Prev

Next

工业路由器NBMA网络转化为点到点的链路 当我们使用点到点子接口将NBMA网络转化为点到点的链路时,整个NBMA网络将产生过多的PVC部分互联或全互联的网状结构,但这将产生一定的负面影响,会使网络中产生大量的LSP泛洪流量。我们都知道,运行IS-IS的工业路由器当接收到一个LSP报文后,会将此LSP从除接收接口以外的所有启用了IS-IS协议的接口泛洪出去,以使网络中的其他工业路由器都可以接收到此LSP。但是这种泛洪机制对于存在大量部分互联或全互联的网络将产生过多冗余的LSP扩散。 所谓全互联或全网状网络拓扑,是指所有工业路由器都与其他工业级无线路由器向连接(通常是点到点子接口)。在这样的一个网络中,当一台路由器从某接口收到邻居泛洪过来的LSP后,由于它并不知道这个LSP是否已经被其他邻居工业4g路由器收到,所以会再从其他接口泛洪出去,即使其他工业级4g路由器的链路状态数据库中已经存在这个LSP。如果网络中有n个全网路由器的话,那么网络中的每台工业级LTE路由器都会扩散n-2条冗余的LSP,这样总共被泛洪的多余的LSP将为(n-1)x(n-2),条而这些LSP的扩散是多余。如果每台工业全网通路由器都刷新一条LSP的话,那么这个数量还将会成倍数的增长,导致了大量带宽资源的浪费。 为了解这种在全互联或高度互联的网络中出现的LSP泛洪的冗余现象,IS-IS提供了一种解决方案——IS-IS全通组,也称作Mesh组。IS-IS全通组在RFC2973中进行了定义。所谓全通组,就是假设所有工业3G路由器之间都是完全互联的,每个工业级全网通路由器都会直接收到其他全网通工业级路由器泛洪的原始的LSP的拷贝。 可以将全网工业路由器的接口加入到某个全通组中,一个全网通工业路由器上可以存在多个全通组,全通组内接口之间的LSP泛洪是受限制的,全通组之间的LSP泛洪是正常的操作,未加入全通组的工业级3G路由器接口与全通组之间也是正常的LSP泛洪操作。全网通路由器 ...

更多文章

工业路由器使用CSNP来保证链路状态数据库的完整性 在广播网络中,工业路由器使用CSNP来保证链路状态数据库的完整性,并且只有DIS才会发送工业全网通路由器CSNP报文,DIS发送CSNP报文的间隔为10s。CSNP报文中描述了DIS的链路状态数据库中所有工业级3G路由器LSP的摘要信息。当其他工业级路由器收到DIS发送的CSNP后,会使用CSNP中的LSP摘要信息与与本地的链路状态数据库中的LSP进行比较,进行比较的目的是确定本地链路状态数据库中的信息是否已经同步和完整。如果工业级4g路由器发现本地数据库中缺少某个LSP条目,那么它将使用PSNP向DIS请求这个缺少的LSP条目。这个PSNP报文中包含就是请求的LSP条目的摘要信息。当DIS收到其他全网路由器发送的PSNP报文后,将会发送一个完整的LSP报文,这个LSP就是其他工业无线路由器所缺少的LSP条目。在广播网络中,DIS使用周期性的CSNP报文向网络中发送同步链路状态数据库的信号,而其他工业4g路由器使用PSNP报文来请求缺少的LSP条目。 在IS-IS的点到点类型的网络中,链路状态数据库同步的操作与广播网络中略有不同,而且工业级全网通路由器发送CSNP与PSNP报文的方式和其作用也有一些差别。 在点到点网络中不存在DIS,工业3G路由器不会周期性的发送CSNP报文,CSNP报文只在链路链路被激活时发送一次,而且链路两端的工业级4g路由器都会发送CSNP报文以描述本地链路状态数据库中所有LSP的摘要信息。当工业路由器发送对端发送的CSNP中含有本地缺少的LSP信息时,也会使用PSNP报文向对端请求LSP。当对端收到PSNP报文后,将向请求方发送包含完整LSP信息的LSP报文,这点上与广播网络中的操作是相同的。但是在点到点链路上,收到LSP报文的工业4g路由器还会向对方再次发送一个PSNP报文以对之前收到的LSP进行确认。可以说,在点到点网络中的LSP交换是可靠的。这点与广播网络不同,在广播网络中工业级无线路由器不使用PSNP报文对收到的LSP进行确认,而是通过DIS周期性地发送CSNP报文以弥补广播网络中不可靠的LSP交换。 在点到点链路上,工业路由器使用PSNP对收到的LSP报文进行确认,所以在点到点链路上是可靠的泛洪机制。 IS-IS路由协议支持两种网络类型:广播链路和点到点链路。默认情况下,全网通工业级路由器IS-IS将广播网络和NBMA网络看作是广播类型。对于封装了PPP或HDCL等协议的链路看作是点到点类型。对于NBMA网络中的主接口和点到多点子接口,IS-IS将其看作是广播类型;对于NBMA网络中的点到点子接口,将其看作是点到点类型。IS-IS不像OSPF那样,提供了对NBMA网络(例如Frame-Relay、ATM)的专门支持。对于NBMA网络,全网通工业路由器IS-IS认为其网络拓扑是PVC全互联(mesh)的,就是把它看作广播网络。但如果实际网络拓扑中并不是PVC全互联的结构时,例如部分互联的结构和Hub-Spoke结构,推荐使用点到点类型网络,即使用点到点子接口,以免造成NBMA网络中的链路状态数据库同步出现问题。无线路由器

更多文章

工业级路由器LSP校验和(Checksum) 当工业路由器生成一个LSP后,为了保证LSP中信息的完整性,它将对LSP进行校验和计算,然后封装进LSP的LSP校验和字段(checksum)。校验和的计算包括从LSP中的剩余时间字段之后的字段一直到数据包的末尾,由于剩余时间是一个不断变化的字段,所以校验和计算将不包括这部分内容。校验和主要用于检查被破坏的LSP或者还没有从网络中清除的过期LSP。当一台工业4g路由器收到一个LSP,在将该LSP放入到本地链路数据库和将其再泛洪给其他邻接工业3G路由器之前,会重新计算LSP的校验和,如果校验和与LSP中携带的校验和不一致,则说明此全网通工业级路由器LSP传输过程中已经被破坏。 当工业路由器收到了一个被破坏的LSP后,会采取一个清除的操作。它将该LSP的剩余时间设置为0然后再泛洪到网络中。当网络中的其他工业LTE路由器收到这个剩余时间被置为0的LSP后,会将其本地链路状态数据库中相应的LSP清除。当产生这个被破坏的LSP的源双卡路由器收到这个剩余时间被置为0的LSP并发现这个LSP是自己生成的后,会重新生成一个正确的LSP然后泛洪到网络中。 IS-IS的这种LSP清除操作虽然可以有效的清除网络中被破坏的LSP,给运行工业级4G路由器IS-IS路由协议的网络提供了一种自动修复的能力,但是它也带来了一种负面的影响。如果网络中的介质存在问题,就有可能产生LSP被连续破坏的现象。这些被破坏的LSP会被路由器不断的清除,同时源工业无线路由器也会不断的重新生成新的LSP,这种现象被称为LSP破坏风暴。LSP破坏风暴将消耗大量的网络资源。我们可以对工业级无线路由器进行配置,使其在收到被破坏的LSP后忽略它,即丢弃被破坏的LSP,从而启动清除操作。在后续工业级全网通路由器IS-IS配置章节中将介绍具体的配置方法。 标签:4g路由器...

更多文章

伊林思:中间系统类型工业4G路由器(ISType) 在LSP报头中最后一个字节的中间系统类型(ISType)位占2bit,工业4G路由器的类型。该字段表示了此LSP是来自L1工业路由器还是L2工业级路由器。这也表示了收到此LSP的工业路由器将把这个LSP放到L1链路状态数据库还是L2链路状态数据库。该2bit中01表示L1;11表示L2;00与10未使用。 DIS和伪节点【4g路由器】 LSPID中包括一部分称为伪节点标识符(PseudonodeID),用来标识此LSP是否是由网络中的指定中间系统(DIS,DesignatedIntermediateSystem)为网络产生的伪节点LSP。 在广播类型的网络(LAN)中,IS-IS需要为每个网段选择一个指定中间系统DIS,这里的指定中间系统DIS的作用与OSPF中的指定工业级路由器DR的非常相似。在OSPF网络中,DR用来负责将链路状态信息泛洪到每个非DR工业路由器,并且帮助其进行链路状态数据库的同步。在IS-IS中也是如此,为了使链路状态信息更加准确和实时的同步给网络中的所有全网路由器,并且要减小带宽的利用率和路由器的处理开销,IS-IS也要在广播网络中选举出一个工业级无线路由器(DIS)来达到这个目的。 在IS-IS中选举DIS的过程也是非常简单的。每个运行IS-IS协议的全网通路由器的接口都拥有一个优先级(Priority),默认的优先级为64,同样也可以通过命令手工修改默认的优先级。工业4g路由器之间发送的HelloPDU中将携带接口的优先级信息。每个工业LTE路由器收到网络中其他工业级LTE路由器发送的HelloPDU后,通过比较优先级来进行DIS的选举。优先级数值越大的工业全网路由器将被选举为此网段的DIS。这里与OSPF不同的是,在OSPF中,如果接口的优先级为0,那么这台工业级全网通路由器将被认为没有资格成为此网段的DR。在IS-IS中,如果接口的优先级为0,这仅仅表示最低的优先级,但是此工业级4G路由器还拥有成为DIS的资格。当两台工业全网通路由器的接口优先级相同时,那么拥有更大的SNPA(在LAN中通常为MAC地址)的接口的工业级全网通路由器将成为DIS。在OSPF中如果优先级相同将比较RouterID。 在OSPF中,选举完DR后,还将选举出一个备份DR,BDR(BackupDR),以用来在原先DR出现故障时接替新的DR角色,并重新选举出BDR。但在IS-IS中,将不进行备份DIS的选举。如果DIS出现故障了,其他全网通工业路由器将会重新选举出一个DIS。其次,在OSPF中,DR和BDR的选举是非抢占模式的,也就是说当有更优优先级的路由器加入到现有网络中后,也不会抢占原先DR和BDR的角色。从某种意义上来讲,在OSPF网络中,第一台启动的双卡路由器将成为网络的DR,第二台启动的双路路由器将将成为BDR。与OSPF相比,DIS的选举是抢占的,即当有更优DIS资格双路路由器加入网络后,它会成为网络中新的DIS。这样,每次DIS的变更必须泛洪一组新的LSP。 默认情况下,运行IS-IS的双卡路由器将以每10s的间隔发送HelloPDU。但是对于一个DIS来说,由于它在网络中起到重要的作用,所以它发送HelloPDU的间隔的频率将是其他路由器的3倍,也就是说DIS以每3.3s的间隔发送HelloPDU。这样其他全网通工业路由器可以迅速检测出DIS出现故障并开始新的选举过程,增加了网络的收敛速度。无线路由器

更多文章

用于工业路由器指定策略的路由映射 Route Redistribution redistribute routing-process process-id [tag|metric|metic-type|subnets|route-map] *routing-process:BGP EGP Connected EIGRP IGRP ISIS ISO-IGRP Mobile ODR OSPF RIP and Static *ospf-metric:BGP缺省重分布度量 1 其他协议为20 *tag-value:附加到重分布工业路由器路由的一个32位的值,OSPF没有使用工业级无线路由器路由标记, 可以在用于指定策略的路由映射中引用,缺省标记为0 利用route-map控制重分布,并修改metric值,并做标记 如上图,基于标签来控制工业级路由器路由的重分布 Controlling...

更多文章

twitter

Differences between industrial class and SOHO class for Router / Modem

Category : 其他, 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.

E-Lins 4G Wireless Router: Solutions for Transport

Category : 其他, 技术相关

Traffic Data Acquisition Application
Traffic Data Acquisition is among one important tasks in ITS. All the on-line or historical data are vital for the design and planning for the traffic management strategy. The traffic data acquisition device normal consists of two parts: the sensor and the controller. The controller links with the central through wire-line connection and send back the data collected from the sensor. However, installation of the wire-line relates to huge engineering efforts and the maintenance of fixed lines has always been difficult. There will be more problems to get wire-line connection in remote areas. When

the communication line goes down, data is lost unless a data Logger is further installed.

In this application, wireless module links with the Traffic Data Acquisition device using RS485 interface. The raw data from the detector is further analyzed by the data protocol analysis mechanism provided by the wireless module and sorted data is transmitted to the central Traffic Control Centre through GPRS network and Internet in TCP/IP packet. Data can be temporarily stored in the memory buffer when GPRS is disconnected. From the system integrator”s point of view, all the integration on the terminal wireless

connection is achieved by the plug & play of wireless module and no change is necessary on the original detecting device. And only simple application is required at the central to access the terminal data. The total system implementation is accomplished within 3 weeks.

A Quick Understanding of FTP/SFTP/FTPS/TFTP

Category : 伊林思产品FAQ, 其他, 技术相关

File Transfer Protocol (FTP)

The File Transfer Protocol (FTP) is a standard network protocol used for the transfer of computer files from a server to a client using the Client–server model on a computer network.

FTP is built on a client-server model architecture and uses separate control and data connections between the client and the server. FTP users may authenticate themselves with a clear-text sign-in protocol, normally in the form of a username and password, but can connect anonymously if the server is configured to allow it. For secure transmission that protects the username and password, and encrypts the content, FTP is often secured with SSL/TLS (FTPS). SSH File Transfer Protocol (SFTP) is sometimes also used instead; it is technologically different.

 

SSH File Transfer Protocol(SFTP)

The SSH file transfer protocol (chronologically the second of the two protocols abbreviated SFTP) transfers files and has a similar command set for users, but uses the Secure Shell protocol (SSH) to transfer files. Unlike FTP, it encrypts both commands and data, preventing passwords and sensitive information from being transmitted openly over the network. It cannot interoperate with FTP software.

In computing, the SSH File Transfer Protocol (also Secure File Transfer Protocol, or SFTP) is a network protocol that provides file access, file transfer, and file management over any reliable data stream. It was designed by the Internet Engineering Task Force (IETF) as an extension of the Secure Shell protocol (SSH) version 2.0 to provide secure file transfer capabilities. The IETF Internet Draft states that, even though this protocol is described in the context of the SSH-2 protocol, it could be used in a number of different applications, such as secure file transfer over Transport Layer Security (TLS) and transfer of management information in VPN applications.

This protocol assumes that it is run over a secure channel, such as SSH, that the server has already authenticated the client, and that the identity of the client user is available to the protocol.

Simple File Transfer Protocol

Simple File Transfer Protocol (the first protocol abbreviated SFTP), as defined by RFC 913, was proposed as an (unsecured) file transfer protocol with a level of complexity intermediate between TFTP and FTP. It was never widely accepted on the Internet, and is now assigned Historic status by the IETF. It runs through port 115, and often receives the initialism of SFTP. It has a command set of 11 commands and support three types of data transmission: ASCII, binary and continuous. For systems with a word size that is a multiple of 8 bits, the implementation of binary and continuous is the same. The protocol also supports login with user ID and password, hierarchical folders and file management (including rename, delete, upload, download, download with overwrite, and download with append).

FTPS

Explicit FTPS is an extension to the FTP standard that allows clients to request FTP sessions to be encrypted. This is done by sending the “AUTH TLS” command. The server has the option of allowing or denying connections that do not request TLS. This protocol extension is defined in RFC 4217. Implicit FTPS is an outdated standard for FTP that required the use of a SSL or TLS connection. It was specified to use different ports than plain FTP.

Trivial File Transfer Protocol(TFTP)

Trivial File Transfer Protocol (TFTP) is a simple, lock-step FTP that allows a client to get a file from or put a file onto a remote host. One of its primary uses is in the early stages of booting from a local area network, because TFTP is very simple to implement. TFTP lacks security and most of the advanced features offered by more robust file transfer protocols such as File Transfer Protocol. TFTP was first standardized in 1981 and the current specification for the protocol can be found in RFC 1350.

 

 (Information collected from Wekipedia)

E-Lins FAQ — POE

Category : 产品文章, 伊林思产品FAQ, 其他, 技术相关

Q: Does your router support POE option? How does it work?

A: Yes, E-lins H685 series, H700 series and H720 series routers support POE option.

It works as following chart.

POE

 

Orange helps Sensile Tech monitor Oil & Gas with M2M

Category : 其他, 技术相关

About Sensile Technologies

Sensile Technologies is a forerunner in the Internet of Things (IoT) market and a leading provider of solutions for remote monitoring of tank levels for the oil and propane industry. Founded in 1999 and based in Morges, Switzerland, Sensile Technologies has extensive experience in high-quality product development and production as well as reliable service and support. They are an innovative company with four world premieres under their belt. All of their products are Swiss made and certified for hazardous environments.

 

About Orange Business Services

Orange Business Services, the Orange branch dedicated to B2B services, is not only a telecom operator, but also an IT solutions integrator and applications developer in France and around the world. Its 20,000 employees support companies in all areas of their digital transformation: mobile and collaborative workspaces; IT/cloud infrastructure; fixed and mobile connectivity; private and hybrid networks; applications for Internet of Things, 360° customer experience and Big Data analytics; and cybersecurity thanks to dedicated experts and infrastructure to protect information systems. More than 3,000 multinational organizations and 2 million SOHOs, enterprises and local authorities in France rely on Orange Business Services as their trusted partner.

 

Orange is one of the world’s leading telecommunications operators with annual sales of 40 billion euros in 2015 and has 155,000 employees worldwide at 31 March 2016. Orange is listed on the NYSE Euronext Paris (symbol ORA) and on the New York Stock Exchange (symbol ORAN).

Orange and any other Orange product or service names included in this material are trademarks of Orange or Orange Brand Services Limited.

 

 

Orange Business Services has won a three-year contract with Sensile Technologies for M2M connectivity, including 25,000 SIM cards, to support its two remote monitoring products worldwide: NETRIS®2 and GASLink®

Headquartered in Morges, Switzerland, Sensile Technologies is a pioneer in the internet of things (IoT) market. Specifically, it is a leading provider of solutions for the remote monitoring of tanks and meters in the oil and gas industry. Sensile Technologies monitors more than 60,000 tanks in industrial and business facilities across 60 countries, via a global network of highly-qualified technicians and local partners.

Up to now, Sensile Technologies used 2G compatible devices to power its telemetry solutions. The contract with Orange Business Services extends this to cover 3G/4G devices, which future-proofs the solutions against 2G network shutdown and ensures seamless global coverage.

Sensile Technologies’ telemetry solutions, GASLink® and NETRIS®2, play a key role in the monitoring process. They are installed directly in the oil or propane tank and regularly send tank level measurements via the GSM network to the cloud, where the data is automatically processed.

The up-to-date tank level data allows oil and propane merchants – and their haulers – to arrange deliveries automatically via planning tools. They get data directly in their enterprise resource planning (ERP) system from Sensile Technologies’ Oil Link cloud solution to trigger deliveries automatically. In addition, their customers can get access on smartphones to monitor consumption.

Thanks to the optimization of deliveries based on live data, merchants and haulers can lower their logistics costs by at least 25 percent, without the risk of customers running dry. In addition to mitigating the risk of running out of fuel, customers are also able to access a detailed visualization and analysis of their logistics, enabling them to adapt their processes to reduce their costs further.

“Leading oil and propane companies rely on our autonomous, robust, and easy to install systems. We have more than 60,000 in place on tanks in over 60 countries. Orange Business Services has proven itself as a reliable partner with the global footprint we need for our business. Their competitive flat-fee pricing was convincing as well,” said Jean-Marc Uehlinger, Operational Director, Sensile Technologies.

“With its telemetry solutions Sensile Technologies is helping drive the latest revolution in industry. In Industry 4.0 every part of the enterprise and each phase of the manufacturing cycle will be connected. The internet of things (IoT) and M2M play a key part in this revolution, and we manage 10 million connected objects for our customers worldwide, including over 7 million active SIM cards,” Anne-Sophie Lotgering, senior vice president Europe, Russia & CIS, Orange Business Services.

GASLink® and NETRIS®2 are the result of 15 years’ experience from Sensile Technologies in the development and production of autonomous telemetry equipment. In addition to using the 2G (SMS) network to transmit data, NETRIS®2 can also use 3G or 4G, as well as create a short-distance radio frequency connection, which functions in every location.

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.

Wire Your Home or Business Right with a 4G Wifi Router

Category : 产品文章, 伊林思产品FAQ, 技术相关

Now, network is a neccesity in our lives. When we are at home or office, we are tend to use wifi for better internet surfing experience.

wireless router is designed to amplify the signal sent out into a home or office so devices, such as tablets and smartphones, can connect to the internet without the benefit of hardwiring. A 4G modem with fast capabilities is the preferred choice for many home and business owners these days.

GSM modem might be all that is required to connect to the internet, but a modem router that offers wireless capabilities takes access to the next level. Transforming a home or office into a hub for wireless communication takes specialized equipment, such as a VPN router or 4G wifi router. At E-Lins, we specialize in all the equipment required to m2m, power smartphones, computers, tablets and other devices, such as security systems. It is our aim to offer the best router price points available so our clients can easily transform their homes or businesses into “smart” properties.

When a 4G wifi router is installed in a home or business (e.g. wireless M2M solutions), users gain a number of benefits. Firstly, these devices enable any internet ready device the ability to connect. Plus, they also make it much easier for users to manage a diversity of equipment. In addition, a VPN router that is properly set up enables users to secure their internet connections to provide more peace of mind for online activities.

Transforming a home or office into a hub for wifi connectivity requires specialized equipment. E-Lins is dedicated to providing our customers with everything they need at highly competitive pricing. Just browse our selection today to find the modems or routers needed to transform your home or workspace into a wifi hub.

Nokia #India announces #5G #IoT for #SmartCities

Category : 其他, 技术相关

The Finnish company showcased more than 60 different use-cases of these technologies at its annual Innovation Day in Bengaluru, including those that are already live and ready for use as well as ones that aren’t live yet.

Nokia’s research and development office in Bengaluru, which has around 5,000 employees, creates solutions for both its Indian and international markets. Its new IoT range, though, will focus more on Indian clients, especially governments.

“5G and IoT are going to be the future trends that we see in the marketplace. While from an India standpoint it’s still an early stage for 5G to happen, IoT is taking a bit of a step forward in terms of adoption here,” Randeep Raina, chief technology officer for Nokia India said in an interview on Wednesday.

“There are certain initiatives led by the government right now in the form of digital India and smart city programs. IoT could be one of the enablers to make cities a bit safer and smarter. It’s with that intent that we’d put a theme out here on this innovation day,” he said.

The three main solutions, or use-cases, showcased by the company on Wednesday were video analytics of real-time city surveillance, a public safety service that can be deployed at railroad crossings and a smart parking service.

Based on real-time city surveillance via cameras deployed at various public locations Nokia’s IoT solution will be able to provide clients – mostly governments and policing authorities – with data analysis. The analysis includes everything from identifying anomalies, such as incorrect pedestrian crossings, to tracking traffic patterns.

Its public safety solution uses sensors, beacons and cameras and is aimed at keeping pedestrians from straying across the path of oncoming trains at railroad crossings. This service will both warn people crossing railroads on foot of an oncoming train as well as alert the authorities and issue notice of a fine in case people cross even after receiving a warning. The warning messages will appear on any device using any service provider and are not app-based, i.e. the user will not need to install an app to see the messages.

Nokia’s smart parking solution will target organized parking lots that can use it to fully automate the process – from identifying a car on entry and guiding the driver to free parking spots through an app, to recording the number of hours a car is parked at the lot and bill payment online via the app.

Roughly two months ago, auto components supplier Bosch Ltd also launched solutions targeted at creating smart cities, including a smart parking service that will help commuters find space in crowded areas. The German company has other similar solutions that are, again, aimed at assisting traffic policing and citizen safety and security systems.

M2M Magazine  http://www.machinetomachinemagazine.com/2016/12/15/nokia-india-announces-5g-iot-for-smartcities/

Research: China IoT Market is expected to Worth 121.45 Billion USD by 2022

Category : 其他, 技术相关

According to the new market research report China IoT Market by Hardware (Processor, Memory, Logic, Sensor, & Connectivity), Software (Real-Time Streaming, Network Security, Data Management, Remote Monitoring, & Bandwidth Management), Platform, Service, and Application – Global Forecast to 2022,published by MarketsandMarkets, the market is expected to reach USD 121.45 Billion by 2022, at a CAGR of 41.1% between 2016 and 2022.

The major factors driving this market are the growing demand for smartphone and other connecting devices, the increasing internet penetration, rising trends of industrial automation, and mainstream adoption of cloud computing.