WO2012058889A1 - 一种数据通信网络的开通方法及系统 - Google Patents

一种数据通信网络的开通方法及系统 Download PDF

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Publication number
WO2012058889A1
WO2012058889A1 PCT/CN2011/071785 CN2011071785W WO2012058889A1 WO 2012058889 A1 WO2012058889 A1 WO 2012058889A1 CN 2011071785 W CN2011071785 W CN 2011071785W WO 2012058889 A1 WO2012058889 A1 WO 2012058889A1
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network element
dcn
mppp
network
channel
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PCT/CN2011/071785
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English (en)
French (fr)
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范汇华
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中兴通讯股份有限公司
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Publication of WO2012058889A1 publication Critical patent/WO2012058889A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/14Multichannel or multilink protocols

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and system for opening a data communication network. Background technique
  • TMN Telecom Management Network
  • DCN Data Communication Network
  • OA Office Automation
  • ERP Enterprise Resource Planning
  • the inventor found that the opening of the DCN requires the personnel to be deployed to the site to initialize each network element.
  • the IP (Internet Protocol) address and the Virtual Local Area Network (Virtual Local Area Network) information are mainly configured.
  • the NMS can monitor and manage the DCN.
  • the opening method is inefficient and costly.
  • the present invention discloses a method and system for opening a data communication network (DCN), which is used to simplify the opening process of the DCN, improve the opening efficiency of the DCN, and reduce the opening cost of the DCN.
  • DCN data communication network
  • a method for opening a data communication network comprising: establishing a data communication network DCN channel between adjacent network elements having physical connections through multi-chain end-to-end protocol MPPP negotiation; and establishing non-access based on the established DCN channel
  • the NE is initialized and configured; the routing protocol is run to establish a DCN network-wide route.
  • the establishing a DCN channel between neighboring network elements with a physical connection by using the MPPP negotiation includes:
  • the network element of each end connected to the link initiates MPPP link control protocol LCP negotiation to obtain the endpoint descriptor EPD of the peer network element;
  • the new DCN channel is created, and the multi-chain binding relationship between the new DCN channel and the link is formed, and the MPPP network control protocol NCP negotiation is initiated. After the MPPP NCP negotiation succeeds, the new The DCN channel is successfully established;
  • the EPD of the new DCN channel is the peer network obtained through MPPP LCP negotiation. Yuan EPD.
  • the EPD of the peer network element includes a media access control layer MAC address of the peer network element.
  • the initial configuration of each non-access network element based on the established DCN channel includes: the access network element uses an end-to-end protocol PPP extension protocol to perform initial configuration on its neighbor network element; the network management terminal is based on Configuring the IP address of each neighbor NE connected to the NE to remotely log in to each neighbor NE of the access NE, and then perform initial configuration on the other non-access NEs through the neighbor NEs of the access NE.
  • the initial configuration includes configuring an IP address and a network management channel virtual local area network (VLAN) VLAN information.
  • the interface type of the network element includes an Ethernet interface or an optical interface.
  • a system for opening a data communication network comprising a network management terminal and a network element, wherein the network element comprises an access network element and at least one non-access network element, wherein:
  • Each network element establishes a DCN channel between adjacent network elements with physical connections through MPPP negotiation.
  • the network management terminal and the access network element are configured to perform initial configuration on each non-access network element based on the established DCN channel;
  • the network management terminal is further configured to run a routing protocol to establish a DCN network-wide route.
  • the network element is specifically configured to: initiate an MPPP LCP negotiation to obtain an EPD of the peer network element for a link with a physical connection between the neighboring network elements, and obtain the EPD after the MPPP LCP negotiation succeeds.
  • the EPD of the peer NE is the same as the EPD of the successfully established DCN channel; if they are the same, the multi-chain binding relationship between the successfully established DCN channel and the link is formed; if not, create a new one.
  • the DCN channel and forming a multi-chain binding relationship between the new DCN channel and the link, initiates an MPPP NCP negotiation, and after the MPPP NCP negotiation succeeds, the new DCN channel is successfully established, wherein the new The EPD of the DCN channel is the EPD of the peer NE obtained through the MPPP LCP negotiation.
  • the access network element is specifically configured to: use the PPP extended protocol packet to perform the neighboring network element Initializing the configuration;
  • the network management terminal is specifically configured to: remotely log in to each neighboring network element of the access network element, and access each of the access network elements by using an IP address configured for each neighboring network element of the access network element
  • the neighbor NEs perform initial configuration on other non-access NEs.
  • the initial configuration includes configuring an IP address and network management channel VLAN information.
  • the method and system for enabling the DCN provided by the embodiment of the present invention establish a DCN channel between neighboring network elements with physical connections through MPPP negotiation, and perform initial configuration on each non-access network element based on the established DCN channel.
  • a DCN network-wide route is established, thereby enabling the opening of the DCN.
  • the non-access NEs can be initially configured based on the established DCN channel, and the non-access NEs need not be initialized and configured in the field, thereby simplifying the DCN opening process and improving the DCN.
  • the turn-on efficiency of the DCN reduces the turn-on cost of the DCN.
  • FIG. 1 is a schematic flowchart of an implementation process of a DCN opening method according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a DCN opening system according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an application scenario in which a DCN is opened in an embodiment of the present invention
  • FIG. 4 is a schematic diagram of a configuration of a DCN channel according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a format of an MPPP negotiation packet according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an MPPP negotiation process according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a DCN opening process according to an embodiment of the present invention. detailed description
  • the embodiment of the invention provides a method and a system for opening a DCN, which is used to simplify the opening process of the DCN, improve the opening efficiency of the DCN, and reduce the opening cost of the DCN.
  • PPP Point to Point Protocol
  • SLIP Serial Line Internet Protocol
  • NCP Network Control Protocol
  • MPPP PPP Multilink Protocol
  • MPPP PPP Multilink Protocol
  • N N > 1
  • the DCN channel between adjacent network elements is automatically established through MPPP negotiation.
  • the neighboring network element is initialized and configured by the access network element that has been initially configured.
  • the initial configuration includes configuring the IP address of the neighboring network element and the VLAN information of the network management channel.
  • the administrator can remotely log in to the neighboring NE of the access NE through the network management terminal, and initialize the neighbor NEs of the logged-in neighboring NEs.
  • the DCN channel between the NEs in the entire DCN is successfully established.
  • the routing protocol is run to form a network-wide route of the entire DCN.
  • a method for opening a DCN includes the following steps:
  • Step 101 Establish a DCN channel between adjacent network elements with physical connections through MPPP negotiation.
  • each end network element connected to the link initiates MPPP LCP negotiation to obtain an EPD (EndPoint Description) of the peer network element.
  • EPD EndPoint Description
  • MPPP LCP negotiation it is determined whether the EPD of the obtained peer network element is the same as the EPD of the successfully established DCN channel; if they are the same, the successfully established DCN channel and the multi-chain of the link are formed.
  • Binding relationship if not, create a new DCN channel, and form a multi-chain binding relationship between the new DCN channel and the link, initiate MPPP NCP negotiation, and after the MPPP NCP negotiation succeeds, the new DCN channel
  • the EPD of the new DCN channel is the EPD of the peer network element obtained through the MPPP LCP negotiation.
  • the EPD of the DCN channel between the neighboring NEs is the EPD of the peer network element.
  • the EPD of the peer network element may be the MAC (Media Access Control Layer) address of the peer network element, so as to ensure the uniqueness of the EPD of each network element.
  • MAC Media Access Control Layer
  • Step 102 Perform initial configuration on each non-access network element based on the established DCN channel.
  • initial configuration of each non-access network element includes configuring an IP address of each non-access network element and VLAN information of the network management channel. And configuring a DCN-dedicated routing protocol domain.
  • the access network element is accessed.
  • Step 103 Run a routing protocol to establish a DCN network-wide route.
  • the routing protocol may use OSPF (Open Shortest Path First) protocol, IS-IS (Intermediate System to Intermediate System Routing) protocol, and RIP (Routing Information Protocol). , Routing Information Protocol, IGRP (Interior Gateway Routing Protocol), EIGRP (Enhanced Interior Gateway Routing Protocol), BGP (Border Gateway Protocol), etc.
  • OSPF Open Shortest Path First
  • IS-IS Intermediate System to Intermediate System Routing
  • RIP Raster Information Protocol
  • Routing Information Protocol Routing Information Protocol
  • IGRP Interior Gateway Routing Protocol
  • EIGRP Enhanced Interior Gateway Routing Protocol
  • BGP Border Gateway Protocol
  • the network element in the embodiment of the present invention is generally a network device such as a switch and a router.
  • the interface type of the network element may include an Ethernet interface or an optical interface.
  • a DCN opening system is also provided in the embodiment of the present invention. Since the principle of solving the problem is similar to the DCN opening method, the implementation of the system can be referred to the implementation of the method, and the details are not repeated. .
  • FIG. 2 is a schematic structural diagram of a DCN opening system according to an embodiment of the present invention, including a network management terminal 20 and a network element 21, where the network element 21 includes an access network element 211 and at least one non-access network. Yuan 212, where:
  • Each network element establishes a DCN channel between adjacent network elements with physical connections through MPPP negotiation.
  • the network management terminal 20 and the access network element 211 are configured to initialize the non-access network elements 212 based on the established DCN channel;
  • the network management terminal 20 is further configured to run a routing protocol and establish a DCN network-wide route.
  • the network element 21 is specifically configured to initiate an MPPP LCP negotiation to obtain an EPD of the peer network element for a link with a physical connection between the neighboring network elements; After the success of the quotient, it is determined whether the EPD of the obtained peer network element is the same as the EPD of the successfully established DCN channel; if they are the same, the multi-chain binding relationship between the successfully established DCN channel and the link is formed; If a new DCN channel is created, a new DCN channel is formed, and a multi-chain binding relationship between the new DCN channel and the link is formed, and MPPP NCP negotiation is initiated. After the MPPP NCP negotiation succeeds, the new DCN channel is established.
  • the EPD of the new DCN channel is the EPD of the peer network element obtained through the MPPP LCP negotiation.
  • the access network element 211 is configured to initialize the neighbor network element by using the PPP extended protocol packet.
  • the network management terminal 20 is configured to remotely log in to each neighboring network element of the access network element 211 based on the IP address configured for each neighboring network element of the access network element 211, and access each neighboring network of the network element 211.
  • the element performs initial configuration on other non-access network elements 212 in sequence.
  • the initial configuration includes configuring an IP address and network management channel VLAN information, and configuring a routing protocol domain dedicated to the DCN.
  • FIG. 3 it is a schematic diagram of an application scenario in which a DCN is opened in an embodiment of the present invention.
  • a network element directly connected to a network management terminal through a Transmission Control Protocol (TCP) is generally referred to as an access network element, and may also be called an access network element. It is a gateway network element (GNE).
  • the access network element provides data forwarding at the network layer or the application layer.
  • the access network element can manage other non-access network elements connected through the optical fiber.
  • the network element is connected to the access network element through the direct connection network cable, and the access network element is connected to other non-access network elements through the optical fiber.
  • the network management terminal can also be connected to the access network element through a switch/HUB or a router.
  • FIG. 4 it is a schematic diagram of a DCN channel configuration in the embodiment of the present invention.
  • the IP address of the first neighbor NE NE2 of the access NE NE1 is set to 2.1.1.18/24, and the second neighbor network of the access NE is set.
  • the IP address of the NE4 is 4.4.4.1/32.
  • the network management terminal (NMS) can remotely log in to NE2 or NE4, and set the IP address of NE3 of NE2 or NE4 to 2.2.3.18. /twenty four.
  • the interface of the network element involved in the embodiment of the present invention may be an Ethernet interface or an optical interface.
  • the interface type of the network element is an Ethernet interface as an example for description.
  • the device sends and receives MPPP negotiation packets in the mode of PPP over Ethernet (PPP over Ethernet).
  • the MPPP negotiation packet format is as shown in Figure 5, including: DMAC (Destination MAC address), SMAC (Source MAC address), VLAN TAG (Virtual Local Area Network TAG), TYPE (Type) ), payload (package payload).
  • DMAC Densination MAC address
  • SMAC Source MAC address
  • VLAN TAG Virtual Local Area Network TAG
  • TYPE Type
  • payload payload
  • the private protocol type TYPE 0x8863 is used to indicate that the text is an MPPP negotiation message
  • the protocol type TYPE 0x8865 is used to indicate that the MPPP data packet of the neighboring network element is configured.
  • the network element A is the first neighbor network element and the second neighbor network element of the network element A, respectively.
  • the implementation process of MPPP negotiation includes the following steps:
  • Step 601 After the physical connection of the first link (assuming that the physical connection between the network element A and the network element B) is established, the MPPP LCP negotiation is initiated.
  • both the network element A and the network element B send MPPP LCP negotiation packets to set and test the data link.
  • the network element A carries its own EPD in the MPPP LCP negotiation packet sent to the network element B.
  • the network element B carries its own EPD in the MPPP LCP negotiation packet sent to the network element A to distinguish Different link connections.
  • the EPD of the DCN channel between the network element B and the network element B is the EPD of the network element B.
  • the EPD of the DCN channel between the network element A and the network element A is the network. Yuan A's EPD.
  • the MAC address of each network element may be used as the EPD of each network element.
  • Step 602 Determine whether the MPPP LCP negotiation is successful. If yes, go to step 603. If no, go to step 601.
  • Step 603 Create a DCN channel 1 to form a multi-link binding of the DCN channel 1 and the first link. Relationship
  • a multi-chain interface is created to form a DCN channel between the network element A and the network element B.
  • DCN channel 1 For convenience of distinction, it is called DCN channel 1.
  • the EPD of the generated DCN channel 1 is set to the EPD of the network element B.
  • the EPD of the generated DCN channel 1 is set to the EPD of the network element A.
  • Step 604 Initiate MPPP NCP negotiation.
  • the MPPP NCP negotiation must be sent to select and set one or more network layer protocols. Once each of the selected network layer protocols is set, data packets from each network layer protocol can be sent over the link.
  • Step 605 determining whether the MPPP NCP negotiation is successful, and if yes, executing step 606, otherwise, performing step 604;
  • Step 606 successfully establishing a DCN channel 1;
  • Step 607 After the physical connection of the second link (assumed to be the physical connection between the network element A and the network element C) is established, the MPPP LCP negotiation is initiated.
  • the network element A carries its own EPD in the MPPP LCP negotiation packet sent to the network element C.
  • the network element C negotiates with the MPPP LCP sent to the network element A.
  • the message carries its own EPD.
  • Step 608 determining whether the MPPP LCP negotiation is successful, if yes, proceeding to step 609, otherwise performing step 607;
  • Step 609 it is determined whether the EPD of the network element C is the same as the EPD of the DCN channel 1, if the same, step 610 is performed, otherwise step 611 is performed;
  • Step 610 The second link forms a multi-chain binding relationship with the DCN channel 1, and ends the current process.
  • Step 611 creating a DCN channel 2, forming a multi-chain binding of the DCN channel 2 and the second link Relationship
  • Step 612 Initiate MPPP NCP negotiation.
  • Step 613 determining whether the MPPP NCP negotiation is successful, and if yes, executing step 614, otherwise, performing step 612;
  • Step 614 successfully establishing DCN channel 2.
  • the embodiment of the present invention is a DCN activation process after the physical connection between the network elements involved and the initial configuration of the access network element is performed. As shown in FIG. 7, the method includes the following steps:
  • Step 701 Each network element is powered on.
  • Step 702 Perform MPPP negotiation between neighboring network elements with physical connections.
  • multiple DCN channels are formed to prevent multiple link connections between the NEs, and multiple links between the two NEs are bundled together to form a DCN channel. If the access NE is to establish a DCN channel with multiple neighbor NEs, the MAC address of the neighbor NE is used as the EPD in the MPPP LCP negotiation phase. Different EPD links form different DCN channels, and the same EPD link is bound. Go to a DCN channel. In this way, the DCN channel between adjacent network elements can be automatically negotiated.
  • Step 703 determining whether the MPPP negotiation is successful, if yes, executing step 704; otherwise, performing step 702;
  • Step 704 Establish a DCN channel between each network element.
  • Step 705 Perform initial configuration on the non-access network element.
  • the access network element uses the PPP extension protocol to configure the IP address of the neighboring network element and the network management channel VLAN information, etc.; the network management terminal is configured based on the neighboring network elements of the access network element.
  • the IP address of the neighboring network element of the access network element is remotely logged in, and the neighboring network elements of the access network element are sequentially configured to initialize other non-access network elements.
  • Step 706 Run a routing protocol to establish a DCN network-wide route.
  • the method and system for enabling the DCN provided by the embodiment of the present invention establish a DCN channel between adjacent network elements with physical connection through ⁇ negotiation, and perform initial configuration on each non-access network element based on the established DCN channel, and finally By running a routing protocol, a DCN network-wide route is established, thereby enabling the opening of the DCN.
  • the non-access NEs can be initially configured based on the established DCN channel, and the non-access NEs need not be initialized and configured in the field, thereby simplifying the DCN opening process and improving the DCN.
  • the turn-on efficiency of the DCN reduces the turn-on cost of the DCN.

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Description

一种数据通信网络的开通方法及系统 技术领域
本发明涉及通信技术领域, 尤其涉及一种数据通信网络的开通方法及 系统。 背景技术
TMN ( Telecom Management Network, 电信管理网 )是现代电信网的重 要支撑网之一, 是对电信网实施监测控制、 维护管理、 运营管理等的重要 手段。
DCN ( Data Communication Network, 数据通信网络)是为满足电信企 业维护、 经营、 管理和服务的需要, 在电信网上构架的一个综合数据通信 网络。 随着以太网技术的发展, 运营商对 DCN的潜力进行了更进一步地挖 掘, 随着企业信息化程度的不断提高, 新建和改建的 DCN已逐渐成为运营 商内部的企业网, 除了承载传统的多种专用网管信息之外, DCN还承担起 了计费系统、 用户信用控制和管理系统、 以及业务收入的上报等功能。 另 外, DCN还承载运营商内部的 OA ( Office Automation, 办公自动化)办公、 邮件系统、 公文流转、 企业内部网站应用和管理支撑系统, 包括 ERP ( Enterprise Resource Planning, 企业资源计划) 系统、 数据仓库等。 DCN 对运营商适应日益激烈的市场竟争、 促进业务发展和满足日益提高的管理 要求起到了极其重要的作用。
发明人在开发过程中发现, DCN的开通需要开通人员到现场对每一网 元进行初始化配置, 主要配置 IP ( Internet Protocol, 互联网协议)地址、 网 管通道 VLAN ( Virtual Local Area Network, 虚拟局域网)信息等, 初始化 配置完成之后网管才能对 DCN进行监控管理。 当 DCN中的网元分布在不 同区域时, 该开通方式效率低下, 成本较高。
因此, 如何简化 DCN的开通流程, 提高 DCN的开通效率, 降低 DCN 的开通成本成为现有技术中亟待解决的问题之一。 发明内容
有鉴于此, 本发明公开了一种数据通信网络(DCN ) 的开通方法及系 统, 用以简化 DCN的开通流程, 提高 DCN的开通效率, 降低 DCN的开通 成本。
为解决上述技术问题, 本发明的技术方案是这样实现的:
一种数据通信网络的开通方法, 包括: 通过多链端到端协议 MPPP协 商, 建立具有物理连接的相邻网元之间的数据通信网络 DCN通道; 基于建 立的 DCN通道, 对各非接入网元进行初始化配置; 运行路由协议, 建立 DCN全网路由。
所述通过 MPPP协商建立具有物理连接的相邻网元之间的 DCN通道, 具体包括:
针对具有物理连接的相邻网元之间的一条链路, 该条链路所连接的每 一端网元发起 MPPP链路控制协议 LCP协商以获取对端网元的端点描述符 EPD;
在所述 MPPP LCP协商成功之后, 判断获取到的对端网元的 EPD与已 经建立成功的 DCN通道的 EPD是否相同;
如果相同,则形成已经建立成功的 DCN通道与该条链路的多链绑定关 系;
如果不相同, 则创建新的 DCN通道, 并形成该新的 DCN通道与该条 链路的多链绑定关系 , 发起 MPPP网络控制协议 NCP协商 , 在所述 MPPP NCP协商成功之后, 所述新的 DCN通道建立成功;
其中, 新的 DCN通道的 EPD为通过 MPPP LCP协商获取到的对端网 元的 EPD。
所述对端网元的 EPD包括对端网元的媒体接入控制层 MAC地址。 所述基于建立的 DCN通道对各非接入网元进行初始化配置,具体包括: 接入网元釆用端到端协议 PPP 扩展协议 4艮文对其邻居网元进行初始化配 置; 网络管理终端基于对接入网元的各邻居网元配置的 IP地址, 远程登录 到接入网元的各邻居网元 , 并通过接入网元的各邻居网元依次对其它非接 入网元进行初始化配置。
所述初始化配置包括配置 IP地址和网管通道虚拟局域网 VLAN信息。 所述网元的接口类型包括以太接口或者光接口。
一种数据通信网络的开通系统, 包括网络管理终端和网元, 所述网元 包括接入网元和至少一个非接入网元, 其中:
各网元通过 MPPP协商,建立具有物理连接的相邻网元之间的 DCN通 道;
所述网络管理终端和接入网元, 用于基于建立的 DCN通道, 对各非接 入网元进行初始化配置; 以及
所述网络管理终端, 还用于运行路由协议, 建立 DCN全网路由。
所述网元, 具体用于: 针对与相邻网元之间的具有物理连接的一条链 路, 发起 MPPP LCP协商以获取对端网元的 EPD; 在所述 MPPP LCP协商 成功之后, 判断获取到的对端网元的 EPD与已经建立成功的 DCN通道的 EPD是否相同; 如果相同, 则形成已经建立成功的 DCN通道与该条链路的 多链绑定关系; 如果不相同, 则创建新的 DCN通道, 并形成该新的 DCN 通道与该条链路的多链绑定关系,发起 MPPP NCP协商,在所述 MPPP NCP 协商成功之后,所述新的 DCN通道建立成功,其中,新的 DCN通道的 EPD 为通过 MPPP LCP协商获取到的对端网元的 EPD。
所述接入网元, 具体用于: 釆用 PPP扩展协议报文对其邻居网元进行 初始化配置; 所述网络管理终端, 具体用于: 基于对接入网元的各邻居网 元配置的 IP地址, 远程登录到接入网元的各邻居网元, 并通过接入网元的 各邻居网元依次对其它非接入网元进行初始化配置。
所述初始化配置包括配置 IP地址和网管通道 VLAN信息。
本发明实施例提供的 DCN的开通方法及系统, 通过 MPPP协商, 建立 具有物理连接的相邻网元之间的 DCN通道, 基于建立的 DCN通道, 对各 非接入网元进行初始化配置,最后通过运行路由协议,建立 DCN全网路由, 从而实现了 DCN的开通。该方案在开通 DCN时,基于建立的 DCN通道即 可对各非接入网元进行初始化配置, 而无需到现场对各非接入网元进行初 始化配置, 从而简化了 DCN的开通流程, 提高了 DCN的开通效率, 降低 了 DCN的开通成本。
本发明的其它特征和优点将在随后的说明书中阐述, 并且, 部分地从 说明书中变得显而易见, 或者通过实施本发明而了解。 本发明的目的和其 他优点可通过在所写的说明书、 权利要求书、 以及附图中所特别指出的结 构来实现和获得。 附图说明
图 1为本发明实施例中 DCN的开通方法实施流程示意图;
图 2为本发明实施例中 DCN的开通系统结构示意图;
图 3为本发明实施例中 DCN开通的应用场景示意图;
图 4为本发明实施例中 DCN通道的配置示意图;
图 5为本发明实施例中 MPPP协商报文格式示意图;
图 6为本发明实施例中 MPPP协商流程示意图;
图 7为本发明实施例中 DCN开通流程示意图。 具体实施方式
本发明实施例提供一种 DCN的开通方法及系统, 用以简化 DCN的开 通流程, 提高 DCN的开通效率, 降低了 DCN的开通成本。
以下结合说明书附图对本发明的优选实施例进行说明, 应当理解, 此 处所描述的优选实施例仅用于说明和解释本发明, 并不用于限定本发明, 合。
PPP( Point to Point Protocol,端到端协议)是由 SLIP( Serial Line Internet Protocol, 串行互联网协议)发展而来, 它的出现主要是用来通过拨号或专 线方式建立点对点连接发送数据, 使其成为各种主机、 网桥和路由器之间 简单连接的一种共同的解决方案。 也就是说 PPP不但要提供链路层的网络 连接, 还能为路由和网桥的上层协议提供服务。 PPP协商包含 LCP ( Link Control Protocol, 链路控制协议)协商和 NCP ( Network Control Protocol, 网络控制协议)协商两个阶段。
MPPP ( PPP Multilink Protocol, 多链 PPP协议)是随着网络技术的发 展, 为了满足在低速链路上支持实时多媒体信息传输等综合服务的要求, 作为 PPP功能扩展协议而产生的。 它可提供更大的带宽, 实现数据的快速 转发。 同时, 还可对链路资源实现动态分配, 有效的利用宝贵的资源, 将 多条低速链路捆绑到一个多链中。 MPPP可以用来灵活的调整点对点系统之 间的多条独立物理链路, 它可为整个系统提供一个虚拟链路, 虚拟链路的 带宽是 N个链路的捆绑之和(N > 1 )。
本发明实施例根据 MPPP的特点 , 在 DCN中 , 当相邻网元之间的物理 连接建立成功之后, 自动通过 MPPP协商建立相邻网元之间的 DCN通道。 通过已进行了初始化配置的接入网元对其邻居网元进行初始化配置, 初始 化配置包括配置邻居网元的 IP地址及网管通道 VLAN信息, 这样, 网络管 理员可以通过网络管理终端远程登录到接入网元的邻居网元上, 对所登录 到的邻居网元的邻居网元进行初始化配置,在成功建立整个 DCN中各网元 间的 DCN通道并对各非接入网元初始化配置完成之后, 运行路由协议, 从 而形成整个 DCN的全网路由。
如图 1所示, 为本发明实施例提供的一种 DCN的开通方法, 包括如下 步骤:
步骤 101、通过 MPPP协商,建立具有物理连接的相邻网元之间的 DCN 通道;
具体的, 针对具有物理连接的相邻网元之间的一条链路, 该条链路所 连接的每一端网元发起 MPPP LCP协商以获取对端网元的 EPD ( EndPoint Description, 端点描述符); 在该 MPPP LCP协商成功之后, 判断获取到的 对端网元的 EPD与已经建立成功的 DCN通道的 EPD是否相同;如果相同, 则形成已经建立成功的 DCN通道与该条链路的多链绑定关系;如果不相同, 则创建新的 DCN通道, 并形成该新的 DCN通道与该条链路的多链绑定关 系, 发起 MPPP NCP协商, 在 MPPP NCP协商成功之后, 新的 DCN通道 建立成功, 其中, 新的 DCN通道的 EPD为通过 MPPP LCP协商获取到的 对端网元的 EPD。
具体的, 针对每一端网元来说, 与其相邻网元间的 DCN通道的 EPD 为对端网元的 EPD。
具体实施中, 对端网元的 EPD可以为对端网元的 MAC ( Media Access Control, 媒体接入控制层)地址, 这样可以确保各网元的 EPD的唯一性。
步骤 102、 基于建立的 DCN通道, 对各非接入网元进行初始化配置; 具体实施中, 对各非接入网元进行初始化配置包括配置各非接入网元 的 IP地址、 网管通道 VLAN信息、 以及配置 DCN专用的路由协议域等。
具体实施中, 预先对接入网元现场进行初始化配置后, 通过接入网元 釆用 PPP扩展协议报文对其邻居网元进行初始化配置; 网络管理终端基于 对接入网元的各邻居网元配置的 IP地址, 远程登录到接入网元的各邻居网 元, 并通过接入网元的各邻居网元依次对其它非接入网元进行初始化配置。
步骤 103、 运行路由协议, 建立 DCN全网路由。
具体实施中, 所述的路由协议可以釆用 OSPF ( Open Shortest Path First,开 放式最短路径)协议、 IS-IS ( Intermediate System to Intermediate System Routing, 中间系统间的路由)协议、 RIP ( Routing information Protocol, 路 由信息协议)、 IGRP( Interior Gateway Routing Protocol,内部网关路由协议)、 EIGRP ( Enhanced Interior Gateway Routing Protocol, 增强的内部网关路由 协议)、 BGP ( Border Gateway Protocol, 边界网关协议)等。
具体实施中, 本发明实施例涉及的网元一般为交换机、 路由器等网络 设备, 网元的接口类型可以包括以太接口或者光接口。
基于同一发明构思, 发明实施例中还提供了一种 DCN的开通系统, 由 于该系统解决问题的原理与 DCN的开通方法相似, 因此该系统的实施可以 参见方法的实施, 重复之处不再赘述。
如图 2所示,为本发明实施例提供的一种 DCN的开通系统结构示意图, 包括网络管理终端 20和网元 21 , 所述网元 21包括接入网元 211和至少一 个非接入网元 212, 其中:
各网元通过 MPPP协商,建立具有物理连接的相邻网元之间的 DCN通 道;
所述网络管理终端 20和接入网元 211 ,用于基于建立的 DCN通道,对 各非接入网元 212进行初始化配置; 以及
所述网络管理终端 20, 还用于运行路由协议, 建立 DCN全网路由。 具体的, 网元 21具体用于针对与相邻网元之间的具有物理连接的一条 链路, 发起 MPPP LCP协商以获取对端网元的 EPD; 在所述 MPPP LCP协 商成功之后, 判断获取到的对端网元的 EPD与已经建立成功的 DCN通道 的 EPD是否相同; 如果相同, 则形成已经建立成功的 DCN通道与该条链 路的多链绑定关系; 如果不相同, 则创建新的 DCN通道, 并形成该新的 DCN通道与该条链路的多链绑定关系,发起 MPPP NCP协商,在所述 MPPP NCP协商成功之后, 所述新的 DCN通道建立成功, 其中, 新的 DCN通道 的 EPD为通过 MPPP LCP协商获取到的对端网元的 EPD。
具体的, 接入网元 211用于釆用 PPP扩展协议报文对其邻居网元进行 初始化配置;
所述网络管理终端 20用于基于对接入网元 211的各邻居网元配置的 IP 地址, 远程登录到接入网元 211 的各邻居网元, 并通过接入网元 211 的各 邻居网元依次对其它非接入网元 212进行初始化配置。 具体实施中, 初始 化配置包括配置 IP地址和网管通道 VLAN信息、 以及配置 DCN专用的路 由协议域等。
如图 3所示, 为本发明实施例中 DCN开通的应用场景示意图, 通常把 网络管理终端经过 TCP ( Transmission Control Protocol, 传输控制协议 )直 接相连的网元称为接入网元, 也可以称为网关网元(GNE )。 接入网元在网 络层或应用层提供数据转发功能, 可以通过接入网元管理其它通过光纤连 接的非接入网元。 各网元环形组网, 网络管理终端通过直连网线与接入网 元连接, 接入网元通过光纤与其它非接入网元连接。 网络管理终端也可以 通过交换机 /HUB或者路由器等与接入网元连接。
如图 4所示, 为本发明实施例中 DCN通道配置示意图, 设置接入网元 NE1的第一邻居网元 NE2的 IP地址为 2.1.1.18/24,设置接入网元的第二邻 居网元 NE4的 IP地址为 4.4.4.1/32, 根据 NE2或者 NE4的 IP地址, 网络 管理终端 (NMS )可以远程登录到 NE2或者 NE4, 设置 NE2或者 NE4的 邻居网元 NE3的 IP地址为 2.2.3.18/24。 本发明实施例涉及的网元的接口可以为以太接口或者光接口。 为了便 于描述, 本发明实施例中以网元的接口类型为以太接口为例进行说明。 对 于以太接口, 釆用 PPPoE ( PPP over Ethernet, 以太网上承载 PPP ) 的方式 收发 MPPP 协商报文。 MPPP 协商报文格式如图 5 所示, 包括: DMAC ( Destination MAC, 目的 MAC地址), SMAC ( Source MAC, 源 MAC地 址), VLAN TAG( Virtual Local Area Network TAG,虚拟局域网标签), TYPE (类型), payload (封装净荷)。 本发明实施例釆用私有协议类型 TYPE 0x8863来表示 文为 MPPP协商 4艮文, 协议类型 TYPE 0x8865来表示配置 邻居网元的 MPPP数据报文。 假设对于网元 A来说, 存在与网元 B、 网元 C间的两条链路, 网元 A与网元 B、 网元 C之间的链路均为多链链路, 网 元:6、 网元 C分别为网元 A的第一邻居网元和第二邻居网元。如图 6所示, MPPP协商的实施过程, 包括如下步骤:
步骤 601、 第一条链路的物理连接 (假设为网元 A与网元 B之间的物 理连接)建立后, 发起 MPPP LCP协商;
具体的, 网元 A与网元 B通过光纤或者网线建立物理连接后, 为了建 立点对点链路通信, 网元 A与网元 B均发送 MPPP LCP协商报文以设定和 测试数据链路。 本发明实施例中, 网元 A在向网元 B发送的 MPPP LCP协 商报文中携带自身的 EPD; 网元 B在向网元 A发送的 MPPP LCP协商报文 中携带自身的 EPD , 以区分不同的链路连接。 具体的, 对于网元 A来说, 其与网元 B之间的 DCN通道的 EPD为网元 B的 EPD; 对于网元 B来说, 其与网元 A之间的 DCN通道的 EPD为网元 A的 EPD。 本发明实施例中, 可以釆用各网元的 MAC地址作为各网元的 EPD。
步骤 602、 判断 MPPP LCP协商是否成功, 如果是, 则执行步骤 603 , 如果否, 则执行步骤 601。
步骤 603、创建 DCN通道 1 , 形成 DCN通道 1与第一条链路的多链绑 定关系;
具体的, 在 MPPP LCP协商成功后, 创建多链接口, 形成网元 A与网 元 B之间的 DCN通道, 为了便于区分, 称为 DCN通道 1。 针对网元 A来 说, 设置生成的 DCN通道 1的 EPD为网元 B的 EPD; 针对网元 B来说, 设置生成的 DCN通道 1的 EPD为网元 A的 EPD。
步骤 604、 发起 MPPP NCP协商;
在链路通信建立过程中, MPPP LCP所需的可选功能被选定之后, 必须 发送 MPPP NCP协商 4艮文以选择和设定一个或更多的网络层协议。 一旦每 个被选择的网络层协议都被设定好了, 来自每个网络层协议的数据报文就 能在链路上发送了。
步骤 605、 判断 MPPP NCP协商是否成功, 如果是, 执行步骤 606, 否 则, 执行步骤 604;
步骤 606、 成功建立 DCN通道 1 ;
步骤 607、 第二条链路的物理连接 (假设为网元 A与网元 C之间的物 理连接)建立后, 发起 MPPP LCP协商;
与第一条链路进行 MPPP LCP协商过程类似, 网元 A在向网元 C发送 的 MPPP LCP协商报文中携带自身的 EPD; 同理, 网元 C在向网元 A发送 的 MPPP LCP协商报文中携带自身的 EPD。
步骤 608、 判断 MPPP LCP是否协商成功, 如果是, 则执行步骤 609, 否则执行步骤 607;
步骤 609、 判断网元 C的 EPD与 DCN通道 1的 EPD是否相同, 如果 相同, 则执行步骤 610, 否则执行步骤 611 ;
步骤 610、 第二条链路与 DCN通道 1形成多链绑定关系, 结束当前流 程;
步骤 611、创建 DCN通道 2 , 形成 DCN通道 2与第二条链路的多链绑 定关系;
步骤 612、 发起 MPPP NCP协商;
步骤 613、 判断 MPPP NCP协商是否成功, 如果是, 执行步骤 614, 否 则, 执行步骤 612;
步骤 614、 成功建立 DCN通道 2。
后续网元 A与其它具有物理连接的邻居网元之间发起 MPPP协商的具 体实施过程, 与上述 MPPP协商过程类似, 这里不再重复赘述。
为了更好的理解本发明实施例的实施方式, 下面通过具体的实施例对 本发明实施例的实施过程进行说明。 本发明实施例是在所涉及的各网元间 的物理连接已存在、 且对接入网元进行初始化配置后的 DCN开通流程, 如 图 7所示, 包括如下步骤:
步骤 701、 各网元上电;
步骤 702、 具有物理连接的相邻网元之间进行 MPPP协商;
具体实施中,为防止网元间存在多条链路连接时会形成多个 DCN通道, 釆用 MPPP协商将两个网元间的多个链路捆绑到一起,形成一个 DCN通道。 若接入网元同时和多个邻居网元要建立 DCN通道,在 MPPP LCP协商阶段 携带邻居网元的 MAC地址作为 EPD, 不同 EPD的链路形成不同的 DCN 通道, 相同 EPD的链路绑定到一个 DCN通道。 通过这种方式可自动协商 建立各相邻网元间的 DCN通道;
步骤 703、 判断 MPPP协商是否成功, 如果是, 则执行步骤 704; 否则, 执行步骤 702;
步骤 704、 建立各网元间的 DCN通道;
步骤 705、 对非接入网元进行初始化配置;
具体的,接入网元釆用 PPP扩展协议 ^艮文配置其邻居网元的 IP地址及 网管通道 VLAN信息等; 网络管理终端基于对接入网元的各邻居网元配置 的 IP地址, 远程登录到接入网元的各邻居网元, 并通过接入网元的各邻居 网元依次对其它非接入网元进行初始化配置。
步骤 706、 运行路由协议, 建立 DCN全网路由。
本发明实施例提供的 DCN的开通方法及系统, 通过 ΜΡΡΡ协商, 建立 具有物理连接的相邻网元之间的 DCN通道, 基于建立的 DCN通道, 对各 非接入网元进行初始化配置,最后通过运行路由协议,建立 DCN全网路由, 从而实现了 DCN的开通。该方案在开通 DCN时,基于建立的 DCN通道即 可对各非接入网元进行初始化配置, 而无需到现场对各非接入网元进行初 始化配置, 从而简化了 DCN的开通流程, 提高了 DCN的开通效率, 降低 了 DCN的开通成本。 本发明的精神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权 利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在 内。

Claims

权利要求书
1、 一种数据通信网络的开通方法, 其特征在于, 包括:
通过多链端到端协议 MPPP协商, 建立具有物理连接的相邻网元之间 的数据通信网络 DCN通道;
基于建立的 DCN通道, 对各非接入网元进行初始化配置;
运行路由协议, 建立 DCN全网路由。
2、 如权利要求 1所述的方法, 其特征在于, 所述通过 MPPP协商建立 具有物理连接的相邻网元之间的 DCN通道, 具体包括:
针对具有物理连接的相邻网元之间的一条链路, 该条链路所连接的每 一端网元发起 MPPP链路控制协议 LCP协商以获取对端网元的端点描述符 EPD;
在所述 MPPP LCP协商成功之后, 判断获取到的对端网元的 EPD与已 经建立成功的 DCN通道的 EPD是否相同;
如果相同,则形成已经建立成功的 DCN通道与该条链路的多链绑定关 系;
如果不相同, 则创建新的 DCN通道, 并形成该新的 DCN通道与该条 链路的多链绑定关系 , 发起 MPPP网络控制协议 NCP协商 , 在所述 MPPP NCP协商成功之后, 所述新的 DCN通道建立成功;
其中, 新的 DCN通道的 EPD为通过 MPPP LCP协商获取到的对端网 元的 EPD。
3、如权利要求 2所述的方法, 其特征在于, 所述对端网元的 EPD包括 对端网元的媒体接入控制层 MAC地址。
4、 如权利要求 1、 2或 3所述的方法, 其特征在于, 所述基于建立的 DCN通道对各非接入网元进行初始化配置, 具体包括:
接入网元釆用端到端协议 PPP扩展协议 4艮文对其邻居网元进行初始化 配置;
网络管理终端基于对接入网元的各邻居网元配置的 IP地址, 远程登录 到接入网元的各邻居网元 , 并通过接入网元的各邻居网元依次对其它非接 入网元进行初始化配置。
5、 如权利要求 1、 2或 3所述的方法, 其特征在于, 所述初始化配置 包括配置 IP地址和网管通道虚拟局域网 VLAN信息。
6、 如权利要求 1、 2或 3所述的方法, 其特征在于, 所述网元的接口 类型包括以太接口或者光接口。
7、 一种数据通信网络的开通系统, 其特征在于, 包括网络管理终端和 网元, 所述网元包括接入网元和至少一个非接入网元, 其中:
各网元通过 MPPP协商,建立具有物理连接的相邻网元之间的 DCN通 道;
所述网络管理终端和接入网元, 用于基于建立的 DCN通道, 对各非接 入网元进行初始化配置; 以及
所述网络管理终端, 还用于运行路由协议, 建立 DCN全网路由。
8、 如权利要求 7所述的系统, 其特征在于,
所述网元, 具体用于: 针对与相邻网元之间的具有物理连接的一条链 路, 发起 MPPP LCP协商以获取对端网元的 EPD; 在所述 MPPP LCP协商 成功之后, 判断获取到的对端网元的 EPD与已经建立成功的 DCN通道的 EPD是否相同; 如果相同, 则形成已经建立成功的 DCN通道与该条链路的 多链绑定关系; 如果不相同, 则创建新的 DCN通道, 并形成该新的 DCN 通道与该条链路的多链绑定关系,发起 MPPP NCP协商,在所述 MPPP NCP 协商成功之后,所述新的 DCN通道建立成功,其中,新的 DCN通道的 EPD 为通过 MPPP LCP协商获取到的对端网元的 EPD。
9、 如权利要求 7或 8所述的系统, 其特征在于, 所述接入网元, 具体用于: 釆用 PPP扩展协议报文对其邻居网元进行 初始化配置;
所述网络管理终端, 具体用于: 基于对接入网元的各邻居网元配置的
IP地址, 远程登录到接入网元的各邻居网元, 并通过接入网元的各邻居网 元依次对其它非接入网元进行初始化配置。
10、 如权利要求 7或 8所述的系统, 其特征在于, 所述初始化配置包 括配置 IP地址和网管通道 VLAN信息。
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