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WO2009076841A1 - Procédé, système et dispositif pour obtenir les informations topologiques d'un itinéraire et établir le routage - Google Patents

Procédé, système et dispositif pour obtenir les informations topologiques d'un itinéraire et établir le routage Download PDF

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Publication number
WO2009076841A1
WO2009076841A1 PCT/CN2008/073267 CN2008073267W WO2009076841A1 WO 2009076841 A1 WO2009076841 A1 WO 2009076841A1 CN 2008073267 W CN2008073267 W CN 2008073267W WO 2009076841 A1 WO2009076841 A1 WO 2009076841A1
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WO
WIPO (PCT)
Prior art keywords
control management
router
management device
channel
jurisdiction
Prior art date
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Ceased
Application number
PCT/CN2008/073267
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English (en)
Chinese (zh)
Inventor
Xinping Wang
Enhui Liu
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2009076841A1 publication Critical patent/WO2009076841A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04L45/42—Centralised routing
    • 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
    • H04L45/02—Topology update or discovery
    • H04L45/03—Topology update or discovery by updating link state protocols

Definitions

  • the present invention relates to the field of packet network technologies, and in particular, to a method, system and device for obtaining routing topology information and establishing a route.
  • the telecommunication network has successfully completed the transition from analog technology to digital technology.
  • TDM Time-Division Multiplexing
  • ATM Asynchronous Transfer Mode
  • Packet technology is the representative of this transition, but due to technical difficulties and unsuccessful business operations, the second step of the telecommunications network has not been achieved.
  • IP IP Protocol
  • the Internet based on IP (IP Protocol) packet technology was extremely successful due to the application of Web technology. It quickly expanded into a global network that was able to compete with the telecom network, and then to telecommunications. Business extension. Therefore, the telecommunication network introduced IP packet technology and loaded all telecommunication services on the IP network, and it is expected to realize the transition from TDM technology to packet technology.
  • IP packet technology Nor can it assume the heavy responsibility of the transition of Telecommunication technology from TDM technology to packet technology.
  • HSAPN Hierarchical and Sequential Address Packet Network
  • the system includes at least one HSAPN network, a plurality of IP networks or ATM networks, and a FR (Frame Relay) network.
  • FR Framework Relay
  • the IP network is connected to the HSAPN network through ED devices; each HSAPN network also includes Include at least one address translation entity (ADT); all devices in the HSAPN network are equipped with an HSAPN address with the ED device, and all devices and ED devices in the IP network are assigned an IP address, a mapping between the IP address and the HSAPN address. Saved in the address mapping table in the ADT.
  • the hierarchical ordered address packet network HSAPN is a packet network used for telecommunication purposes. It is used to carry all existing telecommunication services, and can ensure that the telecommunication services it carries can provide the same quality of service as traditional telecommunication services. It can carry Internet services, provide the same capabilities as the existing Internet, support all existing Internet services that exist, and can be used to carry other services that may arise in the future.
  • the routing tables in the current HSAPN are all implemented by static manual configuration, which consumes a lot of labor, and the manual configuration of the routing table is complicated and error-prone; in addition, the prior art does not propose how to implement public telecommunication packet data. Management control of dynamic routing in the network.
  • an embodiment of the present invention provides a method and system for establishing a route.
  • the technical solution is as follows:
  • An embodiment of the present invention provides a method for establishing a route, including:
  • An embodiment of the present invention provides a system for establishing a route, including:
  • a router configured to establish a control management channel between the router and a control management device that governs the router; and send the link state advertisement information to the control management device by using the control management channel;
  • control management device configured to establish a control management channel between the device and a router in the jurisdiction; collect the link state advertisement information sent by the router by using the control management channel; and calculate the location according to the link state advertisement information Routing topology map of the jurisdiction;
  • the routing computing device is configured to calculate routing information of each router according to the routing topology map.
  • an embodiment of the present invention further provides a method and apparatus for acquiring routing topology information.
  • the technical solution is as follows:
  • the embodiment of the invention provides a method for obtaining routing topology information, including:
  • Controlling the collection channel between the control management device and the router in the area under the jurisdiction of the control management device The link state advertisement information sent by the router in the area under the jurisdiction of the control management device;
  • An embodiment of the present invention provides an apparatus for acquiring routing topology information, including:
  • An information receiving module configured to receive, by using a control management channel between the control management device and a router in a region under the jurisdiction of the control management device, link state advertisement information sent by a router corresponding to the jurisdiction region;
  • the topology map calculation module is configured to calculate routing topology information of the area under the control management device according to the link state advertisement information.
  • the embodiment of the present invention dynamically collects the link state advertisement information of each router through the control management channel by controlling the control management channel established between the management device and the routers in the jurisdiction area, and calculates the network topology, and calculates the routers according to the network topology.
  • the configuration of the routing table implements dynamic route calculation, control, and management, which avoids the problem of manual configuration of the routing table being complex and error-prone.
  • FIG. 1 is a schematic diagram of a reference model of a hierarchically ordered address packet network in the prior art
  • FIG. 2 is a flowchart of a method for establishing a route according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram of a network of a dynamic inband control management channel in a hierarchically ordered address packet network according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic diagram of a network of a dynamic outband control management channel in a hierarchically ordered address packet network according to Embodiment 1 of the present invention
  • FIG. 5 is a structural diagram of a system for establishing a route according to Embodiment 2 of the present invention
  • FIG. 6 is a system structural diagram of a control management device as a route calculation device in a second embodiment of the present invention
  • FIG. 7 is a system structure diagram of a router as a route calculation device in the second embodiment of the present invention
  • FIG. Example 3 is a flowchart of a method for obtaining routing topology information
  • FIG. 9 is a schematic structural diagram of an apparatus for acquiring routing topology information according to Embodiment 4 of the present invention. detailed description
  • An embodiment of the present invention provides a method for establishing a dynamic route.
  • HSAPN hierarchical ordered address packet network
  • CMDC Control Management Device On a hierarchical ordered address packet network (HSAPN), a CMDC Control Management Device, a control management device, and a CMD jurisdiction are established before the entire network is started.
  • Table The control management device is centralized control or a hierarchical hierarchical structure. Referring to FIG. 2, the following steps are specifically included:
  • Step 101 Establish a control management channel between the CMD and each HSAPN router in the area under the CMD.
  • the embodiments of the present invention provide the following two technical solutions to implement the establishment of a control management channel between the CMD and each HSAPN router in the jurisdiction:
  • a route to the CMD that governs each router can be manually configured on each HSAPN router.
  • the configured route is a one-way route from the router to the control management device.
  • the CMD route to each router can also be configured on the CMD and the HSAPN router it governs as needed, so that the route configured is a bidirectional route between the router and the control management device.
  • a unidirectional or bidirectional routing control management channel network is formed by using a data channel between each HSAPN router and a CMD that governs each HSAPN router to form a logical, in-band routing control, route calculation.
  • a schematic diagram of the control management channel network is shown in FIG.
  • Each HSAPN router has an out-of-band interface, such as an IP interface, an Ethernet interface, etc.
  • Each HSAPN router is connected to the CMD that governs the router through its respective out-of-band interface, thereby establishing various HSAPN routes.
  • the out-of-band routing control, route calculation, and route management channels between the CMD and the CMD that governs the router form an out-of-band control management channel network.
  • a schematic diagram of the control management channel network is shown in FIG.
  • each HSAPN router Before the entire HSAPN network is started, the initial configuration of each HSAPN router, such as the HSAPN address of the router, is implemented through the control management channel between each HSAPN router and CMD.
  • Step 102 The CMD collects link state advertisement information of each HSAPN router in the jurisdiction area through the control management channel.
  • the specific content of the link state advertisement information includes the HSAPN address of the router, the interface status of the router, the neighbor status information of the router, and the link status of the router.
  • the neighbor status information of the router can be obtained through static configuration or automatic discovery.
  • the CMD can collect link state advertisement information from each HSAPN router in the jurisdiction in the following three ways: 1. PUSH (Push;) mode: The CMD actively sends a command to collect link state advertisement information to the HSAPN router under its jurisdiction; After receiving the command, each HSAPN router sends link state advertisement information to the CMD that manages the router through the control management channel, and reports link state information.
  • the command for collecting link state advertisement information may be sent through a control management channel or a broadcast.
  • Each HSAPN router actively sends link state advertisement information to the CMD that governs the router through the control management channel, and reports link state information.
  • Hybrid mode It is a mixture of PUSH and PULL.
  • the PUSH mode is used to send the link state advertisement information to the CMD.
  • the PULL mode is used. Send link state advertisement information to the CMD to update the link state information of the HSAPN router in time.
  • Step 103 After receiving the link state advertisement information sent by all HSAPN routers in the area under the jurisdiction, the CMD calculates a routing topology map of the area under the CMD according to the link state advertisement information.
  • the method for calculating a routing topology map in the prior art may be used, and details are not described herein.
  • Step 104 Calculate a routing table of each HSAPN router according to the routing topology map.
  • each HSAPN router can be implemented through centralized calculation and distributed calculation:
  • CMD uses the HSAPN router to be delivered as the root, and uses an algorithm, such as the shortest path first algorithm, to calculate the routing table of the HSAPN router, and sends the routing table to the routing table.
  • an algorithm such as the shortest path first algorithm
  • Corresponding HSAPN router It can be delivered through the broadcast or control management channel. In the actual application process, it is recommended to use the control management channel.
  • CMD sends the calculated routing topology map to each HSAPN router in the jurisdiction area; after receiving the routing topology map, each HSAPN router uses itself as the root and uses an algorithm such as the shortest path first algorithm. Calculate the respective routing tables.
  • the routing topology map may be sent through a control management channel or a broadcast.
  • Step 105 Each HSAPN router forwards data packets according to its own routing table.
  • the in-band or out-band control management channel established between the CMD and each HSAPN router in the jurisdiction area, and the CMD-to-HSAPN router link state advertisement information are implemented by using the PUSH, the PULL, and the Hybrid.
  • the dynamic calculation and the unified calculation of the network topology implement the configuration of the routing table of each HSAPN router through centralized calculation or distributed calculation, which avoids the complicated and error-prone problem of manually configuring the routing table. Since HSAPN is a centralized control packet network, route calculation, control, and management are also centralized.
  • Example 2 Example 2
  • this embodiment provides a system for establishing a route, where the system includes: a router, configured to establish a control management channel between the router and a control management device that governs the router; and send link state advertisement information to the control management device by using the established control management channel;
  • control management device configured to establish a control management channel between the device and a router in the jurisdiction; collect the link state advertisement information sent by the router through the established control management channel; calculate the rule according to the received link state advertisement information Routing topology map of the area;
  • the routing computing device is configured to calculate a routing table of each router according to a routing topology calculated by the control management device.
  • the router specifically includes:
  • An in-band channel establishing module configured to configure a route between the router and the control management device by using a data channel, thereby establishing an in-band control management channel between the router and a control management device that governs the router;
  • the control management device specifically includes:
  • An in-band channel establishing module configured to configure a route between the control management device and the router under the jurisdiction, thereby establishing an in-band control management channel between the control management device and the managed router;
  • An information receiving module configured to receive, by using the control management channel, link state advertisement information sent by the managed router;
  • the topology map calculation module is configured to calculate a routing topology map of the area under the jurisdiction according to the link state advertisement information.
  • the router specifically includes:
  • An out-of-band channel establishing module is configured to connect to a control management device that governs the router through an out-of-band interface, thereby establishing an out-of-band control management channel between the router and a control management device that governs the router;
  • the information sending module is configured to send a link state advertisement message to the control management device by using the control management channel.
  • the control management device specifically includes:
  • An out-of-band channel establishing module for connecting to an out-of-band interface of the router under control to establish an in-band control management channel between the control management device and the managed router;
  • An information receiving module configured to receive, by using the control management channel, link state advertisement information sent by the managed router;
  • the topology map calculation module is configured to calculate a routing topology map of the area under the jurisdiction according to the link state advertisement information.
  • the router may send the link state advertisement information to the control management device.
  • the control management device specifically includes:
  • the information receiving module is configured to receive, by using the control management channel, link state advertisement information sent by the router.
  • the control management device may send a command to the router, and the router sends the link state advertisement information according to the command. Therefore, the control management device may further include: And a command sending module, configured to send, by using the control management channel or by broadcasting, a command for collecting link state advertisement information to a router under its jurisdiction.
  • the router may include:
  • the command receiving module is configured to receive a command for collecting link state advertisement information sent by a control management device of the router.
  • the routing computing device may be a control management device, and the control management device further includes:
  • a routing table calculation module configured to calculate, according to the calculated routing topology diagram, a routing table of the router by using a router in the area under the jurisdiction as a root;
  • a routing table sending module configured to send the routing table to a corresponding router
  • the router further includes:
  • the routing table receiving module is configured to receive a routing table sent by a control management device that governs the router.
  • the routing computing device may be a router, and the router further includes: a routing topology receiving module, configured to receive a routing topology map calculated by the control management device that governs the router;
  • the calculation module is configured to calculate a routing table according to the routing topology map, and the control management device further includes:
  • a topology map sending module is used to send a road topology map.
  • the in-band or out-band control management channel established between the CMD and each HSAPN router in the jurisdiction area, and the CMD-to-HSAPN router link state advertisement information are implemented by using the PUSH, the PULL, and the Hybrid.
  • the dynamic calculation and the unified calculation of the network topology implement the configuration of the routing table of each HSAPN router through centralized calculation or distributed calculation, which avoids the complicated and error-prone problem of manually configuring the routing table. Since HSAPN is a centralized control packet network, route calculation, control, and management are also centralized.
  • the embodiment of the invention further provides a method for obtaining routing topology information, as shown in FIG. 8, which includes:
  • Step 301 Collect, by using a control management channel between the control management device and a router in the area under the jurisdiction of the control management device, link state notification information sent by a router in the area under the control management device;
  • Step 302 Obtain routing topology information of the area under the control management device according to the link state advertisement information.
  • the routing topology information is specifically a routing topology diagram, and may be used to calculate and obtain a routing table for the router in the area under the jurisdiction of the control management device, and establish a route.
  • the method further includes: establishing, by the control management device, the corresponding control management channel between each of the routers in the area under the jurisdiction of the control management device, where the embodiment may be adopted and the embodiment The same method is used to establish the control management channel, which is not described here.
  • step 301 the following three manners may be used to collect link state advertisement information: 1. PUSH mode: actively send the link state advertisement information to the HSAPN router in the area under the jurisdiction of the control management device. Commanding, and receiving the link state advertisement information returned by the HSAPN router through the corresponding control management channel after receiving the collection command; 2. PULL (pull down) mode: receiving the control of the router in the area under the jurisdiction of the control management device The link state advertisement information that the management channel actively returns; 3. Hybrid mode: It is a mixture of PUSH and PULL.
  • the PUSH mode is used to collect the link state advertisement information sent by the HSAPN router in the area under the control management device; when a single point of failure occurs (a HSAPN router fails)
  • the router in the area under the jurisdiction of the control management device actively sends the link state advertisement information to the CMD through the corresponding control management channel, and updates the link state information of the HSAPN router in time.
  • control management device may send a command for collecting link state advertisement information to the router in the jurisdiction area by controlling the management channel or the broadcast mode.
  • the control management channel by controlling the control management channel established between the management device and each router in the area under its jurisdiction, the control management channel dynamically collects the link state notification information of each router and calculates the network topology, thereby facilitating the network according to the network.
  • Topology calculates the routing table configuration of each router, implements dynamic routing calculation, control, and management, and avoids the problem of manual configuration of the routing table being complex and error-prone.
  • An embodiment of the present invention provides an apparatus for acquiring routing topology information, as shown in FIG. 9, including:
  • An information receiving module configured to receive, by using a control management channel between the control management device and a router in a region under the jurisdiction of the control management device, link state advertisement information sent by a router corresponding to the jurisdiction region;
  • the topology map calculation module is configured to calculate routing topology information of the area under the control management device according to the link state advertisement information.
  • the routing topology information is specifically a routing topology map, and can be used to calculate and obtain a routing table for the router in the area under the jurisdiction of the control management device, and establish a route.
  • the device for obtaining the routing topology information in the embodiment of the present invention further includes: a channel establishing module, configured to establish a control management channel between the control management device and a router in a jurisdiction of the control management device.
  • a channel establishing module configured to establish a control management channel between the control management device and a router in a jurisdiction of the control management device.
  • the channel establishment module is specifically: An in-band channel establishing module, configured to configure a route between the control management device and a router in a region under the jurisdiction of the control management device by using a data channel, and obtain a relationship between the control management device and a router in a region under the jurisdiction of the control management device In-band control management channel; or
  • An out-of-band channel establishing module configured to connect, by the control management device, an out-of-band interface of a router in a jurisdiction of the control management device, to obtain a relationship between the control management device and a router in a region under the jurisdiction of the control management device Out-of-band control management channel.
  • the device for obtaining routing topology information in the embodiment of the present invention further includes:
  • a command sending module configured to send, by using the control management channel or the broadcast mode, a command for collecting link state advertisement information to a router in a region under the jurisdiction of the control management device.
  • the device for obtaining routing topology information in the embodiment of the present invention further includes:
  • the topology sending module is configured to send routing topology information to a router in a region under the jurisdiction of the control management device.
  • the in-band or out-band control management channel established between the CMD and each HSAPN router in the jurisdiction area, and the CMD-to-HSAPN router link state advertisement information are implemented by using the PUSH, the PULL, and the Hybrid. Dynamic collection, which can further realize the unified calculation of the network topology.
  • the configuration of the routing table of each HSAPN router is realized by centralized calculation or distributed calculation, which avoids the problem that the manual configuration of the routing table is complicated and error-prone. Since HSAPN is a centralized control packet network, route calculation, control, and management are also centralized.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé, un système et un dispositif pour obtenir les informations topologiques d'un itinéraire et établir l'itinéraire, appartenant au domaine technique des réseaux de paquets. Le procédé comporte les étapes consistant à : collecter les informations d'annonce d'état de la liaison envoyées par le routeur par le canal de gestion de commande entre le dispositif de gestion de commande (Control Management Device - CMD) et le routeur appartenant à la zone du CMD (102) ; calculer le diagramme topologique de l'itinéraire appartenant à la zone du CMD en fonction des informations (103) d'annonce d'état de la liaison ; calculer la table de routage du routeur appartenant à la zone du CMD en fonction du diagramme (104) topologique de l'itinéraire. Le dispositif destiné à obtenir les informations topologiques de l'itinéraire comprend le module de réception d'informations et le module de calcul du diagramme topologique. Le système destiné à établir l'itinéraire comprend le routeur, le CMD et le dispositif de calcul de l'itinéraire. Le mode de réalisation de l'invention est capable de réaliser le calcul, la commande et la gestion dynamiques du routage.
PCT/CN2008/073267 2007-11-30 2008-11-30 Procédé, système et dispositif pour obtenir les informations topologiques d'un itinéraire et établir le routage Ceased WO2009076841A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2007101785377A CN101453405A (zh) 2007-11-30 2007-11-30 建立路由的方法、系统和控制管理设备
CN200710178537.7 2007-11-30

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WO2009076841A1 true WO2009076841A1 (fr) 2009-06-25

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CN102884762B (zh) * 2012-06-28 2016-11-16 华为技术有限公司 网络路径控制方法、设备及系统
CN105323163A (zh) * 2014-07-01 2016-02-10 中兴通讯股份有限公司 基于isis的路由计算方法及装置
CN105227458B (zh) * 2014-07-01 2019-11-29 南京中兴新软件有限责任公司 Trill isis的路由计算方法及装置
CN105376162B (zh) * 2014-08-30 2019-05-10 华为技术有限公司 一种链路状态信息通告方法和设备

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