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Industrial-grade 4G router TCP/IP network architecture 1. Layering of TCP/IP network system   TCP/IP (TransmissionControlProtocol/InternetProtocol), transmission control protocol/Internet protocol. It was developed by the defense advanced research projects agency in the 1970s, and was later integrated into UNIX and popularized. It emerged in the 1980s as the Internet's...

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The structure of 4G DTU The main function of DTU is to transmit data from remote devices back to the background center via wired/wireless. Different data transmission modes of DTU include all-network-connected DTU, GPRS DTU, WIFI DTU, CAN DTU and 4G DTU. Today, we will have a look at the structure and work flow of DTU.   To complete...

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What are the wireless connection technologies of the... Internet of things (iot) applications have been deeply rooted in our lives. The E-Lins H685 industrial-grade router is a small industrial-grade wireless router with single or double LAN ports. TDD/ fdd-lte, 4G, 3G, GPRS network optional. Besides, what are the wireless connectivity technologies for the Internet of things?   1....

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The use of industrial wireless routers Industrial-grade wireless router adopts high performance 32-bit industrial-grade ARM9 communication processor, which is widely used in finance, electric power, postal, water conservancy, environmental protection, meteorology and other industries.   Industrial router is mainly used in intelligent transportation,...

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Cascade and stack of industrial-grade 4G routers The most basic star Ethernet architecture, the actual star enterprise network may be much more complex than this. This renaturation is not only reflected in how high-end network equipment, how complex configuration, more importantly, the performance of network switching level is more complex. Industrial routers and firewalls...

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什么是工业4g路由器RIPv2认证

文章目录 : 产品文章

  工业4g路由器

  1.RIPv2认证

  RIPv2增加了对发送响应帧设备的认证功能。由于响应帧用作传送网络路由信息,对响应帧作认证可以防止在全网传播虚假路由表。响应帧使用一个工业全网通路由器记录空间来承载。带认证的响应帧的第一个AFI字段被设置成0xFFFF来区别路由记录。所以带认证的响应帧中最大路由条数为24。认证记录中路由标签被作为认证类型。后24字节可以存放明文口令或MD5散列后的口令。

  RIPv2认证并没有对承载工业FDD-LTE路由器信息的加密或数字签名,所以使用RIPv2认证的网络仍然很容易受到攻击。

  2.子网掩码

  子网掩码字段因适应网络支持子网需求而产生。RIPv2在地址字段后分配4字节的空间存储子网掩码。RIPv2使用地址字段和子网掩码字段区分网络,子网或主机。

  3.下一跳标识

  使用下一跳标识,RIPv2可以通过防止不必要的跳数而使转发更高效。该字段通常用在某一共享介质网络上不是所有设备都运行RIP的情况。当下一跳字段为0.0.0.0时,下一跳是发送路由信息的工业TD-LTE路由器。当下一跳字段为其他值时,下一跳为该地址所指向的设备。该地址必须由路由设备直接可达。如果接收路由的设备不能直接到达下一跳字段所指向的地址,则下一跳字段作0.0.0.0处理。

  标签:工业路由器    4g无线路由器

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