TWI623214B - Network entity layer parallel point-to-point fiber transmission deployment system - Google Patents

Abstract

The invention provides a network entity layer parallel point-to-point optical fiber transmission and deployment system. The foregoing system includes a first open flow switch, first and second wavelength splitting multiplexers, a smart forwarding switch, and an open flow controller. The first open flow switch is connected to the external first data port, and the first wavelength splitting multiplexer is connected to the transceiver of the first open flow switch, and the first and second wavelength splitting multiplexers are connected via the optical fiber. The forwarding switch includes a second open flow switch connected to the second wavelength splitting multiplexer and a second layer switch connected to the second open flow switch, and the switch is connected to the external second data port by the transceiver. The aforementioned controller connects and controls the first open flow switch and the intelligent forwarding switch to configure the system transmission path.

Description

Network entity layer parallel point-to-point fiber transmission deployment system

The invention relates to a fiber transmission and deployment system, in particular to a parallel physical point-to-point optical fiber transmission and deployment system applied to a network entity layer.

Existing network switches and routers have many functions. In order to implement various network protocols and increasingly complex distributed network environments, switches or routers must constantly disassemble and reassemble packets, and consume a lot of hard. Physical resources, resulting in poor network transmission efficiency, thus affecting the effective use of network bandwidth, but also unable to cope with the growing demand for point-to-point transmission of high-speed regional network in the physical layer of the future, plus the existing optical network point-to-point transmission system Most of them adopt wavelength-wavelength multiplexing (WDM) fixed-wavelength point-to-point fixed-type transmission architecture, and the number of connectable points is extremely low, such as 16, 32, 64, etc., which cannot achieve the function of dynamically configuring wavelength and fiber ,, resulting in fiber frequency The wide usage rate is extremely low, which is the biggest bottleneck faced by existing systems combined with optical networks.

With the emergence of cloud services, big data processing management, and consumer electronics products continue to evolve, and the demand for broadband applications in the Internet of Things and Internet of Things will increase, how to effectively increase the bandwidth usage of optical networks to reduce the network. Road construction cost is an important issue. The bandwidth of the physical layer is limited. The long-distance line bandwidth of the WAN has been expanded with the advancement of technology and cost. However, compared with the regional network. The bandwidth of the road, as well as the speed of application data generation and the demand for bandwidth, are relatively scarce, especially in the face of the future Internet of Things, the cloud, Big data and mobile communications, smart high-speed point-to-point bandwidth management systems are key to success.

In order to solve the problems disclosed above, an object of the present invention is to provide a parallel point-to-point optical fiber transmission deployment scheme applied to a network physical layer.

To achieve the above object, the present invention provides a network entity layer parallel point-to-point fiber transmission deployment system. The foregoing system comprises: a first open flow switch, a first wavelength splitting multiplexer, a second wavelength splitting multiplexer, a smart forwarding switch, and an open flow controller. The first open flow switch described above is connected to the external first data transmission port. The aforementioned first wavelength demultiplexing multiplexer is connected to the transceiver of the first open flow switch. The aforementioned second wavelength demultiplexing multiplexer is connected to the first wavelength demultiplexing multiplexer via an optical fiber. The aforementioned smart forwarding switch further includes a second open flow switch and a second layer switch. The second open type flow switch is connected to the second wavelength splitting multiplexer, and the second layer switch is connected to the second open type flow switch, and the second layer switch is connected to the external second data. Transfer 埠. The aforementioned open flow controller connects and controls the first open flow switch and the intelligent forwarding switch to configure the system transmission path.

In summary, the network entity layer parallel point-to-point optical fiber transmission and deployment system of the present invention can break the long-standing traditional optical network point-to-point transmission system mode and solve the network of Software Defined Network (SDN). The problem of excessive construction and operating costs caused by the excessive number of point-to-point transmissions in the physical layer high-speed regional network.

1‧‧‧Open flow controller

2‧‧‧Open flow switch

3‧‧‧Smart Forwarding Switch

4‧‧‧First Wavelength Splitter Multiplexer WDM-1

5‧‧‧Second-wavelength split-multiplexing WDM-2

6‧‧‧Open flow switch end fixed wavelength 10G_SFP+ optical transceiver module_A

7‧‧‧Smart Forwarding Switch Terminal Fixed Wavelength 10G_SFP+ Optical Transceiver Module_B

8‧‧‧FT-1 transmission line

9‧‧‧FT-2 transmission line

10‧‧‧Smart Forwarding Switch Integrates Mixed Interface Board of Traditional Cable and New Fiber Cable

11‧‧‧No wavelength limit 10G_SFP+ optical transceiver module

12‧‧‧Low-cost optical transceiver module

13‧‧‧ trunk cable

14‧‧‧Fiber

15‧‧‧ copper cable

16‧‧‧SDN network client Cs

17‧‧‧Traditional Network Client PON Client Cp

18‧‧‧Traditional Internet Client DSLAM Client Cx

19‧‧‧Second layer switch

1 is a schematic diagram of a system of a smart forwarding switch of the present invention.

Figure 2(a) is a schematic diagram of a conventional wavelength division multiplexing (WDM) optical network.

2(b) is a schematic diagram of a point-to-point optical transmission network system using the smart forwarding switch wavelength division multiplexing (WDM) of the present invention.

3 is a schematic diagram of a network entity layer parallel point-to-point optical fiber transmission deployment system according to the present invention.

4 to 6 are schematic views showing an operation of the present invention.

The specific embodiments are described below to illustrate the embodiments of the invention, but are not intended to limit the scope of the invention.

The invention relates to a high-efficiency network physical layer parallel point-to-point optical fiber transmission and deployment system, and proposes a smart forwarding switch (SFS) conversion design, which has a hybrid interface integrating the existing cable and the new optical cable, and is matched with the wavelength. Wavelength Division Multiplexing (WDM) is combined with a point-to-point optical transmission network deployment system with "flow switch" function, so that any bandwidth cable can be transmitted through the intelligent forwarding switch (SFS). Point-to-point transmission aims to achieve a flexible and seamless fiber-optic transmission bandwidth management deployment system, enabling the network physical layer system to meet the ever-changing needs of Big Data generation ultra-high-speed data bandwidth conditions, allowing light The network bandwidth is more flexible, easier to operate and manage, and achieves the purpose of high-speed, low-cost, high-frequency and wide-area physical layer optical network deployment.

The invention provides a network entity layer parallel point-to-point optical fiber transmission and deployment system, which mainly adopts the basic characteristics of data data forwarding of an open flow (OF) optical fiber system, and an open flow controller (OFC) ) "Dynamic adjustment" Open flow switch (OFS) selects the mechanism of entity transmission and forwarding, which can be used to adjust the bandwidth of the network entity transmission line, and proposes an open flow switch (OFS) combined with Layer 2 switch's improved intelligent forwarding switch (SFS) conversion design, in addition to the basic functions of OFS for real-time dynamic shunting, more importantly, the integration of traditional cable and SDN network new optical cable Mixed interface.

Please refer to FIG. 1 , which is a schematic diagram of a system of a smart forwarding switch 3 (SFS) according to the present invention, except that a wavelength-multiplexed multiplexer (WDM) is combined with a point-to-point optical transmission network system having a “flow switch” function. Cables of any bandwidth can be transmitted to the point-to-point transmission through the intelligent forwarding switch 3 (SFS), enabling efficient management of bandwidth and greatly increasing the bandwidth usage of the optical network. The aforementioned smart forwarding switch 3 further comprises: an open flow switch 2, a second layer switch 19, a smart forwarding switch integrated with a conventional cable and a new optical cable hybrid interface circuit board 10. The aforementioned second layer switch 19 is a hybrid interface circuit board 10 that connects the open flow switch 2 and the smart forwarding switch to integrate the conventional cable and the new optical cable. The aforementioned hybrid interface switch 10, which integrates the traditional cable and the new optical cable, is connected to the external SDN client 16 via the wavelength-free 10G_SFP+ optical transceiver module 11, and is connected to the conventional low-cost optical transceiver module 12. The network client PON client Cp17 and the copper port 15 are connected to the traditional network client DSLAM client Cx18.

Please refer to FIG. 2(a) and FIG. 2(b) respectively, which are schematic diagrams of a conventional wavelength-wavelength multiplexer (WDM) optical network, and a wavelength-wavelength multiplexer (WDM) point-to-point light with the "flow switch" function of the present invention. Schematic diagram of the transmission network system. It can be seen from Fig. 2(a) that each physical transmission of a conventional wavelength division multiplexing (WDM) optical network system can only be fixedly transmitted to one client. If it is a wavelength division multiplexing (WDM) of 1x32 wavelength, only 16 groups of point-to-point transmission mechanisms. As shown in Figure 2(b), in the network system of the software-defined network (SDN), the 32-wavelength of the wavelength division multiplexing multiplexer (WDM) is divided into three areas (SFS-1, SFS-3, SFS-2), through the connection of the invention, the smart forwarding switch 3 (SFS) The design change, such as the smart forwarding switch (SFS-3) 3 conversion, can use 8 wavelengths to replace the traditional 32 wavelength performance, while the open flow switch 2 (OFS) is indicated by the open flow controller 1 (OFC). For the data data, any network communication protocol such as MAC, IP or TCP, such as Layers 2 to 4 of the network communication protocol, can be selected as the basis for information comparison. The smart forwarding switch 3 (SFS) is also used when the client wants to forward the data. Through the Open Traffic Controller 1 (OFC) indication, one of the second to fourth layers of MAC, IP or TCP is selected as the basis for comparison identification.

Referring to FIG. 3, the system of the present invention is mainly divided into two parts, one is the downlink of the equipment room, and the other is the client uploading. The main components of the system include: Open Flow Controller 1 (OFC), and the first open flow switch 2 ( OFS-1), Smart Forwarding Switch 3 (SFS), First Wavelength Splitter Multiplexer 4 (WDM-1), Second Wavelength Splitter Multiplexer 5 (WDM-B) and Fixed Wavelength Series SFP+ Optical Transceiver Group, wavelength-independent low-cost optical transceiver module 12 and various copper cables 15 electrical connectors, software-defined network (SDN) network customers (Cs) 16 and traditional network customers (Cp, Cx) 17 and 18 .

Please refer to FIG. 3 , which is a schematic diagram of a network entity layer parallel point-to-point fiber transmission deployment system. The following is a further description of the entire creation process.

1. Open Flow Controller 1 (OFC): The Open Traffic (OF) protocol separates the Data Path and the Control Path and passes the planning of the transmission path to a dedicated open flow controller. 1 (OFC), and depending on the transmission needs to optimize the transmission path, establish a packet processing flow table (Flow table, FT), and transmit the message to the first open flow switch 2 (OFS-1) and intelligent forwarding Switch 3. Then, according to the first open flow switch 2 (OFS-1) and the intelligent forwarding switch 3 (SFS), the flow result of the entity transmission is collected, and the selection of the physical transmission is adjusted in real time, and the logical flow table (FT) is processed. Pass the message to the first open flow switch 2 (OFS-1) and the intelligent forwarding switch 3 (OFC) to achieve the mechanism of "dynamic adjustment" of the physical transmission. Guaranteed smooth transmission.

2. The first open flow switch 2 (OFS-1) acts as a data forwarding device and selects one of the second to fourth layers of the data, such as MAC, IP or TCP, through the Open Flow Controller 1 (OFC). The information of the road communication protocol is compared based on the information, and the data flow is forwarded according to the instruction of the Open Flow Controller 1 (OFC) to select the entity connection and forwarding, and the first open flow switch 2 (OFS-1) is based on The traffic result of collecting the physical transmission is returned to the open flow controller 1.

3. Smart Forwarding Switch 3 (SFS) is responsible for data data forwarding. It includes a second open flow switch 2 and a second layer switch (L2), so that the hybrid interface with integrated traditional cable and new optical cable has the greatest purpose. Cables of any bandwidth can be transmitted through the Smart Forwarding Switch 3 (SFS) for point-to-point transmission. The smart forwarding switch 3 (SFS) communicates with the first open flow switch 2 (OFS-1) interface on the equipment room. The 10G optical fiber transmission is mainly used. All M client signals can be forwarded by smart according to the deployment requirements. Switch 2 (SFS) built-in Layer 2 switch (L2) is all converted into electrical data, and then imported into the smart open switch 3 (SFS) built-in second open flow switch 2 for uploading data data, using open traffic The controller 1 (OFC) has a "dynamic adjustment" machine to make the shunt monitoring, so it can be transmitted only by N 10G fiber transmissions respectively; the number of the physical layer transmission fibers 14 is N, which is much smaller than the number of customers M, which saves a large number of optical fibers 14 In order to effectively increase the bandwidth usage of the transmission fiber 14. The smart forwarding switch 3 (SFS) can communicate with the client interface through either the optical cable or the copper cable 15. The transmission connector can be an optical transceiver module or an electrical connector. The smart forwarding switch 3 (SFS) is built-in. The second open flow switch 2 (OFS-2) will receive the data and import it into the second layer switch (L2) built into the smart forwarding switch 3 (SFS) in the "normal" mode on the action. ) and broadcast it to all customers, complete Data data forwarding.

4. Wavelength Splitting Multiplexer (WDM): Passive optical fiber transmission between the first open flow switch 2 (OFS-2) and the intelligent forwarding switch 3 (SFS) in the optical network connecting the deployed system. The component, together with the fixed wavelength series 10G optical transceiver module, mainly reduces the number of trunk cable 13 used; and for different smart forwarding switch 3 (SFS) groups, the fixed wavelength group of light sources can be reused to reduce Optical module cost; please refer to the description of Figure 5, which is a set of 16 wavelength series of wavelength division multiplexing (WDM) point-to-point parallel network physical layer optical fiber transmission deployment diagram according to deployment requirements. Please refer to FIG. 6 , which is a schematic diagram of a set of 32 wavelength series wavelength division multiplexing (WDM) point-to-point parallel network physical layer optical fiber transmission.

5. Wavelength-independent low-cost optical transceiver module 12 and various copper cables 15 electrical connectors: in order to effectively integrate the new system SDN network and all existing client systems into a hybrid service system, located in the intelligent forwarding switch 3 (SFS The interface of the electric transmission line on the inner circuit board can be a wavelength-independent 10G, 2.5G, 1.25G and other low-cost optical transceiver modules 12, or can be a variety of copper cables 15 electrical connectors, and can use all existing equipment Optical cable and copper cable 15.

6. SDN network client (Cs) and existing network customers (Cp, Cx): Smart Forwarding Switch 3 (SFS) integrates the existing interface of existing cable and SDN network new fiber cable, and can simultaneously connect SDN network customers ( Cs) Data transmission with existing network clients (Cp, Cx).

The main purpose of the above content is to make the optical network bandwidth use more flexible, easier to operate and manage, and achieve the purpose of high-speed, low-cost, high-frequency and wide-area physical layer optical network deployment.

For the purpose of achieving the network entity layer parallel point-to-point optical fiber transmission and deployment system proposed by the present invention, please refer to FIG. 3 , which is a schematic diagram of a network entity layer parallel point-to-point fiber transmission deployment system, and an example is provided by the present invention. Explain (see Figure 4), the figure is in IP position The schematic is a schematic diagram of a point-to-point fiber transmission system based on the comparison of network communication protocols. The foregoing system comprises: an open flow controller 1, a first open flow switch 2, a second open flow switch 2, a smart forwarding switch 3, a first wavelength splitting multiplexer 4, and a second wavelength splitting multiplexer 5 , fixed wavelength series open flow switch end 10G_SFP+ optical transceiver module _A 6, and smart forwarding switch 3 (SFS) end 10G_SFP+ optical transceiver module _B7, FT-1 transmission line 8, FT-2 transmission line 9. The intelligent forwarding switch integrates the traditional interface circuit board of the traditional cable and the new optical cable. The low-cost non-wavelength limited 10G_SFP+ optical transceiver module 11, the low-cost optical transceiver module 12, the trunk cable 13, the optical fiber 14, The conventional copper cable 15 will be further described below with respect to the procedure of the present embodiment.

The transfer program follows the following rules:

1). Transfer data from the computer terminal: Transfer the A1 data (address IP1) to the address IP6.

Step 1. The open flow controller 1 at the machine room transmits the flow meter to the FT-1 transmission line 8 data, the second wavelength splitting multiplexer, and synchronously transmits the flow meter to the intelligent forwarding with the FT-2 transmission line 9. Switch 3.

Step 2. The second wavelength-wavelength multiplexer instructs the data network A1 to select the IP network communication protocol information through the FT-1 transmission line 8 of the open flow controller 1, and transmits the data according to the specified entity 埠 Port1. Forwarding, after the "electrical/optical" conversion of the 10G_SFP+ optical transceiver module 6 of Port1, the signal is transmitted to the trunk optical cable 13 via the first wavelength demultiplexing multiplexer 4 (WDM-1) at the signal wavelength λ1 to be transmitted to the second wavelength splitting wave. Device 5 (WDM-2), transmitted by the second wavelength demultiplexing multiplexer 5 (WDM-2) wavelength division wave at the signal wavelength λ1 to the smart forwarding switch 3 (SFS) physical transmission 埠 Port 5 10G_SFP + optical transceiver The module 7 is converted into an electrical signal by "optical/electrical".

Step 3. The intelligent forwarding switch 3 (SFS) has built-in OFS-2 corresponding to the FT-2 indication of the Open Flow Controller 1 (OFC), and the data to be forwarded is "normal" in the operation (normal). The method is to import the second layer switch 19 (L2) built in the smart forwarding switch 3 (SFS), and transmit it to all customers in a normal broadcast mode through the integrated interface circuit board 10 integrating the existing cable and the new optical cable. The downlink data is forwarded to the designated transmission address IP6 client.

2). Send client upload data: (1). Take B6 data (address IP6) and transmit it to address IP3, (2). Take Bx data (address IPx) and transfer to address IP2, (3). The Bn data (address IPn) is transmitted to the address IP2.

Step 1. Upload the data data of multiple client optical signals or electrical signals, and integrate the mixed interface circuit board 10 of the existing cable and the new optical cable into the second open type flow switch built into the smart forwarding switch 3 (SFS) 3. 2 (OFS-2), step 2. According to the FT-2 indication of Open Flow Controller 1 (OFC), compare the IP network protocol information selected by data data B6, Bx, Bn, and transmit according to the specified entity.埠For data data forwarding, B6 and Bx are designated as the same entity to connect to Port7, and smart forwarding switch 3 (SFS) depends on (Sequence 1) Bx, (Sequence 2) B6 sequentially through Port7's 10G_SFP+ optical transceiver module. After the "electric/light" conversion, the signal is wavelength λ7 is transmitted to the trunk cable 13 via the second wavelength demultiplexing multiplexer 5 (WDM-2) to the wavelength division multiplexer 4 (WDM-1), and the first wavelength is divided. Wavelength multiplexer 4 (WDM-1) wavelength division is transmitted to the 10G_SFP+ optical transceiver module 6 of the physical transmission 埠Port3 of the open flow controller 2 (OFS-1) at the signal wavelength λ7, and then the first open type Flow switch 2 (OFS-1) forwards Bx and B6 data to addresses IP2 and IP3; Bn is assigned to physical transport 埠Port8 to signal wave The long wavelength λ8 is transmitted to the first wavelength splitting multiplex 4 (WDM-1) via the second wavelength splitting multiplex 5 (WDM-2) into the trunk cable 13 trunk cable (WDM-1), and the first wavelength splitting multiplexer 4 (WDM-1) The wavelength splitting is transmitted to the 10G_SFP+ optical transceiver module 6 of the physical transmission port Port4 of the first open type flow switch 2 (OFS-1) at the signal wavelength λ8, and then the first open type flow switch 2 (OFS-1) Transfer the Bn data to the address IP2; Step 3. The first open flow switch 2 (OFS-1) instructs the related flow data to be forwarded through the Open Flow Controller 1 (OFC). When the transmission fiber bandwidth usage rate is too high, the Open Flow Controller 1 (OFC) re-adjusts the FT indication of the transmission 依据 according to the Open Traffic Switch 2 (OFS) Instant Bandwidth Usage Detection Result to avoid bandwidth. Congestion, effectively improve the usage rate of the uploaded fiber, and achieve the point-to-point transmission purpose of seamless integration.

[Features and effects]

The schematic diagram of the network entity layer parallel point-to-point fiber 14 fiber transmission transmission system proposed by the invention has the following advantages when compared with the traditional high-speed photoelectric exchange technology:

The system of the invention proposes a smart forwarding switch 3 design: 1). The intelligent forwarding switch 3 (SFS) combines the characteristics of the timely dynamic shunting mechanism with the Openflow system OFC and OFS, and cooperates with wavelength division multiplexing (WDM) to construct a device. The "flow switch" function of the point-to-point optical transmission network effectively improves the transmission fiber utilization rate. 2) The intelligent forwarding switch 3 (SFS) has a hybrid interface design that integrates the existing cable with the new optical cable, so that regardless of the bandwidth Cables can be transmitted through point-to-point transmission through Smart Forwarding Switch 3 (SFS) to achieve the goal of integrating various bandwidth customers and amplifying the number of clients.

The system of the present invention proposes a high-speed and low-speed high-speed optical transceiver module and optical fiber 14, which is matched with a client with an appropriate bandwidth estimation amount to reach N clients by using N fiber channels, and N<< M. When the transmission rate of the machine room is down or the transmission of the client is too high, the open flow controller 1 (OFC) detects the result based on the open bandwidth switch 2 (OFS). Re-adjust the FT indication of the transmission to avoid bandwidth congestion, effectively improve the usage rate of the upload fiber, and have a "dynamic adjustment" mechanism to make the optical network bandwidth more flexible, easier to operate and manage, and achieve seamless integration of the physical layer. The purpose of point-to-point transmission is the main essence of the invention.

The client transmits to the Smart Forwarding Switch 3 (SFS) interface, regardless of the non-designated wavelength 10G_SFP+ optical transceiver module, 1.25G_SFP optical transceiver module, active optical cable AOC, or existing copper cable that has been stably mass-produced in the existing market. All kinds of transmissions are available, including the traditional system, the old optical cable and the copper cable can all be used.

The network entity layer parallel point-to-point optical fiber transmission and deployment of the invention is designed to cooperate with the SDN network physical layer system to meet the ever-changing requirements of the big data generation ultra-high speed data bandwidth condition, and effectively reduce the physical layer construction and maintenance cost. The optical network bandwidth is more flexible, easier to operate and manage, and achieves the purpose of high-speed, low-cost, high-frequency and wide-area physical layer optical network deployment.

The detailed description of the preferred embodiments of the present invention is intended to be limited to the scope of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.

Claims (6)

A network entity layer parallel point-to-point optical fiber transmission deployment system comprises: a first open flow switch connected to an external first data transmission port; a first wavelength demultiplexing multiplexer connected to the first open flow switch a second wavelength splitting multiplexer connected to the first wavelength demultiplexing multiplexer via an optical fiber; the intelligent forwarding switch comprising a second open flow switch and a second layer connected to the second open flow switch The switch, wherein the transceiver of the second open flow switch is connected to the second wavelength splitting multiplexer, and the transceiver of the second layer switch is connected to the external second data transmission port; and the open flow control And connecting and controlling the first open flow switch and the smart forwarding switch to configure a system transmission path. The network entity layer parallel point-to-point optical fiber transmission deployment system according to claim 1, wherein the open flow controller establishes a processing logic data table of the packet, and transmits the processing logic data table to the first open type A flow switch and the smart forwarding switch are configured to configure the system transmission path. The network entity layer parallel point-to-point optical fiber transmission and deployment system according to claim 1, wherein the open flow controller is further based on the first open type flow switch and the flow result returned by the smart forwarding switch. Dynamically adjust the system transmission path. The network entity layer parallel point-to-point optical fiber transmission deployment system according to claim 1, wherein the smart forwarding switch further comprises a hybrid interface integrating the traditional cable and the new optical cable. The network entity layer parallel point-to-point optical fiber transmission and deployment system according to claim 1, wherein the intelligent forwarding switch is configured to import the data data in a normal broadcast manner into the second layer. Change the machine and broadcast the data to the second data transmission. The network entity layer parallel point-to-point optical fiber transmission and deployment system according to claim 1, wherein the first open flow relationship is configured according to the configuration of the open flow controller, and the second layer to the fourth layer are located The network protocol data is compared and forwarded.