CN110365557A - Method and device for network interconnection - Google Patents
Method and device for network interconnection Download PDFInfo
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
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- H—ELECTRICITY
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- H—ELECTRICITY
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Abstract
本发明公开了一种网络互连的方法及装置，涉及宽带接入通信技术领域，其方法包括：网关接入设备根据数据报文目的IP地址和由家庭网关下发的静态路由条目，判断所述数据报文是发送到外网还是发送到连接家庭网关的路由器；当判断所述数据报文发送到外网时，所述网关接入设备将所述数据报文发送到用于转发到外网的家庭网关；当判断所述数据报文发送到连接家庭网关的路由器时，所述网关接入设备将所述数据报文发送到用于实现网络互连的所述路由器。
The invention discloses a method and device for network interconnection, and relates to the technical field of broadband access communication. Whether the data message is sent to the external network or to the router connected to the home gateway; when it is judged that the data message is sent to the external network, the gateway access device sends the data message to the The home gateway of the network; when it is determined that the data message is sent to the router connected to the home gateway, the gateway access device sends the data message to the router for realizing network interconnection.
Description
技术领域technical field
本发明涉及宽带接入通信技术领域，特别涉及一种网络互连的方法及装置。The invention relates to the technical field of broadband access communication, in particular to a method and device for network interconnection.
背景技术Background technique
家庭网关是位于用户家庭内部的一个网络设备，是连接外部网络与用户家庭网络的枢纽，为人们的日常生活提供了丰富和高效的网络服务。为了增加家庭网关接入设备的数量，或者提高无线网络的覆盖范围和信号强度，很多用户会在家庭网关的LAN(LocalArea Network，局域网)口下再接一个路由器，路由器放置在离家庭网关相对远一点的位置，一部分接入设备直接接入家庭网关，另外一部分接入设备通过路由器来接入家庭网关。具体的场景如附图1所示，家庭网关为接入设备分配地址，PC1获取到家庭网关分配的私网地址192.168.1.2，路由器建一条WAN(Wide Area Network，广域网)连接，获取家庭网关分配的私网地址192.168.1.3，PC2获取路由器分配的私网地址192.168.2.2。所述WAN连接指的是路由器接入外网时建立的一条虚拟通道。PC1访问外部网络时，直接将报文发送至家庭网关，通过家庭网关路由上网。PC2访问外部网络时，先将报文送到路由器，再由路由器WAN连接将报文送至家庭网关实现路由上网。当PC1访问PC2，PC1首先将报文发送到家庭网关，家庭网关查找发往192.168.2.2的路由，查找到了默认路由条目，将报文转发到了WAN侧，也就是转发到了外部网络，PC1访问PC2失败。The home gateway is a network device located inside the user's home. It is the hub connecting the external network and the user's home network, and provides rich and efficient network services for people's daily life. In order to increase the number of devices connected to the home gateway, or to improve the coverage and signal strength of the wireless network, many users will connect a router to the LAN (LocalArea Network, local area network) port of the home gateway. The router is placed relatively far away from the home gateway. At one point, some of the access devices are directly connected to the home gateway, and the other part of the access devices are connected to the home gateway through a router. The specific scenario is shown in Figure 1. The home gateway assigns an address to the access device. PC1 obtains the private network address 192.168.1.2 assigned by the home gateway. PC2 obtains the private network address 192.168.2.2 assigned by the router. The WAN connection refers to a virtual channel established when the router accesses the external network. When PC1 accesses the external network, it directly sends the message to the home gateway, and is routed to the Internet through the home gateway. When PC2 accesses the external network, it first sends the message to the router, and then sends the message to the home gateway through the WAN connection of the router to achieve routing to the Internet. When PC1 accesses PC2, PC1 first sends the packet to the home gateway, and the home gateway searches for the route to 192.168.2.2, finds the default route entry, forwards the packet to the WAN side, that is, to the external network, and PC1 accesses PC2 fail.
为了解决PC1访问PC2失败问题，出现了配置LAN侧静态路由的方法，即在家庭网关上配置一条静态路由条目，该路由条目指明目的地址是192.168.2.2的报文都从192.168.1.3转发出去，这样PC1就能访问PC2。虽然该方法能实现PC1访问PC2，但是有两个不足：一个是PC1发送往PC2的报文上了三层即IP层查找路由，待查找到路由条目后进行三层转发。实际上PC1和路由器都是家庭网关的下挂设备，PC1发送给路由器的报文可以直接在二层桥转发，不需要上到三层也就是IP层去查找路由条目；第二个问题是，一旦路由器WAN连接获取到的地址发生改变，用户必须手动配置静态路由，给用户带来不便。In order to solve the problem of failure of PC1 to access PC2, there is a method of configuring static routing on the LAN side, that is, configuring a static routing entry on the home gateway, and the routing entry indicates that the packets with the destination address of 192.168. In this way, PC1 can access PC2. Although this method can enable PC1 to access PC2, it has two disadvantages: one is that the message sent by PC1 to PC2 goes up to the third layer, that is, the IP layer to search for the route, and performs three-layer forwarding after the routing entry is found. In fact, PC1 and the router are both connected devices of the home gateway. The message sent by PC1 to the router can be forwarded directly on the second-layer bridge, and there is no need to go up to the third layer, that is, the IP layer to find routing entries; the second problem is, Once the address obtained by the router's WAN connection changes, the user must manually configure the static route, which brings inconvenience to the user.
发明内容Contents of the invention
根据本发明实施例提供一种网络互连的方法及装置，用于解决上述现有技术存在的技术问题，完整地实现不同网段接入设备网络互连工作。According to the embodiments of the present invention, a method and device for network interconnection are provided, which are used to solve the technical problems in the above-mentioned prior art, and completely realize the network interconnection work of access devices in different network segments.
根据本发明实施例提供的一种网络互连的方法，包括：A network interconnection method provided according to an embodiment of the present invention includes:
网关接入设备根据数据报文目的IP地址和由家庭网关下发的静态路由条目，判断所述数据报文是发送到外网还是发送到连接家庭网关的路由器；The gateway access device judges whether the data message is sent to the external network or to a router connected to the home gateway according to the destination IP address of the data message and the static routing entry issued by the home gateway;
当判断所述数据报文发送到外网时，所述网关接入设备将所述数据报文发送到用于转发到外网的家庭网关；When it is judged that the data message is sent to the external network, the gateway access device sends the data message to the home gateway for forwarding to the external network;
当判断所述数据报文发送到连接家庭网关的路由器时，所述网关接入设备将所述数据报文发送到用于实现网络互连的所述路由器。When it is determined that the data packet is sent to the router connected to the home gateway, the gateway access device sends the data packet to the router for realizing network interconnection.
优选地，所述网关接入设备根据数据报文目的IP地址和由家庭网关下发的静态路由条目，判断所述数据报文是发送到外网还是发送到连接家庭网关的路由器包括：Preferably, the gateway access device determines whether the data message is sent to the external network or to a router connected to the home gateway according to the destination IP address of the data message and the static routing entry issued by the home gateway, including:
所述网关接入设备根据数据报文目的IP地址查找预存路由表中的静态路由条目；The gateway access device searches for a static routing entry in a pre-stored routing table according to the destination IP address of the data message;
若在所述预存路由表中的静态路由条目查找到与数据报文目的IP地址匹配的路由器IP地址池网段，则所述网关接入设备判断所述数据报发送到连接家庭网关的路由器；If the static routing entry in the pre-stored routing table finds a router IP address pool segment matching the destination IP address of the data message, the gateway access device determines that the data message is sent to the router connected to the home gateway;
若在所述预存路由表中的静态路由条目未查找到与数据报文目的IP地址匹配的路由器IP地址池网段，则所述网关接入设备判断所述数据报发送到外网。If the static routing entry in the pre-stored routing table does not find a router IP address pool network segment that matches the destination IP address of the data message, the gateway access device determines that the data message is sent to the external network.
优选地，所述网关接入设备根据数据报文目的IP地址查找预存路由表中的静态路由条目包括：Preferably, the gateway access device searching the static routing entries in the pre-stored routing table according to the destination IP address of the data message includes:
所述网关接入设备将数据报文目的IP地址与所述静态路由条目中的路由器IP地址池网段进行匹配处理；The gateway access device matches the destination IP address of the data message with the network segment of the router IP address pool in the static routing entry;
若数据报文目的IP地址与所述静态路由条目中的路由器IP地址池网段匹配成功，则所述网关接入设备确定在静态路由条目查找到与数据报文目的IP地址匹配的路由器IP地址池网段；If the destination IP address of the data message matches the network segment of the router IP address pool in the static routing entry successfully, the gateway access device determines that the router IP address matching the destination IP address of the data message is found in the static routing entry pool segment;
若数据报文目的IP地址与所述静态路由条目中的路由器IP地址池网段匹配失败，则所述网关接入设备确定在静态路由条目未查找到与数据报文目的IP地址匹配的路由器IP地址池网段。If the destination IP address of the data message fails to match the network segment of the router IP address pool in the static routing entry, the gateway access device determines that no router IP matching the destination IP address of the data message is found in the static routing entry. The network segment of the address pool.
根据本发明实施例提供的一种接入设备网络互连的方法，包括：A method for network interconnection of access devices provided according to an embodiment of the present invention includes:
家庭网关根据配置给所述路由器的路由器地址池网段和子网掩码，生成包含路由器地址池网段和子网掩码的目的描述符；The home gateway generates a destination descriptor including the router address pool network segment and subnet mask according to the router address pool network segment and subnet mask configured to the router;
家庭网关根据分配给所述路由器的路由器IP地址和所生成的目的描述符，得到包含路由器IP地址和目的描述符的静态路由条目；The home gateway obtains a static routing entry including the router IP address and the destination descriptor according to the router IP address assigned to the router and the generated destination descriptor;
家庭网关收到网关接入设备发送的DHCP(Dynamic Host ConfigurationProtocol，动态主机配置协议)请求报文后，将所得到的静态路由条目发送给所述网关接入设备。After receiving the DHCP (Dynamic Host Configuration Protocol, Dynamic Host Configuration Protocol) request message sent by the gateway access device, the home gateway sends the obtained static routing entry to the gateway access device.
根据本发明实施例提供的一种网络互连的装置，包括：A network interconnection device provided according to an embodiment of the present invention includes:
判断模块，用于根据数据报文目的IP地址和由家庭网关下发的静态路由条目，判断所述数据报文是发送到外网还是发送到连接家庭网关的路由器；A judging module, configured to judge whether the data message is sent to the external network or to a router connected to the home gateway according to the destination IP address of the data message and the static routing entry issued by the home gateway;
发送外网模块，用于当判断所述数据报文发送到外网时，将所述数据报文发送到用于转发到外网的家庭网关；Sending the external network module, used to send the data message to the home gateway for forwarding to the external network when it is judged that the data message is sent to the external network;
网络互连模块，用于当判断所述数据报文发送到连接家庭网关的路由器时，将所述数据报文发送到用于实现网络互连的所述路由器。The network interconnection module is configured to send the data message to the router for network interconnection when it is determined that the data message is sent to the router connected to the home gateway.
优选地，所述判断模块包括：Preferably, the judging module includes:
查找单元，用于根据数据报文目的IP地址查找预存路由表中的静态路由条目；A search unit, configured to search for static routing entries in the pre-stored routing table according to the destination IP address of the data message;
判断单元，用于当在所述预存路由表中的静态路由条目查找到与数据报文目的IP地址匹配的路由器IP地址池网段，则判断所述数据报发送到连接家庭网关的路由器，以及当在所述预存路由表中的静态路由条目未查找到与数据报文目的IP地址匹配的路由器IP地址池网段，则判断所述数据报发送到外网。A judging unit, configured to judge that the datagram is sent to the router connected to the home gateway when the static routing entry in the pre-stored routing table finds a router IP address pool network segment that matches the destination IP address of the datagram, and When the static routing entry in the pre-stored routing table does not find a router IP address pool network segment matching the destination IP address of the data message, it is determined that the data message is sent to the external network.
优选地，所述查找单元包括：Preferably, the search unit includes:
匹配子单元，用于将数据报文目的IP地址与所述静态路由条目中的路由器IP地址池网段进行匹配处理；A matching subunit, configured to match the destination IP address of the data message with the network segment of the router IP address pool in the static routing entry;
查找子单元，用于当数据报文目的IP地址与所述静态路由条目中的路由器IP地址池网段匹配成功，则确定在静态路由条目查找到与数据报文目的IP地址匹配的路由器IP地址池网段，以及当数据报文目的IP地址与所述静态路由条目中的路由器IP地址池网段匹配失败，则确定在静态路由条目未查找到与数据报文目的IP地址匹配的路由器IP地址池网段。The search subunit is used to determine that the router IP address that matches the destination IP address of the data message is found in the static route entry when the destination IP address of the data message matches the network segment of the router IP address pool in the static routing entry. Pool network segment, and when the destination IP address of the data message fails to match the router IP address pool network segment in the static routing entry, it is determined that no router IP address matching the destination IP address of the data message is found in the static routing entry pool network segment.
根据本发明实施例提供的一种网络互连的装置，包括：A network interconnection device provided according to an embodiment of the present invention includes:
生成模块，用于根据配置给所述路由器的路由器地址池网段和子网掩码，生成包含路由器地址池网段和子网掩码的目的描述符；A generating module, configured to generate a destination descriptor including the router address pool network segment and subnet mask according to the router address pool network segment and subnet mask configured for the router;
获取模块，用于根据分配给所述路由器的路由器IP地址和所生成的目的描述符，得到包含路由器IP地址和目的描述符的静态路由条目；An acquisition module, configured to obtain a static routing entry including the router IP address and the destination descriptor according to the router IP address assigned to the router and the generated destination descriptor;
发送模块，用于收到网关接入设备发送的DHCP请求报文后，将所得到的静态路由条目发送给所述网关接入设备。The sending module is configured to send the obtained static route entry to the gateway access device after receiving the DHCP request message sent by the gateway access device.
根据本发明实施例提供的一种网络互连的设备，所述设备包括：处理器，以及与所述处理器耦接的存储器；所述存储器上存储有可在所述处理器上运行的网络互连的程序，所述网络互连的程序被所述处理器执行时根据本公开实施例所提供的网络互连的方法。According to a network interconnection device provided by an embodiment of the present invention, the device includes: a processor, and a memory coupled to the processor; the memory stores network information that can run on the processor. An interconnection program, when the network interconnection program is executed by the processor, according to the network interconnection method provided by the embodiment of the present disclosure.
根据本发明实施例提供的一种计算机存储介质，存储有网络互连的程序，所述网络互连的程序被处理器执行时根据本公开实施例所提供的网络互连的方法。According to a computer storage medium provided by an embodiment of the present invention, a program for network interconnection is stored, and when the program for network interconnection is executed by a processor, according to the method for network interconnection provided by an embodiment of the present disclosure.
根据本发明实施例提供的方案，当接入设备访问外网，目的地址是一个公网地址，与Option121生成的静态路由匹配不上，报文的下一跳地址是家庭网关的地址，最后由家庭网关通过三层转发出去；当接入设备访问路由器下的接入设备，目的地址是路由器地址池网段内的某个地址，与Option121生成的静态路由匹配上，报文的下一条地址是192.168.1.3，家庭网关在二层直接将报文转发到路由器对应的LAN口，再由路由器转发到对应的接入设备，从而实现家庭网关接入设备访问路由器接入设备。According to the solution provided by the embodiment of the present invention, when the access device accesses the external network, the destination address is a public network address, which cannot match the static route generated by Option121, and the next-hop address of the message is the address of the home gateway, and finally the The home gateway forwards through the three layers; when the access device accesses the access device under the router, the destination address is an address in the network segment of the router address pool, which matches the static route generated by Option121, and the next address of the message is 192.168.1.3, the home gateway directly forwards the message to the corresponding LAN port of the router on the second layer, and then the router forwards the message to the corresponding access device, so that the home gateway access device accesses the router access device.
附图说明Description of drawings
图1是本发明实施例提供的一种网络互连的方法流程图；FIG. 1 is a flowchart of a network interconnection method provided by an embodiment of the present invention;
图2是本发明实施例提供的一种网络互连的装置示意图；Fig. 2 is a schematic diagram of a network interconnection device provided by an embodiment of the present invention;
图3是本发明实施例提供的家庭网关接入设备场景图；FIG. 3 is a scene diagram of a home gateway access device provided by an embodiment of the present invention;
图4是本发明实施例提供的DHCP Server下发Option121过程示意图；Fig. 4 is a schematic diagram of the process of issuing Option121 by the DHCP Server provided by the embodiment of the present invention;
图5是本发明实施例提供的PC1访问外网和PC2的过程示意图。FIG. 5 is a schematic diagram of the process of PC1 accessing the external network and PC2 provided by the embodiment of the present invention.
具体实施方式Detailed ways
以下结合附图对本发明的优选实施例进行详细说明，应当理解，以下所说明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。The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
图1是本发明实施例提供的一种网络互连的方法流程图，如图1所示，包括：Fig. 1 is a flow chart of a network interconnection method provided by an embodiment of the present invention, as shown in Fig. 1 , including:
步骤S101：网关接入设备根据数据报文目的IP地址和由家庭网关下发的静态路由条目，判断所述数据报文是发送到外网还是发送到连接家庭网关的路由器；Step S101: The gateway access device determines whether the data message is sent to the external network or to a router connected to the home gateway according to the destination IP address of the data message and the static routing entry issued by the home gateway;
步骤S102：当判断所述数据报文发送到外网时，所述网关接入设备将所述数据报文发送到用于转发到外网的家庭网关；Step S102: When it is judged that the data message is sent to the external network, the gateway access device sends the data message to the home gateway for forwarding to the external network;
步骤S103：当判断所述数据报文发送到连接家庭网关的路由器时，所述网关接入设备将所述数据报文发送到用于实现网络互连的所述路由器。Step S103: When it is determined that the data packet is sent to the router connected to the home gateway, the gateway access device sends the data packet to the router for network interconnection.
其中，所述网关接入设备是指连接家庭网关的网关接入设备；所述网关接入设备将所述数据报文发送到用于实现网络互连的所述路由器，以便由所述路由器根据数据报文目的地址将数据报文转发到连接所述路由器的路由器接入设备。Wherein, the gateway access device refers to a gateway access device connected to a home gateway; the gateway access device sends the data packet to the router for network interconnection, so that the router can use the The destination address of the data packet forwards the data packet to the router access device connected to the router.
其中，所述网关接入设备根据数据报文目的IP地址和由家庭网关下发的静态路由条目，判断所述数据报文是发送到外网还是发送到连接家庭网关的路由器包括：所述网关接入设备根据数据报文目的IP地址查找预存路由表中的静态路由条目；若在所述预存路由表中的静态路由条目查找到与数据报文目的IP地址匹配的路由器IP地址池网段，则所述网关接入设备判断所述数据报发送到连接家庭网关的路由器；若在所述预存路由表中的静态路由条目未查找到与数据报文目的IP地址匹配的路由器IP地址池网段，则所述网关接入设备判断所述数据报发送到外网。Wherein, the gateway access device judges whether the data message is sent to the external network or sent to the router connected to the home gateway according to the destination IP address of the data message and the static routing entry issued by the home gateway, including: the gateway The access device searches the static routing entry in the pre-stored routing table according to the destination IP address of the data message; if the static routing entry in the pre-stored routing table finds the router IP address pool network segment matching the data message destination IP address, Then the gateway access device judges that the datagram is sent to the router connected to the home gateway; if the static routing entry in the pre-stored routing table does not find the router IP address pool network segment matching the datagram destination IP address , the gateway access device determines that the datagram is sent to the external network.
具体地说，所述网关接入设备根据数据报文目的IP地址查找预存路由表中的静态路由条目包括：所述网关接入设备将数据报文目的IP地址与所述静态路由条目中的路由器IP地址池网段进行匹配处理；若数据报文目的IP地址与所述静态路由条目中的路由器IP地址池网段匹配成功，则所述网关接入设备确定在静态路由条目查找到与数据报文目的IP地址匹配的路由器IP地址池网段；若数据报文目的IP地址与所述静态路由条目中的路由器IP地址池网段匹配失败，则所述网关接入设备确定在静态路由条目未查找到与数据报文目的IP地址匹配的路由器IP地址池网段。Specifically, the gateway access device searching for the static routing entry in the pre-stored routing table according to the destination IP address of the data message includes: the gateway access device matching the destination IP address of the data message with the router in the static routing entry The network segment of the IP address pool performs matching processing; if the destination IP address of the data message matches successfully with the network segment of the router IP address pool in the static routing entry, then the gateway access device determines that the static routing entry is found to match the data packet The network segment of the router IP address pool where the destination IP address of the document matches; if the destination IP address of the data message fails to match the network segment of the router IP address pool in the static routing entry, the gateway access device determines that the static routing entry does not Find the network segment of the router IP address pool that matches the destination IP address of the data packet.
根据本发明实施例提供的一种接入设备网络互连的方法，包括：A method for network interconnection of access devices provided according to an embodiment of the present invention includes:
家庭网关根据配置给所述路由器的路由器地址池网段和子网掩码，生成包含路由器地址池网段和子网掩码的目的描述符；The home gateway generates a destination descriptor including the router address pool network segment and subnet mask according to the router address pool network segment and subnet mask configured to the router;
家庭网关根据分配给所述路由器的路由器IP地址和所生成的目的描述符，得到包含路由器IP地址和目的描述符的静态路由条目；The home gateway obtains a static routing entry including the router IP address and the destination descriptor according to the router IP address assigned to the router and the generated destination descriptor;
家庭网关收到网关接入设备发送的DHCP请求报文后，将所得到的静态路由条目发送给所述网关接入设备。After receiving the DHCP request message sent by the gateway access device, the home gateway sends the obtained static routing entry to the gateway access device.
其中，所述静态路由条目是家庭网关收到网关接入设备发送的DHCP请求报文后下发的，且所述网关接入设备接收到家庭网关发送的静态路由条目后，将所述静态路由条目配置到路由表中。Wherein, the static routing entry is issued by the home gateway after receiving the DHCP request message sent by the gateway access device, and after the gateway access device receives the static routing entry sent by the home gateway, the static routing entry Entries are configured into the routing table.
图2是本发明实施例提供的一种网络互连的装置示意图，如图2所示，包括：判断模块201，用于根据数据报文目的IP地址和由家庭网关下发的静态路由条目，判断所述数据报文是发送到外网还是发送到连接家庭网关的路由器；发送外网模块202，用于当判断所述数据报文发送到外网时，将所述数据报文发送到用于转发到外网的家庭网关；网络互连模块203，用于当判断所述数据报文发送到连接家庭网关的路由器时，将所述数据报文发送到用于实现网络互连的所述路由器。FIG. 2 is a schematic diagram of a device for network interconnection provided by an embodiment of the present invention. As shown in FIG. 2 , it includes: a judging module 201, configured to, according to the destination IP address of the data message and the static routing entry issued by the home gateway, Judging whether the data message is sent to the external network or to the router connected to the home gateway; sending the external network module 202, used to send the data message to the user when it is determined that the data message is sent to the external network For forwarding to the home gateway of the external network; the network interconnection module 203 is used to send the data message to the said data message for realizing network interconnection router.
其中，所述判断模块201包括：查找单元，用于根据数据报文目的IP地址查找预存路由表中的静态路由条目；判断单元，用于当在所述预存路由表中的静态路由条目查找到与数据报文目的IP地址匹配的路由器IP地址池网段，则判断所述数据报发送到连接家庭网关的路由器，以及当在所述预存路由表中的静态路由条目未查找到与数据报文目的IP地址匹配的路由器IP地址池网段，则判断所述数据报发送到外网。Wherein, the judging module 201 includes: a search unit, configured to search for a static routing entry in a pre-stored routing table according to the destination IP address of the data message; a judging unit, configured to find a static routing entry in the pre-stored routing table when The router IP address pool network segment that matches the destination IP address of the data message, then it is judged that the data message is sent to the router connected to the home gateway, and when the static routing entry in the pre-stored routing table is not found to match the data message If the destination IP address matches the network segment of the router IP address pool, it is determined that the datagram is sent to the external network.
具体地说，所述查找单元包括：匹配子单元，用于将数据报文目的IP地址与所述静态路由条目中的路由器IP地址池网段进行匹配处理；查找子单元，用于当数据报文目的IP地址与所述静态路由条目中的路由器IP地址池网段匹配成功，则确定在静态路由条目查找到与数据报文目的IP地址匹配的路由器IP地址池网段，以及当数据报文目的IP地址与所述静态路由条目中的路由器IP地址池网段匹配失败，则确定在静态路由条目未查找到与数据报文目的IP地址匹配的路由器IP地址池网段。Specifically, the search unit includes: a matching subunit, used to match the destination IP address of the data message with the network segment of the router IP address pool in the static routing entry; If the IP address of the document is matched successfully with the router IP address pool network segment in the static routing entry, it is determined that the router IP address pool network segment matching the data message destination IP address is found in the static routing entry, and when the data message If the destination IP address fails to match the network segment of the router IP address pool in the static routing entry, it is determined that no router IP address pool network segment matching the destination IP address of the data message is found in the static routing entry.
根据本发明实施例提供的一种网络互连的装置，包括：A network interconnection device provided according to an embodiment of the present invention includes:
生成模块，用于根据配置给所述路由器的路由器地址池网段和子网掩码，生成包含路由器地址池网段和子网掩码的目的描述符；A generating module, configured to generate a destination descriptor including the router address pool network segment and subnet mask according to the router address pool network segment and subnet mask configured for the router;
获取模块，用于根据分配给所述路由器的路由器IP地址和所生成的目的描述符，得到包含路由器IP地址和目的描述符的静态路由条目；An acquisition module, configured to obtain a static routing entry including the router IP address and the destination descriptor according to the router IP address assigned to the router and the generated destination descriptor;
发送模块，用于收到网关接入设备发送的DHCP请求报文后，将所得到的静态路由条目发送给所述网关接入设备。The sending module is configured to send the obtained static route entry to the gateway access device after receiving the DHCP request message sent by the gateway access device.
根据本发明实施例提供的一种网络互连的设备，所述设备包括：处理器，以及与所述处理器耦接的存储器；所述存储器上存储有可在所述处理器上运行的网络互连的程序，所述网络互连的程序被所述处理器执行时根据本公开实施例所提供的网络互连的方法。According to a network interconnection device provided by an embodiment of the present invention, the device includes: a processor, and a memory coupled to the processor; the memory stores network information that can run on the processor. An interconnection program, when the network interconnection program is executed by the processor, according to the network interconnection method provided by the embodiment of the present disclosure.
根据本发明实施例提供的一种计算机存储介质，存储有网络互连的程序，所述网络互连的程序被处理器执行时根据本公开实施例所提供的网络互连的方法。According to a computer storage medium provided by an embodiment of the present invention, a program for network interconnection is stored, and when the program for network interconnection is executed by a processor, according to the method for network interconnection provided by an embodiment of the present disclosure.
其中，所述静态路由条目是家庭网关收到网关接入设备发送的DHCP请求报文后下发的，所述网关接入设备接收到家庭网关发送的静态路由条目后，将所述静态路由条目配置到路由表中。Wherein, the static routing entry is issued by the home gateway after receiving the DHCP request message sent by the gateway access device, and after the gateway access device receives the static routing entry sent by the home gateway, the static routing entry configured in the routing table.
本发明实施例涉及DHCP Option121技术，所述DHCP Option指DHCP报文交互过程中携带的扩展信息，Option121选项可以定义一个或者多个静态路由，每一条静态路由条目由目的描述符和路由IP地址(下一条地址)组成，目的描述符由目的IP地址和掩码长度组成。DHCP客户端收到含有该Option选项的报文后，解析该选项中的静态路由条目，在路由表中添加这些静态路由条目。The embodiment of the present invention relates to the DHCP Option121 technology. The DHCP Option refers to the extended information carried in the DHCP message interaction process. The Option121 option can define one or more static routes, and each static route entry is composed of a purpose descriptor and a route IP address ( Next address), the destination descriptor is composed of destination IP address and mask length. After receiving the message containing the Option, the DHCP client parses the static routing entries in the option and adds these static routing entries to the routing table.
图3是本发明实施例提供的家庭网关接入设备场景图，如图3所示，PC1获取到家庭网关分配的私网地址192.168.1.2，路由器WAN连接获取家庭网关分配的私网地址192.168.1.3，PC2获取路由器分配的私网地址192.168.2.2。Fig. 3 is a scene diagram of a home gateway access device provided by the embodiment of the present invention. As shown in Fig. 3, PC1 obtains the private network address 192.168.1.2 assigned by the home gateway, and the router WAN connection obtains the private network address 192.168 assigned by the home gateway. 1.3, PC2 obtains the private network address 192.168.2.2 assigned by the router.
本发明实施例采用如下方法：家庭网关DHCP Server为路由器WAN连接分配一个IP地址，例如192.168.1.3。为路由器WAN连接分配完地址后，DHCP Server根据分配给路由器的IP地址192.168.1.3和路由器的地址池网段，生成Option121扩展内容，例如:若路由器地址池网段是192.168.2.X，子网掩码是255.255.255.0，则生成Option121的目的描述符是24.192.168.2，下一条地址是192.168.1.3。家庭网关其他LAN口的接入设备DHCP方式获取地址，DHCP Server将Option121内容和IP地址、DNS(Domain Name System，域名系统)、网关等信息一起下发给接入设备，接入设备解析Option121内容，将静态路由条目配置到路由表中。The embodiment of the present invention adopts the following method: the home gateway DHCP Server allocates an IP address, such as 192.168.1.3, for the router WAN connection. After assigning the address for the router WAN connection, the DHCP Server generates Option121 extension content according to the IP address 192.168.1.3 assigned to the router and the address pool network segment of the router. For example: if the router address pool network segment is If the netmask is 255.255.255.0, then the destination descriptor for generating Option121 is 24.192.168.2, and the next address is 192.168.1.3. The access device of the other LAN port of the home gateway obtains the address through DHCP, and the DHCP server sends the Option121 content together with the IP address, DNS (Domain Name System, domain name system), gateway and other information to the access device, and the access device parses the Option121 content , configure a static route entry into the routing table.
本发明涉及DHCP Server模块，所述DHCP Server模块为家庭网关内部的软件模块。DHCP Server模块监听LAN侧接入设备发送的DHCP请求报文，回复接入设备发送的请求报文，为接入设备分配一个可用的私网IP地址，同时携带DNS、网关等扩展选项信息，并维护已分配出去的IP地址信息和接入设备信息。The invention relates to a DHCP Server module, and the DHCP Server module is a software module inside a home gateway. The DHCP Server module monitors the DHCP request message sent by the access device on the LAN side, replies to the request message sent by the access device, allocates an available private network IP address for the access device, and carries extended option information such as DNS and gateway at the same time, and Maintain the assigned IP address information and access device information.
本发明涉及DHCP Option模块，所述DHCP Option模块为家庭网关内部的软件模块。DHCP Option模块生成各个Option选项的扩展信息内容。DHCP Server给接入设备回复报文之前，到该模块获取所有的Option选项内容添加到报文中，回复给接入设备。The invention relates to a DHCP Option module, and the DHCP Option module is a software module inside a home gateway. The DHCP Option module generates the extended information content of each Option option. Before the DHCP Server replies a message to the access device, it goes to this module to obtain all the Option option content, adds it to the message, and replies to the access device.
当路由器WAN连接的地址发生改变，重新生成Option121选项的内容，并重新下发到接入设备，接入设备自动更新静态路由条目，避免了让用户自己配置静态路由的麻烦，为用户带来更好的使用体验。When the address of the WAN connection of the router changes, the content of the Option121 option is regenerated and re-sent to the access device, and the access device automatically updates the static routing entry, which avoids the trouble of configuring the static route for the user and brings more convenience to the user. Good experience.
图4是本发明实施例提供的DHCP Server下发Option121过程示意图，如图4所示，结合附图3的场景说明具体实施步骤：Fig. 4 is a schematic diagram of the process of issuing Option121 by the DHCP Server provided by the embodiment of the present invention. As shown in Fig. 4, the specific implementation steps are described in conjunction with the scene in Fig. 3:
步骤201：家庭网关上配置路由器地址池的地址段和子网掩码，DHCP Option模块根据上述的地址池地址段和子网掩码，生成Option121扩展信息的目的描述符；Step 201: configure the address segment and subnet mask of the router address pool on the home gateway, and the DHCP Option module generates the purpose descriptor of Option121 extended information according to the address segment and subnet mask of the above address pool;
步骤202：路由器建一条DHCP类型的WAN连接，发送DHCP请求报文；Step 202: the router builds a DHCP-type WAN connection, and sends a DHCP request message;
步骤203：DHCP Server为路由器WAN连接分配一个可用的IP地址，发送回复报文，路由器WAN连接获取到IP地址；Step 203: The DHCP Server assigns an available IP address for the router WAN connection, sends a reply message, and the router WAN connection obtains an IP address;
步骤204：DHCP Server将分配给路由器WAN连接的IP地址发送给DHCP Option模块；Step 204: the DHCP Server sends the IP address assigned to the WAN connection of the router to the DHCP Option module;
步骤205：路由器WAN连接IP地址为Option121选项的下一跳IP地址，DHCP Option模块利用步骤201生成的目的描述符和下一跳IP地址，生成完整Option121扩展信息；Step 205: The router WAN connection IP address is the next-hop IP address of the Option121 option, and the DHCP Option module generates complete Option121 extended information using the purpose descriptor and the next-hop IP address generated in step 201;
步骤206：PC1发送DHCP请求报文，Option55请求列表Request List中携带Option121，请求获取Option121选项信息；所述Option55是客户机发送的请求报文中携带的选项，该选项中的内容是客户机希望从DHCP服务器获取到扩展信息的选项；Step 206: PC1 sends a DHCP request message, Option121 is carried in the Option55 request list Request List, and requests to obtain Option121 option information; the Option55 is the option carried in the request message sent by the client, and the content in this option is that the client wants The option to obtain extended information from the DHCP server;
步骤207：DHCP Server选择一个可用的IP地址，并到DHCP Option模块获取PC1请求获取的Option选项信息；Step 207: the DHCP Server selects an available IP address, and obtains the Option option information requested by PC1 from the DHCP Option module;
步骤208：DHCP Option模块返回所有PC1请求获取的Option选项信息，包括Option121选项；Step 208: The DHCP Option module returns all the Option option information requested by PC1, including the Option121 option;
步骤209：DHCP Server将分配的IP地址和所有Option选项信息添加到回复报文中；Step 209: The DHCP Server adds the assigned IP address and all Option information to the reply message;
步骤210：DHCP Server将回复报文发送给PC1；Step 210: the DHCP Server sends the reply message to PC1;
步骤211：PC1收到DHCP报文，解析所有的Option选项，将Option121选项内容中的静态路由配置到路由表中。Step 211: PC1 receives the DHCP message, parses all Option options, and configures the static route in Option121 option content into the routing table.
图5是本发明实施例提供的PC1访问外网和PC2的过程示意图，如图5所示，若PC1获取到家庭网关分配的私网地址192.168.1.2，路由器WAN连接获取家庭网关分配的私网地址192.168.1.3，PC2获取路由器分配的私网地址192.168.2.2，结合附图3的场景说明具体实施步骤：Figure 5 is a schematic diagram of the process of PC1 accessing the external network and PC2 provided by the embodiment of the present invention. As shown in Figure 5, if PC1 obtains the private network address 192.168.1.2 assigned by the home gateway, the router WAN connection obtains the private network assigned by the home gateway The address is 192.168.1.3, and PC2 obtains the private network address 192.168.2.2 assigned by the router. Combined with the scenario in Figure 3, the specific implementation steps are described:
步骤301：PC1应用程序发送数据报文；Step 301: the PC1 application program sends a data packet;
步骤302：根据报文的目的IP地址查找路由条目。若目的IP是192.168.2.X，则转步骤306，否则转步骤303；Step 302: Find a routing entry according to the destination IP address of the message. If the destination IP is 192.168.2.X, then go to step 306, otherwise go to step 303;
步骤303：目的地址不是192.168.2.X，说明应用程序访问的是外网，报文的下一跳IP地址是家庭网关的IP地址192.168.1.1；Step 303: the destination address is not 192.168.2.X, indicating that the application program is accessing the external network, and the next-hop IP address of the message is the IP address of the home gateway 192.168.1.1;
步骤304：PC1将报文发送至家庭网关；Step 304: PC1 sends the message to the home gateway;
步骤305：家庭网关查找路由条目，将报文从相应的WAN连接转发到外网；Step 305: the home gateway searches for routing entries, and forwards the message from the corresponding WAN connection to the external network;
步骤306：匹配上静态目录条目，报文的下一跳IP地址是路由器WAN连接的IP地址192.168.1.3；Step 306: match the static directory entry, the next-hop IP address of the message is the IP address 192.168.1.3 of the router WAN connection;
步骤307：PC1将报文直接发往路由器WAN连接；Step 307: PC1 sends the message directly to the router WAN connection;
步骤308：路由器WAN连接收到报文，将报文转发发到PC2。Step 308: The router WAN connection receives the message, and forwards the message to PC2.
至此，流程结束。At this point, the process ends.
根据本发明实施例提供的方案，当接入设备访问外网，目的地址是一个公网地址，与Option121生成的静态路由匹配不上，报文的下一跳地址是家庭网关的地址，最后由家庭网关通过三层转发出去；当接入设备访问路由器下的接入设备，目的地址是路由器地址池网段内的某个地址，与Option121生成的静态路由匹配上，报文的下一条地址是192.168.1.3，家庭网关在二层直接将报文转发到路由器对应的LAN口，再由路由器转发到对应的接入设备，从而实现家庭网关接入设备访问路由器接入设备。According to the solution provided by the embodiment of the present invention, when the access device accesses the external network, the destination address is a public network address, which cannot match the static route generated by Option121, and the next-hop address of the message is the address of the home gateway, and finally the The home gateway forwards through the three layers; when the access device accesses the access device under the router, the destination address is an address in the network segment of the router address pool, which matches the static route generated by Option121, and the next address of the message is 192.168.1.3, the home gateway directly forwards the message to the corresponding LAN port of the router on the second layer, and then the router forwards the message to the corresponding access device, so that the home gateway access device accesses the router access device.
尽管上文对本发明进行了详细说明，但是本发明不限于此，本技术领域技术人员可以根据本发明的原理进行各种修改。因此，凡按照本发明原理所作的修改，都应当理解为落入本发明的保护范围。Although the present invention has been described in detail above, the present invention is not limited thereto, and various modifications can be made by those skilled in the art based on the principle of the present invention. Therefore, any modifications made according to the principles of the present invention should be understood as falling within the protection scope of the present invention.
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