一、Programme background

      Nowadays, optical fiber transmission has long been the mainstream choice for operators to transmit long distances. When implementing network monitoring, protocol analysis, and information collection, operators and value-added service providers generally ensure that they do not affect the transmission of the original link by means of mirroring and copying. In the case of reasonable collection of traffic. However, mirroring and copying mainly have the following difficulties :

     ·  You must have a switch or router that supports mirroring or replication. 

     ·  It takes up the service interface of the switch or router, and the cost is increased in disguise. 

     ·  Image mirroring and replication requires professionals to enter specific commands to implement. 

     ·  If you mirror or copy data from multiple interfaces, you can not distinguish the uplink and downlink properties of the mirrored data. 

     ·  Both mirroring and replication are implemented on active devices, so the high reliability of the device must be guaranteed. 

      In view of the above reasons, the current industry for the link mirroring and replication are basically used to solve the way of spectroscopy .

      二、Program introduction

      三、Programme value point

      The spectrometers are generally passive devices, also known as optical multiplexers. They do not require external energy. As long as there is input light, the reliability is higher, the installation and operation are simple, and the non-professionals can complete them independently. Through the spectroscopy, the uplink and downlink of the line can be clarified. So as to reduce costs. 

      四、Related products 

      The F901E Ethernet adapter products produced by Beijing Guangruntong Technology Development Co., Ltd. are single-port optical fiber Ethernet adapters based on Intel Ethernet control R&D of Intel company. This product applies to servers and high-end devices.The adapter card is designed and used to optimize the performance, so that the system I / O is no longer the bottleneck of high-end network applications. The adapter can be fault-tolerant by binding groups, and communication from the fault port is routed to other members of the same group. The adapter card has integrated hardware acceleration function, and can perform TCP / UDP / IP check and load sharing and TCP segmentation tasks. Host processing technology can load accelerators and release CPU resources to handle other applications. The adapter card is an ideal solution for deploying multiple networks and deploying critical network applications and environments on high-performance servers. 

      In the era of optical communication, the spectrometer is a component of the EPON network, which is a passive device connecting OLT and ONU. Its function is to distribute downlink data and concentrate uplink data. The spectrometer has an upstream optical interface and several downlink optical interfaces. The optical signal from the uplink optical interface is assigned to all the downlink optical interfaces, and the optical signal from the downlink optical interface is assigned to the only uplink optical interface. The intensity of the optical signal from each downlink optical interface can be the same or different. 

      From the technical point of view, there are two main types of optical splitter: hot-melt pull-cone (FBT) and PLC planar waveguide. Generally speaking, 1X2 and 1X4 can use hot-melt taper type, 1X4 and above are recommended to use PLC planar waveguide type, PLC spectrometer using semiconductor technology, good spectral consistency, good channel uniformity. PON is the first choice for construction. 

      Beijing Guangrun Technology Co., Ltd. Gigabit and Gigabit full range of spectrometers can completely copy one or more copies of data to downstream equipment without affecting the transmission of the original link data, ensuring the stability and reliability of data collection. The full series of spectrometers can be used to solve the data image and acquisition in most applications. 

     When the spectrometer divides the normal link, the intensity and power of the optical signal are allocated to the links after multiple splits according to the corresponding proportion. Operators typically use 5:5, 7:3 and 8:2 as the proportions, 7: 1.5:1.5 and 8:1:1 as the proportions, and 7:1:1:1 as the proportions. Optical networks, which usually use spectrometers to monitor link traffic, are shown below. Multi-channel optical data from the internet, after being split by the GRT spectrometer, part of the data is sent to the router (or switch), and the other part of the data is sent to the data analysis server via the link aggregation device. Used for monitoring and analyzing link data. 

      五、Customer evaluation 

      Customers use this scheme to effectively solve the problem of trunk line shunting. After long-term application, the stability of the product and the effectiveness of the program are tested, and the products and programs are very satisfied. It has been widely used in the subsequent telecommunications project.