Whether it is enterprise network or home network, fast and reliable Ethernet is an inevitable requirement. Because of this, some home users begin to consider upgrading the previous 1g optical fiber home network to 10g, but for home users, 10G Optical fiber network is a new field. This article will provide you with some useful skills and typical 10g home fiber networking solutions, which is convenient for you to plan and deploy efficient and economical 10g home fiber network.
What is 10G Optical Network?
Ethernet is a computing network technology that almost accompanies network computing. Over the years, the network speed has gradually evolved from 10MB / s to 100MB / s, 1000mb / s and 1GB / s. After the network speed reaches 10Gb / s, it will no longer take "ten times" growth, and the next speed will be 40Gb / s. The latest generation of data center network is designed to transmit at 400Gb / s, and there are plans to increase the transmission speed to 1.6tb/s.
The way to realize 10GbE transmission: 10gbase-sr, 10gbase-lr, 10gbase-er and 10gbase-lx4 applied in LAN and data center; 10gbase-sw, 10gbase-lw and 10GBASE EW applied in Wan. These transmission modes have different characteristics, and the transmission length is different with different types of lasers and fibers. It is worth noting that the cost of each choice is very different. The selection of transmission modes for LAN and data center applications is reduced to three main specifications: SR (short wave, short distance), LR (long wave, long distance) and ER (ultra long wave, ultra long distance).
The structure of 10GbE Ethernet switch is provided with the port for inserting the transceiver. The main function of the transceiver is to convert the 10GbE network electrical signal in the switch into the optical signal sent through the optical fiber, and convert the optical signal received through the optical fiber into the 10GbE network electrical signal. In the early 10 Gigabit Ethernet, there were various transceivers, but then the small hot swappable transceiver based on LC duplex connector became the actual standard. Compared with previous transceivers, it has low carbon footprint and low power consumption. A network switch of one rack unit (1RU) can provide 48 ports.
The emergence of 10GbE Ethernet brings great changes to the optical fiber network of LAN and data center. These new 10gbase-sr transceivers use VCSEL lasers, which are cheaper than single-mode lasers, but more efficient than previous multimode led emitters. These vertical cavity surface emitting lasers have a very concentrated spot (about 30 μ m in diameter) and need new laser optimized multimode fibers. Although traditional om1 (62.5 / 125) and om2 (50 / 125) optical fibers can be used, their transmission range is very limited due to their limited bandwidth capacity. The new enhanced bandwidth fibers comply with ISO / IEC 11801-1 standards in the form of OM3 and OM4. OM3 and OM4 cables are usually equipped with aqua sheath to distinguish them from the traditional orange or gray sheathed om1 and om2 cables.
In the specification file of 10gbase-sr, the maximum channel insertion loss is 2.6 dB when OM3 transmission distance exceeds 300 meters, and 2.9 dB when OM4 transmission distance exceeds 400 meters. Channel insertion loss refers to the total optical signal loss from the transceiver at one end of the channel to the transceiver at the other end of the channel. These two parameters are closely related - as the channel length decreases, the allowable loss value increases, which is greater than the optical attenuation value reduced due to the shortening of the fiber length. This is because, in order to compensate the influence of signal distortion, when the transmission length reaches the maximum distance, it is necessary to increase the loss margin.
Optical Ethernet technology is the integration and development of two mainstream communication technologies: Ethernet and optical network. It integrates the advantages of Ethernet and optical network, such as Ethernet is widely used, low price, flexible networking, simple management, high reliability and large capacity of optical network. The high speed and large capacity of optical Ethernet eliminates the bandwidth bottleneck between LAN and WAN, and will become a single network structure integrating voice, data and video in the future.
Among the many technologies to build optical Ethernet, 10G Ethernet technology is the link layer technology that is highly concerned by the industry. The advantage of 10G Ethernet is to reduce the complexity of the network, compatible with the existing LAN technology and extend it to the WAN, reduce the system cost, provide faster and updated data services. It is a link technology that integrates LAN / MAN / WAN, and can build end-to-end network Ethernet link to the end.
What devices are needed to deploy 10G home optical network?
For 10G home optical network, home 10 Gigabit switch, router and wireless access point (AP) are essential components. According to different needs, home network may also need network server, 10 Gigabit network card, Poe switch, IP camera and other equipment.
How to choose the best equipment for 10G home optical network?
It can be seen from the above that home network switch, router and wireless access point are the three most important network components of home optical network. If you want to obtain efficient and reliable network, high-quality equipment is essential.
Home network switch
There are many kinds of network switches on the market, such as Gigabit switch, 10 Gigabit switch, 25g switch, Poe switch, etc. For 10G home optical network, you may need 10 Gigabit network switch and PoE switch.
10 Gigabit network switch
A 10 Gigabit switch is a device that can provide more than 10 gigabytes of throughput in one second.
The 10 Gigabit Ethernet technology provides more update functions, greatly improves the QoS, and is quite revolutionary. Therefore, it can better meet the needs of network security, quality of service, link protection and other aspects. The main purpose of network construction of Internet bar industry is to build the performance, bandwidth and main network services of Internet bar network into an advanced, mature, reliable, stable and safe network and technology, and build a high bandwidth, high reliability and manageable information base.
The continuous improvement of 10 Gigabit Ethernet technology meets the growing needs of users. In the development process, 10 Gigabit Ethernet technology has been continuously improved, such as the expansion of physical medium from thick coaxial cable to thin coaxial cable, twisted pair and optical fiber, the progress of network function from shared Ethernet to full duplex and switched Ethernet, and the transmission rate from 10 MB to 100 MB, 1000 MB, 10 GB and even 100 MB The promotion of GB greatly meets the needs of users for various applications.
PoE switch
PoE (power over Ethernet) refers to the technology that can provide DC power supply for some IP based terminals while transmitting data signals without any changes to the existing Ethernet cat. 5 wiring infrastructure. Poe technology can ensure the security of the existing structured cabling, ensure the normal operation of the existing network, and minimize the cost. Poe switch is a switch that supports network cable power supply. It can not only realize the data transmission function of ordinary switch, but also supply power to network terminal at the same time.
How to choose the most suitable home network switch?
1. Function and performance
For home network switches, you can choose to support basic functions, such as QoS, VLAN and security. Stacking function and Ethernet power supply function can also be considered. Stacking function can bring more flexibility to the network. If you want to upgrade the network or need to add more network devices to the network, stacking multiple switches may be the most effective and economical solution, because it can meet your needs without changing the original network architecture. The Ethernet power supply function can supply power for POE devices. If you need to deploy Poe devices such as IP cameras in your home network, it is recommended that you choose the switch that supports Ethernet power supply.
2. Port
Generally, the port types of home network switch include electric port (RJ45 port) and optical port (such as sfpgsfp + port). Among them, the electric port is generally connected with CAT6 network jumper, while the optical port generally needs to be used with optical module and optical jumper. For example, the SFP + port is generally used with SFP + optical module and LC duplex optical jumper.
3. Cost
Because the cost of electric port is lower than that of optical port, the cost of RJ45 port network switch is usually lower than that of optical port network switch. The cost of NMS is higher than that of NMS.
Home router
Router is a necessary device to connect home network to Internet. For 10G home optical network wiring, the selected router should be equipped with at least one SFP + port. At present, the router is divided into wired router and wireless router. However, wireless routers usually offer more expensive coverage than wired or WiFi routers. Therefore, if your home network covers a large area, considering the cost and the stability of the connection, it is recommended that you give priority to the wired router (which can be used with the wireless access point).
The main features of home router are as follows
1. Share Internet network. It is compatible with the access modes provided by various broadband access providers by connecting Ethernet, xDSL or cable modem.
2. Easy to use and manage. All Chinese configuration environment, through the web interface settings and management. It provides quick setting and setting wizard function. With simple operation, you can set up multiple home computers to access the Internet at the same time.
3. Flexible Internet access control. It can configure different Internet access strategies for different computers.
4. Processing capacity. High performance processor, with outstanding throughput and strong load capacity, can fully guarantee the quality of real-time applications in the network.
5. Various network applications. Support UPnP, DHCP server, DNS, DDNS, NTP and other functions, and fully support all kinds of voice, video chat, all kinds of online games and other Internet network applications.
6. Protect home network security. It can prevent the computer in the home from being directly exposed to the Internet network, and make the home internet access more secure.
Before deploying 10g home optical network, the most important thing is to conduct a comprehensive evaluation of your home network to ensure that the later deployed network can meet all your traffic needs.
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