convergence switch through a third B-type jumper wire, the uplink port optical module of the convergence switch is connected with the third multi-core fan-in fan-out module box through a fourth B-type jumper wire, and the downlink port optical module of the core switch is connected with the fourth multi-core fan-in fan-out module box through a fifth B-type jumper wire.

[0013] Preferably, the optical modules of the access switch, the aggregation switch and the core switch all adopt MPO interfaces.

[0014] The first multi-core fan-in fan-out module box, the second multi-core fan-in fan-out module box, the third multi-core fan-in fan-out module box and the fourth multi-core fan-in fan-out module box all have an input interface and an output interface, the input interface is an N-channel single-core MPO interface, and the output interface is an N-core LC interface.

[0015] Preferably, the C-type jumper wire is defined as a jumper wire with N-channel single-core MPO interfaces at both ends.

[0016] The uplink port optical module of the access switch is connected with the first multi-core fan-in fan-out module box through a first C-type jumper wire, and the second multi-core fan-in fan-out module box is connected with the downlink port optical module of the aggregation switch through a second C-type jumper wire; the uplink port optical module of the aggregation switch is connected with the third multi-core fan-in fan-out module box through a third C-type jumper wire, and the downlink port optical module of the core switch is connected with the fourth multi-core fan-in fan-out module box through a fourth C-type jumper wire.

[0017] Preferably, the first multi-core fan-in fan-out module box is integrated in the uplink port optical module of the access switch, the second multi-core fan-in fan-out module box is integrated in the downlink port optical module of the aggregation switch, the third multi-core fan-in fan-out module box is integrated in the uplink port optical module of the aggregation switch, and the fourth multi-core fan-in fan-out module box is integrated in the downlink port optical module of the core switch.

[0018] Preferably, the multi-core optical fiber cabling system of the data center further comprises a server, and the downlink port optical module of the access switch is connected with the server through a first B-type jumper wire, and the B-type jumper wire is defined as a jumper wire with single-core LC connectors at both ends.

[0019] Preferably, a server cabinet for placing the server is located in the equipment distribution area of the data center, the access switch is located in the server cabinet, an aggregation switch cabinet for placing the aggregation switch is located in the horizontal distribution area of the data center, and a core switch cabinet for placing the core switch is located in the core distribution area of the data center.

[0020] The one or more technical solutions provided in the application have at least the following technical effects or advantages:

[0021] The access switch and the aggregation switch in the multi-core optical fiber cabling system of the data center are connected by multi-core optical fiber cabling, and the aggregation switch and the core switch are connected by multi-core optical fiber cabling. That is, the multi-core optical fiber is used to replace the single-core optical fiber in the prior art to realize the connection between the switches at each level. Compared with the single-core optical fiber parallel transmission connection scheme, the multi-core optical fiber parallel physical channel advantage is exerted, and high-density and low-cost connection of the data center is realized. Compared with the wavelength division multiplexing transmission scheme, the scheme provided by the application does not need to use various lasers of different wavelengths. The multi-core LC connector is also applied to replace the original ordinary MPO connector, so that the use amount of the ordinary MPO connector is greatly reduced, and the cost is greatly reduced. In the multi-core optical fiber backbone cable connection, the single-core optical fiber is replaced by the multi-core optical fiber on the basis of the ordinary MPO connector, so that the high-channel-density backbone cable can be made. The scheme saves the wiring space and has lower overall cost. Compared with the ordinary single-core optical fiber parallel transmission connection scheme, the multi-core optical fiber parallel physical channel advantage is exerted, the same physical transmission channel occupies less space in the cabinet, the optical fiber cable volume is reduced, the connector cost is greatly reduced, the wiring cost and pipeline resources can be saved, and the energy consumption is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a wiring schematic diagram of a multi-core optical fiber cabling system of a data center provided by an embodiment of the application;

[0023] Figure 2 is a schematic diagram of an eight-core fan-in fan-out module box;

[0024] Figure 3 is a schematic diagram of an eight-core LC-eight-core MPO adapter module box;

[0025] Figure 4 is an end face schematic diagram of an eight-core optical fiber. DETAILED DESCRIPTION

[0026] The application provides a multi-core optical fiber cabling system of a data center, comprising: an access switch, an aggregation switch and a core switch; the access switch and the aggregation switch are connected by multi-core optical fiber cabling, and the aggregation switch and the core switch are connected by multi-core optical fiber cabling.

[0027] The present application uses multi-core optical fibers to replace single-core optical fibers used in the prior art to realize the connection between the switches at each level, and compared with the single-core optical fiber parallel transmission connection scheme, the present application takes advantage of the multi-parallel physical channel of multi-core optical fibers, and realizes high-density and low-cost connection of the data center. In the case of the same wiring space, the number of physical channels can be increased to several times the original, and the wiring density is greatly improved; or in the case of the same physical transmission channel, the occupied space in the cabinet is reduced, the volume of the optical fiber cable is reduced, the number and cost of the connectors are greatly reduced, and the wiring cost and pipeline resources can be saved, and the energy consumption is reduced.

[0028] In addition, the data center multi-core optical fiber wiring system can further include a server, and a downlink port optical module of the access switch is connected with the server.

[0029] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings of the specification and specific embodiments.

[0030] Embodiment 1:

[0031] In embodiment 1, the A-type jumper wire is defined as a jumper wire with multi-core LC connectors at both ends, and the B-type jumper wire is defined as a jumper wire with single-core LC connectors at both ends.

[0032] Referring to Figure 1 , the data center multi-core optical fiber wiring system provided by embodiment 1 includes a server 1, an access switch 2, a convergence switch 3 and a core switch 4. A server cabinet for placing the server 1 is located in the equipment distribution area of the data center, the access switch 2 is located in the server cabinet, a convergence switch cabinet for placing the convergence switch 3 is located in the horizontal distribution area of the data center, and a core switch cabinet for placing the core switch 4 is located in the core distribution area of the data center.

[0033] The number of servers 1 placed in the server cabinet is configured according to the size of the data center and the number of users, for example, the number of servers in a high-density server cabinet is 8-12.

[0034] The server 1 is connected with the downlink port optical module of the access switch 2 through the first B-type jumper wire 9a.

[0035] The uplink port optical module of the access switch 2 is connected with the first multi-core fan-in fan-out module box 8a; the multi-core LC interface in the first multi-core fan-in fan-out module box 8a is connected with the first A-type jumper 10a; the first A-type jumper 10a, the first multi-core LC adapter panel 6a, the multi-core fiber optical cable 10b with multi-core LC connectors at both ends, the second multi-core LC adapter panel 6b, the second A-type jumper 10c, the second multi-core fan-in fan-out module box 8b are sequentially connected, and the second multi-core fan-in fan-out module box 8b is connected with the downlink port optical module of the aggregation switch 3.

[0036] The uplink port optical module of the aggregation switch 3 is connected with the third multi-core fan-in fan-out module box 8c, and the multi-core LC interface in the third multi-core fan-in fan-out module box 8c is connected with the third A-type jumper 10d; the third A-type jumper 10d, the first multi-core LC-multi-core MPO adapter module box 7a, the multi-core fiber trunk cable 11 with multi-core MPO connectors at both ends, the second multi-core LC-multi-core MPO adapter module box 7b, the fourth A-type jumper 10e, the fourth multi-core fan-in fan-out module box 8d are sequentially connected, and the fourth multi-core fan-in fan-out module box 8d is connected with the downlink port optical module of the core switch 4.

[0037] Specifically, the first multi-core fan-in fan-out module box 8a is located on the first distribution frame 5a of the server cabinet, the first multi-core LC adapter panel 6a is located on the second distribution frame 5b of the server cabinet, the second multi-core LC adapter panel 6b is located on the third distribution frame 5c of the aggregation switch cabinet, the second multi-core fan-in fan-out module box 8b is located on the fourth distribution frame 5d of the aggregation switch cabinet, the third multi-core fan-in fan-out module box 8c is located on the fifth distribution frame 5e of the aggregation switch cabinet, the first multi-core LC-multi-core MPO adapter module box 7a is located on the sixth distribution frame 5f of the aggregation switch cabinet, the second multi-core LC-multi-core MPO adapter module box 7b is located on the seventh distribution frame 5g of the core switch cabinet, and the fourth multi-core fan-in fan-out module box 8d is located on the eighth distribution frame 5h of the core switch cabinet.

[0038] In embodiment 1, the optical modules of the access switch 2, the aggregation switch 3 and the core switch 4 all adopt LC interfaces.

[0039] All the multi-core fan-in fan-out module boxes in embodiment 1 (including the first multi-core fan-in fan-out module box 8a, the second multi-core fan-in fan-out module box 8b, the third multi-core fan-in fan-out module box 8c and the fourth multi-core fan-in fan-out module box 8d) all have N input interfaces and one output interface, the input interfaces are single-core LC interfaces, and the output interface is an N-core LC interface (i.e. a multi-core LC interface).

[0040] The uplink port optical module of the access switch 2 is connected with the first multi-core fan-in fan-out module box 8a through the second B-type jumper 9b, the second multi-core fan-in fan-out module box 8b is connected with the downlink port optical module of the aggregation switch 3 through the third B-type jumper 9c, the uplink port optical module of the aggregation switch 3 is connected with the third multi-core fan-in fan-out module box 8c through the fourth B-type jumper 9d, and the downlink port optical module of the core switch 4 is connected with the fourth multi-core fan-in fan-out module box 8d through the fifth B-type jumper 9e.

[0041] That is, the server 1 and the access switch 2 are connected through the jumper with single-core LC connectors at both ends, realizing the access connection of the server 1. The access switch cabinet and the aggregation switch cabinet are connected through the multi-core optical fiber cable 10b with multi-core LC connectors at both ends. The uplink port optical module of the access switch 2 is connected with the multi-core fan-in fan-out module, converted into the multi-core LC interface, connected to the local cabinet distribution frame through the multi-core LC connector, connected to the multi-core optical fiber cable through a multi-core LC adapter panel located in the aggregation switch cabinet, then connected with the multi-core fan-in fan-out module through the multi-core LC connector, converted into the single-core LC interface, and then connected with the downlink port optical module of the aggregation switch 3, realizing the connection between the access switch 2 and the aggregation switch 3. The aggregation switch cabinet and the core switch cabinet are connected through two multi-core LC-multi-core MPO adapter module boxes and then through the multi-core optical fiber backbone cable 11 with multi-core MPO connectors at both ends. The uplink port of the aggregation switch 3 is connected with the single-core LC optical module, connected with the multi-core fan-in fan-out module through the single-core LC connector, converted into the multi-core LC interface, connected to the local cabinet distribution frame and connected with a multi-core LC-multi-core MPO adapter module box, converted into the multi-core MPO interface through the adapter module box, then connected with the distribution frame of the core switch cabinet through the multi-core optical fiber cable, connected with the multi-core fan-in fan-out module through a multi-core LC-multi-core MPO adapter module box after conversion into the multi-core LC interface, and then connected with the downlink port optical module of the core switch 4 through the single-core LC connector, realizing the connection between the aggregation switch 3 and the core switch 4.

[0042] The multi-core optical fiber used in embodiment 1 can use a multi-core optical fiber with a 125um common glass cladding diameter and a 250um coating layer diameter, and the core layer can transmit a single-mode signal. The single-core LC connector can provide an insertion loss less than or equal to 0.3dB, the multi-core LC connector can provide an insertion loss less than or equal to 0.15dB, the multi-core MPO can provide an insertion loss less than or equal to 0.5dB, and the multi-core fan-in fan-out module box can provide an insertion loss less than or equal to 1dB.

[0043] For example, the multi-core optical fiber is specifically an eight-core optical fiber, the multi-core fan-in fan-out module box is specifically an eight-core fan-in fan-out module box, and the multi-core LC-multi-core MPO adapter module box is specifically an eight-core LC-eight-core MPO adapter module box. Referring to Figure 2 The eight-core fan-in fan-out module box has 8 input interfaces and 1 output interface, the input interfaces are single-core LC interfaces, the output interface is an eight-core LC interface, the insertion loss is 1.5 dB, and preferably, the insertion loss is 1 dB. Referring to Figure 3 The eight-core LC-eight-core MPO adapter module box has 8 eight-core LC interfaces and one eight-core MPO interface, and the insertion loss is 0.5 dB. Referring to Figure 4 The eight-core optical fiber has a diameter of 125 / 250 μm.

[0044] Embodiment 1 not only realizes high-density and low-cost connection of the data center, but also replaces the original MPO interface of the optical module with an LC interface, which can further reduce the cost.

[0045] Embodiment 2:

[0046] The difference between Embodiment 2 and Embodiment 1 is that the optical module of each level switch is not connected to the multi-core fan-in fan-out module box through the B-type jumper, but the multi-core fan-in fan-out module box is integrated in the optical module of the switch. That is, the optical module in the cabinet is directly connected to the multi-core LC adapter panel and the multi-core LC-multi-core MPO adapter module box through the jumper with multi-core LC connectors at both ends.

[0047] Specifically, the first multi-core fan-in fan-out module box is integrated in the uplink port optical module of the access switch, the second multi-core fan-in fan-out module box is integrated in the downlink port optical module of the aggregation switch, the third multi-core fan-in fan-out module box is integrated in the uplink port optical module of the aggregation switch, and the fourth multi-core fan-in fan-out module box is integrated in the downlink port optical module of the core switch.

[0048] Embodiment 2 has higher integration and can further save wiring space.

[0049] Embodiment 3:

[0050] The C-type jumper is defined as a jumper with N-channel single-core MPO interfaces at both ends.

[0051] The difference between Embodiment 3 and Embodiment 1 is that the optical module of the access switch, the aggregation switch and the core switch all adopt MPO interfaces.

[0052] All the multi-core fan-in fan-out module boxes in embodiment 3 (including the first multi-core fan-in fan-out module box, the second multi-core fan-in fan-out module box, the third multi-core fan-in fan-out module box, and the fourth multi-core fan-in fan-out module box) have one input interface and one output interface, the input interface is an N-channel single-core MPO interface, and the output interface is an N-core LC interface (i.e., a multi-core LC interface).

[0053] That is, embodiment 3 applies a jumper with two N-channel single-core MPO interfaces to connect the MPO interface optical module on each level switch with the input interface of the multi-core fan-in fan-out module box.

[0054] The uplink port optical module of the access switch is connected with the first multi-core fan-in fan-out module box through a first C-class jumper, the downlink port optical module of the aggregation switch is connected with the second multi-core fan-in fan-out module box through a second C-class jumper, the uplink port optical module of the aggregation switch is connected with the third multi-core fan-in fan-out module box through a third C-class jumper, and the downlink port optical module of the core switch is connected with the fourth multi-core fan-in fan-out module box through a fourth C-class jumper.

[0055] Among them, the single-core MPO can provide an insertion loss less than or equal to 0.3 dB.

[0056] Embodiment 3 not only realizes high-density and low-cost connection of the data center, but also forms a data center wiring system on the basis of reserving the original optical module as an MPO interface, which is lower in wiring difficulty and smaller in wiring workload.

[0057] Embodiment 4:

[0058] The difference between embodiment 4 and embodiment 3 is that the optical module of each level switch is not connected with the multi-core fan-in fan-out module box through a C-class jumper, but the multi-core fan-in fan-out module box is integrated in the optical module of the switch. That is, the optical module in the cabinet is directly connected with the multi-core LC adapter panel and the multi-core LC-multi-core MPO adapter module box through a jumper with two multi-core LC connectors.

[0059] Specifically, the first multi-core fan-in fan-out module box is integrated in the uplink port optical module of the access switch, the second multi-core fan-in fan-out module box is integrated in the downlink port optical module of the aggregation switch, the third multi-core fan-in fan-out module box is integrated in the uplink port optical module of the aggregation switch, and the fourth multi-core fan-in fan-out module box is integrated in the downlink port optical module of the core switch.

[0060] Embodiment 4 has higher integration and can further save wiring space.

[0061] Finally, it should be noted that the above detailed description is merely illustrative of the technical solutions of the present application and is not limiting, and although the present application has been described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A data center multi-core fiber cabling system, characterized by, The application relates to a multi-core fiber cable connection method for an access switch, a convergence switch and a core switch. A type A jumper wire is defined as a jumper wire with multi-core LC connectors at both ends. An uplink port optical module of the access switch is connected with a first multi-core fan-in fan-out module box; a multi-core LC interface in the first multi-core fan-in fan-out module box is connected with a first type A jumper wire; the first type A jumper wire, a first multi-core LC adapter panel, a multi-core fiber cable with multi-core LC connectors at both ends, a second multi-core LC adapter panel, a second type A jumper wire and a second multi-core fan-in fan-out module box are sequentially connected; and the second multi-core fan-in fan-out module box is connected with a downlink port optical module of the convergence switch. An uplink port optical module of the convergence switch is connected with a third multi-core fan-in fan-out module box; a multi-core LC interface in the third multi-core fan-in fan-out module box is connected with a third type A jumper wire; the third type A jumper wire, a first multi-core LC-multi-core MPO adapter module box, a multi-core fiber main cable with multi-core MPO connectors at both ends, a second multi-core LC-multi-core MPO adapter module box, a fourth type A jumper wire and a fourth multi-core fan-in fan-out module box are sequentially connected; and the fourth multi-core fan-in fan-out module box is connected with a downlink port optical module of the core switch. The optical modules of the access switch, the convergence switch and the core switch all adopt LC interfaces, or the optical modules of the access switch, the convergence switch and the core switch all adopt MPO interfaces. When the optical modules of the access switch, the convergence switch and the core switch all adopt LC interfaces, the first multi-core fan-in fan-out module box, the second multi-core fan-in fan-out module box, the third multi-core fan-in fan-out module box and the fourth multi-core fan-in fan-out module box all have N input interfaces and one output interface; the input interfaces are single-core LC interfaces; and the output interface is an N-core LC interface.

2. The data center multi-core fiber cabling system of claim 1, wherein, A type B jumper wire is defined as a jumper wire with single-core LC connectors at both ends.

3. The data center multi-core fiber cabling system of claim 2, wherein, An uplink port optical module of the access switch is connected with the first multi-core fan-in fan-out module box through a second type B jumper wire; the second multi-core fan-in fan-out module box is connected with a downlink port optical module of the convergence switch through a third type B jumper wire; an uplink port optical module of the convergence switch is connected with the third multi-core fan-in fan-out module box through a fourth type B jumper wire; and a downlink port optical module of the core switch is connected with the fourth multi-core fan-in fan-out module box through a fifth type B jumper wire. When the optical modules of the access switch, the convergence switch and the core switch all adopt MPO interfaces, the first multi-core fan-in fan-out module box, the second multi-core fan-in fan-out module box, the third multi-core fan-in fan-out module box and the fourth multi-core fan-in fan-out module box all have one input interface and one output interface; the input interface is an N-channel single-core MPO interface; and the output interface is an N-core LC interface.

4. The data center multi-core fiber cabling system of claim 1, wherein, ​ 5. The data center multi-core fiber cabling system of claim 4, wherein, Class C jumper is defined as a jumper with MPO interface at both ends, and the MPO interface is a single-core N-channel interface; The uplink port optical module of the access switch is connected with the first multi-core fan-in fan-out module box through a first class C jumper, and the second multi-core fan-in fan-out module box is connected with the downlink port optical module of the aggregation switch through a second class C jumper; the uplink port optical module of the aggregation switch is connected with the third multi-core fan-in fan-out module box through a third class C jumper, and the downlink port optical module of the core switch is connected with the fourth multi-core fan-in fan-out module box through a fourth class C jumper.

6. The data center multi-core fiber cabling system of claim 2 or 4, wherein, The first multi-core fan-in fan-out module box is integrated in the uplink port optical module of the access switch, the second multi-core fan-in fan-out module box is integrated in the downlink port optical module of the aggregation switch, the third multi-core fan-in fan-out module box is integrated in the uplink port optical module of the aggregation switch, and the fourth multi-core fan-in fan-out module box is integrated in the downlink port optical module of the core switch.

7. The data center multi-core fiber cabling system of claim 1, wherein, Further comprising: a server; The downlink port optical module of the access switch is connected with the server through a first class B jumper, and the class B jumper is defined as a jumper with LC connector at both ends.

8. The data center multi-core fiber cabling system of claim 7, wherein, The server cabinet for placing the server is located in the equipment distribution area of the data center, the access switch is located in the server cabinet, the aggregation switch cabinet for placing the aggregation switch is located in the horizontal distribution area of the data center, and the core switch cabinet for placing the core switch is located in the core distribution area of the data center.

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