PoE Switch Vs. PoE Injector: Which One to Choose?

Network has become an essential part of our daily life. To make life easier, there are various types of network devices on the market, such as such as IP phone, wireless access point and IP camera. Each of them not only has to get access to the network through the Ethernet cable, but also needs power supply via power cord. When the number of devices is a little more, the cabling will be complicated. How to solve this problem? Recently, PoE (Power over Ethernet) technology is popular, which can transmit both power and data through an Ethernet cable at the same time. When it comes to PoE, there are two hot devices: PoE switch and PoE injector. And people often ask: PoE switch vs. PoE injector: which one to choose? This article will make a comparison between them and help you make the choice.

What is PoE Switch?

PoE switch is a network switch that has Power over Ethernet injection built-in. When connected with other network devices, PoE switch will detect whether they are PoE-compatible and enable power automatically. Therefore, it is a simple solution to add PoE to your network by using PoE switch. In addition, there is PoE+ switch available on the market. PoE switch utilizes the original PoE standard, IEEE 802.3af, which provides up to 15.4W of DC power to each device. While PoE+ switch use the latest PoE+ standard, IEEE 802.3at, also known as PoE class 4, which provides up to 30W of power to each device. That’s to say PoE+ switch can provide almost twice as much power as PoE switch. The following figure shows a 8-port PoE switch which is popular among many users.

8 port PoE switch

What is PoE Injector?

PoE injector is used to add PoE capability to regular non-PoE network links. The following figure shows the application of PoE injector. Both PoE injector and non-PoE Ethernet switch are powered on. Then they are connected by an Ethernet cable. By doing this, the PoE-compatible IP phone, wireless access point and IP camera can work through one Ethernet cable respectively connected to PoE injector. In network deployment, PoE injector can provide a versatile solution when fewer PoE ports are required.

application of PoE injector

PoE Switch Vs. PoE Injector: Which One to Choose?

PoE switch is all-in-one box with no additional appliance and the ports on it can be used to manage both network and power. While PoE injector can be added onto existing networks with no need to change the switch and is easy to mount anywhere. As for which one to choose, it really depends on the specific requirement. For example:

  • If you only have a few things to power, then PoE injectors are good. The cost is lower when compared to a PoE switch.
  • If the PoE goes out in a PoE switch, all PoE has the chance of going out. But if a PoE injector goes out, it only affects one device.
  • If you do have to replace a PoE injector, you can just replace the bad injector without any production downtime anywhere else in the network.

Conclusion

Both PoE switch and PoE injector utilize PoE technology which makes network deployment even simpler and have their own advantages. It is important to figure out what you need before you make a choice between them. What’s more, please ensure your device supports PoE before connecting into a PoE-enabled network.

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Smart Managed Switch Vs. Unmanaged Switch

Network switch, a box-shaped device, plays an important role in a network deployment. To achieve high network performance, a suitable switch is required. There are smart managed switch and unmanaged switch on the market. How much do you know about them? Smart managed switch vs. unmanaged switch, which one should you choose for your network deployment? Keep reading, and you will find the answer.

Smart Switch Vs. Managed Switch

If you look through the official website of several vendors, you may find that some offer smart switch, the others provide managed switch. Smart switch vs. managed switch, what’s the different between them? Smart switch has some features that managed switch has, but are more limited. Besides, smart switch is cheaper than managed switch. So, it’s a cost-effective alternative to managed switch. In fact, “smart switch” and “managed switch” are terms invented by vendors. And the exact meaning may vary from vendor to vendor. To some extent, smart switch and managed switch are virtually the same. In the following part, I combine them as smart managed switch for easy reading.

Smart Managed Switch Vs. Unmanaged Switch

As smart managed switch and unmanaged switch have different features, they are used in different applications.

Smarted Managed Switch

Smart managed switch offers features like QoS (Quality of Service), Simple Network Management Protocol (SNMP), command line interface (CLI), Rapid Spanning Tree Protocol (RSTP), redundancy capability, VLANs, LACP and so on. The greatest advantage of smart managed switch is that you can change the configuration of the switch to satisfy your specific networking needs. Smart managed switch is especially suitable for enterprises that need to manage and troubleshoot their network remotely and securely, allowing network managers to monitor and control the traffic to achieve optimal network performance and reliability. The following figure shows FS S5800-8TF12S smart managed switch which provides high port density with 8-port 1GbE RJ45 and 8-port 1GbE SFP combo and 12-port 10GbE uplink in a compact 1RU form factor.

FS S5800-8TF12S smart managed switch

FS S5800-8TF12S smart managed switch

Unmanaged Switch

Unmanaged switch is basic plug-and-play switch with no remote configuration, management, or monitoring options. It allows Ethernet devices to communicate with one another (such as a PC or network printer) by providing a connection to the network and passing on information to where it needs to go. Therefore, unmanaged switch is usually used to extend the number of Ethernet ports. Unmanaged switch can be desktop or rack mounted. It is less expensive than smart managed switch and is suitable for home use, SOHO and small businesses.

Which One to Choose?

From the above content, we can conclude that smart managed switch vs. unmanaged switch, the biggest difference between them is the configuration feature. As for which one to choose, it really depends on your need. If you just want to set up a home network or add more Ethernet ports, unmanaged switch is good enough. If you need configuration options like VLAN and QoS, you will have to use smart managed switch.

A Closer Look at Fanless Switch

If your laptop has built-in fan, you must have gone through such experience: when your laptop has been working for a long time, it will be heating. Then, you may start the fan to cool your laptop down. However, there will be noise. So does network switch. Compared with other optical components, network switch is larger. And ongoing work will cause overheating. Therefore, many network switches are designed with fans and very noisy. Is there any solution that is the best of both worlds? The answer is “Yes”. Fanless switch can do this. This article will guide you have a closer look at fanless switch.

Overview of Fanless Switch

Taken literally, fanless switch does not have any fans built into it, thus it has a quiet operation. But how is it cooled down? In fact, engineers employ passive cooling system for fanless switch to transfer heat. The passive cooling system achieves high levels of natural convection and heat dissipation by utilizing a heat spreader or a heat sink to maximize the radiation and convection heat transfer modes. Therefore, it can provide energy efficiency and lower financial cost. With passive cooling system, fanless switch is a cost-effective and energy-efficient solution that maintains optimal operating temperature without causing much noise.

passive-active-cooling

While fan switch utilizes active cooling system which refers to cooling technologies that rely on an external device to enhance heat transfer. Through active cooling system, the rate of fluid flow increases during convection, which dramatically increases the rate of heat removal. Apart from the unpleasant noise, the main disadvantage of active cooling system is that it requires larger power consumption and costs more than passive cooling system.

FS 8-Port Gigabit PoE Fanless Switch

FS 8-port Gigabit PoE fanless switch is designed with 8x 10/100/1000BASE-T RJ45 Ethernet ports, 1x console port, and 2x gigabit SFP slots. It has Layer2+ switching features and the switching capacity is 20Gbps. This 8-port fanless switch also support PoE function. It can supply power to network equipment such as weather-proof IP cameras with windshield wiper and heater, high-performance access point and IP telephone. The max power consumption of this managed PoE switch is 130W. In addition, this fanless switch has Mini body. Whether it is in the data room, office, or installed to other places, it can save you more space and make networking more convenient. To accomplish the link, you can use 100BASE SFP, 1000BASE SFP, BIDI SFP, CWDM SFP, DWDM SFP optical transceiver or 1000BASE-T SFP copper RJ-45 transceiver. FS.COM provides many high-quality compatible SFP modules for 8-port fanless switch. Here is a figure of FS 8-port Gigabit fanless switch for you.

8-port-fanless-poe-switch

Conclusion

Network switch has become an integral part of optical link, serving as the central system. But the noise is the main problem that many data center managers are faced with. To overcome this, silent fanless switch has already been available on the market. At FS.COM, small and medium-sized business can find reliable and affordable fanless switches. Like the above fanless switch, it is US $159.00. These switches are designed with high resistance to electromagnetic interference. They also features superior performance in stability, environmental adaptability. What’s more, FS.COM provides service like a one-year limited warranty, including any quality problems during the free maintenance. Besides, there are cheap and quality optical transceivers at FS.COM. And all of them are tested for 100% functionality and guaranteed compatible for outstanding network performance.

Are You Ready For 400G Ethernet?

The rapid development in telecom industry is driving massive demand for higher bandwidth and faster data rate, from 10G to 40G and 100G, will this keep going on? The answer is definitely “Yes”. Some time ago, migration from 10G to 40G or 25G to 100G has been a hot spot among data center managers. While recently, 400G solutions and 400G components are coming. Are you ready for 400G? This article will share some information about 400G Ethernet.

Overview of 400G

In the past couple of years, modules with four 25/28G lanes or wavelengths are the solutions for 100G Ethernet. However, they were expensive at the beginning. Until 2016, the optical components industry has responded to the demands with 100G solutions that already cost less per gigabit than equivalent 10G and 40G solutions, and new developments to further drive down cost and increase bandwidths. The next generation is 400G Ethernet. The IEEE has agreed on PSM4 with four parallel fibers for the 500 meters 400GBASE-DR4 specification that is part of the IEEE802.3bs standard being developed for approval by the end of 2017. The industry is already developing optical components for 400G Ethernet solutions. The following figure shows telecom and datacom adoption timelines.

Telecom and datacom adoption timelines

We can visually see that telecom/enterprise applications first adopted 100G technology in the form of CFP modules. Data centers generally did not adopt 100G interfaces until the technology matured and evolved towards denser, lower power interfaces, particularly in the form of QSFP28 modules. However, as the hyperscale data center market scales to keep pace with machine-to-machine communications needs, data center operators have become the first to demand transmission modules for data rates of 400G and beyond. Therefore, the 400G era is now upon us.

Modules for 400G

We know that the QSFP28 modules for 100G Ethernet and SFP28 modules for 25G Ethernet are now the dominant form factors. Though CFP, CFP2 and CFP4 modules remain important for some applications, they have been eclipsed by QSFP28 modules. To support higher bandwidth, what is the right module for 400G? The first CFP8 modules are already available. QSFP-DD is backward compatible with QSFP, and OSFP may deliver better performance, especially as networks move to 800G interfaces.

CFP8 module: CFP8 module is the newest form factor under development by members of the CFP multisource agreement (MSA). It is approximately the size of CFP2 module. As for bandwidth density, it respectively supports eight times and four times the bandwidth density of CFP and CFP2 module. The interface of CFP8 module has been generally specified to allow for 16 x 25 Gb/s and 8 x 50 Gb/s mode.

100G CFP to 400G CFP8

QSFP-DD module: QSFP-DD refers to Quad Small Form Factor Pluggable Double Density. It uses eight 25G lanes via NRZ modulation or eight 50G lanes via PAM4 modulation, which can support optical link of 200 Gbps or 400 Gbps aggregate. In addition, QSFP-DD module can enable up to 14.4 Tbps aggregate bandwidth in a single switch slot. As it is backwards compatible with QSFP modules, QSFP-DD provides flexibility for end users and system designers.

QSFP-DD vs QSFP

OSFP module: OSFP (Octal Small Form Factor Pluggable) with eight high speed electrical lanes is able to support 400G (8x50G). It is slightly wider and deeper than the QSFP but it still supports 36 OSFP ports per 1U front panel, enabling 14.4 Tbps per 1U. The OSFP is able to meet the projected thermal requirements for 800 Gbps optics when those systems and optics become available in the future.

OSFP module

Conclusion

Judging from the current trends, 400G will become the mainstream in the near future. But there are still some challenges for it to overcome, such as high capacity density, low power consumption, ever lower cost per bit, and reliable large-scale manufacturing capabilities. You never know what surprise the network will bring to you, let’s wait and see the 400G’s time.

Originally published at: http://www.fiber-optical-networking.com/are-you-ready-for-400g-ethernet.html

Focus On FTTH Cabling Solution

Fiber optic cable has been widely used in telecom industry for its fast transmission speed. As people’s demand for bandwidth is increasing, optical fiber cable is not only used in enterprise network, but also applied to home network deployment. And FTTH (Fiber to the home) project is a typical example. This article will focus on FTTH cabling solution.

Overview of FTTH

FTTH refers to the installation and use of fiber optic cable all the way to individual buildings such as single family units (SFUs), multidwelling units (MDUs), providing high-speed broadband service. Take FTTH project in residential area for example, usually, the broadband service provider will set a distribution point near or inside a building. And fiber optic cables are deployed in this building to connect every required house to this fiber distribution point, thus providing broadband services to end users.

FTTH cabling solution

Advantages of FTTH

FTTH is an idea cabling solution for home network users who need high and reliable bandwidth for some applications, such as video chats and online conversation. In addition to this, is there any other advantage of FTTH?

  • FTTH is a passive network project which needs no active components, thus the cost of network installation and maintenance is not very high.
  • Fiber optic cable is light, so the installation process does not need much labor..
  • Fiber optic cable has high stability, and it will not be easily corroded by lightning or rain, or cause leakage.
  • Fiber optic cable can provide unlimited bandwidth. The development of technology leads to further expansion of people’s demand for bandwidth. For Ethernet cable, different categories have their own data rate limits and transmission distance limits. But for optical fiber cable, the bandwidth limit is up to how much bandwidth the broadband service provider offers.
  • FTTH project is a cost-effective cabling solution for present and future, since you have no need to worry about the upgrade for your cabling system.
  • FTTH project is designed with a lifespan of at least 30 years. Therefore, it is imperative that investments to the FTTH infrastructure are suitable for future needs.
Cable Options for FTTH

FTTH project is applied in many areas, such as indoor section, outdoor section. To fulfill the cabling requirements for different areas, different types of fiber optic cables are well developed.

Indoor cable: FTTH indoor cable is used inside a building or house to connect the FTTH user end equipment. Its fiber count typically is 1, 2 or 4 optical strands, commonly combined with two non-metal enhanced FRP/Metal/KFRP which can provide sufficient tensile strength and good resistance to lateral crushing to protect the fiber inside.

Drop cable: FTTH drop cable connects Network Access Point (NAP) to the subscriber premises. Drop cable contains only 1 or 2 fibers for the connecting circuitry and possibly additional fibers for backup or for other network architecture reasons. It is designed with attributes such as flexibility, less weight, smaller diameter, ease of fiber access and termination.

Distribution cable: Fiber distribution cable is ideal for applications requiring a single termination point with multiple fibers. It has a tight buffered design so it can be installed in intra-building backbone and inter-building campus locations without expensive transitions between cable types.

Conclusion

As a cost-effective cabling solution, it gains great popularity among people. So far, FTTH project has entered thousands of households. What’s more, it has been promoted as a national strategy. So, are you ready to embrace the benefits of FTTH project? FS.COM provides high quality fiber optic cables at low prices, such as single mode fiber and multimode fiber. Also, it provides custom service for fiber optic cabling.

Comparison Between Managed Switch And Unmanaged Switch

As an important part of the whole data link, switch has been a hot spot. According to Ethernet standard, it can be divided into 1G switch, 10G switch, 40G switch and 100G switch; according to port configuration, it can be classified as 8 port switch, 16 port switch, 24 port switch and 48 port switch; according to PoE technology, there are PoE switch and non-PoE switch. But, do you know there are managed switch and unmanaged switch? This article will make a comparison between them.

Overview of Managed Switch And Unmanaged Switch

In a networking, a switch receives a message from any device connected to it and then transmits the message to the target device. Within a LAN, the switch can handle and transmit data among multiple devices via a intelligent and efficient way. As for managed switch and unmanaged switch, the key difference between them is that managed switch can be configured and it can prioritize LAN traffic to make the most important data get through; while unmanaged switch is a “plug and play” device. It can’t be configured or analyze the data traffic.

managed switch VS. unmanaged switch

Comparison Between Managed Switch And Unmanaged Switch
  • Managed switch gives you better control over your LAN traffic and offers advanced features to control the traffic.
  • Managed switch has all the features of unmanaged switch and additionally has the ability to configure, manage, and monitor your LAN. So this helps you to monitor and decide who should have access to your network and gives you greater control over data flow through your network.
  • Unmanaged switch does not support any configuration interface and options. It is like plug and play device and you need to connect your computer or other network devices directly to the unmanaged switch. If there are no advanced applications needed, then unmanaged switches should be the best choice.
  • Managed switch uses protocols such as SNMP or Simple Network Management Protocol for monitoring the devices on the network, which helps in the exchange of management information between network devices.
  • Managed switch with Quality of Service (QoS) feature allows you to prioritize your network traffic by assigning a higher priority to the critical traffic. This helps to improve network performance and helps in better transmission of delay-sensitive data such as real-time voice.
  • Managed switch can be used to isolate traffic between different user groups. This segmentation and isolation of network traffic help to reduce unnecessary traffic. For instance, you can segregate traffic between your finance and marketing groups, so that critical finance information can flow without delay to the finance users and not get bogged down by marketing traffic. This allows better network performance and additional level of security.
Conclusion

When it comes to which one to choose, it is mostly about two things: budget and application. Managed switches are costlier than unmanaged switches. But managed switches definitely have more benefits and ensure improved, consistent network performance. Weighing the pros and cons of both the types of switches, each business needs to evaluate its network needs. If you just want to setup a network, unmanaged switches are good enough. If you need configuration options like like VLAN, QoS you will have to use a managed switch. FS.COM can provide quality managed switch, such as 8 port managed PoE/PoE+ switch, 24 port managed PoE/PoE+ switch. Also, they have cost-effective optical transceiver and optical cable.

Deploy Network in A New House

Network has changed our lifestyle and it has become an important part of our daily life. Therefore, home network deployment is a very common project. When it comes to the components required for the network deployment, many people would say Ethernet cable and router, without hesitation. However, when you start the project, you will find it is not that simple. To deploy network in a new house, future-proof cabling and cost-effective components are two essential elements. And this article will share some tips with you based on these two elements.

home network deployment

Run Conduit

We know that conduit can protect cable from damage, in addition, it will allow you to pull new wiring in the future. No matter what wires you require in the future, you can easily replace them. Remember to run more conduit than you think you need. Run conduit to every room. Typically, run it to whichever wall you’re thinking of placing your equipment. Also, run it to locations in hallways and on floors where you may place future routers/access points for wireless networking. You will find that Power over Ethernet is useful for this.

Cat6 Cable Is Fine

For Ethernet cable, Cat6 cable is fine for all current standards unless you have a giant mansion. Cat6 cable is a standardized twisted pair cable for Ethernet and it is backward compatible with the Cat3, Cat5 and Cat5e cable standards. In addition, Cat6 cable provides performance of up to 250 MHz and is suitable for 10BASE-T, 100BASE-TX (Fast Ethernet), 1000BASE-T/1000BASE-TX (Gigabit Ethernet), and 10GBASE-T (10-Gigabit Ethernet). For transmission distance, Cat6 cable can reach 100 meters for slower network speeds (up to 1,000 Mbps) and higher network speeds over short transmission distance—it can achieve only 55 meters at the speed of 10 Gbps and 33 meters in high crosstalk conditions. You only need Cat6a cable if you plan to run cable at 10 Gbps and longer than 55 meters (180 ft). Also, remember to have “extra” cables which will save you enormous hassle and expense.

Dual Band Router Will Be Better

We know that wireless network utilizes either 2.4 GHz frequency band or 5 GHz frequency band. The 2.4 GHz wireless network covers a larger range than 5 GHz wireless network, but 5 GHz band can provides faster speed. In wireless home network, many older Wi-Fi devices do not support 5 GHz band. It is not difficult to find that 2.4 GHz and 5 GHz have their own advantages. As a result, dual band router will be better for your home network deployment.

Utilize PoE

If you want to set up multiple access points and IP cameras, PoE technology is a good option which can realize the power and data transmission over the same Ethernet cable at the same time. PoE devices utilize the original PoE standard, IEEE 802.3af, which provides up to 15.4W of DC power to each device. In addition to wireless access point and IP camera, there are some other PoE devices on the market, such as IP phone and PoE switch.

PoE technology

Conclusion

In fact, once you have decided to deploy network in your new house, there will be a lot of things that you have to think about, such as which type conduit to run, how long cable to buy, where to place the router, how many access points to set up, which kind PoE switch to buy, and so on. But there is another important thing that you must pay attention to, that’s where to buy what you need. FS.COM can provide high quality products at low price, such as 305 meters (1000 ft) is US$ 120.00, 8 port PoE switch is US$ 159.00.

Originally published at: http://www.fiber-optical-networking.com/deploy-network-in-a-new-house.html