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What is M2M? As is known to all, besides providing more broadband speed and quality, 5G is characterized by the application of the Internet of things (IoT) from the demand and design stage. In order to adapt to different applications, mobile communication technology with no wiring, high coverage and high reusability has become an important...

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The similarities and differences between industrial... 1. definition of industrial 4G router and industrial switch   Industrial 4G router:   Industrial 4G router is a network device responsible for path finding. It provides users with communication by finding the least communication from multiple paths in the interconnection network. Industrial 4G router...

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4g router features of E-lins Technology With the development of new communication technologies and the continuous improvement of network efficiency and function of wireless communication, 4G has been widely used. 4G industrial-grade wireless routers are playing an increasingly important role in the applications of various industries, and the price is getting...

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E-Lins Industrial router applications Industrial-grade routers as Internet network layer communication equipment application in all walks of life, brought a lot of convenience for our industry. "E-Lins" introduce the application of industrial router scenario analysis.   1 The self-service terminal network   E-lins industrial router networking...

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Classification of 4G industrial routers There are many types of 4G industrial routers, which can be divided into different categories from different perspectives. Different types of 4G industrial routers can be used in different environments. The following sections classify the 4G industrial routers from different perspectives. According to the performance From...

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PPPoE–Point-to-point protocol over Ethernet

Category : 其他, 技术相关

The Point-to-Point Protocol over Ethernet (PPPoE) is a network protocol for encapsulating PPP frames inside Ethernet frames. It appeared in 1999, in the context of the boom of DSL as the solution for tunneling packet sover the DSL connection to the ISP’s IP network, and from there to the rest of the Internet. A 2005 networking book noted that “Most DSL providers use PPPoE, which provides authentication, encryption, and compression.” Typical use of PPPoE involves leveraging the PPP facilities for authenticating the user with a username and password, predominately via the PAP protocol and less often via CHAP.

On the customer-premises equipment, PPPoE may be implemented either in a unified residential gateway device that handles both DSL modem and IP routing functions or in the case of a simple DSL modem (without routing support), PPPoE may be handled behind it on a separate Ethernet-only router or even directly on a user’s computer. (Support for PPPoE is present in most operating systems, ranging from Windows XP, Linux to Mac OS X.) More recently, some GPON-based (instead of DSL-based) residential gateways also use PPPoE, although the status of PPPoE in the GPON standards is marginal.

PPPoE was developed by UUNET, Redback Networks (now Ericsson) and RouterWare (now Wind River Systems) and is available as an informational RFC 2516.

In the world of DSL, PPPoE was commonly understood to be running on top of ATM (or DSL) as the underlying transport, although no such limitation exists in the PPPoE protocol itself. Other usage scenarios are sometimes distinguished by tacking as a suffix another underlying transport. For example, PPPoEoE, when the transport is Ethernet itself, as in the case of Metro Ethernet networks. (In this notation, the original use of PPPoE would be labeled PPPoEoA, although it should not be confused with PPPoA, which is a different encapsulation protocol.)

PPPoE has been described in some books as a “layer 2.5″ protocol, in some rudimentary sense similar to MPLS because it can be used to distinguish different IP flows sharing an Ethernet infrastructure, although the lack of PPPoE switches making routing decision based on PPPoE headers limits applicability in that respect.

Differences between industrial class and SOHO class for Router / Modem

Category : 产品文章, 伊林思产品FAQ, 技术相关

As we know, the devices mainly cover three classes, that is SOHO class, Industrial class and Military class.  Each class has its own application requirement. The SOHO class modem and router don’t meet the requirements of the industrial environment and standard entirely because of it is designed for office automation. Mainly differences are the below,

1. Control
The SOHO class is simple design for internet use. People no need control it very often.
The industrial class is designed mainly for industry applications. People need control it quite often, even 7*24 hours.

2. Stable, reliable and robust
SOHO class features are simply. It is mainly used for internet surfing, which is installed in house. People can check and assist it in time. With cost requirement, SOHO class design and development will not care too much for the stability and reliability. The industrial class cares the stability and reliability very much because it’s mainly installed under people’ touch. In another world, it should be working for 7*24 hours without people assist. So the industrial class must have good reliability, recoverability, and maintainability in the production environment at the same time. It is a guarantee that it will not lead the collapse of applications, operating system even the network when any component failure occurs in a network system.

3. The security issues
Lots of fields exist inflammable, explosive or toxic gases inevitably in the process of industrial production, and there must have some certain explosion-proof technology for the intelligent devices and communication equipment which can ensure the safety of industrial field. It is much more practical to add explosion-proof and explosion-proof measures in the Ethernet system under the condition of current technology, namely the ignition energy which caused by the devices problem will not leak through increasing explosion-proof measures to the Ethernet field devices, which can ensure the safety of running system. For those dangerous situation where is no strict safety requirements, you can not consider complex explosion-proof measures.

The network safety of industrial system is another security issue must be considered at the industrial Ethernet applications. Industrial Ethernet can make the traditional three layers of the network system, namely, information management layer, process monitoring layer and field equipment layer, an organic whole, which make the faster data transfer, higher real-time and it can integrate with the Internet seamlessly, it realizes data sharing and improves the operational efficiency of the factory. But there is a series of network security problems at the same time, industrial network may under the threat of virus infection, hackers and illegal operation.

4. The vehicle power supply issues
The vehicle power supply refers to the cable connected to the field devices not only to transmit data signals, but also provide equipment working power supply on-site. The Ethernet hasn’t considered this issue from the design at the beginning, while there are a lot of bus power supply requirements on the industrial site. Because of the above problems, the ordinary commercial Ethernet cannot be applied to the control of industrial field directly. And the industrial Ethernet is produced to solve these problems.

 

5. Features and performance
The industrial class owns much more features and SOHO class, such as connection alive monitor and keeping, Dual Sim connection, multi-line redundancy, GPS, Serial ports, VPN networks, high gain and special antenna replacement, etc.