WO2012068841A1

WO2012068841A1 - Digital microware device, network and network management data transmission method

Info

Publication number: WO2012068841A1
Application number: PCT/CN2011/074238
Authority: WO
Inventors: 高志兴; 王含帆; 吴华
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-24
Filing date: 2011-05-18
Publication date: 2012-05-31
Also published as: CN102480413A; CN102480413B

Abstract

The present invention provides a digital microwave device, a network and a data transmission method. The digital microwave device includes an In Door Unit (IDU) and an Out Door Unit (ODU). The IDU includes a Central Processing Unit (CPU), a switch chip, a programmable logic device, a first path and a second path. When working in a layer 3 routing mode, the digital microwave device forwards packets through the second path according to the routing searched out by the CPU. When working in a layer 2 switch mode, the digital microware device forwards the packets directly in the layer 2 sub-network through the first path. A layer 2 and layer 3 combination network construction manner is introduced in the present invention, microwave devices working in two modes can be connected directly with net interface without special configuration, the network construction is flexible, and the stability and controllability of network management paths of microwave network elements are improved.

Description

数字微波设备、网络及网管数据传输方法技术领域本发明涉及通信领域，具体而言，涉及一种数字啟波设备、网络及网管数据传输方法。背景技术微波通信作为现代无线通信的先行者，一直在通信领域起着举足轻重的作用，作为一种快速的通信手段，在移动网络中扮演着不可或缺的角色。无论是在移动接入网络，还是在移动城域网络和核心网络中，随处都可以看到微波设备的身影，尤其在应急通信中，微波更是一个不可替代的手段。对微波网元的监控和管理也越来越成为关注的焦点。组成微波通信的微波站点之间是釆用点到点的传输方式，通过地面视距进行信息传播的。通常，微波站点之间釆用线型、环型或树型的拓朴结构进行链接。这种连接方式，决定了在进行微波组网时，对网元的管理也需要釆用相应的方式。对于微波网元的管理，目前都是通过 IP地址管理实现的：网元上都有专门的网管接口，使用专用通道进行网管数据传输，釆用 TCP/IP传输协议（通用性好，便于网络的搭建和维护），釆用网管服务器进行集中管理。单个网元既是一个数据源设备，也是一个数据转发设备，它可以通过网管接口将自己的网管数据和后继设备的数据向上一级传送。将网管服务器连接在处于最上层的网元，就可以管理到整个网络中的所有网元了。因此，单个网元既是一个数据源设备，也是一个数据转发设备。因而，在微波设备组网时，对于网元的网管口连接方式和数据包路由方式，是必须要考虑的问题。目前，在 ^啟波组网时主要有以下两种方式：第一种方式，二层交换 +默认网关 +静态路由。在这种方式下，网元都被配置二层交换方式，所有网元被划分在同一子网，使用相同网段内的 IP地址。当该子网中的设备需要访问其它子网的设备时，釆用两种途径，使用静态路由访问下一级的设备，使用默认网关访问上一级的设备，也就是说如果某设备的后继设备存在于多个网段中，就需要在该设备中添加多条静态路由。这种方式的缺点是维护管理较为麻烦，首先，需要在每个设备中添加静态路由和默认网关，其次，当网络发生变化时，需要重新修改静态路由和默认网关。优点是，当网络结构较稳定时，只需要配置一次静态路由和默认网关，之后就再不需要维护和管理。第二种方式是动态路由。每个设备上都运行一个动态路由协议，每个设备相当于一个路由器，当开启动态路由功能后，设备可以自动学习和更新路由。这种方式的缺点在于路由学习和更新的效率取决于使用的路由协议和网络规模，且增加了设备的复杂度。优点是维护管理方面，不需要配置静态路由和默认网关等，当网络结构发生变化时，也不需要进行任何的修改操作，设备会自动更新路由表。申请号为 CN200910261177.6 的中国专利公开了一种组网方案，其釆用的技术方案是：在汇聚层站点使用三层路由方式，在接入层使用二层交换方式。该发明虽然在组网方式上更加灵活，但还是存在以下不足：同时涉及业务通道和网管通道，在汇聚层和接入层需要使用不同的设备，混合组网模式被限制在汇聚层和接入层。发明内容本发明的主要目的在于提供一种数字微波设备、网络及数据传输方法，以至少解决上述啟波网元在网管组网不够灵活的问题。根据本发明的一个方面，提供了一种数字微波设备，包括：室内工作单元 IDU ( In Door Unit, 简称 IDU ) 和室外工作单元 ODU ( Out Door Unit, 简称 ODU )。其中，室内工作单元 IDU包括：中央处理器 CPU, 设置为在数据包转发过程中的路由查找；交换芯片 SWITCH, 设置为数据包的转发；可编程逻辑器件 FPGA ( Field Programmable Gate Array, 简称 FPGA ), 设置为将数据包编码后，传输到室外工作单元 ODU进行发送，或者将室外工作单元 ODU接收到的数据包进行解码；当数字微波设备工作在三层路由模式下，根据中央处理器查找到的路由将数据包通过第二通道进行转发；当数字微波设备工作在二层交换模式下，将数据包通过第一通道在二层子网中直接转发；第一通道，设置为传输交换芯片与可编程逻辑器件之间的数据包；第二通道，设置为传输交换芯片经中央处理器至可编程逻辑器件之间的数据包。优选地，当数字微波设备工作在三层路由模式下时，第一通道被禁用；当数字微波设备工作在二层交换模式下时，第一通道被打开。根据本发明的另一方面，提供了一种用于数字微波设备的网管数据传输的网络，包括：至少一个二层子网，二层子网至少包括一跳网元，该网元由前文所述的数字微波设备组成，二层子网内的数字微波设备工作在二层交换模式下；至少一个三层网络，三层网络至少包括一跳网元，该网元由前文所述的数字微波设备组成，三层网络内的数字微波设备工作在三层路由模式下；二层子网之间通过三层网络连接。优选地，根据二层子网内的数字微波设备的网口的带宽、数字微波设备的 CPU处理能力、每个数字微波设备的平均占用的网络带宽和二层子网中的平均广播数，确定二层子网能够容纳的数字微波设备的数目。优选地，用于数字微波设备的网管数据传输的网络的拓朴结构为线型、环型或树型。优选地，树型网络的才艮节点为三层网络。优选地，通过数字微波设备的网管口进行该数字微波设备的二层交换模式和三层路由模式的切换。才艮据本发明的又一方面，提供了一种网管数据传输方法，包括：当工作在三层路由模式下的数字微波设备接收到需转发的网管数据时，进行下一跳的路由查找；根据所查找到的下一跳路由将网管数据通过第二通道进行转发。优选地，还包括：当工作在二层交换模式下的数字微波设备接收到需转发的网管数据时，将网管数据通过第一通道在二层子网中直接转发。通过本发明，引入了一种二三层混合组网的方式，工作在两种模式下的设备可以直接通过网口连接，不需要特殊配置，组网灵活，提高微波网元的网管通道的稳定性和可管理性。附图说明此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：图 1是根据本发明实施例的数字微波传输设备的内部结构示意图；图 2是根据本发明实施例的二三层设备连接示意图；图 3是才艮据本发明实施例一的混合组网方案在线型网络中的应用示意图；图 4是根据本发明实施例二的混合组网方案在环型网络中的应用示意图；图 5是才艮据本发明实施例三混合组网方案在树型网络中的应用示意图；以及图 6是根据本发明实施例的网管数据传输方法流程图。具体实施方式下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。图 1是根据本发明实施例的数字微波传输设备的内部结构示意图，如图 1 所示，该设备中与本发明相关的部分，包括：室内工作单元 IDU 101和室外工作单元 ODU 105。其中，室内工作单元 IDU 101包括：中央处理器 CPU 102、交换芯片 SWITCH 103、和可编程還辑器件 FPGA 104。在交换芯片 SWITCH 103 与可编程逻辑器件 FPGA 104之间设置有第一通道 120; 在交换芯片 SWITCH 103经中央处理器 CPU 102至可编程逻辑器件 FPGA 104之间设置有第二通道 121。因为微波设备是成对传输数据的，所以对应的还有另一个相同的设备，两个设备构成一跳微波传输链路。在网管数据输送过程中，中央处理器 CPU 102负责产生本网元的数据，在数据包转发过程中查找路由；交换芯片 SWITCH 103负责数据包的转发； FPGA 104 负责将数据包编解码，送到中频部分进行发送，或者解析中频部分接收到的数据。在本实施例中， IDU 101有两种工作模式：二层交换和三层路由。如果工作在三层路由模式下， IDU 101中， SWITCH 103与 FPGA 104之间的第一通道 120被禁用，同样在 IDU 106中， SWITCH 108与 FPGA 109之间的第一通道也被禁用， SWITCH 108与 FPGA 109之间的数据传送经过第二通道 121; IDU 101和 IDU 106的 IP地址配置在不同的网段， IDU 101与 IDU 106之间的网管数据传送需要经过 CPU 102和 CPU 107, CPU 102和 CPU 107在数据包转发过程中需要找路由。当工作在二层交换模式下， IDU 101中， SWITCH 103 与 FPGA 104之间的第一通道 120被打开，同样在 IDU 106中， SWITCH 108 与 FPGA 109之间的第一通道也被打开， IDU 101和 IDU 106的 IP地址在相同的网段， IDU 101与 IDU 106之间的数据传送不需要经过 CPU 102和 CPU 107。以上列出部件是该设备中与本发明相关的部分，不相关部分属于现有技术，在 jtb不作详细描述。在本实施例中，数字微波设备支持两种网管通道工作模式，可以根据需要切换工作模式，切换时只需要通过软件修改相关参数，与现有的数字微波设备相比，使用更加灵活方便。图 2是根据本发明实施例的二三层设备连接示意图，如图 2所示，可以按以下步骤进行设备的配置和连接：步骤 S201. 将 IDU 205和 IDU 208配置成三层路由模式，此时 IDU 205和 IDU 208内部^ ¹断开 FPGA与 SWITCH之间的通道。步骤 S202. 将 IDU 205和 IDU 208配置不同网段的 IP地址，这样， IDU 205 与 IDU 208之间传送网管数据时就需要查找路由。步 4聚 S203. IDU 201 , IDU 204、 IDU 209、 IDU 212 己置成二层交换模式，此时 IDU 201、 IDU 204、 IDU 209、 IDU 212内部^ ¹连通 FPGA与 SWITCH 之间的通道。步 4聚 S204. 为 IDU 201、IDU 204分配一个与 IDU 205 目同网段的 IP地址，这样， IDU 201与 IDU 204之间传送网管数据时不需要查找路由。步 4聚 S205. 为 IDU 209、IDU 212分配一个与 IDU 208 目同网段的 IP地址，这样， IDU 209与 IDU 212之间传送网管数据时不需要查找路由。步骤 S206. 使用双绞线连接 IDU 204与 IDU 205的网管口，连接 IDU 208 与 IDU 209的网管口；步骤 S207. 按照以上步骤，根据需要对网络中的其它网元进行配置。本实施中，如果两个工作在三层路由模式下的网元之间存在若千个工作在二层交换模式下的网元，那么这两个工作在三层交换模式下的网元之间的路由信息交换是不受影响的。图 3是才艮据本发明实施例一的混合组网方案在线型网络中的应用示意图，如图 3所示，可以进行如下组网实施步 4聚：步骤 S301. 才艮据网元网口的带宽、网元的 CPU处理能力、每个网元平均占用的网络带宽、网络中平均广播数，计算出一个二层网络能够容纳的网元数目，假设是 N跳。步骤 S302.当该线型网络的网元数目大于 N跳时，将网络分成若千个网元数目小于 N跳的子网络；当线型网络的网元数目小于等于 N跳时，可以不用划分。步骤 S303.将连接两个子网络的一跳设备配置成三层路由模式，将各个子网络中的设备都配置成二层交换模式。图 4是才艮据本发明实施例二的混合组网方案在环型网络中的应用示意图；如图 4所示，可以进行如下组网实施步 4聚：步骤 S401.才艮据网元网口的带宽、网元的 CPU处理能力、每个网元平均占用的带宽、网络中平均广播数，计算出一个二层网络能够容纳的网元数目，假设是^兆。步骤 S402.当环型网络的网元数目大于 N跳时，将网络分成若千个网元数目小于 N跳的子网络，至少划分成 2个子网络；当环型网络的网元数目小于等于 N跳时，按照网元数目将网络划分成 2个子网络。步骤 S403.将连接两个子网络的一跳设备配置成三层路由模式，将各个子网络中的设备配置成二层交换模式。在上述的网络中，一个二层网络就是一个广播域，两个二层网络之间通过工作在三层路由模式下的设备连接，就可以将广播域隔离，打破环网可能造成的广播风暴。图 5是才艮据本发明实施例三混合组网方案在树型网络中的应用示意图；如图 5所示，可以进行如下的组网实施步骤：步骤 S501 才艮据网元网口的带宽、网元的 CPU处理能力、每个网元平均占用的带宽、网络中平均广播数，计算出一个二层网络能够容纳的网元数目，假设是！^跳。步骤 S502 计算整个树型网络的网元数目，若网元数目小于 N, 则将网络中的所有网元配置成二层交换模式，若网元数目大于 N, 执行步骤 S503。步骤 S503 从树型网络的根节点开始，计算每个分支上的网元数目，假设现在又有 m 个分支，每个分支上的网元数目分别是 Nl,N2...Nm。若 N1 , N2...Nm都小于 N, 则将该树型结构的根节点设备配置成三层路由模式，其它设备全部配置成二层交换模式；若 Nl,N2...Nk大于 N, 而 Nk+l ...Nm(k<m)都小于 N, 则将该树型结构的根节点设备配置成三层路由模式，将 k+l ...m分支配置成二层交换模式；对于 1,2...k分支，继续执行步骤 S504。步骤 S504 1,2...k分支的结构应该分为两种：线型和 †型。对于线性结构的分支，按照本方案在线性结构中的实施方案进行处理；对于树型结构的分支，以该分支的根节点为起始，重新跳转到步骤 S502开始执行。图 6是根据本发明实施例的网管数据传输方法流程图，如图 6所示，包括以下步 4聚：步骤 S601 ,当工作在三层路由模式下的数字微波设备接收到需转发的网管数据包时，进行下一跳的路由查找；步骤 S602,根据所查找到的下一跳路由将网管数据包通过第二通道进行转发。其中，在上述的方法中，当接收网管数据包的数字微波设备是工作在二层交换模式下是，则将网管数据包通过第一通道在二层子网中直接转发。在本实施例中，网管数据可以在两种工作模式下的微波设备中灵活的转发，提高了微波网元的网管通道的稳定性和可管理性。在本发明的上述实施例中，引入了一种二三层混合组网方式，工作在两种模式下的设备可以直接通过网口连接，不需要特殊配置。本组网方式适合三种基本的微波组网拓朴，即线型、环型和树型。工作在三层路由模式下的设备可以起到隔离广播域的作用，抑制广播数据的传播；同时提供子网间的路由功能。在一个混合网络中，工作在三层路由模式下的设备之间可以进行正常的路由学习和更新，工作在二层交换模式下的设备只转发路由协议相关数据包，不对其做任何处理，因此路由协议在混合组网方式下可以正常运行。混合网络中的二层设备上只需要将默认网关配置成与该二层设备距离最近的上一级三层设备的 IP地址。通过本发明，使得微波网元的网管组网更加灵活，提高了微波网元的网管通道的稳 -定性和可管理性。显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的 ^"神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。 The present invention relates to the field of communications, and in particular to a digital starter device, a network, and a network management data transmission method. BACKGROUND OF THE INVENTION Microwave communication, as a pioneer in modern wireless communication, has always played a pivotal role in the field of communications. As a fast means of communication, microwave communication plays an indispensable role in mobile networks. Whether in the mobile access network, mobile metro network and core network, microwave devices can be seen everywhere, especially in emergency communications, microwave is an irreplaceable means. The monitoring and management of microwave network elements has also become a focus of attention. The microwave stations that make up the microwave communication use a point-to-point transmission method to transmit information through the ground line of sight. Typically, microwave sites are linked by a linear, ring or tree topology. This type of connection determines that the management of the network element also requires a corresponding method when performing microwave networking. The management of microwave network elements is currently implemented through IP address management: The network element has a dedicated network management interface, which uses a dedicated channel for network management data transmission, and uses TCP/IP transmission protocol (good versatility, easy network) Set up and maintain), use the network management server for centralized management. A single network element is a data source device and a data forwarding device. It can transmit its own network management data and subsequent device data to the next level through the network management interface. By connecting the network management server to the uppermost network element, you can manage all the network elements in the entire network. Therefore, a single network element is both a data source device and a data forwarding device. Therefore, when the microwave device is connected to the network, the network management port connection mode and the packet routing mode of the network element are issues that must be considered. At present, there are two main ways in networking: ^ The first mode, Layer 2 switching + default gateway + static routing. In this mode, NEs are configured in Layer 2 switching mode. All NEs are classified on the same subnet and use IP addresses in the same network segment. When devices in the subnet need to access devices on other subnets, use two methods to access the next-level device using the static route, and use the default gateway to access the upper-level device, that is, if the successor of a device If a device exists on multiple network segments, you need to add multiple static routes to the device. This way The disadvantage is that maintenance management is more troublesome. First, you need to add static routes and default gateways to each device. Second, when the network changes, you need to modify the static routes and default gateways. The advantage is that when the network structure is stable, only one static route and the default gateway need to be configured once, and then no maintenance or management is required. The second way is dynamic routing. Each device runs a dynamic routing protocol. Each device is equivalent to a router. When dynamic routing is enabled, the device can automatically learn and update routes. The disadvantage of this approach is that the efficiency of routing learning and updating depends on the routing protocol and network size used, and increases the complexity of the device. The advantage is maintenance management. There is no need to configure static routes and default gateways. When the network structure changes, no modification is required, and the device automatically updates the routing table. The Chinese patent application No. CN200910261177.6 discloses a networking scheme, and the technical solutions adopted are: a layer 3 routing mode is used at the aggregation layer site, and a layer 2 switching mode is used in the access layer. Although the invention is more flexible in the networking mode, it still has the following disadvantages: It involves both the service channel and the network management channel, and different devices are required at the aggregation layer and the access layer, and the hybrid networking mode is restricted to the aggregation layer and access. Floor. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a digital microwave device, a network, and a data transmission method, so as to at least solve the problem that the above-mentioned network element is not flexible enough in the network management network. According to an aspect of the present invention, a digital microwave device includes: an indoor unit (IDU) and an outdoor unit ODU (Outdoor Unit, ODU for short). The indoor work unit IDU includes: a central processing unit CPU, which is set to route lookup during packet forwarding; a switching chip SWITCH, which is set to forward data packets; a programmable logic device FPGA (Field Programmable Gate Array, FPGA for short) After the data packet is encoded, it is transmitted to the outdoor working unit ODU for transmission, or the data packet received by the outdoor working unit ODU is decoded; when the digital microwave device works in the three-layer routing mode, it is found according to the central processing unit. The route forwards the data packet through the second channel; when the digital microwave device works in the layer 2 switching mode, the data packet is directly forwarded in the second layer subnet through the first channel; the first channel is set to transmit the switching chip and A data packet between programmable logic devices; a second channel, configured to transmit data packets between the switching chip and the programmable logic device through the central processing unit. Preferably, when the digital microwave device operates in the three-layer routing mode, the first channel is disabled; when the digital microwave device operates in the second layer switching mode, the first channel is opened. According to another aspect of the present invention, a network for network management data transmission of a digital microwave device is provided, including: at least one Layer 2 subnet, and the Layer 2 subnet includes at least one hop network element, where the network element is provided by the foregoing The digital microwave device is configured, and the digital microwave device in the second layer subnet works in the layer 2 switching mode; at least one layer 3 network, the layer 3 network includes at least one hop network element, and the network element is digital microwave as described above The device consists of digital microwave devices in the Layer 3 network working in Layer 3 routing mode; Layer 2 subnets are connected through a Layer 3 network. Preferably, the bandwidth is determined according to the bandwidth of the network port of the digital microwave device in the second layer subnet, the CPU processing capability of the digital microwave device, the average occupied network bandwidth of each digital microwave device, and the average number of broadcasts in the Layer 2 subnet. The number of digital microwave devices that a Layer 2 subnet can accommodate. Preferably, the topology of the network for network management data transmission of the digital microwave device is a line type, a ring type or a tree type. Preferably, the talent node of the tree network is a three-layer network. Preferably, the switching between the Layer 2 switching mode and the Layer 3 routing mode of the digital microwave device is performed through a network port of the digital microwave device. According to still another aspect of the present invention, a network management data transmission method is provided, including: when a digital microwave device operating in a Layer 3 routing mode receives network management data to be forwarded, performing a next hop route search; The network management data is forwarded through the second channel according to the found next hop route. Preferably, the method further includes: when the digital microwave device working in the Layer 2 switching mode receives the network management data to be forwarded, the network management data is directly forwarded in the second layer subnet through the first channel. With the present invention, a two-layer and three-layer hybrid networking mode is introduced. The devices working in the two modes can be directly connected through the network port, and no special configuration is required. The networking is flexible, and the stability of the network management channel of the microwave network element is improved. Sex and manageability. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawing: 1 is a schematic diagram of an internal structure of a digital microwave transmission device according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a connection between two and three layers of devices according to an embodiment of the present invention; FIG. 3 is a hybrid networking solution according to Embodiment 1 of the present invention; FIG. 4 is a schematic diagram of an application of a hybrid networking solution in a ring network according to Embodiment 2 of the present invention; FIG. 5 is a schematic diagram of a hybrid networking solution according to the embodiment of the present invention in a tree network. FIG. 6 is a flowchart of a network management data transmission method according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. 1 is a schematic diagram showing the internal structure of a digital microwave transmission apparatus according to an embodiment of the present invention. As shown in FIG. 1, the parts related to the present invention in the apparatus include: an indoor working unit IDU 101 and an outdoor working unit ODU 105. The indoor work unit IDU 101 includes: a central processing unit CPU 102, a switch chip SWITCH 103, and a programmable device FPGA 104. A first channel 120 is disposed between the switch chip SWITCH 103 and the programmable logic device FPGA 104; a second channel 121 is disposed between the switch chip SWITCH 103 and the central processor CPU 102 to the programmable logic device FPGA 104. Since the microwave devices transmit data in pairs, there is another identical device, and the two devices constitute a one-hop microwave transmission link. In the network management data transmission process, the central processing unit CPU 102 is responsible for generating the data of the local network element, and searching for the routing during the data packet forwarding process; the switching chip SWITCH 103 is responsible for forwarding the data packet; and the FPGA 104 is responsible for encoding and decoding the data packet and sending it to the data packet. The IF portion transmits, or parses the data received by the IF portion. In this embodiment, the IDU 101 has two modes of operation: Layer 2 switching and Layer 3 routing. If operating in Layer 3 routing mode, the first channel 120 between the SWITCH 103 and the FPGA 104 is disabled in the IDU 101. Also in the IDU 106, the first channel between the SWITCH 108 and the FPGA 109 is also disabled, SWITCH The data transfer between the 108 and the FPGA 109 passes through the second channel 121; the IP addresses of the IDU 101 and the IDU 106 are configured on different network segments, and the network management data transfer between the IDU 101 and the IDU 106 needs to pass through the CPU 102 and the CPU 107, and the CPU. 102 and CPU 107 in packet transfer Need to find a route during the process. When operating in Layer 2 switching mode, the first channel 120 between the SWITCH 103 and the FPGA 104 is turned on in the IDU 101. Also in the IDU 106, the first channel between the SWITCH 108 and the FPGA 109 is also turned on, IDU The IP addresses of 101 and IDU 106 are on the same network segment, and data transfer between IDU 101 and IDU 106 does not need to pass through CPU 102 and CPU 107. The components listed above are part of the device that are relevant to the present invention, and the unrelated portions are prior art and are not described in detail in jtb. In this embodiment, the digital microwave device supports two network management modes, and can switch the working mode according to requirements. When switching, only the software needs to modify related parameters, which is more flexible and convenient than the existing digital microwave equipment. 2 is a schematic diagram of a connection between a Layer 2 and Layer 3 device according to an embodiment of the present invention. As shown in FIG. 2, the device may be configured and connected according to the following steps: Step S201. Configure the IDU 205 and the IDU 208 into a Layer 3 routing mode. The IDU 205 and the IDU 208 internal ^ ¹ disconnect the channel between the FPGA and the SWITCH. Step S202. The IDU 205 and the IDU 208 are configured with IP addresses of different network segments, so that the route needs to be searched when the network management data is transmitted between the IDU 205 and the IDU 208. Step 4 gathers S203. IDU 201, IDU 204, IDU 209, and IDU 212 are set to the Layer 2 switching mode. At this time, the IDU 201, IDU 204, IDU 209, and IDU 212 internal ¹ connect the channel between the FPGA and the SWITCH. Step 4: S204. Assign an IP address to the IDU 201 and the IDU 204 in the same network segment as the IDU 205. Thus, the IDU 201 and the IDU 204 do not need to find a route when transmitting the network management data. Step 4: S205. Assign an IP address to the IDU 209 and the IDU 212 in the same network segment as the IDU 208. Therefore, the IDU 209 and the IDU 212 do not need to find a route when transmitting the network management data. Step S206. Connect the IDU 204 and the network management port of the IDU 205 by using a twisted pair cable, and connect the IDU 208 and the network management port of the IDU 209; Step S207. According to the above steps, configure other network elements in the network as needed. In this implementation, if there are thousands of network elements working in the Layer 2 switching mode between two network elements working in the Layer 3 routing mode, the two work between the network elements in the Layer 3 switching mode. The routing information exchange is unaffected. FIG. 3 is a schematic diagram of an application of the hybrid networking solution in an online network according to the first embodiment of the present invention. As shown in FIG. 3, the following networking implementation steps can be performed: Step S301. According to the network element network port The bandwidth, the CPU processing capacity of the network element, the average network bandwidth occupied by each network element, and the average number of broadcasts in the network, calculate the number of network elements that a Layer 2 network can accommodate, assuming N-hop. Step S302: When the number of network elements of the line type network is greater than N hops, the network is divided into sub-networks with a number of network elements less than N hops; when the number of network elements of the line type network is less than or equal to N hops, the network may not be divided. . Step S303. Configure a hop device that connects the two sub-networks into a Layer 3 routing mode, and configure devices in each sub-network to be in Layer 2 switching mode. FIG. 4 is a schematic diagram of the application of the hybrid networking solution according to the second embodiment of the present invention in a ring network; as shown in FIG. 4, the following networking implementation steps can be performed: Step S401. The bandwidth of the interface, the CPU processing capacity of the network element, the average occupied bandwidth of each network element, and the average number of broadcasts in the network, calculate the number of network elements that a Layer 2 network can accommodate, assuming that it is ^mega. Step S402. When the number of network elements of the ring network is greater than N hops, divide the network into sub-networks with a number of network elements less than N hops, and divide into at least two sub-networks; when the number of network elements of the ring network is less than or equal to N When hopping, the network is divided into two sub-networks according to the number of network elements. In step S403, the one-hop device connecting the two sub-networks is configured in a three-layer routing mode, and the devices in each sub-network are configured in a two-layer switching mode. In the above network, a Layer 2 network is a broadcast domain. The two Layer 2 networks can be connected to each other through devices connected in Layer 3 routing mode to isolate the broadcast domain and break the broadcast storm caused by the ring network. FIG. 5 is a schematic diagram of the application of the hybrid networking solution in the tree network according to the embodiment of the present invention; as shown in FIG. 5, the following network implementation steps may be performed: Step S501: According to the bandwidth of the network element network port The CPU processing power of the network element, the average occupied bandwidth of each network element, and the average number of broadcasts in the network, calculate the number of network elements that a Layer 2 network can accommodate, assuming! ^ Jump. In the step S502, the number of the network elements of the entire tree network is calculated. If the number of the network elements is less than N, all the network elements in the network are configured in the Layer 2 switching mode. If the number of the network elements is greater than N, step S503 is performed. Step S503 starts from the root node of the tree network, and calculates the number of network elements on each branch. It is assumed that there are now m branches, and the number of network elements on each branch is N1, N2, ..., Nm, respectively. If N1, N2...Nm are both smaller than N, the root node device of the tree structure is configured in a three-layer routing mode, and all other devices are configured in a Layer 2 switching mode; if Nl, N2...Nk is greater than N, And Nk+l ... Nm (k < m) are less than N, then the root node device of the tree structure is configured into a three-layer routing mode, and the k+l ... m branches are configured into a two-layer switching mode; For the 1, 2...k branch, step S504 is continued. The structure of the steps S504 1, 2...k branches should be divided into two types: line type and † type. For the branch of the linear structure, the implementation in the linear structure according to the present scheme is processed; for the branch of the tree structure, starting from the root node of the branch, the process jumps to step S502 to start execution. FIG. 6 is a flowchart of a network management data transmission method according to an embodiment of the present invention. As shown in FIG. 6, the method includes the following steps: Step S601: When a digital microwave device working in a Layer 3 routing mode receives network management data to be forwarded, During the packet, the route search of the next hop is performed. Step S602: The network management data packet is forwarded through the second channel according to the found next hop route. In the foregoing method, when the digital microwave device that receives the network management data packet works in the layer 2 switching mode, the network management data packet is directly forwarded in the second layer subnet through the first channel. In this embodiment, the network management data can be flexibly forwarded in the microwave devices in the two working modes, which improves the stability and manageability of the network management channel of the microwave network element. In the above-mentioned embodiment of the present invention, a two-layer and three-layer hybrid networking mode is introduced, and devices working in the two modes can be directly connected through the network port, and no special configuration is required. This networking mode is suitable for three basic microwave networking topologies, namely line type, ring type and tree type. A device working in Layer 3 routing mode can isolate the broadcast domain and suppress the propagation of broadcast data. It also provides routing between subnets. In a hybrid network, normal routing learning and updating can be performed between devices working in Layer 3 routing mode. Devices operating in Layer 2 switching mode only forward routing protocol-related data packets without any processing. The routing protocol works normally in mixed networking mode. On the Layer 2 device in the hybrid network, you only need to configure the default gateway as the upper-level Layer 3 device that is closest to the Layer 2 device. IP address. Through the invention, the network management network of the microwave network element is more flexible, and the stability and manageability of the network management channel of the microwave network element are improved. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

权利要求书 Claim

1. 一种数字啟波设备，包括：室内工作单元 IDU和室外工作单元 ODU, 其中所述室内工作单元 IDU包括： A digital start-up device, comprising: an indoor work unit IDU and an outdoor work unit ODU, wherein the indoor work unit IDU comprises:

中央处理器 CPU, 设置为在数据包转发过程中的路由查找；交换芯片 SWITCH, 设置为所述数据包的转发； The central processing unit CPU is set to route lookup during packet forwarding; the switching chip SWITCH is set to forward the data packet;

可编程逻辑器件 FPGA, 设置为将数据包编码后，传输到所述室外工作单元 ODU进行发送，或者将所述室外工作单元 ODU接收到的数据包进行解码；当所述数字微波设备工作在三层路由模式下，根据所述中央处理器查找到的路由将所述数据包通过第二通道进行转发；当所述数字微波设备工作在二层交换模式下，将所述数据包通过第一通道在二层子网中直接转发； a programmable logic device FPGA, configured to encode the data packet, transmit to the outdoor working unit ODU for transmission, or decode the data packet received by the outdoor working unit ODU; when the digital microwave device works in three In the layer routing mode, the data packet is forwarded through the second channel according to the route found by the central processor; when the digital microwave device works in the layer 2 switching mode, the data packet is passed through the first channel. Direct forwarding in a Layer 2 subnet;

所述第一通道，设置为传输所述交换芯片与所述可编程逻辑器件之间的数据包； The first channel is configured to transmit a data packet between the switch chip and the programmable logic device;

所述第二通道，设置为传输所述交换芯片经所述中央处理器至所述可编程逻辑器件之间的数据包。 The second channel is configured to transmit a data packet between the switch chip and the programmable logic device via the central processing unit.

2. 根据权利要求 1所述的数字微波设备，其中，当所述数字微波设备工作在三层路由模式下时，所述第一通道被禁用；当所述数字微波设备工作在二层交换模式下时，所述第一通道被打开。 2. The digital microwave device according to claim 1, wherein: when the digital microwave device operates in a three-layer routing mode, the first channel is disabled; when the digital microwave device operates in a layer 2 switching mode When the lower channel is opened, the first channel is opened.

3. —种用于数字微波设备的网管数据传输的网络，包括： 3. A network for network management data transmission of digital microwave devices, including:

至少一个二层子网，所述二层子网至少包括一兆网元，该网元由权利要求 1所述的数字微波设备组成，所述二层子网内的数字微波设备工作在二层交换模式下； At least one layer 2 subnet, the layer 2 subnet includes at least one mega network element, the network element is composed of the digital microwave device of claim 1, and the digital microwave device in the second layer subnet works on the second layer In exchange mode;

至少一个三层网络，所述三层网络至少包括一跳网元，该网元由权利要求 1所述的数字微波设备组成，所述三层网络内的数字微波设备工作在三层路由模式下；所述二层子网之间通过所述三层网络连接。 At least one Layer 3 network, the Layer 3 network includes at least one hop network element, the network element is composed of the digital microwave device of claim 1, and the digital microwave device in the Layer 3 network works in a three-layer routing mode. The Layer 2 subnets are connected by the Layer 3 network.

4. 根据权利要求 3所述的网络，其中，根据所述二层子网内的数字微波设备的网口的带宽、数字微波设备的 CPU处理能力、每个数字微波设备的平均占用的网络带宽和所述二层子网中的平均广播数，确定所述二层子网能够容纳的数字微波设备的数目。 4. The network according to claim 3, wherein: according to the bandwidth of the network port of the digital microwave device in the Layer 2 subnet, the CPU processing capability of the digital microwave device, and the digital processing capability of each digital microwave device The average occupied network bandwidth and the average number of broadcasts in the Layer 2 subnet determine the number of digital microwave devices that the Layer 2 subnet can accommodate.

5. 根据权利要求 3所述的网络，其中，所述用于数字微波设备的网管数据传输的网络的拓朴结构为线型、环型或树型。 The network according to claim 3, wherein the topology of the network for network management data transmission of the digital microwave device is a line type, a ring type or a tree type.

6. 根据权利要求 5所述的网络，其中，树型网络的根节点为三层网络。 6. The network according to claim 5, wherein the root node of the tree network is a three-layer network.

7. 根据权利要求 3-6任一项所述的用于数字微波设备的网管数据传输的网络，其中，通过数字微波设备的网管口进行该数字微波设备的二层交换模式和三层路由模式的切换。 The network for network management data transmission of a digital microwave device according to any one of claims 3-6, wherein the layer 2 switching mode and the layer 3 routing mode of the digital microwave device are performed through a network port of the digital microwave device Switching.

8. —种网管数据传输方法，应用于权利要求 3-7任一项所述的网络，包括：当工作在三层路由模式下的数字微波设备接收到需转发的网管数据时，进行下一跳的路由查找； The network management data transmission method is applied to the network according to any one of claims 3 to 7, which includes: when the digital microwave device operating in the three-layer routing mode receives the network management data to be forwarded, proceed to the next Route lookup for hops;

根据所查找到的下一跳路由将所述网管数据通过第二通道进行转发。 The network management data is forwarded through the second channel according to the found next hop route.

9. 根据权利要求 8所述的网管数据传输方法，包括： 9. The network management data transmission method according to claim 8, comprising:

当工作在二层交换模式下的数字微波设备接收到需转发的网管数据时，将所述网管数据通过第一通道在二层子网中直接转发。 When the digital microwave device working in the Layer 2 switching mode receives the network management data to be forwarded, the network management data is directly forwarded in the second layer subnet through the first channel.