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工业级路由器路径属性分为哪4类? 工业路由器发送关于目标网络的BGP更新消息,更新的度量值被称为路径属性。属性可以是公认的或可选的、强制的或自由决定的、传递的或非传递的。属性也可以是部分的。并非组织的和有组合都是合法的,工业级路由器路径属性分为4类:4g路由器 1——公认强制的 2...

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伊林思:关于工业路由器OSPF末节区域 工业路由器OSPF末节区域 如果工业路由器路由增加,就意味着LSA的增加,有时,在一个末梢网络中,许多路由信息是多余的,并不需要通告进来,因为一个OSPF区域内的所有工业级路由器都能够通过该区域的ABR去往其它OSPF区域或者OSPF以外的外部网络,既然一个区域的工业无线路由器只要知道去往ABR,就能去往区域外的网络,所以可以过滤掉区域外的工业级无线路由器路由进入某个区域,这样的区域称为OSPF末节区域(Stub...

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4g路由器:工业无线路由器路由协议想要实现目标 工业无线路由器路由协议想要实现目标 你能够想象如果每个工业无线路由器都存储从它的节点所能到达的每个目标点所需的信息,很可能该工业路由器会积累一张庞大的路由表。由于物理上(cpu,内存)的限制工业级路由器很难有时就根本不可能处理一个庞大的路由表。因此在不影响到达每个目的地的能力的情况下,我们要使路由表最小化。例如,一个工业无线路由器通过连接到另一个工业4g路由器一个DS1链路连接到Internet,那么这个工业级4g路由器可以将Internet上所有节点的信息都存储,或者它也可以将所有DS1串行链路外的非本地的信息都不存储。也就是说工业3G路由器没有在它的路由表中存储任何有关数据“包”要寻找的非本地网络目的地的信息,而是将这些“包”发送到串行链路另一端的工业级3G路由器,由这个全网路由器来提供必要的信息。我们常把像本例中我们所说的在串行DS1链路另一端的工业全网通路由器称为“Gateway...

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关于全网通工业路由器Dampening的原理 •为了防止路由频繁抖动。BGP利用Dampening机制,将这种频繁抖动的工业路由器路由有条件的加以抑制。 •增强了路由的稳定性,但不牺牲表现良好的(well-behaved)全网工业路由器路由的收敛时间。 •BGP默认不启用Dampening,需要手一启用。 •Dampening仅对EBGP邻居传来的路由起效。 •Dampening的原理: 当在工业路由器上启用Dampening后,如果有一条路由up->down,工业无线路由器会对这条路由记录一个惩罚值,每down一次,惩罚值加1000,当惩罚值达到start...

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了解工业级路由器Classless与Classful路由协议 大家都非常清楚,可以将一个IP网段划分成多个子网,子网的掩码可以是任意位数,比如将一个10.0.0.0/8的大网划分出10.1.1.0/24,10.1.2.0/24,10.1.3.0/24等等,划分出来的更小的网络叫做子网,而原来的大网络叫主网,也称为主类网络,A类地址掩码必须为8位才是主类网络,B类地址掩码必须为16位才是主类网络,C类地址掩码必须为24位才是主类网络。 无论是主网还是子网,都会被工业路由器放入路由表,只是某些工业LTE路由器路由协议不能精确传递子网而已,但只要路由协议传递了子网和掩码,工业级路由器就一定会将其放入路由表中。 支持子网的功能被称为Classless,支持Classless可以与子网很好的协作,如果不支持子网,则被称为Classful,所以,一个路由协议是工作在Classless还是Classful,直接关系到全网路由器路由信息中是否存在精确的子网信息,如RIP和EIGRP,并且这些功能可以在协议中手工开启或关闭。4g...

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Enable-Network To A Bus

文章目录 : 技术相关

E-lins H685 and H820 router Application in Sydney’ bus.E-lins Perfect solution when we’re dealing with a constantly moving, rattling bus!

E-lins  Wireless has been dealing with that problem recently. It’s supplying the on-bus 3G Wi-Fi routers for Sydney’s Opal transport smartcard, which is supposed to catch NSW up to the rest of the nation by actually introducing a work on-train smartcard.

As part of a supply contract with Opal’s main developer Cubic Transportation Systems to fit out 5000 Sydney buses, E-lins had to customise one of its existing designs. Many of the features on the router would be recognisable in most networking contexts: it has eight on-board ports, and can switch between using Telstra’s 3G networks when on the road and Wi-Fi signal when in maintenance areas. But it also required some changes.

“We’ve specialised the device so that it copes with vehicles being turned on and off which can cause spikes and currents in the available power,” E-lins Wireless’s Evan zou told us. “It’s also vibration-proof.”

The bus rollout is currently half-completed (though only two routes in Sydney are active), and scheduled to finish by the end of 2014.

E-lins Secure Broadband 4g Router and Gateway for Remote Monitoring

文章目录 : 产品文章, 伊林思产品FAQ

E-lins H685 is built for security, speed, reliability and versatility to meet the ever-changing needs of fixed and mobile enterprise broadband M2M applications. With a high performance, yet low-power, embedded processor, the H685 is an adaptable and economical platform for 3G and 4G broadband routing and cellular gateway functions. The H685 product line features an open Linux operating system, user programmable applications, four power management sleep modes and both high-speed and digital physical interface options.

The H685′s a leading provider of wireless products, services and solutions, announced today its newest enterprise data product, a high-speed broadband router and gateway messaging unit that provides reliable and secure 3G and 4G network connectivity for 24/7 always-on operation of remote-fixed and mobile machine-to-machine (M2M) deployments. Welcome to our website learn more!

You could do three new things with your router

文章目录 : 技术相关

You could do three new things with your router,That Daily use of the function you don’t know!

1.Set up a guest network

Many routers let you set up two wireless networks that can run simultaneously: one for you and the other for guests in your home. The benefit of this is that you can use a security password to protect the primary network and all household devices that connect to it, while still offering visitors Internet access via the second—a guest network that doesn’t require a password. (Some routers also let you set a password for the guest network if you want to restrict access to it.)

2.Make your wired printer wireless

If you have the right equipment, your router can help you avoid having to buy a wireless printer in order print from your laptop.  You need a router with a USB port, print server capability, and a printer with a USB port. First connect the printer directly to the router’s USB port. Then change some of the computer’s settings so that it can find the printer.

3.Create your own personal cloud

Many routers let you connect an external USB hard drive to them and use it as a personal cloud. Once the drive is installed, you can usually access any data you store on it from virtually any Internet connection using a smart phone, tablet, or laptop.

New 4G M2M Router

文章目录 : 产品文章, 伊林思产品FAQ

E-lins H685t is a new 4G/LTE router with wifi,built on components that meet industrial requirements , with a low price but with unlimited features.The router can be mounted on a DIN rail with a separate bracket . It is powered by 12 VDC and has a rich support for different LTE bands, it can communicate via LTE at 800, 900 , 1800, 1900 , 2100 and 2600 MHz. Is not 4G on the spot then transferred router to 3G and then 2G. As for 4G so the router has a theoretical maximum speed of 100 Mbit / s download speed and 50 Mbit / s upload speed , but also for 3G offers the great performance by up to 42 Mbit / s download speed and 5.7 Mbit / s upload speed.

In order to reach these speeds , use of dual external antennas , three antennas included in the package , two for 4G and one for wifi. Because the router has an antenna plug of SMA type antenna can be replaced with more powerful antennas , which can be an advantage in such fixed installations.

Wireless M2M devices in the oil and gas industry

文章目录 : 技术相关

Wireless M2M devices in the oil and gas industry,E-lins  are M2M players that deliver solutions to a wide range of industries, including oil & gas.

North America is the most advanced market for M2M applications in the oil & gas sector. The region is also the home of a majority of the players specialising in the oil & gas industry. E-lins are major vendors of field instrumentation, equipment, services and M2M solutions for the of the oil & gas industry.

According to a new research report from E-lins (wireless m2m manufacturer), the number of devices with cellular or satellite connectivity deployed in oil & gas applications worldwide was 423,000 at the end of 2013.

Growing at a CAGR of 21.4 percent, this number is expected to reach 1.12 million by 2018. The split between cellular and satellite based M2M devices at the end of the forecast period will be 871,000 units and 244,000 units respectively. The oil & gas industry is characterized by remote and inaccessible facilities where wireless communication in many cases is the only viable option for transferring M2M data.

Industrial LTE Router For Secure M2M Communication

文章目录 : 其他, 技术相关

E-Lins  has expanded it’s M2M router  in  LTE. This router solutions for LAN-WAN , GPRS , UMTS and LTE now available .

E-Lins Industrial LTE router is a high- performance router for industrial use , which can be sensitive data securely via cellular networks. The integrated firewall and VPN support protect your application secure from unauthorized access. If LTE is not available, the system automatically switches to UMTS / GPRS / EDGE.In addition, the data connection and the mobile network quality to be monitored. If necessary, a message is sent or rebuilt the cellular connection.The configuration of the router via the built-in web server, or XML files in the remote mode.

Other important features are:

Supply voltage : DC5V~40V is the default, DC5V~50V is the option
extended temperature range of -30 ~ 75°C
integrated overvoltage protection

Optional all Router with RS232 and RS485 interface for transparent serial transmission over a TCP / IP are available .

2.4Ghz WiFi Comparation

文章目录 : 技术相关

WLAN communication criterion live through 802.11a, 802.11b, 802.11g and nowadays’ main 802.11n and 802.11ac.

802.11b 11Mbps
802.11 Super b 22Mbps
802.11g/802.11a 54Mbps
802.11 Super G 108Mbps
802.11 High Speed-G 125Mbps
802.11n 150Mbps
802.11n 300Mbps
802.11n 450Mbps
802.11ac 1200Mbps

450Mbps is the fastest WLAN in 2.4Ghz band. Comparing to 300Mbps wireless products, 450Mbps products have higher transmission band, provide high-efficient steam,more stability and wider coverage.
Real 450Mbps Wireless Products use three WiFi antenna. 150Mbps is two stream in 802.11N protocols. 450Mbps is three stream. One antenna sends and receives one stream, so 300M uses 2 WiFi antenna which is enough.
All E-Lins’ Cellular routers have WiFi feature option. H685 and H820 series use 150Mbps, and H700/H720 series use 300Mbps. H860 openWRT series has expansion WiFi slot for different band even for 450Mbps and 802.11ac dual band.

Radio module ME909u-523 mini PCIe for Wireless M2M

文章目录 : 技术相关

Specification

ME909u-523 Mini PCIe is a variant of ME909u-523 with standard Mini PCIe form factor, which is from ME909u family. It is high-quality designed LTE module which specially for industrial-grade M2M applications such as vehicle telematics, tracking, mobile payment, industrial router, safety monitor and industrial PDAs.
ME909u-523 Mini PCIe supports 100Mbps downlink and 50Mbps uplink data rate, includes enhanced features like FOTA, USSD and Huawei enhanced AT commands.

 

Size and Weight

Height:30.4mm
Width:51mm
Depth:3.4mm
Weight:<15g

Supported Bands

ME909u-523 Mini PCIe:
LTE (FDD) B2/B4/B5/B17
DC-HSPA+/HSPA+/HSPA/UMTS tri-band 850/1900/AWS MHz

Data Transfer Rate
DC-HSPA+ :D ownlink:42 Mbps, Uplink: 5.76 Mbps
LTE FDD: Downlink:100 Mbps, Uplink: 50 Mbps @Bandwidth 20M (CAT3)
Interface
Antenna connector
PCIe interface
USB 2.0 High speed
SIM Card
Reset

Power Supply
3.0 V to 3.6 V (3.3 V recommended)

GPS/Glonass
GPS Standalone
A-GPS

 

ME909u-521 radio module for Wireless M2M

文章目录 : 技术相关

Specification

ME909u-521 (for Asia, Europea, Africa) Mini PCIe is a variant of ME909u-521 with standard Mini PCIe form factor, which is from ME909u family. It is high-quality designed LTE module which specially for industrial-grade M2M applications such as vehicle telematics, tracking, mobile payment, industrial router, safety monitor and industrial PDAs.
ME909u-521 Mini PCIe supports 100Mbps downlink and 50Mbps uplink data rate, includes enhanced features like FOTA, USSD and Huawei enhanced AT commands.

 

Size and Weight

Height:30.4mm
Width:51mm
Depth:3.4mm
Weight:<15g

Supported Bands

ME909u-521 Mini PCIe:
LTE (FDD) B1/B2/B3/B5/B7/B8/B20
DC-HSPA+/HSPA+/HSPA/UMTS dual-band B1/B2/B5/B8
EDGE/ GPRS/ GSM quad-band 850/900/1800/1900 MHz

Data Transfer Rate
DC-HSPA+ :D ownlink:42 Mbps, Uplink: 5.76 Mbps
LTE FDD: Downlink:100 Mbps, Uplink: 50 Mbps @Bandwidth 20M (CAT3)

Interface

Antenna connector
PCIe interface
USB 2.0 High speed
PCM Voice
SIM Card
Reset

Power Supply
3.0 V to 3.6 V (3.3 V recommended)

GPS/Glonass
GPS Standalone
A-GPS

 

Advantages and Disadvantages of 4G LTE TECNOLOGY

文章目录 : 技术相关

Today we talk some advantages and disadvantages of 4G LTE TECNOLOGY.  4G LTE is the 4th generation wireless mobile networks.  With high data speed, the 4G can reach 100Mbps, 150Mbps and 300Mbps, future will update to 1000Mbps.

Advantages
-support for interactive multimedia, voice, streaming video, Internet, and other broadband services -IP based mobile system-High speed, high capacity, and low cost per bit. -global access, service portability, and scalable mobile services -Seamless switching and a variety of Quality of

-Better spectral efficiency. Service driven services.
- Better scheduling and call admission control techniques

Disadvantages
-Expensive and hard to implement
-bettery usage is more
-needs complex hardware