无标题

[yourmellyguostuff-blog]

400G: Titanic Revolution in Data Center

Nowadays, with the rapid growth of data centers, people’s need for better network capacity and higher speed is increasing dramatically. Consequently, the Ethernet speed upgrade has become a hot issue in recent years. The past few years have witnessed titanic revolution of Ethernet speed from 1G, 10/25G to 200G. And 400G will be the next driving force of data center. Recently, FS has launched several 400G direct attach cables to follow the trend. Then what is 400G Ethernet network? And what is new in the current 400G market? This post will give you the answer.

What Is 400G Ethernet?

400G Ethernet is also known as 400 Gigabit Ethernet. It is developed by IEEE P802.3bs Task Force and is published in 2017. And 400 Gigabit Ethernet is an advanced version of 100 Gigabit Ethernet because the speed of 400 Gigabit Ethernet is four times as fast as 100 Gigabit Ethernet and it can provide a denser configuration than 100 Gigabit Ethernet. Besides, the products of 400 Gigabit Ethernet adopt 8x 50G serial links, which are based on the latest PAM-4 module technology.

What Is New in Current 400G Market？

Although 400G is not common in the current market, there are many new products of 400G such as 400G transceivers, 400G DAC cables, 400G WDM and so on. And the following part will focus on 400G DAC in FS and 400G transceivers.

400G DAC

Nowadays, several DACs such as 400G QSFP-DD to QSFP-DD DAC and 400G QSFP-DD to 8x SFP56 DAC have been launched in the market. Detailed information about these two types of DACs will be illustrated below.

400G QSFP-DD to QSFP-DD DAC

The connectors of 400G QSFP-DD to QSFP-DD DAC allow this cable backward compatible with existing QSFP modules. Consequently, we can use one cable for both channel speed and provide flexibility for end users and system designers. Its data rate can reach 400Gbps at maximum, which can be applied in data centers, high performance computing and so on. Companies like Arista, Mellanox and Bizlinktech already have launched this produst. FS has three kinds of 400G QSFP-DD to QSFP-DD DAC ranging from 1m to 3m, and the price of three types is different, ranging from 170 to 300 dollars.

400G QSFP-DD to 8x SFP56 DAC

The 400G QSFP-DD to 8x SFP56 DAC has better signal integrity. Its maximum data rate can reach 400Gbps. This DAC uses SFP56 pluggable modules. And the SFP56 pluggable modules are one of the form factors of 50G modules. The SFP56 pluggable module has the same size as SFP, SFP+ and SFP28. Companies like Ecinetworks has launched this DAC. Besides, this 400G QSFP-DD to 8x SFP56 DAC in FS has three types ranging from 1m to 2.5m. And the price ranges from 290 to 470 dollars.

400G Transceivers

Currently, based on different form factors, 400G transceivers in the market can be divided into 400G CFP8, QSFP-DD, OSFP, and COBO transceivers. Some detailed information about these transceivers will be elaborated below.

400G CFP8

Currently, CFP8 FR8/LR8, CFP SR16, and CFP DR4 are the four common types of 400G CFP8 transceivers in the market. These types have the same bandwidth of 400Gb/s. 400G CFP8 can allow for 16 x 25 Gb/s and 8 x 50 Gb/s mode, and its transmission distance can reach 10km at maximum. And these four types of 400G CFP8 has higher power consumption and large size, so the cost of this transceiver may be higher. Currently, 400G CFP8 has been launched by Finisar.

400G QSFP-DD

400G QSFP-DD is known as Quad Small Form-factor Pluggable Double Density. It can support more high-speed electrical interfaces and has higher density than QSFP28. 400G QSFP-DD has the same appearance of QSFP transceiver, but this transceiver has an additional row of electrical contacts. The connector of QSFP-DD has eight 50G lanes which can support high speed transmission. The biggest advantage of 400G QSFP-DD is that it can backward compatible with QSFP series modules, such as QSFP and QSFP28, which is a flexible choice for system designers. But this transceiver can not better solve the problem of heat dissipation. And companies like Vitex-Tech, Mitscomponent have already sold this transceiver on their website.

400G OSFP

400G OSFP refers to 400G Octal Small Form-factor Pluggable. Its connector has eight 50G lanes just like QSFP-DD. This transceiver is equipped with a radiator, which can realize better heat dissipation. But it can not be back compatible with QSFP series modules because it has a bigger size than the QSFP. And Vitex-Tech and Eoptolink have already sold 400G OSFP transceivers on their website.

400G COBO

COBO means Consortium for On-Board. Although its flexibility is not so good as the above transceivers, this transceiver has high module density and better network performance. Therefore, COBO is regarded as the next-generation transceiver for 800G or beyond. In addition, 400G COBO transceivers are installed internally to the line-card equipment in a controlled environment. Currently, 400G COBO transceiver is only a concept, which means it has not been launched by any company yet. But Microsoft is one of the main supporters for this kind of transceiver.

FAQs About 400G Transceivers

1.Can I plug in an OSFP module into a QSFP-DD port, or a QSFP-DD module into an OSFP port?

No. Just as mentioned above, QSFP-DD port and OSFP port don’t have the same size and they are two different form factors of the module. And they must be matched with corresponding systems and modules.

2.Can I have an OSFP on one end of a 400G link, and a QSFP-DD on the other end?

Yes. Just as mentioned above, the OSFP and QSFP-DD are two different form factors of the module. When the Ethernet media and both ends of the link are the same, you can have an OSFP on one end of a 400G link and a QSFP-DD on the other end.

Summary

Although 400G Ethernet network is not widely used in the current market because it faces many challenges, such as higher power consumption and expensive price. The occurrence of the 400G network is more likely to be a titanic revolution of the current network. FS is always following the trend of cutting-edge technology. If you are interested in these new products or want to get more information about this, please contact us via [email protected].

[yourmellyguostuff-blog]

How to Realize Long Distance 40G Network With DWDM Solution

Nowadays, many customers are in need of better data storage capacity and long distance transmission. Faced with this phenomenon, FS has developed DWDM series products such as DWDM Mux, OADM, OEO and so on. And FS is always committed to meeting the specific needs of our customers and providing customized DWDM solutions for them. Currently, one of our customers from the NineStar Connect company is faced with a problem of long distance data transmission and asks FS for help. Let’s see how FS company tackles this problem with DWDM solution.

Background

As mentioned above, this customer is seeking for solution for longer distance transmission. This customer wants to realize 48km transmission, while the maximum transmission distance of 40G QSFP+ optics is limited to 40 km and each 40G interface requires a dedicated fiber between sites. Besides, this customer told FS that their network has a dark fiber linking two sites beyond 40km, but they don’t know the link loss between these sites. Faced with this problem put forward by the customer, FS has designed a DWDM solution to meet this specific need. In the following part, detailed information about this solution will be elaborated.

What Is This DWDM Solution？

From the above topology, we can see that one 40G SR4 QSFP+ transceiver installed on the 40G switch is connected with four 10G SR transceivers by MTP-LC harness cables. So one 40G optical signal can be divided into four 10G signals in this way. In the next step, 10G DWDM SFP+ transceivers on the OEO repeater will be connected with DWDM Mux/Demux for wavelength division multiplexing. And then the optical power will be lowered by using optical attenuator. And the dispersion will be compensated by DCM. When this process is finished, the booster amplifier (BA) will improve the optical power and extend the transmission distance. In the next step, we need to amplify the signal by using pre-amplifier (PA) and then OEO converts the signal to the corresponding DWDM wavelengths. And then the 8ch DWDM Mux/Demux will multiplex different wavelengths of 10G DWDM signals into one fiber and then the signal is transmitted to Site B. Finally, 40G QSFP+ transmission distance can be extended up to 80km in this way.

Why Choose This Solution?

After reading the above introduction of this solution, you may want to know more about its advantages. Here are some reasons for choosing this solution.

Network Capacity Expansion

In this solution, we use MTP-LC harness cables to divide 40G optical signal into four 10G signals and then use an OEO to convert the optical signal into DWDM wavelengths with a transmission distance up to 80km. In this way, we can significantly reduce cost and increase the capacity of the whole network without changing the customer’s existing cabling infrastructure. And we choose 8ch DWDM rather than 4ch DWDM because 8ch DWDM has 4 vacant channels for later network expansion. In addition, using 8ch DWDM duplex bi-directional transmission mode can support 2×40G transmission capacity.

Low Link Loss

In this solution, the expectant optical power of DWDM 10G 80km optical module is 23dB, and the insertion loss of 8ch Mux is 3.5dB. In order to realize better signal transmission, the single-wave output power of BA (Booster Amplifier) needs to be controlled below +8dB, and the single-wave input power of PA (Pre-Amplifier) needs to be controlled above -25dB. This solution can be better used in network link whose link loss is 29-33dB because when the link loss is up to the maximum value of 33dB, there still has a 3dB system margin.

Efficient Equipped Optical Products

FS provides some cost-effective optical products in this solution, including OEO, DCM, PA and BA. These products play different roles in this DWDM solution. The optical power will be lowered by using an optical attenuator in the process of transmission so as to avoid damaging the transceiver. And the use of DCM can compensate for the dispersion in optical transmission. OEO can convert four 10G signals into corresponding wavelengths, which can amplify the optical power in the solution. PA is deployed before the optical receiver so as to amplify the weak optical signals and BA is placed in front of the optical fiber line in order to improve the optical power. Equipped with these optical products, the capacity of the whole network can be improved dramatically.

Conclusion

This solution will be an ideal option for customers who are in seek of 40G long distance transmission. FS is always striving for meeting your specific requirements. If you are interested in this DWDM solution or have the same problem with this customer, we hope this post can offer the reference for you.

[yourmellyguostuff-blog]

How to Realize 100KM DWDM Network With FMT 4000E

Nowadays, DWDM technology has been one of the most commonly used technology in optical transport network (OTN) applications due to the increasing bandwidth need of telecommunication providers. Faced with unpredictable traffic requirements and increasing bandwidth demands, FS has developed a new standardized optical transport solution, which called FMT WDM transport platform. And this FMT WDM transport platform  is divided into four specific series according to different transmission distance, including CWDM solution FMT 1800, DWDM solution FMT 1600E, 4000E, 9600E. In this post, we will take FMT 4000E optical transport platform as an example to illustrate how does this transport platform realizes 100km network connections and its advantages.

What Is FMT 4000E DWDM Network Transport Platform?

As mentioned above, FMT 4000E DWDM network transport platform is one type of the FMT WDM transport platform series. This optical transport platform is a 4U managed chassis. It is equipped with 16 full-size slots and optical layer modules and a wide range of intelligent services modules can be installed in these slots. Equipped optical devices in FMT 4000E will be illustrated in detail in the following part.

Currently, FS has developed two versions FMT 4000E, but these two versions has different transmission. One version can support 160km transmission, while another can support 100km transmission. And this post will focus on FMT 4000E for 100km. This platform can achieve 100km end-to-end dual fiber bidirectional transport and support up to 40 wavelengths from C21-C60 at 100GHz. In addition, this optical transport platform can be applied in metro/regional networks, such as CATV, FTTH/PON, xDSL triple play services, GSM/3G mobile services, business customers storage services and so on.

How Does the DWDM Network Work By Using FMT 4000E

From the above topology, we can find that the optical signal from the switch will be sent to 40CH DWDM MUX DEMUX at Site A for wavelength division multiplexing. And then the optical power will be lowered by using optical attenuator. And the dispersion will be compensated by DCM. When this process is finished, the booster amplifier (BA) will improve the optical power and extend the transmission distance. After 100km fiber transmission, we need to amplify the signal by using pre-amplifier (PA) and then the optical signal will be compensated by DCM again. At this time, the optical signal will be sent to 40CH DWDM MUX DEMUX at Site B for demultiplexing again. Finally, the optical signal will be sent to the switch.

Why Choose This FMT 4000E DWDM Transport Platform？

This FMT 4000E DWDM transport platform has flexible networking because it is equipped with intelligent DWDM MUX/DEMUX, integrated with DWDM EDFA and DCF-based DCM system management. This platform has high channel density because it has up to 40 DWDM channels. And this platform can achieve 100km end-to-end dual fiber bidirectional transport when the fiber link loss is 0.25dB/km and the fiber type is G.652D. In addition, this platform has monitor online management software, which can allow operators and administrators to monitor the performance of the whole network. When the urgent accident occurs, this network management system can notify the user so as to ensure the safety of the network. This system can also provide real-time management for local and remote network. Besides, it will send email to inform you of the performance of the network.

Conclusion

This FMT 4000E optical transport platform will be a cost-effective option for l00km transmission due to its better network performance and centralized network management. And FS is always striving for meeting your specific needs and this product is customized for each customer. If you are interested in this product, please contact us via [email protected].

[yourmellyguostuff-blog]

WDM Mux/Demux Transmission Modes Overview

WDM (wavelength division multiplexing) is one of the technologies which can expand the capacity of a fiber optic network without requiring additional fiber, and it plays a very important role in long-haul data transmissions. In a WDM system, there is an important component called WDM Mux Demux (multiplexer/demultiplexer), which can multiplex multiple wavelengths into one single fiber to increase the network capacity. Usually, there are three transmission modes in WDM networks: duplex bi-directional transmission, simplex bi-directional transmission and simplex uni-directional transmission. And this post will illustrate some detailed information about three transmission modes of WDM Mux/Demux.

Duplex Bi-directional Transmission Mode

In this transmission mode, one fiber only transmits one direction optical signal and the reverse optical signal will be sent by another fiber, which is often seen in dual fiber WDM Mux/Demux. And the same wavelengths can be used in two directions. Take the 4CH dual fiber DWDM Mux/Demux for example, the transmit side and receive side of the WDM Mux/Demux are using the same wavelength C21, C22, C23 and C24. And this transmission mode can make full use of the huge bandwidth resources of the optical fiber, and the transmission capacity of one optical fiber is expanded. In the long-distance network, the number of wavelengths can be gradually increased according to the actual traffic volume, which is very flexible.

Simplex Bi-directional Transmission Mode

In this transmission mode, the simultaneous transmission of optical signals in two reverse directions will be realized in one fiber, which can greatly save fiber resources compared with duplex bi-directional transmission mode. This transmission mode are used in transmission between two dual fiber WDM Mux/Demux. The simplex bi-directional link has different wavelengths on the same channel, so single fiber Mux/Demux are always used in pairs. Take the 4CH single fiber DWDM Mux/Demux for example, the transmit wavelength of the client port at side-A (the left side) must match the receive wavelength of the same client port at side-B (the right side). As for the wavelength of the transceiver, it is mainly based on the transmit wavelength of the client port.

Simplex Uni-directional Transmission Mode

Simplex uni-directional transmission means that an optical fiber only transmits optical signals in one direction, and there is no reverse optical signal. The Mux multiplexes the wavelengths at one side, and the Demux demultiplexes the wavelengths at the other side, just like the following picture shown. we can see that wavelengths of the DWDM Mux Demux at the left and right ends are the same. This transmission mode is less popular in the current market because duplex bi-directional and simplex bi-directional transmission modes have the same function of this transmission mode.

FAQs About Three Transmission Modes

1. Does single fiber Mux support simplex uni-directional transmission?

Compared with Mux and Demux in uni-directional transmission (they just multiplex or demultiplex the wavelengths), the single fiber WDM Mux/Demux in the current market can multiplex and demultiplex the wavelengths, which can realize uni-directional transmission.

2. How many channels at maximum will be made for CWDM Mux/Demux and DWDM Mux/Demux respectively in different transmission modes?

In FS, in terms of CWDM Mux/Demux

·Duplex bi-directional: up to 18 channels

·Simplex bi-directional: up to 9 channels

·Simplex uni-directional: up to 18 channels

In FS, in terms of DWDM Mux/Demux

·Duplex bi-directional: up to 40 channels

·Simplex bi-directional: up to 20 channels

Conclusion

In summary, you are more likely to have a general idea about three transmission modes of WDM Mux/Demux. WDM Mux/Demux in FS can expand existing fiber capacity and let operators make full of use of available fiber bandwidth, which will be a cost-effective, flexible solution for operators.

[yourmellyguostuff-blog]

Quick View of Copper Patch Panel Types

Nowadays, patch panels play an essential role in network functionality. By centralizing cables in one place, patch panels make it easy for network administrators to move, add or change complex network architectures. And patch panels can be divided into two types, that is fiber patch panel and copper patch panel. The copper patch panel is designed for both shielded and unshielded copper cables like Cat5e, Cat6, Cat6a. It is commonly used in a local area network (LAN). This post will introduce some common copper patch panel types for you.

Common Copper Patch Panel Types

In the next part, some detailed information about common copper patch panel types will be illustrated.

Cat5e Patch Panel

In general, Cat5e copper patch panels can be divided into shielded and unshielded patch panels. Cat5e shielded patch panels are designed for high EMI environments, while unshielded patch panels are used in areas where has no high power electrical wires. And Cat5e copper patch panel is available in 8, 12, 24 and 48-port sizes. In the current market, 24-port cat5e patch panel is the most popular patch panel. And FS can provide 24-port Cat5e patch panels and 48-port Cat5e patch panels. This patch panel is an ideal option for high density and easy patching solutions in data centers. The following pictures shows an example of the Cat5e patch panels from FS.

Cat6 Patch Panel

Generally, the Cat6 patch panel also can be classified into shielded and unshielded patch panels. And Cat6 patch panel is available in 12-port, 24-port, 48-port sizes. It also meets or exceeds the TIA/EIA 568 industry specification, and can be matched with different kinds of Cat6 cables and accessories. In addition, the Cat6 patch panel is frequently used in Gigabit Ethernet applications. Cat6 patch panel is an ideal option for present and next generation data communications networks and applications. Here is an example of the Cat6 patch panel from FS.

Cat6a Patch Panel

Cat6a patch panel complies with the standard of IEEE 802.3an (10GBase-T). Cat6a patch panel can support Cat6a shielded Ethernet cables. In addition, Cat6a patch panel is designed for sensitive or harsh environments that demand security. This RJ45 patch panel can be used to future-proof your network connection for 10 Gigabit Ethernet and can be installed effortlessly in universal 19" racks/cabinets.

 FAQs About Copper Patch Panel

1. Can I use Cat5e cable with Cat6 patch panel?

Although the insulation layer of the Cat6 cable is thicker than the Cat5e cable, there is usually no termination problem, but the Cat5e cable will be slightly loose on the 24-port Cat6 patch panel, and the network connection will still work.

2. What is a shielded patch panel?

Shielded patch panels are made from robust sheet metal. These panels are also supplied with robust removable rear cable management trays for cable strain relief and neat cable dressing. Its unique contact alignment reduces on alien crosstalk from each connector and enhance the better performance. The shielded patch panels bundle the networks together to connect incoming and outgoing lines and improve the organization of a wired network. Compared with unshielded patch panel, shielded patch panel has better signal transmission performance. As mentioned above, FS provides shielded and unshielded RJ45 patch panels of Cat5e and Cat6.

3. Does Cat6 unshielded patch panel can be connected to the cables directly?

This question depends on which patch panels that you use. In FS, there are punch down patch panel and feed-through patch panel. Feed-through patch panel provides patching without punching down the wires to the ports. With feed-through patch panel, the Ethernet patch cables can be inserted into the ports directly in an easy and fast way. However, as for punch down patch panels, you need to strip the outside protective jacket of them about 3-6 inches from the cable.

 Conclusion

The above content has given some detailed introduction of several common types pf copper patch panels. Since there are many different copper patch panels in the current market, choosing the most suitable one is very important for network management. FS provides Cat5e cables, Cat6 cables patch panels at competitive prices. If you still have any questions about these patch panels, feel free to contact us at [email protected].

[yourmellyguostuff-blog]

UTP vs STP vs SFTP: Difference and Application

Generally, in terms of different bandwidth, network cables can be divided into Cat5, Cat5e, Cat6 and other common types. Based on the function of shielding, network cables can also be grouped into UTP, STP, SFTP. And this post will shed light on some detailed information about UTP, STP, SFTP and help you to have a deep understanding about them.

UTP UTP is also called unshielded twisted pair, and unshielded means no additional shielding like meshes or aluminum foil. It is a ubiquitous type of copper cabling used in telephone wiring and local area networks (LANs). UTP cables use eight wires grouped in four pairs, each composed of a solid-colored wire and a stripped wire. The maximum length of a single segment of UTP cable should not exceed 295 feet to avoid data loss. And UTP is the thinnest and most flexible Ethernet cable on the market, which is easy to work with and install.

STP

STP is also known as shielded twisted pair. It incorporates a conducting shield built of metallic foil enclosing the twisted wire pairs, which obstructs out electromagnetic interference, permitting it to carry data at an enhanced rate of speed. Although STP has the similar quality factor and uses the same connectors as UTP, but the shield of STP must be connected to the ground. STP cables are an idea option for industrial settings with high amounts of electromagnetic interference, such as a factory with large electronic equipment, where they can be properly installed and maintained.

SFTP

SFTP stands for screened fully shielded twisted pair. This SFTP cable uses multiple versions of metal shielding and a tinned copper woven mesh, so the external magnetic field and signal interference can be greatly reduced, and the attenuation of the internal signal can be reduced, and the pulling force of the cable also can be increased.

UTP vs STP vs SFTP: What’s the Difference?

Although UTP, STP and SFTP all belong to the network cable, but they also differ in noise and crosstalk generation, grounding cable, installation, price and transmission rate. The following part will provide you more detailed information about their differences.

·Noise and crosstalk generation: The noise and crosstalk of UTP cables are comparatively higher than STP and SFTP cables because STP and SFTP cables are less susceptible to noise and crosstalk because of their shielded structure.

·Grounding cable: UTP cables don’t need to be connected to the ground, while STP and SFTP cables must be connected to the ground.

·Installation: UTP cables can be installed easily because their smaller, lighter and flexible shapes. While STP and SFTP cables are difficult to be installed due to their complicated components.

·Price: UTP cables have the lowest price than STP and SFTP cables, but UTP cables don’t need much maintenance.

Conclusion

From what has mentioned above, you may likely to have a general understanding of UTP, STP, SFTP. FS provides UTP, STP, SFTP cables at competitive prices. If you still have any questions about these cables, feel free to contact us at [email protected].

[yourmellyguostuff-blog]

12U Wall Mount Cabinet Recommendation

12U Wall Mount Cabinet Recommendation

Nowadays, cabinets play an important role in the data center because they can be used to achieve high-density cabling and improve efficiency of data center network management and operation. According to different applications, cabinets can be divided into sever cabinets and network cabinets. Server/network cabinets are generally divided into two types. There are floor cabinet and wall mount cabinet. As for wall mount cabinet, 6U,9U, or 12U types are commonly seen in the market. This post will focus on two types of 12U wall mount cabinets, some detailed information about them will be elaborated below.

12U Wall Mount Cabinet Overview

For 12U, the “U” stands for the rack unit that is an EIA standard measuring unit for rack mount type equipment. 1U is equal to 1.75″ in height. A 12U wall cabinet means it would have 21″ internal usable space (12×1.75″). As for wall mount cabinet, it is designed to be attached to the wall so as to save spaces. The 12U wall mount cabinet uses a small and compact design, which can be placed on desks or mounted on walls in classroom, retail store or office for storing equipment and saving floor space. Here set two series of 12U wall mount cabinet from FS as examples.

12U GV600-Series Wall Mount Cabinet

With an arc hexagonal perforated front doors and doors on side panels, massive ventilation for servers and network equipment can be guaranteed. In addition, the rear door is equipped with a strong hinge system, which can make back-door access much easier to run new cabling, replace some equipment parts and so on. As for providing weight capacity for your heaviest equipment, this 12U GV600-Series wall mount cabinet uses SPCC material and supports a total load capacity of up to 198.4lbs (90kg). For simple and sturdy mounting, the rack’s mounting holes are positioned 16 inch, so you can securely attach it to wall studs. In terms of cable routing, it has convenient top and bottom ports, which can help cable routing more easier. Because it has massive ventilation, so it can make equipment cool.

12U GW600-Series Wall Mount Cabinet

Usually, 12U GW600-series wall mount cabinet has one glass front door that can be open, closed or locked to keep the inside networking equipment safe and protect the equipment against dust or water. In most cases, this12U cabinet will be installed on the wall with the door facing outward, and the equipment facing the door for easier access. The door can be locked for protecting the equipment against dust or water. As for providing weight capacity for your heaviest equipment, this cabinet also uses SPCC material and supports a total load capacity of up to 132.3lbs (60kg). For simple and sturdy mounting, the rack’s mounting holes are positioned 19.21 inch, so you can securely attach it to wall studs. Comparing with another cabinet mentioned above, this cabinet is a more cost-effective cabinet because it can protect equipment from dust and other hazards. And it can be used in open, unprotected spaces such as warehouses, retail facilities and schools.

Application Scenario

As we mentioned above, the FS 12U cabinet comes with two series. In the following part, we will illustrate how they are applied in different scenarios. The12U GV600-series wall mount cabinet is commonly used in back officies, classrooms and telecom rooms. And 12U GW600-series wall mount cabinet is widely applied in back officies, factories, retail stores.

When you use12U GV600-series wall mount cabinet, the following products are suggested:

1U 24 Ports Cat6 Unshielded Feed-Through High Quality Patch Panel

1U Plastic Single Sided Horizontal Cable Manager with Finger Duct

Single-Phase 15A/250V Basic PDU, 8 IEC320 C13 Outlets, CEE7 Plug, 6.6ft Cord, 1U Rack-Mount.

6in (0.15m) Cat6 Snagless Unshielded (UTP) PVC CM Slim Ethernet Network Patch Cable, Blue

1U 19” Vented Cantilever Fixed Shelf

When you use 12U GW600-series wall mount cabinet, the following products are suggested:

S3900-48T4S 48-Port 10/100/1000BASE-T Gigabit Stackable Managed Switch with 4 10Gb SFP+ Uplinks

1U 24 Ports Cat6 Unshielded Feed-Through High Quality Patch Panel

1U Plastic Single Sided Horizontal Cable Manager with Finger Duct

6in (0.15m) Cat6 Snagless Unshielded (UTP) PVC CM Slim Ethernet Network Patch Cable, Blue

1U 19” Vented Cantilever Fixed Shelf

Conclusion

12U wall mount cabinets will be more effective for individuals and small businesses. We tailor these two types of 12U wall mount cabinets for you and hope you can have a deeper understanding about features and applications of them. FS provides 12U wall mount cabinets at competitive prices. If you still have any questions about wall mount cabinets, feel free to contact us at [email protected].

[yourmellyguostuff-blog]

How to Choose a Network Interface Card?

How to Choose a Network Interface Card?

Network interface cards, which are also called NIC cards or fiber LAN cards. Nowadays, there are a variety of network interface cards in the market. Various network interface cards differ in transmission rate, prices and other aspects. And using different network interface cards may get different network performance. So how to choose different network interface cards is important. This post will give you some tips on choosing network interface card, which is likely to help you to choose the most suitable one.

Types of Network Interface Card

According to the bus interface type of the network card, it can be generally divided into ISA interface network cards, PCI interface network cards, PCI-X bus interface network cards and PCIe network cards. Based on different interface, it can be grouped into Ethernet RJ-45 interface network cards, BNC interface network cards, AUI interface network card, FDDI interface network cards and ATM interface network cards. In terms of transmission speed, there are gigabit network cards, 10G fiber network cards, 25G fiber network cards and 40G fiber network cards. As you can see, there are many types of network interface cards. So how can we choose different types of network interface cards, some tips will be given in the following part.

Tips on Choosing Suitable Network Interface Card

In the following part, some useful suggestions about selecting different types of network interface cards will be elaborated in detail.

Checking Supported Connector Types

Due to different network transmission media, common network interface cards have three different connector types. some network interface cards provide two ports on one card at the same time, and some network interface cards also provide three ports on the card at the same time. These ports are AUI port, BNC port and RJ-45 port. The AUI connector is often used with the thick coaxial cable, the BNC connector IS often used with thin coaxial cable and the RJ-45 port connector is often used with the unshielded twisted pair. Many small local area networks use a thin coaxial cable and a bus network with a BNC connector. The cost of this connector is low, but it is not easy to manage, especially for a large local area network. So you need to choose different types of network interfaces card according to different supported connectors.

Determining the Transmission Rate

Take Ethernet network cards for example, there are 10Mbps, 10/100Mbps, 1000Mbps, even 10Gbps network interface cards in the market. In general, people is more likely to think that the network interface cards which have a higher transmission rate will be the better network card. but it is not true. For example, if you insert a 1000Mbps card network card into your computer which connected with the 100Mbps twisted pair, the maximum transmission rate can only reach 100Mbps, so it is a waste to use this type of network interface card. In order to avoid unnecessary waste, you need to be careful when selecting network interfaces with different transmission rates.

Considering Prices and Brands

The prices of network interface cards in different brands are various. But there are some well-known brands, such as Intel, Netgear, Mellanox, and so on. Those brands are popular in customers because their products have good quality and perfect network performance, which is more likely to meet your requirements for network interface cards. Since the prices of different interface cards are affected by many factors, such as transmission rate, different ports and so on. When you comparing different network interface cards, you should not only consider the prices, but also you need to take each parameter of network cards in different companies into consideration, then make a wise choice.

Paying Attention to the Bus Type

PCI, PCI-X or PCI-E bus intelligent card are commonly used by servers and workstations. And the ISA connector is no longer support the PC. So when you purchase network card for your PC, what you should choose is the PCI-X and PCI-E or PCI card instead of the outdated ISA network card. And the PCIe network interface cards are now widely used in the customers. Here give several types of PCI-E network cards in FS. Just show as the below picture.

         Figure1: Different types of 10G  PCI-E network cards in FS

Compatibility of Operating System

If you want to buy a network interface card, you need to consider which network interface can support your operating system. In general, most network interface cards can support Microsoft® Windows®, but not every interface card will support Linux or Apple’s Mac OS X. So you need to make sure that the network interface is compatible with the operating system that you are using.

Conclusion

As is known to all, the performance of network interface card can greatly affect the network performance and the data transfer rate of the overall network. With the tips mentioned above, we hope this post can give you some inspirations in choosing the proper network interface cards. If you need any help, feel free to contact us at [email protected].

[yourmellyguostuff-blog]

Things to Know About Power Over Ethernet Switch

Nowadays, with the rapid development of network technology, people are in need of a network technology that can support data transmission and power supply. The invention of power over Ethernet switch brings people a lot of conveniences because of their flexibility and reliability. And power over Ethernet switches have been applied in many applications in order to keep network at peak utilization. So what is power over Ethernet switch and how does it work? This post will give you the answer.

What Is Power Over Ethernet Switch and How Does It Work?

Power over Ethernet switch is also called PoE switch. PoE switch belongs to network switch or hub, it can not only transmit network data, but also supply power to connected devices over one Ethernet cable at the same time, which can greatly simplify the cabling process and cut costs. At the same time, PoE technology is applied in different devices, such as IP cameras, IP access points and voice over IP (VoIP) phones.

When PoE switch is connected with a PoE-Capable device, it can detect automatically the same devices that you have. Each of the spare wire pairs of PoE switch is treated as a single conductor and the electricity is injected onto the cable. And PoE switch can sometimes be transmitted on the data wires by applying a common-mode voltage to each pair. Because the twisted pair Ethernet cable uses differential signaling, the voltage doesn’t interfere with the data transmission.

             Figure 1: How Does Power over Ethernet Switch Work?

Common Power Over Ethernet Types

According to different ports, power over Ethernet switch can be grouped into three common types, they are 8-port, 24-port and 48-port power over Ethernet switches. Different types differ in switching capacity, price and other aspects. For example, different PoE switches have different switching capacities and prices in FS (Figure 2). Different types of PoE switches also have different applications.

              Figure 2: Comparison of Different PoE Switch in FS

Confusing Questions About Power Over Ethernet Switch

1. What are the differences between PoE switches and normal switches?

They differ in reliability, function, cost and manipulation. Compared with normal switches which only support data transmission, power over Ethernet switch can support data transmission and power supply. Devices connected with power over Ethernet switch don’t need to perform power supply wiring, which can save costs and simplify the whole network management.

2. What are the differences between PoE and PoE+?

Firstly, one difference between PoE and PoE+ is the actual Institute of Electrical and Electronics Engineers (IEEE) standards themselves. PoE is 802.3af, while PoE+ is 802.3at. The maximum capacity of PoE can reach 25.5 w, while the maximum capacity of PoE+ can reach 35.4 w. Secondly, the maximum support current of PoE is 350mA, while PoE+ is 600mA.

3. Can I use PoE ports for non PoE devices?

Yes, you can. All PoE switches have auto-sensing PoE ports, which means that the PoE port will detect if the connected device is a PoE device or not. But it is very important for you to check whether your PoE device supports 802.3af or 802.3at. Because non-standard PoE switches don’t have auto-sensing PoE ports, which is more likely to damage the network port.

4. Do all Ethernet cables support PoE?

Yes, nearly all Ethernet cables support PoE. PoE will work with existing cable, including Category 3, 5, 5e or 6.

Conclusion

It is without that power over Ethernet switches significantly improve the efficiency of network devices. After reading the whole passage, you may likely to have a general idea of PoE switches. FS provides different types of PoE switches for Ethernet PoE power supply and data communication. For more information, just reach us via [email protected].

Related Articles

24 Port PoE Switch Power Consumption: 400W vs 600W

Gigabit PoE Switch vs Normal Switch

[yourmellyguostuff-blog]

Fiber NIC Card: Definition, Types and Applications

Network interface cards, which are also called fiber NIC cards. Fiber NIC cards can provide fast and reliable network connections for users computers or network servers. And there are several common types of network interface cards in the market, such as fiber NIC card and wireless network card. This article will shed light on fiber NIC cards and their different applications.

What Is Fiber NIC Card?

Fiber NIC card is also called fiber LAN card or fiber server adapter. It is like a circuit board which is designed to allow computers or servers to communicate with a network. The fiber network card has a unique physical network address, also referred to as a MAC address. Fiber NIC card is usually a separate adapter card that can be inserted into one of the server’s motherboard expansion slots. The side plate of the fiber NIC is usually built with an interface like SFP, SFP+ or QSFP+ port. The card can translate computer data into electrical signals and the signals are compatible with the network., which is easy to exchange information. In the next part, some common types of fiber optic NIC cards will be elaborated in detail.

Common Fiber NIC Card Types Overview

Gigabit fiber network card, 10G fiber network card, 25G fiber NIC card and 40G fiber NIC card are common types of fiber NIC cards. Some basic information about them will be elaborated in the following part.

Gigabit Fiber Network Card

The gigabit Ethernet fiber network card, which is also known as the 1000Mbps optical network card. Usually, its maximum transmission speed can reach 1000Mbps and only provide a fixed transmission speed. According to different bus interfaces, gigabit fiber network card can be divided into PCI gigabit network card, PCI-X gigabit network card and PCI express gigabit network card. Based on different network interfaces, it can be grouped into RJ-45 gigabit fiber network card and SFP gigabit fiber NIC card.

10G Fiber Network Card

10G fiber network card uses a 32/64-bit PCI bus network interface card to establish a connection between the PC and the switch to solve the bottleneck problem of the server network card in the intranet mode. SFP+ single mode or multimode fibers and DAC/AOC cable can be used in 10G fiber network cards. The integrated communication control chip of 10G fiber network card relieves the pressure of CPU data processing. And 10G fiber NIC cards, especially 10Gbase-t NIC card, are frequently used in computers due to its relatively low transmission speed.

25G Fiber NIC Card

25G fiber NIC card typically operates at the physical or data link layer and has a unique physical address (MAC address). In addition, the 25G fiber NIC card has one or two SFP28 ports on the side panel, which is mainly used to connect the optical module to the switch. Common SFP28 optical module or the SFP28 high-speed cable (DAC) can be used in 25G fiber NIC card. The 25G fiber NIC card is mainly used for the connection between the servers and the switches.

40G Fiber NIC Card

40G fiber NIC card has a 40G QSFP+ interface that supports 40Gbps transmission bandwidth. It supports the PCI-e x8 standard slot to ensure efficient and stable operation. Usually, the 40G fiber NIC card also has single port and dual ports. And 40G fiber NIC cards in some companies have different functions. For example, 40 Gigabit Ethernet adapters in Intel can provide traffic separation (VMS) for virtual machines, state offload and use server and network virtualization. While 40 Gigabit Ethernet adapters in Mellanox are the highest performing interconnect solution for enterprise data centers, cloud computing, high-performance computing, and embedded environments.

Application of Fiber NIC Cards

Fiber NIC cards have two major applications. They can be applied to the connection between network servers, computers or storage and switches to realize 10G, 25G, 40G or up to 100G data transmissions. Here gives a specific application scenario of 10G fiber NIC cards. Just show as the below picture. The 10GBASE-T network card connects the ToR switch or EoR usage models via Cat6a/Cat7 UTP cables.

Conclusion

From what has mentioned above, you may likely to have a general idea about different fiber NIC cards. When you decide to choose different fiber NIC cards, it is very important for you to find the suitable ones based on your own needs. FS provides products such as 10G, 25G, 40G fiber NIC cards at competitive prices. If you need any help, feel free to contact us at [email protected].