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WO2018137252A1 - Procédé et dispositif d'émission de route - Google Patents

Procédé et dispositif d'émission de route Download PDF

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Publication number
WO2018137252A1
WO2018137252A1 PCT/CN2017/072778 CN2017072778W WO2018137252A1 WO 2018137252 A1 WO2018137252 A1 WO 2018137252A1 CN 2017072778 W CN2017072778 W CN 2017072778W WO 2018137252 A1 WO2018137252 A1 WO 2018137252A1
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WO
WIPO (PCT)
Prior art keywords
routing
network device
routing protocol
protocol process
unit
Prior art date
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Ceased
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PCT/CN2017/072778
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English (en)
Chinese (zh)
Inventor
蔡永生
王晓凯
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201780084706.2A priority Critical patent/CN110226307B/zh
Priority to PCT/CN2017/072778 priority patent/WO2018137252A1/fr
Publication of WO2018137252A1 publication Critical patent/WO2018137252A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/24—Multipath

Definitions

  • the embodiments of the present invention relate to the field of communications, and in particular, to a method and an apparatus for routing a route.
  • Network Function Virtualization technology carries many functions by using general-purpose hardware (for example, hardware supporting the x86 general-purpose computer series standard released by Intel Corporation of the United States) and virtualization technology.
  • Software processing For example, software processing that carries the functionality of a traditional dedicated hardware network device is referred to as a virtual network device.
  • NFV technology relies on hardware and software decoupling and functional abstraction, so that network device functions no longer depend on dedicated hardware, which not only reduces the cost of expensive dedicated hardware network equipment, but also enables flexible and flexible sharing of resources, enabling rapid development and deployment of new services. .
  • the Broadband Network Gateway (BNG) is used to provide authorized access, billing, traffic control, and data forwarding functions for network users.
  • the Broadband Remote Access Server (BRAS) is a BNG.
  • BRAS Broadband Remote Access Server
  • vBNG virtual broadband network service gateway
  • a virtual broadband remote access server (English: virtual Broadband Remote Access Server, vBRAS for short) is a type of vBNG.
  • vBNG can be composed of a virtual machine (English: virtual machine, VM for short).
  • the vBNG includes a forwarding VM.
  • the forwarding VM is used to implement the data forwarding function of the network user in the vBNG.
  • at least two forwarding VMs are included in the vBNG, there is data forwarding forwarding across the VM, which reduces the forwarding performance of the vBNG.
  • the method and device for routing a route provided by the embodiment of the present invention solve the problem of low performance caused by forwarding data packets across the board in the virtual network device, and help improve the processing performance of the virtual network device.
  • a method for route advertisement is provided, which is applied to a first network device, where the first network device is a virtual broadband network service gateway, and the first network device and the second network device are connected by two links.
  • the first network device includes at least two forwarding units, and the at least two forwarding units include a first forwarding unit, and the method includes:
  • the first network device creates at least two routing protocol processes, where one routing protocol process is associated with one forwarding unit, and the at least two routing protocol processes include a first routing protocol process; the first network device will be the first a routing protocol process is associated with the first forwarding unit; the first network device receives, from the first interface of the first forwarding unit, routing information associated with the first routing protocol process from the first The second interface of the forwarding unit is distributed to the second network device.
  • the route received by the forwarding unit is only advertised from the interface of the forwarding unit to the second network device on the network side, thereby ensuring that the second network device can only learn.
  • the route advertised from the interface of the forwarding unit avoids cross-board forwarding and improves the forwarding performance of the vBNG.
  • the first network device associating the first routing protocol process with the first forwarding unit includes: the first network device indicating the first forwarding The unit sets the first tag from the routing information received by the first interface, and introduces routing information with the first tag into the first routing protocol process for publishing.
  • the first information of the routing information setting includes: the first network device instructing, by the configuration command, that the first forwarding unit sets the first label from the routing information received by the first interface.
  • the routing information to be imported into the first routing protocol process can be selected according to the needs of the user or the network administrator, and the routing information to be imported can be flexibly controlled according to the needs of the user or the network administrator.
  • the routing information with the first label is imported to the first route
  • the issuing of the protocol in the process includes: the first network device creating a routing policy, the routing policy indicating that the routing policy is satisfied if the marking of the routing information is the first marking; the first network device will satisfy the The routing information of the routing policy is introduced into the first routing protocol process for publishing.
  • the first network device by using the routing information that meets the routing policy, to the first The advertised in the routing protocol process includes: the first network device, by using a configuration command, to import the routing information that meets the routing policy into the first routing protocol process for publishing.
  • routing protocol process By creating a routing policy to import routing information that meets the matching requirements into the corresponding routing protocol process, you can select which routing protocol process to import based on the needs of the user or network administrator, and implement the requirements according to the needs of the user or network administrator. Flexible control of the routing protocol process to be introduced, and configuration management is more flexible.
  • the at least two forwarding units further include a second forwarding The unit, the at least two routing protocol processes further include a second routing protocol process, the method further comprising: the first network device associating the second routing protocol process with the second forwarding unit; A network device advertises routing information associated with the second routing protocol process received from the third interface of the second forwarding unit from the fourth interface of the second forwarding unit.
  • a vBNG device for route publishing is provided, the vBNG device being configured to perform the method of the first aspect or any possible implementation of the first aspect.
  • the vBNG device comprises means for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • the present invention provides a route-published vBNG device, where the route-published vBNG device includes: a memory, a transceiver, and a processor respectively connected to the memory and the transceiver.
  • the memory is for storing a set of program instructions, the processor for invoking the program instructions stored by the memory to run a plurality of virtual machines to perform the method of the first aspect or any possible implementation of the first aspect.
  • the present invention provides a computer readable storage medium having instructions stored therein that, when run on a computer, cause the computer to perform any of the first aspect or the first aspect The method in the way of implementation.
  • FIG. 1a is a schematic diagram of a network according to an embodiment of the present invention.
  • FIG. 1b is a schematic diagram of a network in an embodiment of the present invention.
  • FIG. 2 is a simplified schematic diagram of a route publishing method in an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a vBNG in an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of another vBNG in the embodiment of the present invention.
  • the network architecture and the service scenario described in the embodiments of the present invention are used to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention.
  • the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.
  • the vBNG and the network device 2 are interconnected by at least two links (eg, link 1 and link 2), and the vBNG receives user-side routing information from the network device 3 through the interface 1, the routing information.
  • the IP address information of the user equipment 1 may be an IP address such as 10.1.1.1, or an IP address prefix information, such as 10.1.1.0, or a subnet mask for the IP address, such as 10.1.1.1. /twenty four.
  • the virtual network device runs an Interior Gateway Protocol (IGP) routing protocol process.
  • IGP can be an Open Shortest Path First (OSPF), an intermediate system to an intermediate system. :Intermediate System-to-Intermediate System, IS-IS).
  • OSPF Open Shortest Path First
  • IS-IS Intermediate System-to-Intermediate System
  • the vBNG After receiving the routing information from the user side, the vBNG advertises the routing information from interface 2 and interface 4 through the IGP process.
  • the network device 2 receives the routing information from the interface 5 and the interface 6, respectively, and generates two forwarding entries.
  • the destination IP address information of the two forwarding entries is the IP address information of the user equipment 1, and the outgoing interfaces are respectively interfaces. 5.
  • Interface 6 For example, when the cost of the link 2 is lower than the cost of the link 1, the forwarding entry of the interface 6 is selected, and the data packet destined for the user equipment 1 is forwarded.
  • the vBNG After receiving the data packet destined for the user equipment 1 from the interface 4, the vBNG needs to go through the switching network, and the data packet is sent from the forwarding unit 2 to the forwarding unit 1, and the data packet is sent from the interface 1 of the forwarding unit 1. Send it out.
  • the forwarding that needs to be performed across the switching network may be referred to as cross-board forwarding, cross-forwarding unit forwarding, or cross-VM forwarding.
  • the corresponding data flow may be referred to as cross-board forwarding data flow and cross-forward unit forwarding number.
  • the data stream is forwarded according to the flow or across the VM.
  • vBNG is handled by software instead of hardware (eg, chip) processing, performance is relatively poor.
  • performance is relatively poor.
  • the forwarding performance of the vBNG is further degraded.
  • the switching network may be a hardware switch or a virtual switch of software.
  • the network device 2 may be a network device of physical hardware, such as a router or a switch, or may be a virtual network device based on NFV technology, such as a virtual router or a virtual switch.
  • User equipment (English: User Equipment, UE) may include various handheld devices with wireless communication functions, in-vehicle devices, wearable devices, computer devices or other processing devices connected to wireless modems, and various forms of user equipment, mobile Taiwan (English: Mobile Station, MS), terminal (English: terminal), terminal equipment (English: Terminal Equipment, TE) and so on.
  • the devices mentioned above are collectively referred to as user equipments or UEs.
  • FIG. 2 is a schematic flowchart of a method for route advertisement according to an embodiment of the present invention.
  • the method is applied to a vBNG (as a first network device), the first network device and the second network device are connected by two links, the first network device comprising at least two forwarding units, at least one control unit, at least A switching unit (also called a switching network).
  • the at least two forwarding units include a first forwarding unit and a second forwarding unit.
  • the IGP protocol is established between the first network device and the second network device, and an IGP neighbor relationship is established, and is in an IGP domain.
  • the solution provided by the embodiment of the present invention includes part 201, part 302 and part 203, which are respectively described below.
  • the first network device creates at least two routing protocol processes, wherein one routing protocol process is associated with one forwarding unit, and the at least two routing protocol processes include a first routing protocol process and a second routing protocol process.
  • the routing protocol process can be an IGP routing protocol process such as an OSPF process or an IS-IS process.
  • a third routing protocol process is created on the second network device, and an IGP neighbor relationship is established between the first routing protocol process and the second routing protocol process on the first network device.
  • a third routing protocol process and a fourth routing protocol process may be created on the second network device, where the third routing protocol process may establish an IGP with the first routing protocol process on the first network device.
  • the neighbor relationship, the fourth routing protocol process may establish an IGP neighbor relationship with the second routing protocol process on the first network device.
  • the first network device associates the first routing protocol process with the first forwarding unit, and associates the second routing protocol process with the second forwarding unit.
  • Associating the first routing protocol process with the first forwarding unit is understood to be that the first routing protocol process is only responsible for receiving an interface of the first forwarding unit that has not been added to the first routing protocol process.
  • the obtained routing information is sent out (also called an advertisement) from an interface of the first forwarding unit that is added to the first routing protocol process.
  • the control unit of the vBNG creates the first routing protocol process (such as ospf process 1), and the interface 2 (which is the interface connected to the network side network device) joins the ospf1 (specifically, for example, Add the IP address configured on interface 2 to ospf1, or enable ospf on interface 2 to join the ospf process.
  • the vBNG receives the packet from the user device 1 from the interface 1 (which is not connected to the ospf process 1), and obtains the IP address information of the user device 1 and uses it as the routing information to the ospf process. .
  • the routing information of the user equipment 1 is advertised from the interface 2 to the network device 2 through the ospf process 1.
  • the interface 2 is a network side interface
  • the interface 1 is a user side interface
  • the interface 2 may have multiple
  • the interface 1 may also have multiple, here only They are illustrated by an interface, but they are not limited.
  • the first network device may associate the first routing protocol process with the first forwarding unit in the following two manners.
  • the first network device directly introduces the routing information of the user terminal side received from the first interface of the first forwarding unit into the first routing protocol process, and the first routing protocol process And routing the routing information from the second interface of the first forwarding unit to the second network device.
  • the method is directly encoded and implemented in the software in the product development process of the first network device, and does not require subsequent manual configuration operations to participate in the implementation.
  • Manner 2 The first network device instructs the first forwarding unit to set a first flag from routing information received from the first interface, and import routing information with the first label into the first route Released during the protocol process.
  • setting the first flag may be implemented on the first network device by using a configuration command.
  • the following command line indicates that the user network route (English: user network route, unr) received on slot 1 (ie, forwarding unit 1) is marked (English: tag) 100.
  • routing information that needs to be introduced into the first routing protocol process can be selected according to the needs of the user or the network administrator (for example, all or part of the user network side routes received on the forwarding unit 1 can be routed.
  • the introduction is performed, of course, if it is not set, it may not be introduced.
  • the routing information to be imported is flexibly controlled according to the needs of the user or the network administrator.
  • the first network device creates a routing policy, where the routing policy indicates that the routing policy is satisfied if the marking of one routing information is the first marking.
  • the first network device introduces the routing information that meets the routing policy into the first routing protocol process for publishing.
  • creating a routing policy may be implemented by using a configuration command on the first network device.
  • routing protocol process By creating a routing policy to import routing information that meets the matching requirements into the corresponding routing protocol process, you can select which routing protocol process to import based on the needs of the user or network administrator, and implement the requirements according to the needs of the user or network administrator. Flexible control of the routing protocol process to be introduced, and configuration management is more flexible.
  • the method of associating the second routing protocol with the second forwarding unit is the same as the method for associating the first routing protocol with the first forwarding unit. For brevity, details are not described herein again.
  • the first network device receives, from the first interface of the first forwarding unit, routing information associated with the first routing protocol process from a second interface of the first forwarding unit The second network device is released, and the routing information includes IP address information of the user equipment.
  • the network device 1 will receive the routing information of the user equipment 1 from the interface 1 of the forwarding unit 1 (the routing information of the user equipment 1 has been introduced into the first routing protocol process by the method of part 202) From forwarding
  • the interface 2 of the unit 1 is issued to the network device 2.
  • the network device 2 After receiving the routing information of the user equipment 1 from the interface 5, the network device 2 runs a third routing protocol process to generate a forwarding entry destined for the user equipment 1, and the destination IP address information of the forwarding entry is the IP address of the user equipment 1.
  • Information, the outgoing interface is interface 5.
  • the network device 2 forwards the data packet destined for the user equipment 1, only the interface 5 is used; then, through the link 1, from the interface 2 of the vBNG, the forwarding unit 1 of the vBNG is accessed, and then the interface 1 of the forwarding unit 1 is forwarded.
  • the data packet is sent and received on the same forwarding unit 1, avoiding cross-board forwarding.
  • the route received by the first forwarding unit is only advertised from the interface of the first forwarding unit to the second network device on the network side, thereby ensuring the first The network device can only learn the routes advertised by the interface from the first forwarding unit, thereby avoiding cross-board forwarding and improving the forwarding performance of the vBNG.
  • the first network device advertises the routing information associated with the second routing protocol process received from the third interface of the second forwarding unit from the fourth interface of the second forwarding unit.
  • the network device 1 will receive the routing information of the user equipment 2 received from the interface 3 of the forwarding unit 2 (the routing information of the user equipment 2 has been introduced to the second through the method of part 202).
  • the routing protocol process is issued from the interface 4 of the forwarding unit 2 to the network device 2.
  • the network device 2 After receiving the routing information of the user equipment 2 from the interface 6, the network device 2 runs the third routing protocol process (as described in section 201 above, when the network device 2 runs a routing protocol process) or the fourth The routing protocol process (as described in section 201 above, when the network device 2 runs two routing protocol processes) generates a forwarding entry destined for the user equipment 2, and the destination IP address information of the forwarding entry is the IP of the user equipment 2 Address information, the outbound interface is interface 6. Therefore, as shown in FIG.
  • each forwarding unit By associating each forwarding unit with each routing protocol in a one-to-one correspondence, the route received by each forwarding unit is only advertised from the interface of the forwarding unit to the second network device on the network side, thereby ensuring the second network.
  • the device can only learn the routes advertised from the interface of the forwarding unit, thus avoiding cross-board forwarding and improving the forwarding performance of the vBNG.
  • FIG. 3 is a schematic structural diagram of a vBNG device according to an embodiment of the present invention.
  • the vBNG device 300 includes a creation unit 302, an association unit 304, and a transmission unit 306.
  • the creating unit 302 is configured to create at least two routing protocol processes, where one routing protocol process is associated with one forwarding unit, and the at least two routing protocol processes include a first routing protocol process.
  • the association unit 304 is configured to associate the first routing protocol process with the first forwarding unit.
  • the association unit 304 is configured to instruct the first forwarding unit to set a first flag from the routing information received by the first interface, and import routing information with the first tag into the Released in the first routing protocol process.
  • the associating unit 304 may perform the above-described function of setting a flag by a configuration command.
  • the associating unit 304 the routing information that has the first label is imported into the first routing protocol process for publishing, specifically includes:
  • the association unit 304 is further configured to instruct the creating unit 302 to create a routing policy, where the routing policy indicates If the marking of a routing information is the first marking, the routing policy is satisfied.
  • the association unit 304 is further configured to import the routing information that meets the routing policy into the first routing protocol process for publishing.
  • the sending unit 306 is configured to receive routing information associated with the first routing protocol process from the first interface of the first forwarding unit from the second interface of the first forwarding unit to the second network The device is released.
  • the vBNG device 300 of the embodiment of the present invention may implement various implementation functions and steps in the vBNG device (ie, the first network device) in the embodiment corresponding to the foregoing FIG. 1a to FIG. 2 .
  • the vBNG device ie, the first network device
  • FIG. 1a to FIG. 2 For brevity, details are not described herein again.
  • FIG. 4 is a block diagram showing the hardware structure of a computer device in an embodiment of the present invention.
  • the computer device 400 is for generating and running a virtual network device.
  • the virtual network device 400 is used to implement the function of the BNG, and is a vBNG device.
  • the computer device 400 includes a memory 401, a transceiver 402, and a processor 403 coupled to the memory 401 and the transceiver 402, respectively.
  • the memory 401 is configured to store a set of program instructions
  • the processor 403 is configured to invoke program instructions stored by the memory 401 to run a plurality of virtual machines to implement a plurality of units in the virtual network device.
  • a virtual machine is a complete computer system that runs through a software and has full hardware system functionality running in a fully isolated environment.
  • the virtual machine is deployed on a hardware device (for example, a physical server).
  • a hardware device for example, a physical server.
  • Those skilled in the art can use the NFV technology to virtualize a plurality of gateway devices having the above functions on a general physical server by reading the present application. I will not repeat them here.
  • the virtual machine running in the processor 403 includes a forwarding unit 4031, a forwarding unit 4032, and a control unit 4033.
  • the control unit 4033 is a virtual machine for implementing the control management function
  • the forwarding unit 4031 and the forwarding unit 4032 are virtual machines for implementing the data forwarding function.
  • the control unit 4033 is configured to create at least two routing protocol processes, where one routing protocol process is associated with one forwarding unit, and the at least two routing protocol processes include a first routing protocol process.
  • the control unit 4033 is further configured to associate the first routing protocol process with the first forwarding unit.
  • control unit 4033 is configured to instruct the first forwarding unit to set a first flag from the routing information received by the first interface, and import routing information with the first tag into the first Released in a routing protocol process.
  • control unit 403 can complete the above-described function of setting a flag by a configuration command.
  • the initiating, by the control unit 4033, the routing information that has the first label to be sent to the first routing protocol process for publishing includes:
  • the control unit 4033 is further configured to create a routing policy, where the routing policy indicates that the routing policy is satisfied if the marking of a piece of routing information is the first marking.
  • the control unit 4033 is further configured to import the routing information that meets the routing policy into the first routing protocol process for publishing.
  • the transceiver 4032 is configured to receive, from the first interface of the first forwarding unit, the routing information associated with the first routing protocol process from the second interface of the first forwarding unit to the second network. The device is released.
  • the vBNG device 400 of the embodiment of the present invention may implement various implementation functions and steps in the vBNG device (ie, the first network device) in the foregoing embodiment corresponding to FIG. 1a to FIG. 2 .
  • the control unit 4033 is used to perform All operations of the creating unit 302 and the associating unit 304 of the vBNG device are performed in FIG. 3, and the transceiver 402 is configured to perform all operations of the transmitting unit 306 of the vBNG device of FIG. For the sake of brevity, it will not be repeated here.
  • the virtual machine running in the processor 403 further includes a switching unit, and the switching unit may be a VM that performs a switch function. It should be noted that the forwarding units in the vBNG device 400 can also exchange data packets through a hardware physical switch.
  • the vBNG device in the embodiment of the present invention includes at least two forwarding units and at least one control unit.
  • the forwarding unit 4031 and the forwarding unit 4032, and the control unit 4033 are merely examples, and are not limiting.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention is essentially The portion contributing to the prior art or the portion of the technical solution may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device (may be A personal computer, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

La présente invention concerne un procédé et un dispositif d'émission de route, utilisés pour un premier dispositif de réseau. Le premier dispositif de réseau est une passerelle de service de réseau à large bande virtuelle. Le premier dispositif de réseau et un second dispositif de réseau sont connectés au moyen de deux liaisons. Le premier dispositif de réseau comprend au moins deux unités d'acheminement, lesdites deux unités d'acheminement ou plus comprenant une première unité d'acheminement. Dans le procédé, le premier dispositif de réseau crée au moins deux processus de protocole de routage. Un des processus de protocole de routage est corrélé à une unité d'acheminement, et les deux processus de protocole de routage ou plus comprennent un premier processus de protocole de routage. Le premier processus de protocole de routage est corrélé à la première unité d'acheminement par le premier dispositif de réseau. Le premier dispositif de réseau émet des informations de routage, qui sont reçues d'une première interface de la première unité d'acheminement, et sont corrélées avec le premier processus de protocole de routage, à destination du second dispositif de réseau via une seconde interface de la première unité d'acheminement. Le procédé et le dispositif permettent d'améliorer les performances d'acheminement du premier dispositif de réseau.
PCT/CN2017/072778 2017-01-26 2017-01-26 Procédé et dispositif d'émission de route Ceased WO2018137252A1 (fr)

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CN105554176A (zh) * 2015-12-29 2016-05-04 华为技术有限公司 发送报文的方法、装置和通信系统
CN105634956A (zh) * 2015-12-31 2016-06-01 华为技术有限公司 一种报文转发方法、装置和系统
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