A 10 Gigabit fiber optic switch supporting 2-way bypass functionality

Abstract

This invention relates to the technical field of data communication, specifically to a 10 Gigabit fiber optic switch supporting dual-path bypass functionality. The switch includes a chassis, motherboard, flange interface, VDDH, etc. The motherboard integrates 12 10 Gigabit fiber optic network interfaces, two optical switches, and a switching chip. The two optical switches are D2×2B mechanical optical switches, which switch the optical path between working and power-off states via motherboard electrical control signals. This allows for direct bypass connection of the two 10 Gigabit fiber optic links when the switch is powered off. This invention integrates dual-path bypass functionality within a single 10 Gigabit switch, eliminating the need for external modules. It provides power-off pass-through protection for two 10 Gigabit links simultaneously, supports link aggregation to improve bandwidth and reliability, saves rack space, reduces cabling complexity and total cost of ownership, supports hot maintenance, and is suitable for high-reliability network scenarios such as dual-ring networks and redundant backbones.

Description

Technical Field

[0001] This invention relates to the field of data communication technology, specifically to a 10 Gigabit fiber optic switch that supports 2-way bypass functionality. Background Technology

[0002] Some switches are powered by UPS and have external bypass modules with built-in single-path bypass functionality. However, external modules have drawbacks such as complex wiring, increased potential points of failure, and large space requirements; while switches with built-in single-path bypass typically only support gigabit speeds or provide only one bypass port, failing to meet users' needs for 10-gigabit bandwidth and multi-link redundancy. When the network topology requires simultaneous protection of two independent 10-gigabit links, existing equipment often requires stacking two single-path bypass switches, resulting in high costs and complex management. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a 10 Gigabit fiber optic switch that supports 2-way bypass functionality, thus solving the problems mentioned in the background section. Technical solution

[0004] To achieve the above objectives, the present invention provides the following technical solution: a 10 Gigabit fiber optic switch supporting 2-way bypass functionality, characterized in that it comprises: The casing is divided into a lower casing and an upper casing; The motherboard is fixed in the front middle of the lower shell, and is electrically connected to 12 10 Gigabit fiber optic network interfaces, 2 optical switches on the right side, and a switching chip on the rear side. The external interfaces of the 10 Gigabit fiber optic network interfaces protrude from the front of the casing. The 2 optical switches have 8 ports symmetrically arranged on the left and right sides, namely P1, P2, P3 and P4 on one side, and P5, P6, P7 and P8 on the other side. The flange interface is fixed inside the lower housing at the front right, with its outer interface protruding from the front of the housing. VDDH consists of two symmetrical AC power supplies and one DC power supply, all located inside the rear of the chassis, with their external sockets protruding from the back of the chassis. The 2-way optical switch has 8 pigtails inserted into the flange interface, forming fiber optic links with 12 10 Gigabit fiber optic network interfaces. The 2-way optical switch has 2 bypass controls; the first bypass connects to P1 and P7 of the 10 Gigabit fiber optic network interface, and the second bypass connects to P2 and P8 of the 10 Gigabit optical port. The two bypasses are identical and symmetrically packaged in physical location. The control logic of the 2-way optical switch is that the motherboard initiates the operation of the 2-way optical switch via pin electrical control signals. That is, in the power-off and operating states, the 2-way optical switch guides the 4 input optical signals to the 4 designated output fibers, thereby achieving rapid switching of optical paths.

[0005] Preferably, the two optical switches are D2×2B mechanical optical switches.

[0006] Preferably, the operating wavelength of the two optical switches is 1260–1620 nm.

[0007] Preferably, the operating state is when the switch motherboard is working normally, VDDH provides 3V voltage to the two optical switches, and the switch is working normally.

[0008] Preferably, the operating state is as follows: when the switch is working normally, the fiber optic lines of the Station device's optical module are connected to ports P1 and P2, and P5 and P6 are connected to the optical module of switch port 2, and the LED indicator of switch port 2 is lit; ports P3 and P4 are connected to the optical module of switch port 11, and P7 and P8 are connected to the optical module of the Server device, and the LED indicator of switch port 11 is lit, indicating that the two bypass links are successfully connected.

[0009] Preferably, the power-off state is when the switch motherboard is powered off, VDDH does not provide 3V voltage, the optical module will be in a power-off state, and the switch will no longer work.

[0010] Preferably, the power failure state is when the switch motherboard is powered off, the optical fiber lines of the Station device's optical module are connected to ports P1 and P2, and data will be transmitted from ports P7 and P8 to the Server device through the optical fiber lines.

[0011] Preferably, it also includes cooling fans, which are divided into two symmetrical parts located in the rear center of the casing, where the casing has a heat dissipation vent.

[0012] (III) Beneficial Effects This invention provides a 10 Gigabit fiber optic switch that supports 2-way bypass functionality, and has the following advantages: The 1-2 Bypass can support one dual-fiber line or two single-fiber lines, and can achieve link aggregation of two optical fibers to improve link bandwidth, ensure link reliability, and achieve link balancing.

[0013] 2. The product is highly integrated, and a single device can provide "power outage pass-through" protection for two 10 Gigabit fiber optic links, eliminating single points of failure in the network. It is especially suitable for dual-ring networks or redundant backbone networks. Compared with using two devices or external modules, it saves cabinet space and reduces cabling complexity and total cost of ownership.

[0014] 3. In the event of equipment failure, network services will not be interrupted, allowing maintenance personnel to hot-swap or repair the switch without interrupting services. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 The front view of the present invention with the top shell removed; Figure 3 for Figure 2 Top view; Figure 4 for Figure 2 Rear view; Figure 5 This is a schematic diagram of a 2-channel optical switch circuit. Figure 6 Path Diagram for a 2-way optical switch optical bypass switch; Figure 7 This is a schematic diagram of a 2-channel optical switch; Figure 8 A schematic diagram of the working state of a 2-channel optical switch; Figure 9 This is a schematic diagram of the circuit in the power-off state of the two optical switches; Figure 10 This is a schematic diagram of the working state of the switch of the present invention; Figure 11 This is a schematic diagram of the switch in the power-off state of the present invention; In the diagram: 1. Chassis; 101. Lower casing; 102. Upper casing; 2. Motherboard; 201. 10 Gigabit fiber optic network interface; 202. 2-channel optical switch; 203. Switching chip; 3. Flange interface; 4. VDDH; 401. AC power supply; 402. DC power supply; 5. Cooling fan. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] In this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0018] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0019] Example 1: Please refer to Figures 1-11 This invention provides a technical solution: a 10 Gigabit fiber optic switch supporting 2-way bypass functionality, comprising: The housing (1) is divided into a box-shaped lower housing (101) and a thin plate-shaped upper housing (102), which are detachably connected. The lower housing (101) serves as the load-bearing base of the whole machine. It adopts a box-shaped structure formed by sheet metal stamping, which has high structural strength and can accommodate and fix all internal electrical and optical components. It has reserved interfaces and heat dissipation openings. The upper housing (102) is a thin plate-shaped cover plate, which is detachably assembled with the lower housing (101) by screws. This facilitates the installation, debugging and later maintenance of internal equipment, and also plays a role in dust prevention, protection and electromagnetic shielding.

[0020] The motherboard (2) is fixed in the front middle of the lower casing (101), and is electrically connected to 12 10 Gigabit fiber optic network interfaces (201), a two-way optical switch (202) on the right side, and a switching chip (203) on the rear side. The external interface of the 10 Gigabit fiber optic network interface (201) protrudes from the front of the casing (1). The two-way optical switch (202) has 8 ports symmetrically arranged on the left and right sides, namely P1, P2, P3 and P4 on one side, also known as P1 (Black), P2 (Red), P3 (Blue) and P4 (White); and P5, P6, P7 and P8 on the other side, also known as P1' (Black), P2' (Red), P3' (Blue) and P4' (White). Figure 6-9The motherboard (2) is the core functional carrier of the switch. The core switching unit and the bypass control unit are integrated and electrically connected on the board. The 12 10 Gigabit fiber network interfaces (201) are used to access the 10 Gigabit optical modules and fiber optic links to realize data access and forwarding; the 2 optical switches (202) are the core execution components of the bypass function. They have 8 symmetrical ports, namely P1, P2, P3, P4 on one side and P5, P6, P7, P8 on the other side. They are connected to external interfaces and switch ports through pigtails to realize the switching and conduction of optical paths; the switching chip (203) is the core processing unit of the switch data exchange. It is responsible for the forwarding, addressing and management of 10 Gigabit data and realizes the Layer 2 / Layer 3 data exchange function between the 12 10 Gigabit ports.

[0021] The flange interface (3) is fixed inside the lower shell (101) on the front right side, with its external interface protruding from the front of the housing (1). The flange interface (3) serves as the external adapter interface for the pigtails of the two-way optical switch (202). It adopts a standard fiber optic flange structure, which enables the rapid connection between the built-in pigtails of the optical switch and the external optical fiber. At the same time, it fixes the pigtails, reduces insertion and removal losses, ensures the stability and repeatability of the optical path connection, and facilitates on-site wiring and link debugging.

[0022] The VDDH (4) consists of two symmetrical AC power supplies (401) and one DC power supply (402), both located inside the rear of the housing (1), with their external sockets protruding from the back of the housing (1). The dual AC power supplies (401) in the VDDH (4) form an AC redundant power supply, so that the other power supply can seamlessly take over the load when one power supply fails, avoiding the whole machine from crashing due to a single power supply failure; the DC power supply (402) can be connected to a DC power supply system, adapting to DC power supply scenarios in computer rooms and industrial sites. The multi-power redundancy design greatly improves the power supply reliability of the equipment.

[0023] The 8 pigtails of the 2-way optical switch (202) are inserted into the flange interface (3) and simultaneously form an optical fiber link with 12 10 Gigabit optical network interfaces (201). The 2-way optical switch (202) has 2 bypass controls. The first bypass optical bypass is connected between P1 and P7 of the 10 Gigabit optical network interface (201), and the second bypass optical bypass is connected between P2 and P8 of the 10 Gigabit optical port. The two bypass optical bypasses are completely identical and are symmetrically packaged in physical location. The control logic of the 2-way optical switch (202) is that the motherboard (2) starts the working state of the 2-way optical switch (202) through the pin electrical control signal. That is, in the power-off state and the working state, the 2-way optical switch (202) guides the 4 input optical signals to the 4 designated output optical fibers, thereby realizing the fast switching connection of the optical path and ensuring that the 2 physical optical fiber links are not interrupted.

[0024] The two-way optical switch (202) is a D2×2B mechanical optical switch.

[0025] The operating wavelength of the two-way optical switch (202) is 1260-1620nm.

[0026] The operating state is as follows: When the switch motherboard (2) is working normally, VDDH (4) provides 3V to the two optical switches (202), and the switch is working normally. When the switch is working normally, the fiber optic lines of the Station device's optical module are connected to ports P1 and P2, and P5 and P6 are connected to the optical module of switch port 2; the LED indicator of switch port 2 lights up. Ports P3 and P4 are connected to the optical module of switch port 11, and P7 and P8 are connected to the optical module of the Server device; the LED indicator of switch port 11 lights up. At this time, the two bypass links are successfully connected. See also... Figure 10 Under normal operating conditions, the VDDH power supply unit (4) supplies power to the entire machine, the motherboard (2) operates normally, and simultaneously provides 3V operating voltage to the two optical switches (202), which are in the electrically controlled conduction state. At this time, the fiber optic lines of the Station device's optical modules are connected to optical switch ports P1 and P2, and the optical signal is output from P5 and P6 through the internal conduction path of the optical switch, connecting to the optical module of switch port 2. The corresponding LED indicator of switch port 2 is lit, and the data enters the switching chip (203) to complete the switching process. At the same time, the optical module of switch port 11 is connected to optical switch ports P3 and P4, and the optical signal is output from P7 and P8 through the optical switch, transmitting to the optical module of the Server device. The corresponding LED indicator of switch port 11 is lit. In this state, both links complete data exchange through the switch, and the Bypass link is connected to the switch to work, realizing the normal forwarding and management of 10 Gigabit data.

[0027] The power-off state refers to the situation where the switch motherboard (2) is powered off. In this state, VDDH does not provide 3V, the optical module will be in a power-off state, and the switch will no longer operate. When the switch motherboard (2) is powered off, the fiber optic lines of the Station device's optical module are connected to ports P1 and P2. Data will be transmitted from ports P7 and P8 to the Server device via fiber optic lines, ensuring uninterrupted data transmission. (Reference) Figure 11In the power-off bypass state, if the mainboard (2) of the switch loses power due to a fault or external power failure, the VDDH power supply unit (4) stops supplying 3V voltage to the two optical switches (202), and the two optical switches (202) switch to the default pass-through state. At this time, after the optical fiber line of the Station device's optical module enters the port P1 and P2, the optical signal no longer passes through the internal switching chip of the switch, but is directly output from the port P7 and P8 through the bypass optical path inside the optical switch, and is transmitted to the Server device via the optical fiber line. The two physical optical fiber links remain fully connected, and the data transmission is not affected by the power failure of the switch, achieving the protection effect of the link never being interrupted.

[0028] The bypass control circuit of this device is based on the D2×2B mechanical optical switch chip U2, powered by the VDDH power bus, and works with external filtering circuits to achieve stable electronic switching. (Refer to...) Figure 5 In the power supply circuit, the VDDH power input is divided into two paths. One path is connected to the VCC pin 1 of the optical switch U2 after being connected in parallel with a 10μF filter capacitor C1 and a 0.1μF filter capacitor C2. The other path is connected to the GND pin 10 of U2 and grounded. The large-capacity capacitor C1 in C0603 package is used to filter out low-frequency ripple in the power supply, and the small-capacity capacitor C2 is used to filter out high-frequency interference. Together, they provide a clean and stable 3V operating voltage for the optical switch, ensuring the reliability of the switching operation.

[0029] The optical switch U2 has 10 pins. Pin 1 is the positive power supply VCC, pin 10 is the ground GND, and pins 2 to 5 and pins 6 to 9 are two sets of unused pins NC0-NC3 and NC7-NC4, respectively. They have no electrical connection function and are only reserved for structural purposes. The core control logic of the circuit is as follows: When the whole machine is working normally, VDDH outputs a 3V DC voltage and loads it onto the VCC pin of U2. The optical switch internally switches the optical path to the working state, so that P1-P5, P2-P6, P3-P7, and P4-P8 are respectively turned on, and the optical signal can enter the switch port to complete data exchange. When the whole machine is powered off or the motherboard fails and VDDH stops outputting 3V voltage, the drive mechanism loses power, and the internal reset spring of the optical switch drives the optical components to reset to the default position. The optical path switches to the bypass state, so that P1-P7 and P2-P8 are respectively turned on, and the input optical signal is directly connected to the other end device, completely bypassing the internal circuit of the switch, and realizing the bypass function of power failure protection.

[0030] It also includes cooling fans (5), which are divided into two symmetrical parts located in the rear center of the casing (1), where the casing (1) has a heat dissipation vent. The cooling fans (5) can quickly dissipate the heat generated by the motherboard (2), the switching chip (203), and the VDDH (4) to the outside, ensuring that the internal components operate within a reasonable temperature range, improving the long-term stability and service life of the equipment. The dual-fan redundancy design also avoids the risk of heat dissipation failure caused by the failure of a single fan.

[0031] Work process: Prepare the base of the casing, remove the casing (101) and place it horizontally as the installation reference, clean the internal mounting surface, check the mounting hole position and opening position of each component, and ensure that there are no machining burrs and deformations.

[0032] Install the motherboard assembly. First, solder the 10 Gigabit fiber optic network interface (201), 2 optical switches (202) and switching chip (203) onto the motherboard (2) using surface mount technology. After completing the board-level circuit continuity test and basic function debugging, fix the motherboard (2) to the front middle position inside the lower shell (101) with fastening screws. Adjust the position so that the external interface of the 10 Gigabit fiber optic network interface (201) is aligned with the opening on the front of the lower shell (101) to ensure that the interface is fully exposed and there is no assembly interference.

[0033] Install the flange interface assembly, fix the flange interface (3) to the front right part inside the lower shell (101) with screws, align the outer interface of the flange interface (3) with the corresponding opening on the front of the lower shell (101) and expose the shell flat; then insert the 8 pigtails from the 2-way optical switch (202) into the inner interface of the flange interface (3) according to the color code, complete the optical path connection between the optical switch and the external interface, and at the same time tidy up the pigtail direction and fix it with wire clips to avoid excessive bending of the pigtails and increased loss.

[0034] Install the power supply and heat dissipation components, fix the two AC power supplies (401) and one DC power supply (402) in sequence at the rear left and right positions inside the lower shell (101), so that the external sockets of each power supply are aligned with the openings on the back of the lower shell (101) and exposed, and complete the line connection between the power output end and the power supply pin of the motherboard (2); fix the two cooling fans (5) symmetrically in the rear middle of the lower shell (101), align them with the pre-set heat dissipation vents of the case, and connect the fan power supply lines to the fan control interface of the motherboard (2).

[0035] For the complete machine assembly and finished product testing, align the upper shell (102) with the mounting fold of the lower shell (101), and complete the detachable connection by tightening screws, and close the complete machine shell (1); then connect the test power supply and test fiber in sequence, and test the 10 Gigabit port data exchange function, Bypass switching function, power redundancy switching function and heat dissipation system operation status one by one. After confirming that all functional indicators meet the design requirements, the complete machine assembly is completed.

[0036] When the equipment is powered on normally, the AC power supply (401) or DC power supply (402) of VDDH (4) converts the external input power into the working voltage of the whole machine to power the motherboard (2) and the two optical switches (202). After the motherboard (2) is started, the switching chip (203) completes firmware loading and port initialization, and the 12 10 Gigabit fiber network interfaces (201) enter the standby working state. At the same time, the motherboard (2) outputs a 3V electrical control signal to the two optical switches (202) through the pins. The internal mechanism of the optical switch is activated and switches to the normal working optical path. After the fiber optic link between the Station and the Server is connected, the uplink optical signal enters the two optical switches (202) through the flange interface (3) and is then introduced into the corresponding 10 Gigabit fiber network interface (201). The switching chip (203) completes data addressing and forwarding to realize the normal switching function of the 10 Gigabit network.

[0037] When the device experiences an external power outage, power failure, or motherboard hardware failure, the 2-way optical switch (202) loses its 3V operating voltage. Under the action of the reset force, the internal mechanical structure automatically resets to the bypass optical path. The input optical signal directly bypasses the switching chip (203) and is conducted from the bypass output port to the other end device, maintaining continuous data transmission of the link. After the device power supply is restored and the motherboard (2) restarts normally, the 2-way optical switch (202) regains 3V power supply and automatically switches back to the working optical path. The switch resumes normal data exchange function. The entire switching process does not require manual intervention and can achieve millisecond-level smooth switching.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A 10 Gigabit fiber optic switch supporting 2-way bypass functionality, characterized in that, include: The casing (1) is divided into a lower casing (101) and an upper casing (102). The motherboard (2) is fixed in the front middle part of the lower shell (101), and is electrically connected to 12 10 Gigabit fiber optic network interfaces (201), a 2-way optical switch (202) on the right side and a switching chip (203) on the rear side; the external interface of the 10 Gigabit fiber optic network interface (201) protrudes from the front of the casing (1); the 2-way optical switch (202) has 8 ports symmetrically arranged on the left and right, namely P1, P2, P3 and P4 on one side, and P5, P6, P7 and P8 on the other side; The flange interface (3) is fixed inside the front right part of the lower shell (101), and its outer interface protrudes from the front of the casing (1); VDDH (4) is divided into two AC power supplies (401) and one DC power supply (402) that are symmetrical on the left and right sides. Both are located inside the rear of the casing (1), and their external sockets are exposed on the back of the casing (1). The 8 pigtails of the 2-way optical switch (202) are inserted into the flange interface (3) and simultaneously form an optical fiber link with 12 10 Gigabit fiber network interfaces (201). The 2-way optical switch (202) has 2 bypass controls. The first bypass optical bypass is connected between P1 and P7 of the 10 Gigabit fiber network interface (201), and the second bypass optical bypass is connected between P2 and P8 of the 10 Gigabit optical port. The two bypass optical bypasses are completely identical and are symmetrically packaged in physical location. The control logic of the 2-way optical switch (202) is that the motherboard (2) starts the working state of the 2-way optical switch (202) through the pin electrical control signal. That is, in the power-off state and the working state, the 2-way optical switch (202) guides the 4 input optical signals to the 4 designated output optical fibers, thereby realizing the fast switching connection of the optical path.

2. A 10 Gigabit fiber optic switch supporting 2-way bypass function according to claim 1, characterized in that: The two-way optical switch (202) is a D2×2B mechanical optical switch.

3. A 10 Gigabit fiber optic switch supporting 2-way bypass function according to claim 2, characterized in that: The operating wavelength of the two-way optical switch (202) is 1260-1620nm.

4. A 10 Gigabit fiber optic switch supporting 2-way bypass function according to claim 1, characterized in that: The working state is as follows: when the switch motherboard (2) is working normally, VDDH (4) provides 3V voltage to the two optical switches (202), and the switch is working normally.

5. A 10 Gigabit fiber optic switch supporting 2-way bypass function according to claim 4, characterized in that: The operating state is as follows: when the switch is working normally, the fiber optic lines of the Station device's optical module are connected to ports P1 and P2, and P5 and P6 are connected to the optical module of switch port 2, and the LED indicator of switch port 2 is lit; ports P3 and P4 are connected to the optical module of switch port 11, and P7 and P8 are connected to the optical module of the Server device, and the LED indicator of switch port 11 is lit, indicating that the two bypass links are successfully connected.

6. A 10 Gigabit fiber optic switch supporting 2-way bypass function according to claim 1, characterized in that: The power-off state refers to the situation where the switch motherboard (2) is powered off, VDDH does not provide 3V voltage, the optical module will be in a power-off state, and the switch will no longer work.

7. A 10 Gigabit fiber optic switch supporting 2-way bypass function according to claim 6, characterized in that: The power-off state refers to the situation where the switch motherboard (2) is powered off. When the optical fiber line of the Station device optical module is connected to ports P1 and P2, the data will be transmitted from ports P7 and P8 to the Server device through the optical fiber line.

8. A 10 Gigabit fiber optic switch supporting 2-way bypass function according to claim 1, characterized in that: It also includes cooling fans (5), which are divided into two symmetrical ones, located in the middle of the rear of the casing (1), where the casing (1) has a heat dissipation vent.

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