WO2009074093A1 - Procédé et appareil de détermination de la topologie et de gestion automatique des ressources dans un réseau pbb - Google Patents

Procédé et appareil de détermination de la topologie et de gestion automatique des ressources dans un réseau pbb Download PDF

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Publication number
WO2009074093A1
WO2009074093A1 PCT/CN2008/073293 CN2008073293W WO2009074093A1 WO 2009074093 A1 WO2009074093 A1 WO 2009074093A1 CN 2008073293 W CN2008073293 W CN 2008073293W WO 2009074093 A1 WO2009074093 A1 WO 2009074093A1
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WO
WIPO (PCT)
Prior art keywords
network
resource information
pbb
node
network topology
Prior art date
Application number
PCT/CN2008/073293
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English (en)
Chinese (zh)
Inventor
Suping Zhai
Original Assignee
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 WO2009074093A1 publication Critical patent/WO2009074093A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/822—Collecting or measuring resource availability data
    • 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
    • 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
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation

Definitions

  • the present invention relates to the field of computer network technologies, and in particular, to a carrier backbone bridge (Provider)
  • TE is based on PBB. Let's first introduce PBB. PBB speaks Mac-in-Mac in plain language.
  • MAC media access control
  • Ethernet normal Ethernet
  • the user address and the carrier address are separated.
  • the independence of management can be ensured, and the security of the service can be improved on the one hand, and the size of the MAC table of the backbone layer device can be greatly reduced, and the complexity of the device implementation can be reduced.
  • traditional point-to-point, point-to-multipoint, multi-point to multi-point Ethernet services can be provided, and the forwarding path is based on Multiple Spanning Tree.
  • MSTP Multiple Spanning Tree Protocol
  • B-VLAN Backb one-Virtual
  • the domain is calculated and forwarded to generate spanning trees, and different forwarding paths are generated for different B-VLAN domains.
  • the backbone layer virtual local area network (B-VLAN) establish a connected Ethernet channel as a service transmission tunnel, and the PBB TE tunnel can carry multiple PBB services.
  • the topology and resource information of the TE network not only increases the workload, but also brings the possibility of configuration errors.
  • GMP LS is a tunnel establishment mechanism. It establishes a forwarding tunnel based on existing topology information and resource information in a specified network to carry various services. But in the prior art, for PBB
  • TE network uses GMPLS as PBB
  • the TE tunnel establishment mechanism still has no topology information and resource information collection means. It can only rely on the network to deploy the manually recorded topology information and resource information as the input of the GMPLS signaling protocol.
  • the embodiment of the present invention provides a carrier backbone bridge traffic engineering PBB.
  • the method for automatically discovering network topology in a TE network includes the following steps:
  • the first network node constructs an intermediate system to intermediate system IS-IS containing network topology information
  • the first network node receives an IS-IS that is sent by another network node and includes network topology information.
  • the Hello packet records the network topology information in the received packet to the local network topology information database.
  • the method for resource information management in a TE network includes the following steps:
  • the first network node receives IS-IS including resource information sent by other network nodes
  • the LSP packet records the resource information in the received packet into a local resource information database.
  • the TE network node device includes an interface for interacting with other network nodes, and further includes:
  • a network topology information database configured to store received network topology information
  • Network topology information collection module for receiving IS-IS from the node interface
  • the network topology information is extracted, and the network topology information is sent to the network topology information database;
  • the network topology information sending module is configured to add the network topology information of the local node to the IS-IS Hello message to be sent to other network nodes, and send the IS-IS Hello message to the peer PBB TE. node.
  • the TE network node device includes an interface for interacting with other network nodes, and further includes:
  • a resource information database configured to store received resource information
  • Resource information collection module for receiving IS-IS from the node interface
  • the resource information is extracted, and the resource information is sent to the resource information database; [23] the resource information sending module is configured to add the resource information of the node to the IS to be sent to other network nodes.
  • the IS-IS LSP is sent to the peer PBB TE node.
  • the establishment of a TE tunnel provides sufficient information and plays an important role in the QoS guarantee of the service and the deployment of the TE.
  • FIG. 1 is a flowchart of a process of transmitting a network topology information according to a first embodiment of the present invention
  • FIG. 2 is a flowchart of processing at the receiving end for implementing network topology information collection according to a second embodiment of the present invention
  • FIG. 3 is a flowchart of processing at the transmitting end for implementing resource information collection according to a third embodiment of the present invention
  • FIG. 4 is a flowchart of processing at a receiving end for implementing resource information collection according to a fourth embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a network node for implementing network topology information collection according to a fifth embodiment of the present invention
  • FIG. 6 is a structural block diagram of a network node for implementing resource information collection according to a sixth embodiment of the present invention.
  • Embodiments of the invention pass through Intermediate System to Intermediate
  • TE network nodes can collect PBBs through IS-IS protocol packets.
  • IS-IS protocol is a Layer 2 based network protocol for network topology discovery and network resource information collection.
  • the IS-IS protocol includes three types of protocol packets:
  • Packets (Sequence Number Packets, SNPs) packets are used to ensure the integrity of link state information and to ensure synchronization of link state information between adjacent nodes.
  • Level 1 Link State Packets There are four types of SNPs, which are Level 1 Complete Sequence Numbers Packets. 3 ⁇ 4 , Level 2 Complete Sequence Numbers Packets 3 ⁇ 4 , Level 1 Partial Sequence Numbers Packets (one layer serial number grouping) message, and Level 2 Partial Sequence Numbers Packets Messages. Partial Sequence Number
  • the Pakcets (partial serial number grouping) message (including a layer of partial sequence number packet message and a layer 2 partial sequence number packet message) contains some of the latest LSPs information in the link information database on the node, and Co mplete Sequence Numbers
  • the Packets (full sequence number packet) message (including a layer of full sequence number packet and a layer 2 full sequence number packet) contains all the latest LSPs information in the link information database on the node.
  • the TE collects network topology information and link state information, and fully utilizes IS-IS's easily expandable attributes.
  • the embodiment of the present invention uses the TLV, that is, the Type-Length-Value form to enhance the port.
  • TLV format in IS-IS is shown in Table 1:
  • a new TLV is replaced in the TE extension.
  • the TLV (IS) used to transmit neighbor information in the IS-IS protocol is defined.
  • TLV the new TLV is shown in Table 2:
  • the associated Sub-TLV may be included in the respective TLVs, as in the Extended IS reachability TLV, including the Sub-TLV as shown in Table 3. [47] Table 3
  • the embodiment of the present invention is directed to PBB TE, and the following extension method is used for the IS-IS protocol:
  • TE address information used for topology information collection.
  • B-MAC Backbone MAC, backbone MAC
  • TE related information is added to the extended IS reachability TLV in the form of Sub-TLV, thus realizing in PBB.
  • Table 5 The structure of Information is shown in Table 5. It is used to describe the port-related attributes and traffic engineering related information.
  • Sub-TLV can include options as shown in Table 6, where subtypes
  • Metric is a relative concept that is set according to the support of the system. If not supported, it must be set to 0.
  • the specific Bandwidth value can be as shown in Table 7.
  • the TE network topology information packet sending process includes the following steps:
  • Step 101 The sender initializes the IS-IS protocol and obtains its own network topology information, including the B-MAC address of its own port and whether the port supports PBB TE.
  • Step 102 The sender is scheduled to send IS-IS
  • the Hello packet carries the network topology information of the sender.
  • the packet receiving process of the TE topology discovery is shown in Figure 2. The following steps are included:
  • Step 201 The receiving end performs IS-IS protocol initialization
  • Step 202 Receiver receives IS-IS
  • Hello packet where the Hello packet carries network topology information of the sender
  • Step 203 The receiving end records the network topology information in the received Hello message into the local network topology information database.
  • the TE resource information packet sending process includes the following steps:
  • Step 301 The sender judges PBB
  • step 302 Whether the network status of the TE changes, if yes, step 302 is performed, otherwise step 301 is still performed.
  • Step 302 Construct an IS-IS LSP packet according to the change of the PBB TE network, and the IS-IS
  • the LSP packet carries the PBB TE resource information, and the IS-IS is constructed.
  • the LSP packet is sent out.
  • PBB carried in the IS-IS LSP packet is sent out.
  • TE resource information includes: port protection type, port maximum transmission unit, PBB
  • PBB TE delay parameters One or more of TE available bandwidth, PBB TE delay parameters.
  • TE resource information can be carried in dedicated to delivering PBB
  • the TLV of the TE attribute is added to the extended IS reachability TLV in the form of Sub-TLV.
  • the TE resource information packet receiving process includes the following steps:
  • Step 401 The receiving end receives the IS-IS LSP packet.
  • Step 402 The receiving end is based on the PBB in the LSP packet.
  • TE information update the local resource information base.
  • the PBB node for collecting network topology information includes an interface for interacting with other network nodes, and further includes:
  • the network topology information database 501 is configured to store the received network topology information.
  • the network topology information includes whether the B-MAC address and port of other node ports in the network support PBB TE.
  • a network topology information collection module 502 configured to receive IS-IS from the node interface
  • the network topology information is extracted, and the network topology information is sent to the network topology information database 501.
  • the network topology information sending module 503 is configured to add the network topology information of the node to the IS-IS to be sent to other network nodes.
  • the network topology information sending module 503 may include a sending buffer, and each time the sending buffer is exceeded, the IS-IS is constructed and sent.
  • the PBB node for implementing resource information collection according to the sixth embodiment of the present invention is as shown in FIG. 6, and is included for Interfaces that interact with other network nodes, including:
  • the resource information database 601 is configured to store the received resource information.
  • the resource information includes the protection type of the port, the maximum transmission unit of the port, the available bandwidth of the PBB TE, and the PBB.
  • Resource information collection module 602 for receiving IS-IS from the node interface
  • the resource information is extracted, and the resource information is sent to the resource information database 60 l o
  • the resource information sending module 603 is configured to add the resource information of the local node to the IS-IS LSP message to be sent to other network nodes.
  • the establishment of a TE tunnel provides sufficient information and plays an important role in the QoS guarantee of the service and the deployment of the TE.

Abstract

L'invention concerne un procédé de détermination de la topologie d'un réseau et de gestion automatique des informations de ressources dans un contexte d'ingénierie du trafic sur un réseau dorsal de prestataire (provider backbone bridge Traffic Engineering - PBB TE). Un premier nœud du réseau construit des messages Hello IS-IS (de système intermédiaire à système intermédiaire) contenant des informations de topologie du réseau ou des messages LSP IS-IS contenant des informations de ressources, et envoie les messages sur le réseau PBB TE. Un deuxième nœud du réseau reçoit les messages et enregistre les informations de topologie du réseau ou les informations de ressources des messages dans une base de données locale d'informations de topologie du réseau ou une base de données locale d'informations de ressources. L'invention concerne également un appareil de nœud de réseau PBB TE. Le schéma de l'invention est capable d'effectuer la détermination de la topologie du réseau et la gestion automatique des informations de ressources sur le réseau PBB TE.
PCT/CN2008/073293 2007-12-04 2008-12-02 Procédé et appareil de détermination de la topologie et de gestion automatique des ressources dans un réseau pbb WO2009074093A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710195219.1 2007-12-04
CNA2007101952191A CN101453413A (zh) 2007-12-04 2007-12-04 一种pbb网络中自动拓扑发现及资源管理的方法和装置

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CN101667965B (zh) * 2009-09-29 2011-08-24 华为技术有限公司 一种生成访问控制列表的方法及路由设备
CN102857430B (zh) * 2011-07-01 2017-09-12 中兴通讯股份有限公司 一种esadi协议的实例状态管理方法和系统
CN102857441B (zh) * 2011-07-01 2017-07-28 中兴通讯股份有限公司 避免端系统地址分发信息协议报文风暴的方法及路由网桥
CN105337859A (zh) * 2014-08-11 2016-02-17 中兴通讯股份有限公司 网络协议的配置方法及装置
CN104320336B (zh) * 2014-10-29 2017-12-01 福建星网锐捷网络有限公司 一种mpls te链路带宽信息发布处理方法和装置
CN105812168B (zh) * 2014-12-31 2019-02-15 北京神州泰岳软件股份有限公司 一种绘制网络拓扑图的方法和装置
US9906430B2 (en) * 2015-02-25 2018-02-27 Futurewei Technologies, Inc. Intermediate-system-to-intermediate-system topology-transparent-zone
CN105591937B (zh) * 2015-09-30 2018-12-25 新华三技术有限公司 一种网络拓扑信息的采集方法和设备
CN113810297B (zh) * 2021-09-15 2023-04-18 中国铁道科学研究院集团有限公司 一种多网融合列车网络系统及其通信方法
CN116319507B (zh) * 2023-03-31 2024-03-29 西安电子科技大学 一种动态实时网云资源细粒度感知及交互方法

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