Method and device for realizing routing gateway redundant hot backup based on VPX architecture

Abstract

The invention discloses a method and a device for realizing routing gateway redundant hot backup based on a VPX architecture, and belongs to the technical field of IP data communication. The method comprises the following steps: selecting a backboard frame which is provided with double switching board cards and the switching board cards are provided with interfaces externally connected with Ethernet; two power supply board cards are deployed in the VPX case; the main control board card and the switching board card are combined and deployed to form a double-main-control double-switching framework; deploying a function board card of which the data flow direction of an external relay interface can be configured; a VRRP protocol is started on a dual-exchange external connection Ethernet interface, and routing gateway redundant hot backup is realized through the protocol. According to the invention, an open type case framework of the VPX is utilized, through selection of a backboard framework, deployment of a power supply board card, deployment of a main control board card, deployment of a function board card and deployment of the VRRP, the redundant hot backup of the routing gateway can be formed by single case equipment, and the method has obvious cost advantage, power supply advantage and deployment space advantage.

Description

Technical Field

[0001] The present invention relates to the field of IP data communication technology, and in particular to a method and device for implementing redundant hot backup of routing gateways based on VPX architecture. Background Art

[0002] LAN users connect to the external network through a router gateway. When the default router gateway goes down, the internal computer cannot route to the external network through it. The technologies to solve this problem mainly include VRRP (Virtual Router Redundancy Protocol) and HSRP (Hot Standby Routing Protocol). At present, the application scenarios of VRRP and HSRP both utilize redundant router devices. After the main device fails, it switches to the redundant router device to ensure the reliability and stability of data transmission. Its implementation method is as follows: Figure 1 As shown in the figure. However, this traditional method of implementing VRRP and HSRP redundant hot backup solutions requires providing twice as many router gateway devices, and the additional devices need to be powered separately, resulting in high costs, and no advantages in power supply and deployment space.

[0003] The VPX architecture is the current mainstream modular, universal, open chassis architecture. It is an international standard high-speed serial bus architecture launched and maintained by the VITA (VME International Trade Association) and has a wide range of application scenarios.

[0004] VPX is the general term for the VITA series of protocols. The VPX basic standard is described by VITA46.0 (basic protocol) and VITA46.1 (VME connection). VITA48 has made new definitions for heat dissipation and structural reinforcement, and VITA65, namely OpenVPX, is mainly aimed at compatibility issues between different manufacturers. The VPX bus architecture is still being updated and upgraded, and it is the bus architecture technology with the most development potential.

[0005] The main features of VPX include: the form factor includes two specifications, 6U and 3U, which has a high practical advantage in the use scenario with limited size and weight; it supports a variety of serial interconnection buses, provides many high-speed I / O signals, and can achieve higher data exchange throughput capacity; it supports a variety of power supply solutions, and provides three cooling methods: air cooling, metal conduction cooling, and liquid cooling, which can well solve the cooling problems of multiple boards, small chassis, and high-density integration. VITA's various specifications ensure that VPX bus products can still work reliably in extreme temperature, shock and vibration environments.

[0006] Therefore, we consider using the dual power supply, dual switching, multi-slot and bus technology of a single device in the VPX architecture to implement redundant hot backup of the data gateway of a single device to solve the problems of high cost, power supply and deployment space disadvantages of the traditional method. Summary of the invention

[0007] In view of this, the present invention provides a method and apparatus for implementing redundant hot backup of routing gateways based on the VPX architecture. By utilizing the combination of functional transformation of the VPX architecture and the VRRP protocol, redundant hot backup of routing gateways of a single device can be implemented. There is no need to use twice as many router gateway devices as in the traditional method, and this method has obvious cost advantages, power supply advantages, and deployment space advantages.

[0008] To achieve the above object, the technical solution adopted by the present invention is:

[0009] In a first aspect, an embodiment of the present invention provides a method for implementing redundant hot backup of a routing gateway based on a VPX architecture, the method comprising:

[0010] Select a backplane frame with dual switch cards and the switch cards have external Ethernet interfaces;

[0011] Deploy two power supply cards in the VPX chassis;

[0012] Combine the main control board and the switch board to form a dual-control dual-switch architecture;

[0013] Deploy configurable function boards for data flow to external relay interfaces;

[0014] Enable the VRRP protocol on the externally connected Ethernet interface of the dual switch to implement redundant hot backup of the routing gateway.

[0015] Preferably, the backplane frame includes: VITA65 white paper 11.2.2 16-slot backplane frame, VITA65 white paper 11.2.3 20-slot backplane frame, VITA65 white paper 11.2.6 10-slot backplane frame, VITA65 white paper 11.2.7 10-slot backplane frame, VITA65 white paper 11.2.9 10-slot backplane frame, VITA65 white paper 11.2.17 16-slot backplane frame.

[0016] Preferably, a peak current method or an average current method is used to achieve current sharing and redundant hot backup of the power board.

[0017] Preferably, the switch board is a CTC5160 Ethernet switch chip or a CTC7132 Ethernet switch chip.

[0018] Preferably, the functional boards are deployed according to the principle of even distribution and are used by the switch processing modules respectively.

[0019] Preferably, the data processing direction of the functional board is configured by a configuration command sent by the control bus.

[0020] In a second aspect, an embodiment of the present invention further provides a device for implementing redundant hot backup of a routing gateway based on a VPX architecture, and applies the above-mentioned method for implementing redundant hot backup of a routing gateway based on a VPX architecture to implement redundant hot backup of a routing gateway based on a VPX architecture. The device includes: a backplane frame, a power board, a main control board, and a function board, wherein:

[0021] The backplane frame has two switch boards, and the switch boards have externally connected Ethernet interfaces;

[0022] There are two power boards, which are deployed inside the VPX chassis;

[0023] The main control board and the switch board are deployed together to form a dual-control dual-switch architecture;

[0024] The data flow direction of the external relay interface of the functional board is configurable;

[0025] Enable the VRRP protocol on the externally connected Ethernet interface of the dual switch to implement redundant hot backup of the routing gateway.

[0026] Compared with the prior art, the present invention has at least the following beneficial effects:

[0027] The present invention utilizes the open chassis architecture of VPX, and through the selection of the backplane frame, the deployment of the power board, the deployment of the main control board, the deployment of the functional board and the deployment of VRRP, a single chassis device can form a redundant hot backup of the routing gateway, which has obvious cost advantages, power supply advantages and deployment space advantages.

[0028] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0029] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0032] Figure 1 A schematic diagram of implementing seamless switching of data streams using a redundant routing device provided in an embodiment of the present invention.

[0033] Figure 2 A schematic flow chart of a method for implementing redundant hot backup of routing gateways based on VPX architecture provided in an embodiment of the present invention.

[0034] Figure 3 VITA65 white paper 11.2.216-slot (14 functional boards + 2 switch boards) backplane framework schematic diagram provided for an embodiment of the present invention.

[0035] Figure 4 A schematic diagram of the deployment of a functional board provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0037] In the description of the present invention, it should be noted that: in some processes described in the specification and drawings of this application, multiple operations appearing in a specific order are included, but it should be clearly understood that these operations may not be performed in the order in which they appear in this document or may be performed in parallel. In addition, various serial numbers are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 2As shown, the present invention provides a method for implementing redundant hot backup of routing gateway based on VPX architecture, which mainly includes a combination of five method steps: "selection of backplane framework", "deployment of power board", "deployment of main control board", "deployment of function board" and "deployment of VRRP". Specifically:

[0040] 1. Selection of backplane frame: The basis for selection is a backplane frame with dual data switching boards and the switching boards have external Ethernet interfaces. Among the 3U and 6U backplane frames, 6 meet the requirements, namely: VITA65 white paper 11.2.2 16-slot backplane frame, VITA65 white paper 11.2.3 20-slot backplane frame, VITA65 white paper 11.2.6 10-slot backplane frame, VITA65 white paper 11.2.7 10-slot backplane frame, VITA65 white paper 11.2.9 10-slot backplane frame, VITA65 white paper 11.2.17 16-slot backplane frame.

[0041] 2. Deployment of power supply boards: Deploy two power supply boards and implement current balancing and redundant backup of the power supply boards so that when a single power supply board fails, the remaining power supply boards can bear the power supply needs of the entire chassis, avoiding single point failures in power supply.

[0042] 3. Deployment of the main control board: merge the main control board into the switch board slot to form a dual-master dual-switch architecture, thereby logically forming a dual-router entity architecture to avoid single point failures at the routing gateway.

[0043] 4. Deployment of functional boards: The data flow of the external relay interface of the functional board is configurable, forming the ability of dual switching to achieve external communication.

[0044] 5. VRRP deployment: Enable the VRRP protocol on the external Ethernet interface of the dual switch to achieve active-standby hot backup and switching in case of failure.

[0045] Through the above scheme, the present invention uses the characteristics of the VPX architecture to achieve that a single chassis device can form a redundant hot backup for the routing gateway.

[0046] The specific implementation manner and working principle of the method of the present invention are described in detail below:

[0047] 1. Selection of backplane frame:

[0048] At present, the VITA65 white paper stipulates 18 types of backplane frames included in a 3U chassis and 19 types of backplane frames in a 6U chassis. In the embodiment of the present invention, in order to achieve redundant hot backup of the router gateway, the selection of the backplane frame must meet two conditions. Among them:

[0049] Condition 1 is that there must be a dual-switch backplane frame. The switch board is the functional entity that performs the router gateway. In order to form active and standby hot backup, having two switch boards is a basic condition.

[0050] Condition 2 is that the switch board must have an external Ethernet interface connection. In order to use VRRP to achieve active-standby hot backup, it is necessary to run the protocol on the external Ethernet port of the switch board (the interface is connected to the data communication terminal) so that the active and standby switch boards can communicate VRRP messages through the interface.

[0051] The VITA65 white paper specifies a total of 37 types of backplane frames. In the embodiment of the present invention, there are 6 types of backplane frames for 6U chassis that meet the above two conditions at the same time, namely: VITA65 white paper 11.2.2 16-slot (14 functional boards + 2 switch boards) backplane frame, VITA65 white paper 11.2.3 20-slot (16 functional boards + 2 switch boards) backplane frame, VITA65 white paper 11.2.4 30-slot (16 functional boards + 2 switch boards) backplane frame, VITA65 white paper 11.2.5 40-slot (16 functional boards + 2 switch boards) backplane frame, .2.6 10-slot (8 function boards + 2 switch boards) backplane frame, VITA65 white paper 11.2.7 10-slot (8 function boards + 2 switch boards) backplane frame, VITA65 white paper 11.2.9 10-slot (10 function boards + 2 switch boards) backplane frame, VITA65 white paper 11.2.17 16-slot (14 function boards + 2 switch boards) backplane frame.

[0052] As an example, Figure 3 The VITA65 white paper 11.2.216-slot (14 functional boards + 2 switch boards) backplane framework is shown.

[0053] 2. Deployment of power board:

[0054] In the embodiment of the present invention, two power boards need to be deployed in the VPX chassis, and current sharing (load balancing) and redundant hot backup of the power boards are implemented, so that when a single power board fails, the remaining power boards can bear the power supply demand of the entire chassis. This can avoid the problem of the chassis being unable to power on due to a single power board failure.

[0055] There are generally four methods for current sharing of power boards: output impedance method, master-slave setting method, peak current method, and average current method. Among them:

[0056] The output voltage variation of the output impedance method is relatively large, and it is not suitable for boards with voltage stabilization accuracy in VPX. The master-slave setting method must specify the main module, which is generally the main control board. If the main control board fails, the current sharing will fail and the requirements of redundant hot backup will not be met. The peak current method is to select the main module from all parallel modules, and the currents of the remaining modules are close to this module to reach the main module current. This method can achieve redundant hot backup, but the current sharing accuracy is not high. The average current method calculates the average current (total load current divided by the number of modules). If the output current of the output circuit detection module is greater than the average current, the output voltage of the module is lowered, otherwise the output voltage is increased, so that the output current of each power module is consistent, that is, current sharing is achieved. If a power board fails, its output current becomes 0, resulting in an average current that is less than the calculated mean. The remaining power boards must increase the output voltage and current to reach the average current, thereby achieving redundant hot backup. Therefore, this embodiment preferably uses the average current method to achieve current sharing of the power board.

[0057] In the embodiment of the present invention, both power supply boards need to occupy the slots of the functional boards. Among the six types of backplane frames selected for use, the minimum number of functional board slots is 8. Therefore, the conditions for deploying two power supply boards to achieve current sharing and redundant hot backup are fully met.

[0058] 3. Deployment of the main control board:

[0059] Generally, a main control board is deployed in the VPX chassis, occupying a functional board slot. Its main function is to serve as the main device for chassis management and control, and it is also the functional entity that controls the data transmission of the switch board.

[0060] In the embodiment of the present invention, in order to realize the active-standby hot backup, two routing calculation functional entities are required, that is, two main control boards are required to control different switch boards respectively. A more economical implementation method is to combine the main control board and the switch board into one, which not only saves slot space, but also realizes the shortest routing of the control bus of the main control board and the switch board. The switch chips CTC5160 and CTC7132 and the embedded CPU Loongson series can be selected, all of which can be deployed on the same VPX front board.

[0061] 4. Deployment of functional boards:

[0062] The router gateway consists of three parts: a routing calculation unit, a data exchange unit, and an interface unit. The VPX main control board completes the routing calculation, the switch board completes the data exchange, and the function board completes the interface adaptation. The main control board and the switch board are replaced by synthetically deployed switch boards. The deployment of the function board is based on a backplane frame of 8 function boards + 2 switch boards as an example. After 2 of the 8 function board slots are occupied by power boards, 6 function board slots are left for use. In this embodiment, the deployment of the function boards can be distributed evenly for use by the switching processing modules. Figure 4 As shown, although the internal bus connects the switching processing module and all functional unit processing modules together, after the dual switching hot backup mode is selected, the data of slots 1 and 2 are forwarded by switching processing module 1, and the data of slots 7 and 8 are forwarded by switching processing module 2.

[0063] In the embodiment of the present invention, the data processing direction of the function board can be configured by a configuration command sent by the control bus.

[0064] 5. VRRP deployment:

[0065] VRRP is a key protocol for implementing active / standby hot backup. Figure 4 The following figure describes the deployment and application of VRRP in the VPX chassis.

[0066] First, follow Figure 4 The external Ethernet interfaces of the VPX chassis switching processing module 1 and the switching processing module 2 are connected to the Ethernet switch, and the PC is also connected to the Ethernet switch.

[0067] Secondly, configure the IP address of each port, and configure the external Ethernet interface of the switching processing module 1 and the switching processing module 2 to two different addresses of the same network segment, for example, the external Ethernet interface of the switching processing module 1 is configured to 10.10.10.2, with a mask of 24 bits, and the external Ethernet interface of the switching processing module 2 is configured to 10.10.10.3, with a mask of 24 bits. Configure the IP address of the PC to 10.10.10.254, with a mask of 24 bits. At this time, the PC can ping the external Ethernet interface addresses of the two switching processing modules.

[0068] Finally, the VRRP protocol is configured on the external Ethernet interfaces of the switching processing module 1 and the switching processing module 2, and the virtual IP address is specified as 10.10.10.1, the VRRP virtual group number is 1, and the gateway IP address of the PC is configured as 10.10.10.1.

[0069] After the above configuration is completed, the dual-switch hot backup function in the VPX chassis is started.

[0070] From the description of the above embodiments, those skilled in the art can know that the present invention provides a method for implementing redundant hot backup of routing gateways based on VPX architecture, which has the following advantages:

[0071] The present invention utilizes the open chassis architecture of VPX to realize redundant hot backup of routing gateways with a single chassis device through the selection of a backplane frame, the deployment of power boards, the deployment of main control boards, the deployment of functional boards and the deployment of VRRP. The present invention utilizes the dual power supplies, dual switches, multiple slots and bus technologies of a single device in the VPX architecture, combined with a combination of VRRP protocols, to realize redundant hot backup of data gateways of a single device, without the need for twice as many router gateway devices as in the traditional method, and has obvious cost advantages, power supply advantages and deployment space advantages.

[0072] Furthermore, the present invention also provides a device for implementing redundant hot backup of routing gateway based on VPX architecture, which is applied to a method for implementing redundant hot backup of routing gateway based on VPX architecture in the above embodiment to implement redundant hot backup of routing gateway. The device mainly includes: a backplane frame, a power board, a main control board and a function board, wherein:

[0073] The backplane frame has two switch boards, and the switch boards have externally connected Ethernet interfaces;

[0074] There are two power boards, which are deployed inside the VPX chassis;

[0075] The main control board and the switch board are deployed together to form a dual-control dual-switch architecture;

[0076] The data flow direction of the external relay interface of the functional board can be configured, so that both dual switches can communicate with the outside world.

[0077] Enable the VRRP protocol on the externally connected Ethernet interface of the dual switch to implement redundant hot backup of the routing gateway.

[0078] The device provided in the embodiment of the present invention has the same implementation principle and technical effects as those in the aforementioned method embodiment. For the sake of brief description, for matters not mentioned in the device embodiment, reference can be made to the corresponding contents in the aforementioned method embodiment, which will not be repeated here.

[0079] It should be noted that the word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The invention can be implemented by means of hardware comprising several distinct components, and by means of a suitably programmed computer.

[0080] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0081] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for implementing redundant hot backup of routing gateways based on VPX architecture. It is characterized in that The method includes: Select a backplane frame with dual switch cards and the switch cards have external Ethernet interfaces; Deploy two power supply cards in the VPX chassis; Combine the main control board and the switch board to form a dual-control dual-switch architecture; Deploy configurable function boards for data flow to external relay interfaces; Enable the VRRP protocol on the externally connected Ethernet interface of the dual switch to implement redundant hot backup of the routing gateway.

2. According to claim 1, a method for implementing redundant hot backup of routing gateways based on VPX architecture, It is characterized in that The backplane frame includes: VITA65 white paper 11.2.2 16-slot backplane frame, VITA65 white paper 11.2.3 20-slot backplane frame, VITA65 white paper 11.2.6 10-slot backplane frame, VITA65 white paper 11.2.7 10-slot backplane frame, VITA65 white paper 11.2.9 10-slot backplane frame, and VITA65 white paper 11.2.17 16-slot backplane frame.

3. According to the method for implementing redundant hot backup of routing gateway based on VPX architecture according to claim 1, It is characterized in that After the power board is deployed, the peak current method or average current method is used to achieve current sharing and redundant hot backup of the power board.

4. According to the method for implementing redundant hot backup of routing gateway based on VPX architecture according to claim 1, It is characterized in that The switch board is a CTC5160 Ethernet switch chip or a CTC7132 Ethernet switch chip.

5. According to the method for implementing redundant hot backup of routing gateway based on VPX architecture according to claim 1, It is characterized in that The functional boards are deployed according to the principle of even distribution for use by the switch processing modules.

6. A method for implementing redundant hot backup of routing gateways based on VPX architecture according to claim 5, It is characterized in that The data processing direction of the function board is configured by the configuration command sent from the control bus.

7. A device for implementing redundant hot backup of routing gateway based on VPX architecture, It is characterized in that The device includes: a backplane frame, a power board, a main control board and a function board, wherein: The backplane frame has two switch boards, and the switch boards have externally connected Ethernet interfaces; There are two power boards, which are deployed inside the VPX chassis; The main control board and the switch board are deployed together to form a dual-control dual-switch architecture; The data flow direction of the external relay interface of the functional board can be configured, so that both dual switches can communicate with the outside world. Enable the VRRP protocol on the externally connected Ethernet interface of the dual switch to implement redundant hot backup of the routing gateway.

8. The device for implementing redundant hot backup of routing gateway based on VPX architecture according to claim 7, It is characterized in that The selection of backplane frames includes: VITA65 white paper 11.2.2 16-slot backplane frame, VITA65 white paper 11.2.3 20-slot backplane frame, VITA65 white paper 11.2.6 10-slot backplane frame, VITA65 white paper 11.2.7 10-slot backplane frame, VITA65 white paper 11.2.9 10-slot backplane frame, VITA65 white paper 11.2.17 16-slot backplane frame.

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