Use 8 Port PoE Switch for IP Surveillance

With increasing privacy awareness and demand for security monitoring, IP surveillance has been widely used in the current society: in public supermarket, hotel, enterprise and even home. PoE network switch is used to provide both power and data connection to IP cameras in surveillance system. For small and medium-sized business or home application, 8 port PoE switch is a good choice.

8 port PoE switch for IP Surveillance

Figure 1: Using FS 8 port PoE switch for IP surveillance.

Why Use 8 Port PoE Switch for IP Surveillance?

Usually, 8 port PoE switch is used for supply power to powered devices (PD) for placing flexibility, including IP phones, IP phones and wireless access points (WAP). Some vendors like FS provide 8 port PoE switch with high resistance to electromagnetic interference and severe environment adaptability. This guarantee the smooth operation of weather-proof IP cameras and the stability of the whole IP surveillance system. Moreover, with all IP surveillance components centralized together with PoE switch, it is more convenient for management and control.

What Are the Considerations for Choosing 8 Port PoE Switch?

For an IP surveillance system with very few IP cameras, one can simply add a PoE injector (midspan) between the non-PoE Ethernet switch and IP cameras. This is a cost-effective solution for elementary IP surveillance system because an 8 port PoE switch is usually more expensive than a PoE injector. However, what about more than 4 IP connections are required? In this case, PoE switch 8 port is absolutely a better way to go. Here are some considerations one should refer to while selecting a proper 8 port PoE switch for IP surveillance.

·The Power Consumption of IP Camera

Knowing the power consumption of each IP camera helps to choose an 8 port PoE switch with corresponding per port power consumption and the total power budget. The power consumption of PoE IP cameras can reach up to 20W (PTZ IP cameras RLC-423), and be as low as 3 or 4W. Just remember that your 8 port PoE switch should be able to provide power for each IP camera and won’t exceed its total power budget.

·Max. Power Consumption of 8 Port PoE Switch

There are two PoE standards: IEEE802.3af and IEEE802.3at. IEEE802.3af PoE standard can deliver 15.4W maximum power on each port of the switch, and 12.95W power available at PDs. IEEE802.3at is a PoE+ standard with 30W per port and 25.5W available for transmission. Each PoE switch has power consumption specifications for per port and as a whole. For example, FS S1130-8T2F 8 port PoE switch complies with both IEEE802.3af and IEEE802.3at. Per port maximum power consumption is 30W and total budget of the PoE switch is 130W. For higher power budget, FS S1250-8T2F 8 port PoE switch can reach up to 250W. Make sure the maximum power supply of the whole switch is more than your IP cameras’ budget, or some of your IP cameras may won’t be provided with enough power. This is also the cause for poor performance and video loss.

·Managed or Unmanaged

Unmanaged 8 port PoE switch is a “dumb” plug-and-play one with fixed configuration, which runs in the most basic form with no management functionality. Managed one is an advanced version with superior functionality, configuration customization and remote security control. For heavy-workload networks with management requirement, managed 8 port PoE switch is obviously a future-proof way to go. It is noted that smart partly-managed PoE switch is a choice for functional and cost-efficient concerns. But for IP surveillance, choosing managed 8 port PoE switch is and will continue to be a future-proof solution.

There are other factors one may concern about, such as 1U form factor for space budget and stackable one for network expansion. Customized demand may be required for some special occasions. For instance, a fanless design is important for silent operation in libraries, classrooms and laboratories. FS S1130-8T2F 8 port PoE switch can meet the need. The best way is to list all those points you care about, then check each one for the targeted PoE switch.

How to Install 8 Port PoE Switch in IP Surveillance System?

An IP surveillance system comprises PoE switch, IP cameras, NVR and Ethernet cabling. To illustrate how to use PoE switch for IP surveillance, we’ll take FS S1130-8T2F 8 port PoE switch as example. This PoE+ switch has 8 x 10/100/1000Base-T RJ45 Ethernet ports and 2 x gigabit SFP ports, with IEEE 802.3af/at compatible, which means it supports 30W maximum power consumption.

To set up an 8 port PoE switch for IP surveillance, you can refer to the following tips. First connect all IP cameras and NVRs with RJ45 ports on PoE switch. Then connect LAN/WAN with SFP ports. It is noted that for non-PoE cameras, a splitter is required as a medium to connect PoE switch with IP camera. The following picture shows the detail information for installation.

FS 8 port PoE switch application

Figure 2: Installing FS S1130-8T2F 8 port PoE switch for IP Surveillance.

Conclusion

PoE switch provides placement flexibility, space and cost saving, and management convenience to IP surveillance system. For buying 8 port PoE switch, one should concern about power consumption of IP cameras and PoE switch, managed one for superior functionality and other customized requirements. Generally an 8 port PoE switch can satisfy a small sized IP surveillance system. For medium and bigger sized systems, FS also provides managed PoE switch with 24 and 48 port. Welcome to visit our official website for more detail information.

10Gb Switch Buying Guide

As the development of burgeoning network technology, gigabit network switch has become insufficient to meet the demand. In this circumstance, 10Gb switch, 40Gb switch and even 100Gb switch are designed to cater for current and future high capacity optical networks. Among them, 10GbE switch is the most popular one for both enterprise data center and carrier’s metro networks. This tutorial is a buying guide for 10Gb switch.

Overview of 10Gb Switch

Ever since 10 gigabit Ethernet has been defined by the IEEE 802.3ae standard in 2002, the ever-accelerated bandwidth intensive applications of 10G switches have been updating year by year. Typically 10gb network switch is used for interconnecting routers, servers in data centers to construct Spine-Leaf network. The reasons for boosting 10Gb switch deployments are never limited in the 10Gb speed providing. Moreover, 10GbE switch centralizes the pros of low latency, fewer bottlenecks, simple virtualized environment, spare bandwidth, rack space efficiency, low power consumption and expansion flexibility, etc.

FS 10Gb switch

Figure 1: FS S5850 & S5800 series 10Gb switches.

Concerns for Buying 10Gb Switch

When choosing  switch 10Gb, budget is always a big concern to obtain a cheap 10Gb switch. Generally speaking, more advanced 10GbE switches with managed or PoE features will be more expensive than the opposite one. Another factor first comes in our mind is number of port. For example, 12/24/32/48 port 10Gb network switches are all available at FS.COM. Table below shows the detail specification of FS S5800-48F4S 48 port SFP switch as an example for 10Gb switch.

Switching Class Layer2/3
Switching Capacity 176Gbps
Form Factor 1 RU
Latency 2.3us
Throughput 130.95Mpps
Max. Power Draw 75W
Hot-swappable Power Supplies 2 (1+1 redundancy)
Hot-swappable Fans 4 (N+1 redundancy)
CPU Cavium CN5010-500BG564-CP-G/500MHz

In addition to cost and port quantity, there are other factors to concern for buying 10Gb switch. Take a second for figuring out your network requirement and grasping the knowledge basis of 10GbE switch will save you budget and provide you superior buying experience.

·Managed Switch or Unmanaged Switch

Managed 10Gb switch is an advanced one for optimized network performance, which is best suitable for heavy-workload organizations requiring for traffic control, custom management and security monitoring. Unmanaged switch 10Gb is a configuration fixed plug-and-play switch. No customized management and control are supported for operators. Unmanaged switch 10Gb is best fit for anyone who just want to simply set up a network and let it run automatically. It is noted that smart partly-managed 10G switch is a compromise solution for both functional and cost-effective concerns.

·PoE Switch or Non-PoE Switch

PoE 10Gb switch deploys a single cable as medium for both data transmission and power supply to PDs, such as Wireless access points, IP cameras and VoIP phones. Breaking the tether of power outlet, it can be easily placed anywhere, on desktop, on a wall or mounted in a rack. But if power supply is not a question, you can just pick up non-PoE 10GbE switch, which will save your expense.

·Stackable Switch or Standalone Switch

Network upgrade and expansion are common in data centers, in this case, more switches are required for connecting the growing number of devices. When deploying standalone 10Gb switch, operators need to control each switch individually. Also, it is a complicated process to add new switch. Thus standalone 10Gb network switch is commonly used in small business networks. For larger enterprises, stackable 10G switch is dispensable to simplify the management and increase the availability of the network.

Ending

10GbE switch speeds your network up and provides high reliability and flexibility to your data centers. How to choose a cheap 10Gb switch? Try to take a second for making clear the following question: What is my budget limit? How is my network environment? How many ports are in need on the 10Gb switch? Is a managed switch 10Gb or PoE switch necessary? Should I deploy a stackable switch for future-proof concern? For buying gigabit switch, 10Gb network switch,  40Gb switch, or even 100G switch, FS is always a reliable vendor to go.

Related article: Recommendations for Cheap 48-Port 10Gb Switches

24 Port Switch Recommendation

Among all the port types of Ethernet switch, the 24 port gigabit switch plays a really important role in expanding both enterprise and home network. For enterprise network, deploying several 24 port switch versus 48 port switch not only saves you money, but also provides you backup switches in network outages and separate placing flexibility. As for home network, 24 port switch offers you more spare ports for upgrade and expansion even though currently you only has less than 16 drops. This article will recommend you four 24 port switches in terms of 24 port managed switch or 24 port unmanaged and 24 port PoE switch or non-PoE switch for various demands.

Managed 24 Port Switch Recommendation

·24 Port Non-PoE Switch: FS S3800-24T4S ($369)

FS S3800-24T4S gigabit stackable 24 port managed switch comes with 24 x 100/1000Base-T ports, 4 x 10GE SFP+ uplinks, 1 x console port and 2 x power supplies to allow dual power. If dual power is redundant, you can go for this mode’s single power version, which will save you 30 dollars. The switching capacity for a single S3800-24T4S 24 port switch is up to 128Gbps. Morever, the 4 SFP+ ports allow one to stack switch. Up to 4 S3800-24T4S switches can be stacked together as a whole. Thus proving up to 512 Gbps total switching capacity to your network and saving rackspace . This 24 port gigabit switch managed is designed to meet the demand of cost-effective gigabit access and 10Gb link aggregation for enterprise networks and operators. FS S3800-24T4S 24 port switch can be managed by both GUI command and web user interface, which is really user-friendly for concerns of interface as well as setting. For fiber switch 24 port, FS.COM is also a good way to go due to competitive 24 port switch price.

·24 Port PoE Switch: FS S1400-24T4F ($399)

FS S1400-24T4F 24 port gigabit managed PoE+ switch, 400W comes with 24 x 10/100/1000Base-T RJ45 Ethernet ports, 1 x console port, 2 x combo ports and 2 x gigabit SFP (mini-GBIC) slots. This Layer 2 switch, a fully managed 24 port PoE switch, features optimized intelligent function to improve key business application availability, sensitive data security and transmission efficiency. Besides, FS S1400-24T4F 24 port switch complies with PoE+ standard for higher power capacity than PoE standard. The 24 port PoE switch is best fit for SMB, entry-level enterprise and home network to power devices such as wireless APs, IP cameras and VoIP phones.

Unmanaged 24 Port Switch Recommendation

·Cisco Non-PoE Switch: SG112-24 ($149.95)

Cisco SG112-24 24 port unmanaged switch has 24 x 10/100/1000 ports and 2 x combo gigabit SFP ports. The 24 port gigabit switch is a fixed-configuration switch with auto-negotiation, auto-uplink and cable diagnostics function. For any SMBs who just need the network to run automatically, this non-PoE unmanaged 24 port switch will be a good choice. However, it is noted that for concerns of customized setting, security control and heavy load adaptability, you should avoid unmanaged switch and go for 24 port managed switch.

unmanaged 24 port switch

Figure 1: Cisco SG112-24 24 port unmanaged switch with 2 SFP ports.

·Cisco 24 Port PoE Switch: SG 110-24HP ($237)

Cisco SG 110-24HP unmanaged 24 port PoE gigabit switch comes with 12 x 10/100/1000Base ports, 12 x PoE ports and 2 x gigabit SFP ports. The Cisco 24 port PoE switch has a switching capacity of 48 Gbps and forwarding capacity of 35.7 mpps with 100W PoE power budget. The 12 PoE ports support various powered devices such as APs and IP phones. This 24 port switch is a natural fit for anyone who wants to save the configuration trouble and requires for PoE features.

unmanaged PoE 24 port switch

Figure 2: SG 110-24HP unmanaged Cisco 24 portPoE switch with 2 SFP ports.

Summary

This article is dedicated to recommend different types of 24 port gigabit switch for various demands, based on concerns of managed or unmanaged, PoE or non-PoE. It takes the 24 port managed switch from FS.COM and 24 port unmanaged switch from Cisco System as examples to offer reference for 24 port switch selection. Generally speaking, 24 port managed switch is more advanced than unmanaged switch. 24 port PoE switch has superior functionality to non-PoE 24 port gigabit switch. For most concerns of optimized performance and customization management, just go for FS managed 24 port switch, which is cost-effective with both 24 port PoE switch and 24 port non-PoE switch available. Fiber switch 24 port is not mentioned in the recommendation due to cost-saving concern, but if required S3800-24F4S fiber switch 24 port with decent price would be a good choice.

Related article: Recommendations for 48 Port Switches

Buy 24 port PoE switch: Managed PoE Switch vs Unmanaged PoE Switch

With the increasing popularity of PoE switch, the issue of network switch selection has aroused heated discussion in forums. For the question – should I buy managed vs unmanaged PoE switch 24 port? It seems that people one-sided speak for the 24 port PoE managed switch. However, this post is dedicated to dig the edges of 24 port PoE switch unmanaged and 24 port managed PoE switch for buying best PoE switch.

24 port PoE Switch Unmanaged over Managed PoE Switch Optimal Situation

24 port PoE switch unmanaged is somehow a low-grade switch compared to 24 port managed PoE switch in the current market. It is a plug-and-play network switch with configuration set up by OEM (original equipment manufacturer), which let your network run in the most basic form. Though not allowing customization, 24 port PoE gigabit switch spares green hands the trouble to configure and manage the unmanaged 24 port PoE gigabit switch. Therefore, 24 port unmanaged PoE switch is suitable for any business networks requiring for simplified management. Also, 24 port unmanaged switch can best satisfy the demand for home and small office usage for desktop powered devices (PDs).

Managed PoE Switch 24 Port over 24 port PoE Switch Unmanaged Optimal Situation

Compared to 24 port PoE switch unmanaged, 24 port managed PoE switch is an optimized version in terms of advanced administrative control and security management. In another way, 24 port PoE managed switch can be called a user-defined switch counting you to take in charge of the whole. Before operation, this kind box needs you to configure everything up. During the process of running, managed 24 port PoE gigabit switch allows you to implement control over traffic, management, surveillance and replacement. For example, you can program each port individually and disable those unused ports for power saving and network intrusion forbidden. It is exactly the control feature that secure your network. By monitor, once found you can easily prohibit those unauthorized users, which can largely protect sensitive internal data. Next, managed PoE switch 24 port provides you with failover and redundancy, which maintains network stability due to less downtime. Besides, 24 port PoE managed switch has built-in Spanning Tree Protocol (STP), which offers backup paths to prevent from endless looping in the case of some devices’ failure. Moreover, some 24 port managed PoE switches is equipped with SFP slots. For instance, FS.COM S1400-24T4F managed 24 port PoE switch gives you 4 SFP ports to allow network expansion with flexibility.

S1400-24T4F managed 24 port PoE switch

 S1400-24T4F 24 port PoE+ managed switch, 4 SFP, 400W by FS.

·24 Port PoE Switch: Managed vs Unmanaged vs Smart Switch

For 24 port managed PoE switches option, it is noted that there are two versions of 24 port PoE switch available in the market: smart PoE switch and fully managed PoE switch. Generally speaking, fully managed switch is targeted at providing optimal network performance and reliability, especially in large and complex data centers. 24 port smart switch over 24 port unmanaged switch is slightly managed to cater for smaller size network and cost saving demand, which is best fit for home and office usage.

Buy 24 Port PoE Switch: Unmanaged vs Managed PoE Switch Selection Guide

After explaining each one respectively, we can come to the following conclusion. 24 port managed PoE switch is designed for optimized network performance, which is best suitable for organizations with heavy workloads, high traffic and requiring for custom management and troubleshoot remotely and securely. 24 port PoE switch unmanaged is best fit for anyone who just want to simply set up a network and let it run automatically or starters to get rid of the configuration trouble. Thus it is commonly used in home and small offices. Simply put, the managed 24 port PoE switch is for advanced users whereas the unmanged 24 port PoE switch is specially for beginners

managed or unmanaged 24 port PoE switch

Conclusion

Buy 24 port PoE switch, should I buy managed PoE switch 24 port or 24 port PoE switch unmanaged? Or should I take smart PoE switch? Don’t indiscreetly make decisions. Before asking this question, figure out the exact network environment and the degree you want to take control of your network. Because each solution has its edges over the other and respective optimal situation for usage.

Related article: 48 Port PoE Switch Managed vs Unmanaged

FS 24 Port PoE Switch – Cheap PoE Switch Solution

PoE switch is becoming more and more popular with the ever increasing demand for high capacity and flexibility in various applications. Power over Ethernet switch is available with PoE switch 8 port, 16 port, 24 port and 48 port. Among them, PoE switch 24 port is the most popular and economic one in the market. So today we’ll focus on the part of 24 port PoE switch.

What Are the Options for FS 24 Port PoE Switch?

Power over Ethernet (PoE) is a technology that lets Ethernet cables carry electrical power in the process of data transmission. PoE switch is a power sourcing equipment (PSE) that has Power over Ethernet setting built-in to provide centralized function of data transmission and power supply for network terminals over one single cable simultaneously. FS 24 port PoE switch is designed with 24×10/100/1000Base-T RJ45 Ethernet ports, 2×combo port, 1×console port and 2 Gigabit SFP slots.

24 port PoE switch

Figure 1: This photo shows the front panel of 24 port PoE gigabit switch by FS.

FS recommends two managed gigabit 24 port PoE+ switch to provide high-quality and efficient networks: S1400-24T4F 24 port PoE switch and S1600-24T4F 24 port PoE managed switch.

Table below shows product details of S1400-24T4F and S1600-24T4F 24 PoE switch

P/N S1400-24T4F S1600-24T4F
Rate Level 1G switch 1G switch
Switching Capacity 52Gbps 52Gbps
Max. Power Consumption 400W 600W
Gigabit RJ45 Ports 24 24
SFP Ports 4 4
SFP+ Ports N/A N/A

There is no much distinction between the two versions of FS 24 port PoE+ managed Ethernet switch except the power capacity. One is 400W whereas the other is 600W. The suggestion is that if you need to power more devices, S1600-24T4F 24 port PoE switch would be a better choice.

What Are the Applications of 24 Port PoE Switch?

FS 24 port PoE switch provides the benefits of security, management efficiency and superior performance, which makes the 24 port PoE managed switch a natural fit for SME (small and medium enterprise) and start-up business solution. Such PoE switch 24 port is commonly applied to three powered devices (PD): VoIP phones, IP camera and wireless access points (AP).

24 port PoE switch application

Figure 2: This photo illustrates the application of FS S1600-24T4F 24 port PoE switch for IP phones and desktops.

What Are the Advantages of 24 Port PoE Switch?

Cost and Time Efficiency

FS S1400-24T4F 24 port PoE gigabit switch and S1600-24T4F 24 PoE switch is free from electrical power cable, which reduces the extra time and expense for installation.

Flexibility

24 port PoE switc breaks the tether of local electrical wiring, thus can be placed in any place they are needed, in a rack, on a wall or on desktop. The Auto-MDI/MDIX also makes 24 port gigabit PoE switch backward compatible with traditional network devices.

Reliability

Different from traditional distributed wall sockets, FS 24 port PoE switch is specified by worldwide PoE standards, both IEEE 802.3af and IEEE 802.3at. PoE switch 24 port can safely supply other PoE compatible devices such as Cisco IP phones.

High Capacity

FS 24 port PoE switch has 24 ports, which means you can connect up to 24 power-hungry PDs to network at the same time.

Conclusion

FS 24 port PoE switch is best fit for SMEs and start-up companies which require for VoIP phones, IP camera and wireless APs. 24 PoE switch not only upgrades your network to a higher-capacity system, but also centralizes the cabling function for power supply and data transmission. FS 24 port PoE switch price is highly cost-effective with equal performance with other brand-name PoE switches like cisco 24 port PoE switch. For cheap PoE switch 8 port, PoE switch 24 port and 48 port PoE switch, FS.COM will be a good way to go. So why not set up PoE to upgrade you network right now?

Single Mode Fiber Type: G652 vs G655 Fiber

With the increasing demand for greater capacity over long distance transmission, single mode fiber optic cable is designed with various versions. There are 6 different categories of SMFs: G652, G653, G654, G655, G656 and G657, among which G652 and G655 are two options frequently used in WDM. So G652 vs G655 fiber: what’s the difference?

Single Mode Fiber: What Is G652?

G652 is currently the most popularly adopted single mode fiber, for which G652 is defined as Standard SMF. It has G652A, B, C and D four versions. G652A and B have a zero dispersion wavelength point at 1310 nm, which makes it a natural fit for operation in the 1310 nm band. However, they are not suitable for applications in Wavelength Division Multiplexing (WDM) due to water peak. The more advanced C and D are optimized with elimination of water peak for spectrum operation, which makes them effective at wavelength between 1310 to 1550 nm to support Coarse Wavelength Division Multiplexing (CWDM). Comparing G652C, G652D single mode fiber has superior PDM (polarization mode dispersion) parameter, for which G652D is known as Standard single mode fiber (SSMF) and commonly used to support 10GbE and 40GbE system. FS. COM provides such G652D LC fiber in various versions.

FS.COM G652D LC single mode fiber single mode fiber

Figure 1: This photo shows a FS.COM G652D LC single mode fiber.

Single Mode Fiber: What Is G655?

G655 is known as nonzero dispersion-shifted fiber (NZDSF), because the dispersion at the wavelength of 1550 nm is close to zero but not zero. It is further divided into A, B and C three subcategories. There are two types of NZDSF: (+D)NZDSF and (-D)NZDSF, the dispersion of which is respectively proportional and inversely proportional to wavelength. Among them, the positive dispersion of G655 overcomes nonlinear effects in WDM system such as four wave mixing (FWM) due to high effective area. G655 is specified at 1550 nm and 1620 nm, and has low value of chromatic dispersion in the c-band (1530 -1660 nm), in which Erbium Doped Fiber Amplifier (EDFA) boost the optical signals. This match gives G655 an edge over G652. G655 fiber is suitable for DWDM system to meet increasing transmission capacity and long haul high capacity WDM transmission system.

Difference of G652 vs G655 single mode fiber

Figure 2: This diagram shows the difference of G652 vs G655.

G652 vs G655 Single Mode Fiber: What’s the Difference?

Table below shows the detail information of G652 vs G655 fiber.

Fiber Type G652 G655
Alternative Name Standard SMF/zero dispersion-shifted fiber (non dispersion-shifted fiber) Nonzero dispersion-shifted fiber (NZDSF)
Specified Wavelength 1310, 1550, 1625 nm (C and D excluded) 1550-1625 nm
Dispersion Point 1310 nm 1550 nm
Dispersion Value Higher Low
Attenuation Parameter Less than 0.4 dB/km Typically 0.2 dB/km at 1550 nm
PMD Parameter Less than 0.5 over C and 0.2 over D Less than 0.1 ps/sqrt (km)
Applications LAN, MAN, access networks and CWDM transmission Long-haul systems that use DWDM transmission
Price Lower than G655 High
Features Reduced water peak Low dispersion value; overcoming nonlinear effect

As shown in the table, G652 and G655 fiber are two single mode fiber types defined with different specifications of wavelength, dispersion, parameter of attenuation and PMD. G652 is featured a zero dispersion wavelength at 1310 and reduced water peak to support CWDM. G655 is an enhanced single mode fiber with the characteristic of elimination of FWM and low dispersion value, typically applied to long and high-speed DWDM transmission. For consideration of both the function and price, G652 especially G652D version has become the most commonly used one.

Conclusion

This article introduced two categories of single mode fiber types and made a contrast between G652 vs G655. It’s not proper to say one type beats the other since both have their characteristics for different applications. For transmission not requiring very high rate and long distance, G652. D can be the choice. But for much higher capacity and long distance required DWDM system, G655 will best meet the needs regardless of much higher cost.

Ethernet Cable vs Network Cable: What’s the Difference?

With the ever-increasing popularization of network applications in our daily life, people frequently hear words like “Ethernet cable” and “network cable”. We can easily get confused by these terms and questions like Ethernet cable vs network cable: What’s the difference? Whoever you are as long as you are network users, you need the basic knowledge to figure one from the other.

What Is Ethernet Cable?

Ethernet cable is a concept of cabling network wire that specified to be used in LAN (local area network), MAN (metropolitan area network) and WAN (wide area network). In actual application, cables that installed in Ethernet to connect with devices like switches, routers and PCs and used as a common network medium for data transmission and power supply (Power over Ethernet, PoE) are called Ethernet cables. They are of great concern while setting up wired networks, for both bad cabling and low-quality cable leading to low network performance.

Ethernet cable

Figure 1: This photo shows the installation of Ethernet cable in network center.

What Is Network Cable?

Network cable is a wide concept of all types of cables used in various network. It is used to connect and transmit data between a network and computers. There are a variety of network cables in the market, and different network cables are required for different network conditions. Ethernet crossover, twisted pair, coaxial and fiber optic are four of the most frequently used network cables.

Ethernet Cable vs Network Cable: What’s the Difference?

·Range Involved

Ethernet cable is a branch of network cable. Only network cables that used in Ethernet environments (LAN, MAN, WAN) are called Ethernet cable. Ethernet cable usually exclusively refers to a copper or aluminium cable. However, network cable refers to a large range of cable types such as patch cable and glass optical fiber. In fact, any cables that applied to networks are network cables.

·Classification

Modern Ethernet usually operates on twisted pair cables with 8P8C modular RJ45 connectors. An unshield one – UTP is the most identified type and thus be called as Ethernet cable. Ethernet cable is also commonly classified by standard categories. For example, Cat5e cable and Cat6 cable are two most popular used Ethernet cables in the current market. Other updated Ethernet cables are Cat6a, Cat7a for higher performance. All above specially mentioned as Ethernet cables are also network cables. However, modern technology has developed Ethernet, allowing it to run on coaxial and fiber optics cables, which is beyond the early Ethernet technology. This evolution makes the concept of Ethernet cable and network cable more close to each other.

Cat5e vs Cat6

Figure 2: This photo shows the most popular used Cat5e and Cat6 cables.

·Application

Opposite to WLAN (WiFi, wireless local area network), Ethernet is a wired LAN access technology. Any cable attached to this access of network is called specially as “Ethernet cable” and generally as “network cable”. As for network, it defines both wired network and WLAN. As we know, WiFi has become more and more popular in the modern world. Will there be a special “wireless network cable” in the future to replace standard cable? Maybe change in structure and function is foreseeable, but the need for a wire to connect the server with hub is always dispensable.

Conclusion

This article explained the concept of Ethernet cable vs network cable and made a contrast of them. Ethernet cable belongs to the category of network cable. Ethernet cable is exclusively pointed to Ethernet environment, while network cable is a general concept of all cable types used in different network conditions.

C13 vs C15 Power Cord: What’s the Difference?

Throughout the world, power cord is widely used in our daily life, data centers and other professional fields. There are various power cords equipped with different types of connectors in different countries, from type A to type N. Among all these types, C13 and C15 power cords are two most commonly used plug type C power cords. People may easily get confused by C13 vs C15 power cord. What’s the difference between them? The answer is here.

What Is Power Cord?

C13 and C15 power cords are two types of power cords defined by different connectors. So before we touch the question, let’s understand the concept of power cord. Power cord is an electrical flexible cord with connectors at each end. One is a male plug and the other is a female receptacle. In actual application, the male inlet is attached to a power supply such as PDU power strips while the female connector attached to an electrical appliance or equipment. IEC (International Electrotechnical Commission) uses odd numbers to stand for female outlets, and 1 bigger even numbers to stand for the matching male inlets. Each power cord has been standardized by IEC before introduced in the market. Different types of connectors are specified for different combination of rated current, voltage and temperature.

power cordThis figure is a display of power cord application.

What Is C13 Power Cord?

C13 power cord consists of a supple cable, a female C13 connector at one end and a male C14 appliance inlet at the other end. In this way, the combined unit of C13 power cord is shown as C13 to C14. C13 power cord is called as “kettle cord” in our life, however, the rated temperature of C13 is 70℃, not high enough to support a electric kettle. C13 is commonly used in PCs, printers, monitors and instrument amplifiers.

What Is C15 Power Cord?

At the first sight of C15 power cords, one can see nothing different from C13 but a notch opposite the earth. This slight difference is designed for figuring C15 from C13, forbidding misuse of different rated temperature connectors. C15 power cord is matched with C16 appliance inlet, shown as C15 to C16. It is noted that C15 connector also fits into C14 inlets while C13 cannot fit into C16 inlets. Because higher rated voltage power cord can be used in lower voltage equipment, not vice versa. C15 is designed for high temperature conditions with a rated voltage up to 120℃. For instance, it can be used for devices like electric kettles and computing networking closets.

C13 vs C15 Power Cord: What’s the Difference?

The following table shows a comparison between C13 vs C15 power cord.

Connector Type C13 C15
Ground Post Yes Yes
Rated Current/Voltage 10A/250V 10A/250V
Shape Characteristic No notch

C13 connector

A notch opposite the earth

a notch on C15 connector

Appliance Inlet Type C14 C16
Temperature Rating 70℃ 120℃
Applications PCs, printers, monitors, instrument amplifiers to fixed-configuration switches. Electric kettles, computing networking closets, sever rooms, PoE switches with high wattage power equipment.

As the table shown, C13 and C15 both are 3-hole power cords with earth touch, and defined with same rated current and voltage. However, they have distinct features in shape characteristic, appliance inlet type, temperature rating and applications. C15 is a better choice in high temperature surroundings.

Conclusion

This article introduced the concept of power cord, C13 and C15, then focused on one question-C13 vs C15 power cord: What’s the difference? It made a contrast from four aspects: shape characteristic, appliance inlet type, temperature rating and applications. At last a conclusion is made that C13 and C15 are totally different power cords. Comparing with C13, C15 is a natural fit for high temperature application, so next time you need a power cord applied to high temperature condition, take C15 rather than C13.

Fiber Connector Type: SC APC vs SC UPC

With the rapid development of fiber networks, fiber connectors have become an essential assembly to cater for high-performance fiber optic system. There are various fiber connector types in the market, such as LC, ST, SC, MPO/MTP and so on, among which, SC is one of the most commonly used fiber connectors. Further Classifying SC by polishing type, we have SC APC connector and SC UPC connector. This article will introduce SC APC vs SC UPC and illustrate their difference for your selection guide.

SC APC vs SC UPC: What Refers to SC?

SC is the abbreviation of Subscriber Connector, sometimes also refers to Square Connector or Standard Connector. SC is a type of fiber optic connector with snap (push-pull coupling) coupling type and a 2.5 mm diameter ferrule, which is popularly used in single mode duplex system for its high performance and accurate alignment.

SC APC vs SC UPC: What Refers to APC and UPC?

Generally speaking, SC APC connector and SC UPC connector are distinct from each other based on fiber end face. SC APC connector is polished with an 8-degree angle, while SC UPC connector is polished with no angle, which causes difference in light reflection. SC UPC connector adopts an extended polish method to realize finer fiber surface finish, which brings much lower back reflection (ORL) and thus provides much more reliable signal in data center, digital TV and telephone. Although SC UPC connector has low insertion loss and wide range of application, there are some applications requiring for higher return loss, no less than 60 dB or even higher. In this circumstance, SC APC connector can make the need and consistently perform well due to the 8-degree angle.

SC APC

Figure 1: This photo shows a SC APC connector.

SC APC vs SC UPC: What Are the Differences?

As mentioned above, we know SC APC and SC UPC varies from polishing style, which is a difference in the manufacturing process. But in the actual usage, what are the distinct features of SC APC and SC UPC connectors and how to choose from them? Here are some clues.

·Return Loss Value

With a SC UPC connector installed on the end of a fiber, reflected light is reflected straight back to the light source. However, with a SC APC connector, reflected light is reflected at an angle into the outer cladding layer rather than straight back towards the light source. This different way of reflection of reflected lights brings about different return loss value. SC APC connector is standardized with a return loss value as -60dB or higher, while SC UPC connector as -50dB or higher.

·Insertion Loss Value

Another specification to consider about fiber connector is insertion loss. Lower the insertion loss, better the performance. Someone prefer SC UPC connector, because they hold the view that SC UPC connector is easier to realize low insertion. This is true on account of less air gaps in SC UPC connector than SC APC connector. However, modern technique has made insertion loss value of SC APC connector as low as SC UPC connector.

·Applications

SC APC connector is commonly used in applications that are much more sensitive to return loss, and requires for high precision signal, such as FTTX (Fiber To The X), video delivery through RF signal, WDM (wavelength division multiplexing) applications and analogue equipment like CCTV. For applications less sensitive to return loss and no other particular demands are required, a SC UPC connector can work as equal effectively as a SC APC connector.

SC UPC

Figure 2: This photo shows a SC UPC connector.

·Other Reference

While SC APC connector is green, SC UPC connector is blue. Besides, the first is much more expensive than the latter one for the optical performance of SC APC much better than SC UPC connector. Other factors to think is the ease of use and your personal needs.

Conclusion

This article touches the concept of several items: SC, APC connector and UPC connector. Then it explains why SC APC connector is distinct from SC UPC connector from several aspects. It is improper to say one SC connector type wins the other for there are lots of consideration under specific circumstances. Simply put, people choose from these two SC connectors according to their personal need. Taking the factors of optical performance, cost and application in usage into consideration, one can make the best choice.

SFP LC SX Vs. LX Transceiver

1000BASE SFP transceivers have been widely used in 1G Ethernet, telecommunication and other applications. They provide a full range of 1000BASE SFP transceivers types to meet the different requirement for varied transmission distance based on singlemode or multimode fiber. They can be interfaced with different connectors, such as LC, SC, ST, FC, etc. 1000BASE-SX SFP and 1000BASE-LX SFP transceivers are two different types of 1000BASE SFP LC transceivers. Knowledge of difference between SFP LC SX and SFP LC LX transceiver would be covered.

SFP LC

What’s SFP LC transceiver?

LC SFP transceiver means 1000BASE SFP transceiver with LC connectors, which includes 1000BASE-SX SFP, 1000BASE-MX SFP, 1000BASE-LX SFP, 1000BASE-EX SFP, 1000BASE-ZX SFP, 1000BASE-EZX SFP, 1000BASE-BX SFP and CWDM/DWDM SFP transceiver modules. Different protocols have varied requirement for transmission medium, operation temperature, supporting DOM or not, and etc. 1000BASE-SX SFP is designed for transmission within near area, while LC SFP LX transceiver for long-haul transmission.

SFP LC Vs. SC

The main difference between SFP LC and SFP SC transceiver lies in connectors. LC and SC are two different connectors, and they are different in size, handing and history of connector. LC is half size of SC. And SC is a true “push-pull-connector” and LC is a “latched connector”, although there are very innovative, real “push-pull-LCs” available which have the same handling capabilities like SC. Moreover, the LC is the “younger” connector of the two, SC is wider spread around the world but LC is catching up. SC is generally used with GBIC, LC is used with SFP transceiver.

SFP LC SX Vs. LX Transceiver

SFP LC SX transceiver

1000BASE-SX LC SFP transceiver is a fiber optic Gigabit Ethernet standard transceiver for operation over multi-mode fiber using a 770 to 860 nanometer. It works at 850nm wavelength and used only for the purposed of the multimode optical fiber with an LC connector. The link lengths of 1000BASE-SX SFP can be up to 500m with 50 microns multimode optical fiber and it can achieve 220m with 62.5 micron multimode optical fiber. This SFP LC module is highly favored by intra-building links in large office buildings, co-location facilities and carrier neutral internet exchanges.

SFP LC LX transceiver

SFP  Ethernet networks. LC SFP LX transceiver uses with long-wavelength transmissions (1270-1355nm) over long cable runs of fiber optic cabling. This LC SFP module can run over both singlemode fiber and multimode fiber with a distance of up to 5km and 550m, respectively. And the SFP LC port can be connected by fiber patch cable with LC connector. 1000BASE-LX LC SFP transceiver mainly deployed for connecting high-speed hubs, Ethernet switches, and routers together in different wiring closets or buildings using long cabling runs, and developed to support longer-length multimode building fiber backbones and single-mode campus backbones.

What’s the Difference?

1000BASE-SX SFP LC transceiver is for multimode fiber cables for less than 550 meters. The LC SFP LX transceiver is for singlemode fiber cables up to 10km, and it also supports the multimode. 1000BASE-SX LC SFP transceiver standard was developed to support lower cost multimode fiber runs in horizontal and shorter-length backbone applications. The LC SFP LX transceiver standard was developed to support longer-length multimode building fiber backbones and singlemode campus backbones. LC SFP LX transceiver costs more than 1000BASE-SX SFP LC transceiver.

Conclusion

Both 1000BASE-SX LC SFP transceiver and LC SFP LX transceiver are 1000BASE SFP transceivers with LC connector, but they are designed to support different transmission lengths. You can select a proper one according to your actual requirement. For cheap SFP LC transceivers with high quality, FS.COM is a wise choice. By the way, they provide customizing service, you can customize the module model of compatible major brands you want there.

Related Article: Why Not Use Third-party Dell SFP Transceivers for Your Dell Switches?
A Quick Overview of Cisco GLC-LH-SM SFP Module

8 Port PoE Switch Selection Guide And Tips

POE(Power over Ethernet) is ideal for using in smart applications which makes CCTV even more effective and easier to manage. The network can be monitored, controlled, and managed from a smartphone or tablet. With a POE switch such as the Netgear ProSAFE 8 port switch, remote IP surveillance cameras can be controlled and managed no matter where they are located. Facing the selection of 8 port PoE switch, most of people would occur allodoxaphobia. For fixing this hard-decision problem, this article would put emphasis on 8 port PoE switch selection guide and tips.

8 Port PoE switch-FS.COM

Overview on 8 Port PoE switch

There is a variety of 8 port PoE switches with different brands. Today, we would take FS.COM 8 port switch as an example to introduce 8 port PoE switches. FS.COM S1130-8T2F managed PoE+ switch comes with 8x 10/100/1000Base-T RJ45 Ethernet ports, 1x console port, and 2x gigabit SFP slots. It can supply power to network equipment such as weather-proof IP cameras with windshield wiper and heater, high-performance AP and IP telephone. This managed PoE+ switch are highly flexible, the transmission distance of the SFP fiber port can be up to 120km, and with high resistance to electromagnetic interference. It also features superior performance in stability, environmental adaptability. FS.COM PoE+ Gigabit switch comes with a one-year limited warranty, including any quality problems during the free maintenance. The detailed specification of FS.COM S1130-8T2F managed PoE+ 8 port switch is shown in the below.

Switch Class Layer2+
Switch Chip VITESSE
Fans Fanless Design
Jumbo frames Up to 9KB
Power Consumption Per PoE Port Max. 30W
Max. Power Consumption 130W
Power Supply Input 100-240VAC, 50-60Hz
Switching Capacity 20Gbps
Forwarding Rate 14.88Mpps
Packet Buffer Memory 4M
PoE Standard Compliant with IEEE802.3af/at
VLANs Up to 4K
Web Management Interface Supported
Power Pin Type End-span

8 Port PoE switch Selection Guide & Tips

—Power Requirements

Review the data sheets of the camera’s you have specified on the installation to see if any have higher power requires known as PoE+. If you have 1 or more camera’s requiring PoE+ power you will need to heavily consider this when choosing your switch. (Please note PoE+ switches will happily power standard PoE devices but a standard PoE switch cannot power any PoE+ device, regardless of the amount of wattage unused by the other connected equipment). However some switches are designed to power both PoE and PoE+ devices, please check the specification sheet of that exact switch model to see if this is possible on your selection. If this is the case you will usually find a the switch will handle half the PoE+ devices it will PoE e.g. An 8 port switch can power 8 standard PoE devices or 4 PoE+ devices.

—Cable Run Length

Make sure when planning your network you do not have cable runs longer than 90 meters. This is particularly important when using PoE due to voltage drop. PoE is particularly hard to measure voltage on so if you break the 90 meter cable rule you could be in for a world of pain if devices do not operate correctly.

—8 Port Switch Price

There are many 8 port PoE switches of major brands on the market, such as Cisco, Netgear, HP, TP-Link and etc. The 8 port switch price varies in difference brands. But they all controlled in a certain range, it’s around $40~$300. For brand selection of 8 port PoE switch, that depends on your preference. You can check the price discrepancy with major brands in the following table. Notice: All the following prices except FS.COM are from Amazon.

Brand Model Price
Cisco SF302-08P 8-Port PoE Manged Switch $153.11
NETGEAR GS108PEv3 8-Port PoE Managed Switch $79.99
FS.COM S1130-8T2F 8-Port PoE managed switch $159.00
HP 2530-8-POE+ Ethernet Switch $270.00

Conclusion

This article mainly introduce FS.COM S1130-8T2F 8 port PoE switch and provide 8 port switch selection guide and tips. How to choose a reliable supplier from so many 8 port switch manufacturers? Before buying 8 port PoE switch, the quality, power requirement, price, cable run length should be considered. As one of well-known 3rd-party optics manufacturers, FS.COM is suggested to be a good choice for 8 port PoE switch.

Cisco SFP Datasheet

As a world renowned enterprise in communication and information technology industry, Cisco’s networking products have been gained worldwide reputation among these years. Fiber optical transceiver is a networking technology used within buildings in local-area networks and across great distances in wide-area networks. 1000BASE SFP modules with various protocols offer optimized 1G Ethernet connectivity for diverse networking environments. Cisco SFP modules include 1000BASE-T SFP, 1000BASE-SX SFP, 1000BASE-LX/LH SFP, 1000BASE-EX SFP, etc. This passage would put emphasis on Cisco SFP modules and comprehensively present the Cisco SFP datasheet.

Overview on Cisco 1000BASE SFP Modules

Cisco’s industry-standard SFP is a hot-swappable input/output device that plugs into a Gigabit Ethernet port/slot, linking the port with the fiber optic network. SFPs can be used and interchanged on a wide variety of Cisco products and can be intermixed in combinations of IEEE 802.3z- compliant 1000BaseSX, 1000BaseLX/LH, or 1000BaseZX interfaces on a port-by-port basis. All of the Cisco 1000BASE SFP modules were certified and tested for superior performance, quality, and reliability. So the customers could rest assured to plug these hot-swappable input or output device into the 1 Gigabit Ethernet ports.

Cisco SFP 1G

Nowadays, they have been widely applied to data center, high-performance computing networks, enterprise core and distribution layers, and service provider applications. Basically, there are totally 12 form factors of Cisco 1000BASE SFP modules. Owing to time and space limitation, we would briefly introduce Cisco 1000BASE-SX SFP, Cisco 1000BASE-LX/LH SFP, Cisco 1000BASE-EX SFP, and Cisco 1000BASE-ZX SFP.

Cisco 1000BASE-SX SFP Datasheet

The Cisco 1000BASE-SX SFP is fully compatible with the IEEE 802.3z 1000BASE-SX standard. It operates on legacy 50 μm multimode fiber links up to 550 m and on 62.5 μm Fiber Distributed Data Interface (FDDI)-grade multimode fibers up to 220 m. This Cisco 1000BASE-SX SFP module can support up to 1 km over laser-optimized 50 μm multimode fiber cable. This Cisco multimode SFP module can be used to connect the 1000BASE SFP port on Cisco switch. The Cisco 1000BASE-SX SFP datasheet is shown as below:

Form Type SFP-GE-S-2
Max Data Rate 1000Mbps
Wavelength 1310nm
Max Transmission Distance 2km
Interface LC duplex
Fiber Type MMF
DOM Support Yes
TX Power -9.5~-3dBm
Receiver Sensitivity < -17dBm
Operating Temperature 0 to 70°C (32 to 158°F)

Cisco 1000BASE-LX/LH SFP Datasheet

The Cisco 1000BASE-LX/LH SFP is compatible with the IEEE 802.3z 1000BASE-LX standard. It operates on standard single-mode fiber-optic link spans of up to 10 km and up to 550 m on any multimode fibers. When used over legacy multimode fiber type, the transmitter should be coupled through a mode conditioning patch cable. This Cisco singlemode SFP datasheet is shown as below:

Form Type GLC-LH-SM
Max Data Rate 1000Mbps
Wavelength 1310nm
Max Transmission Distance 10km
Interface LC duplex
Fiber Type SMF
DOM Support Yes
TX Power -9.5~-3dBm
Receiver Sensitivity < -23dBm
Operating Temperature 0 to 70°C (32 to 158°F)

Cisco 1000BASE-EX SFP Datasheet

The Cisco 1000BASE-EX SFP operates on standard singlemode fiber optic link spans of up to 40 km in length. A 5-dB inline optical attenuator should be inserted between the fiber-optic cable and the receiving port on the SFP at each end of the link for back-to-back connectivity. Like the last one, the Cisco 1000BASE-EX is also a Cisco singlemode SFP module, the detailed datasheet is shown in the following table.

Form Type GLC-EX-SMD
Max Data Rate 1000Mbps
Wavelength 1310nm
Max Transmission Distance 40km
Interface LC duplex
Fiber Type SMF
DOM Support Yes
TX Power -5~0dBm
Receiver Sensitivity < -24dBm
Operating Temperature 0 to 70°C (32 to 158°F)

Cisco 1000BASE-ZX SFP Datasheet

The Cisco 1000BASE-ZX SFP module operates on standard singlemode fiber optic link spans of up to approximately 70 km in length. The SFP provides an optical link budget of 21 dB, but the precise link span length depends on multiple factors such as fiber quality, number of splices, and connectors. This Cisco singlemode SFP datasheet is shown in the following table.

Form Type GLC-ZX-SM
Max Data Rate 1000Mbps
Wavelength 1310nm
Max Transmission Distance 80km
Interface LC duplex
Fiber Type SMF
DOM Support Yes
TX Power -2~3dBm
Receiver Sensitivity < -24dBm
Operating Temperature 0 to 70°C (32 to 158°F)

Conclusion

1000BASE SFP transceiver is the most commonly used component for Gigabit Ethernet application. And Cisco SFP modules account for a large share on Gigabit Ethernet optics’ market, which are paramount for data centers, enterprises and etc. With so many types available in the market, careful notice should be given to the range of differences, both in distance and price of Cisco multimode SFP and Cisco singlemode SFP module. FS.COM will be a good choice with good compatibility, support offerings and great reputation.

48 Port PoE Switch: Cisco Vs HP Vs FS.COM

To meet the growing requirement of an improved enterprise network management, 48 port PoE switch provides optimized solution for network efficiency, operational cost savings, and ease of management. Cisco always plays a leading role in fiber optical communication while HP switches are renowned for competitive price, quality and service. FS.COM is seen as the rising third-party fiber optics’ vendor. It has gained well reputation for their fiber optical transceiver, fiber jumpers, etc. Today, we would touch the basic introduction of the 48 port PoE switch supplied by these three vendors, analyze the difference, and provide a selection guide.

Cisco 48 Port PoE switch

For Cisco 48 port PoE switch, there are many such switches having been launched, such as SG 500X-48P(170/volume per month), SG2010P(210/volume per month), etc. The Cisco SG2010P 48 port poe switch has 48 RJ-45 connectors for 10BASE-T/100BASE-TX/1000BASE-T with 4 Gigabit combo ports shared between mini-GBIC ports. It is optimized for maximum system availability, with fully redundant stacking, redundant power options, and dual images for resilient firmware upgrades. The enhanced quality of service (QoS) and traffic-management features help ensure clear and reliable voice and video communications. The distinctive features of the Cisco SG2010P 48 port poe switch are showing in the below:

  • IEEE 802.3af PoE delivered over any of the forty-eight 10/100/1000 ports
  • Dual images for resilient firmware upgrades
  • 96 Gbps nonblocking, store-and-forward switching capacity
  • Fully resilient stacking provides optimized growth with simplified management
  • ACLs for granular security and QoS implementation
  • Configuration and monitoring from a standard web browser

HP 48 Port PoE switch

HP also offers many 48 port gigabit poe switch, such as HP J9853A(50/volume per month), HP 2530-48G(1300/volume per month), HP 2530-48G… HP 2530-48G is the hottest one among all the HP 48 port gigabit poe switches. The HP 2530-48G (J9775A) switch 48 RJ-45 auto-sensing 10/100/1000 ports (IEEE 802.3 Type 10BASE-T, IEEE 802.3u Type 100BASE-TX, IEEE 802.3ab Type 1000BASE-T) and four small form-factor pluggable (SFP) slots for fiber connectivity. The HP 2530-48G 48 port gigabit poe switch consists of four fully managed Layer 2 edge switches, delivering cost-effective, reliable, and secure connectivity for business networks.

FS.COM 48 Port PoE switch

Different from Cisco and HP, the total volume of FS.COM 48 poe switch is far less than Cisco and HP. For FS.COM 48 port poe switch, it offers S5800-48F4S, S3800-48T4S, S5850-48T4Q, and etc. S5800-48F4S 48 port poe switch is a availability, high-compatibility and network-scaling applications of data center as a carrier Access switch. It has 48 port 1GbE SFP and 4 port 10GbE SFP+ in a compact 1RU form factor and low latency L2/L3 Ethernet switch. With support for advanced features, including MLAG, SFLOW, SNMP etc, this switch is ideal for traditional or fully virtualized data center.

48 port poe switch fs.com

48 Port PoE switch: Cisco Vs HP Vs FS.COM

In this article, we would mainly give a comparison on 48 port poe switch among the above three vendors in the respective of power budget, switching capacity, and switching layer.

—Power Budget

Power budget attaches great importance to a PoE switch. And that is a vital element that should be considered for every switch buyers. For Cisco SG2010P 48 port poe switch, each port has independent overload and short-circuit protection, along with LED indicators to show power status. Maximum power of 15.4W to an Ethernet port—360W, total available to all ports with regular AC power; 280W, total available with RPS. The power consumption range of HP 2530-48G 48 port gigabit poe switch is between 29.5 W and 59.5W. The maximum power draw of FS.COM S5800-48F4S 48 poe switch is 75W.

—Switching Capacity

Switch capacity is often a measure of the switch’s fabric bandwidth and the switch’s packets per second forwarding capacity. Sometimes a switch’s capacity (fabric bandwidth and/or PPS) cannot support all its edge ports running at 100% with any frame size. At the access-layer it’s more common with plenty of switch ports but with less switching-capacity (since it’s highly unlikely that all ports are operating at full speed at all times). The switching capacity of Cisco SG2010P is 96 Gbps non-blocking, HP 2530-48G is 104 Gbps, and FS.COM S5800-48F4S is 176 Gbps and its non-blocking bandwidth is 88 Gbps.

—Switch Layer

Network switches are often described as Layer 2 or Layer 3. Small networks can be built using just Layer 2 devices, but most corporate networks will have a mix of Layer 2 and Layer 3 switches. Dumb Layer 2 products are a cheap and easy way of providing connectivity to working groups while more intelligent Layer 3 switches enable departmental networks to be segmented and controlled with no loss of bandwidth. Both Cisco SG2010P and FS.COM S5800-48F4S support layer 2 and layer 3. HP 2530-48G deliver only full Layer 2 capabilities.

Here are the detailed specification of the above mentioned three 48 port PoE switches.

Switch Ports Switching capacity Power Consumption Switching layer Price
Cisco SG2010P 48 RJ-45 connectors for 10BASE-T/100BASE-TX/1000BASE-T & 4 SFP+ ports 96 Gbps non-blocking 360W Layer 2/3 $1,299
HP 2530-48G 48 RJ-45 auto-sensing 10/100/1000 ports & 4 small SFP slots 104 Gbps 59.5 W Layer 2 $1,686
FS.COM S5800-48F4S 48 port 1GbE SFP & 4 port 10GbE SFP+ ports 176 Gbps (88 Gbps non-blocking) 75W Layer 2/3 $1,699

Conclusion

This article mainly introduced three different 48 port PoE switches from Cisco, HP, and FS.COM. Power consumption, switching capacity and switching layer are what the users should consider when choosing a 48 port poe switch. As for selection, you can choose a proper one according to your budget, switching demand and reliable manufacturer. For reliable 48 port gigabit switch poe vendor, FS.COM is a wise choice. Anyway, there is still a promising prospect for 48 port PoE switches.

Fiber Optic Connector Types, Market, & Installation

Over the years, fiber optic connectors are no longer a deep concern for network installers. The industry standards of making connectors replaced the complex installation. A number of fiber optic connector types have been evolved and withstood the test of time to become industry standards. The main types of fiber optic connectors include: ST, FC, SC, and LC. These connectors come in many configurations and usages. This article touches on the very basics of fiber optic connectors types, market as well as its installation.

Fiber optic connector

Fiber Optic Connector Type

The common fiber optic connector types include ST, SC, FC, LC, MU, E2000, MTRJ, SMA, DIN as well as MTP & MPO etc. Each one has its own advantages, disadvantages, and capabilities. All fiber optic connectors have four basic components, which are the ferrule, connector body, cable, and coupling device. They have been widely used in the termination of fiber optic cables, such as fiber optic pigtail, fiber optic patch cables and so on. In this passage, we would mainly give brief introduction to the four most common fiber optic connector types.

—ST Connector (Straight Tip)

One most common of fiber optic connectors is the ST connector. This simplex fiber connector evolved from previous designs and was finally introduced by AT&T in the mid-late 1980s. It has become the de-facto standard in the security market and is commonly used in the AV market on such products as HDSDI, RGB/DVI, and others. It is available in both multimode and singlemode versions. The insertion loss of the ST connector is less than 0.5 dB, with typical values of 0.3 dB being routinely achieved. It is relatively easy to terminate in the field. Besides, it has good strain relief and good, but not exceptional attenuation characteristics.

ST fiber optic connector

—LC Connector (Lucent Connector)

Developed by Lucent Technologies, the LC fiber optic connector has become the ubiquitous fiber optic connector for telecom applications. But LC connector does not stand for Lucent Connector. It is used in conjunction with small form pluggable (SFP) optical transceivers. These SFP devices are now becoming very common in Pro AV applications for such products as HDMI, DVI, audio, optical distribution amplifiers, optical/electrical/optical (OEO) switches, and so forth. The LC connector is smaller than all other connectors and is a push-pull design connector.

LC fiber optic connector

—SC Connector (Subscriber Connector)

The SC fiber optic connectors are common in singlemode fiber optic telecom applications and analog CATV. Like the LC connector, this is also a push-pull design and is also commonly used in patch panels that act as the connector interface between the main field cable and smaller patch cords connected to the fiber transmission equipment. Some manufacturers of fiber AV equipment also use SC connectors in conjunction with their optical emitter and detector devices.

SC fiber optic connector

—FC Connector (Ferrule Connector)

The FC fiber optic connector has become the connector of choice for singlemode fiber. It is mainly used in fiber optic instruments, singlemode fiber optic components, and high-speed fiber optic communication links. This high-precision, ceramic ferrule connector is equipped with an anti-rotation key, reducing fiber endface damage and rotational alignment sensitivity of the fiber. The key is also used for repeatable alignment of fibers in the optimal, minimal-loss position. Multimode versions of this connector are also available. The typical insertion loss of the FC connector is around 0.3 dB.

FC fiber optic connector

You can check the detailed specification of the above four fiber optic connectors on the below table.

Connector Type Singlemode (9/125) Insertion Loss (dB) Multimode Insertion Loss (dB Return Loss (dB)
ST Connector ≤0.5 ≤0.5 ≥40
LC Connector ≤0.25 N/A ≥40
SC Connector ≤0.25 ≤0.5 ≥50
FC Connector ≤0.25 ≤0.5 ≥50

Fiber Optic Connector Market

The business of global fiber optic connectors have achieved big success over the past few years. The global fiber optic connector market is expected to reach USD 5.9 billion by 2025, according to a new report by Grand View Research, Inc. and is expected to gain traction over the forecast period. The global marketplace is majorly driven by the growing adoption of the fiber optic technology. The fiber optic connector market type includes different fiber optic connectors such as SC connector, LC connector, FC connector, ST connector, MTP connector, and others. Based on fiber optic applications, the market is segmented into military & aerospace, oil & gas, telecom, medical, BFSI, railway, and others.

Fiber Optic Connector Installation

It is easy to install fiber optic connector, a fiber optic cable connection can be completed within 30 minutes. Just follow the following steps:

  • Step Ⅰ: Strip the plastic jacket at the end of the fiber optic cable. Optic cable ends have jackets to prevent any damage in shipping from the manufacturer. Clamp the plastic jacket, using a fiber optic stripper tool, which has a designated slot to fit the size of a fiber optic jacket. Squeeze the handles of the stripper like pliers. Pull the jacket away from the fiber optic cable.
  • Step Ⅱ:Open the back chamber of the epoxy glue gun by twisting off the back cap. Insert the epoxy glue tube into the chamber and squeeze lightly. You will only need a few ounces of glue for the task. Screw the cap back on the epoxy glue gun chamber.
  • Step Ⅲ:Inject epoxy glue into the fiber optic connector socket. Each fiber optic connector has two sockets on each side of it to form the connection. Insert the glue gun into the connector socket. Press and hold the trigger to insert the glue. The glue should spot should not be larger than an eye pupil.
  • Step Ⅳ:Insert one fiber optic cable end into the connector sockets. Hold the cable in the socket and count to 10. Let go of the fiber optic cable and connector. Check that the cable stays in position once you let go of it.
  • Step Ⅴ:Place the new fiber optic connection into an an epoxy curing oven. Turn on the oven and turn the timer knob to six minutes. Insert the fiber optic connector attached to the cable into one of the curing oven slots. Press the start button on the oven. Pull out the connector from the oven slot. Wiggle the connector end to test the stability of the connection. If it seems fragile, reinsert the connector into the oven and cook it for a few more minutes. Repeat steps three to five to seal the fiber optic connector on both sides.

Conclusion

This article mainly discussed about the fiber optic connector type, fiber optic connector market, as well as its installation. With the wide variety of fiber optic connectors available today, companies can easily convert to fiber optic networks and start enjoying the benefits of a faster, more efficient work environment. If you need fiber optic connectors, FS.COM is a wise choice. They provide a full range of fiber optic connectors and offer customdized service. The fiber optic connect market ahead will be more beoyant, we shall see.

Comparing Three Fiber Optic Cable Manufacturers—Monoprice, C2G & FS.COM

To meet surging market needs for fiber optic cable product, more and more fiber optic cable manufacturers emerges to gain its market share. Fiber optic cable is a necessity for most households. How to keep a balance between price and quality? And how to select a reliable fiber optic cable manufacturer? As the representatives of reputable fiber optic cable manufacturers, Monoprice, C2G and FS.COM are frequently recommended by many users. This article would give a brief introduction to those three companies and analyze the difference between their fiber optic cable.

fiber-patch-cords

Monoprice—The Meek King of Cables

Five years ago, Monoprice was associated with two things: HDMI cables and nerds. Being able to tell people about two-buck Monoprice cables, and to explain, with confidence, why Monster cables were a scam, was one of the wonderful small privileges of geekdom; today, it’s one of the dwindling few. Its cables were cheap! They worked fine! The company was based in the U.S., processed orders quickly, had a return policy and answered emails. It was like eBay without the risk.

Founded in 2002 and propelled by word-of-mouth support — the company rarely advertises — Monoprice is now a $120m-a-year business. Monoprice CEO Ajay Kumar says the company has been growing at between 25% and 35% a year for the last five years. The office and shipping operations run out of a 173,000 square-foot warehouse in Rancho Cucamonga, California. Kumar credits Monoprice’s early rise to one thing. “The primary focus early on was cables,” he says, “and the thing that really accelerated the company was HDMI.” For the fiber optic cables, they offer a wide range of them, singlemode, multimode and etc.

C2G—A Trustful Cable Vendor

C2G (formerly Cables To Go), a division of Lastar, Inc., is an industry leader in high performance cabling and connectivity solutions. Founded in 1984, the company provides end-to-end connectivity solutions serving a variety of markets—including hospitality, education, healthcare, corporate, home theater and digital signage. C2G also delivers customized connectivity products and solutions renowned for superior quality, value, and innovation using premium components and the latest technologies to maximize cable performance and ensure compliance with industry specifications for each cable and its designated application. Fiber optic cabling and hardware products including single mode and multimode fiber patch cables of 62.5/125, 50/125, and 9/125, and fiber distribution products used in high tech networking.

FS.COM—A Cost-effective Fiber Optic Cable Manufacturer

Founded in 2009, FS.COM gradually becomes a leading company devoting to research & development, and offer fiber connectivity network solutions for carriers, ISPs, content providers and networks. With a few years of development and accumulation, FS.COM have owned a whole series of optical communication products including the WDM equipment, transceivers, fiber optic assemblies, racks & enclosures, bulk fiber cables, enterprise network and so on.

Their wholesale fiber optic cable products are offered at the lowest price and fully compatible with the original devices. They assured to every customers that every fiber optic cable offered by FS.COM before shipping has to go through strict test to assure high performance. They cover a wide range of fiber optic cables, such as bulk fiber cables, fiber patch cables, MTP/MPO fiber cable, fiber cable assemblies and etc.

Fiber Optic Cable Manufacturers—Monoprice Vs. C2G Vs. FS.COM

—Fiber Optic Cable Price

Price is paramount for every customers when they are purchasing. We can’t list all the products from their website and compare them here. So let’s take the 1m OS2 9/125 singlemode fiber optic cable as an example, the C2G 1m OS2 9/125 singlemode fiber optic cable is sold at $42.99. Monoprice is only $11.35. The price of 1m OS2 9/125 singlemode fiber optic cable from FS.COM is $2.8. You can check it on the below table.

Comparing Three Fiber Optic Cable Manufacturers Table

—Products Options

Both FS.COM and C2G offer a full range of fiber optic cable that are of performance. While monoprice, nowadays do not have many selections of optical modules. But if you need HDMI, video or power cables, you can definitely have a look at their website.

—Reputation

FS.COM is known as the cost-effective optical transceiver and fiber optic cable manufacturer that offer high-quality and low price products. Monoprice is mostly recommended for its HDMI, video and power cables. C2G’s price is a little bit higher, but their quality is nice.

Why Not Use Third-party Dell SFP Transceivers for Your Dell Switches?

As a giant in IT technology, Dell’s products have been warmly welcomed by many Ethernet users over the years. From low-end Dell N1500, N3000 and N4000 series to the advanced Dell Z-Series, Dell provides a range of switch products for smaller enterprises and large campus networks. As basic and indispensable fiber optic components in fiber optic communication, SFP transceiver module plays a prominent role in optical transmission. This article will discuss what kind of third-party Dell SFP transceivers are compatible with Dell switches and which fiber optic transceiver manufacturer is the most reliable.

Dell SFP Transceivers

Dell divided their switches series as: web-managed switches, managed campus switches, modular chassis switches, data center switches, M-Series blade switches, Fibre Channel SAN switches, and high-performance computing switches. Dell puts emphasis on 1G/10G/40G switches. And thus, they manufactured a number of SFP transceiver modules, SFP+ modules, QSFP+ transceivers and DAC cables. Dell SFP transceiver delivers fiber connectivity to extend the range of your network. Dell 1000Base-SX, 1000Base-LX, 1000Base-ZX, 1000Base-Bidi, 1000Base-T are designed for SFP ports on Dell switches to support 1G Ethernet transmission.

dell-sfp-transceiver

The Dell networking 1000BASE-SX SFP transceiver module provides 1GbE connectivity up to 550 m. This hot-pluggable transceiver with SFP (Small Form Factor Pluggable) footprint features a duplex LC connector. Additionally, it provides a unique enhanced digital diagnostic monitoring interface, which allows real-time access to device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power, and transceiver supply voltage.

Third-party Dell SFP Transceivers for Dell Switches

In addition to Dell original SFP transceivers, there are many third-party vendors who produce Dell compatible SFP transceivers, such as FS.COM. Our Dell SFP Transceivers are designed and tested to be fully compatible in all Dell switches, networking, and data center product lines and applications. We offer a wide variety of Dell SFP transceivers compatible for Dell switches, such as Dell Networking SFP-1G-LX 850nm (multimode), Dell Networking SFP-1G-LX 1310nm (singlemode), Dell PowerConnect 1000BASE-EX SFP 1550nm (singlemode), Dell Force10 Networks 1000BASE-SX SFP 850nm (multimode), and etc.

Comparison Between Dell and FS.COM Dell SFP Transceivers

There are so many third-party transceiver manufacturers providing compatible Dell SFP transceivers modules for Dell switches. But which fiber transceiver supplier should you choose? The answer is FS.COM. Now let’s see why FS.COM is more advantageous by comparing Dell with FS.COM Dell SFP.

—SFP Transceiver Module Category

The alternative Dell SFP transceivers are limited at Dell 1000Base-SX, 1000Base-LX, 1000Base-ZX, 1000Base-Bidi, 1000Base-T. You can rarely find 1G SFP transceiver modules on their official website. FS.COM provides a wide range of Dell SFP transceivers. Like being mentioned, Dell switches support some fiber transceivers from third-party fiber optic transceiver manufacturers. FS.COM offers many Dell compatible SFP transceivers, Dell networking compatible 1000BASE-T SFP copper transceiver, Dell PowerConnect compatible 1000BASE-SX SFP transceiver, Dell Force10 Networks compatible 1000BASE-ZX SFP transceivers, and etc, which can meet your various requirements for Dell switches.

—Fiber Transceiver Quality

Optical fiber transceiver attaches great importance to every brand, retails and customers. Reputation always comes first. Some manufacturers, however, produce SFP transceiver modules with low cost to attract more buyers and make profit. But their Dell SFP compatibility cannot be guaranteed. For FS.COM, we have switches from Cisco, Dell, Extreme, Juniper and other famous brands in our test center. Every fiber transceiver offered by FS.COM before shipping has to go through strict test to assure 100% compatibility and high performance.

—Fiber Transceiver Price

In addition to fiber transceiver quality, fiber transceiver price is another vital factor before you buy optical fiber transceivers. Comparing Dell SFP transceivers’ price of FS.COM with that of other fiber optic transceiver manufacturers, it is obvious that FS.COM has more advantages. That is one of the reasons why FS.COM wins popularity among customers. You can check the following table about price discrepancy between original Dell SFP transceiver and FS.COM Dell compatible SFP transceiver.

Module Dell FS.COM
Dell Networking 1000BASE-SX SFP $300 $6
Dell Networking 1000BASE-LX SFP $600 $7
Dell Networking 1000BASE-ZX SFP $2,400 $24
Dell Networking 1000BASE-T SFP $275 $16

Conclusion

If you need Dell SFP transceivers for your Dell switch, you can buy it from both Dell and third-party vendors. How to choose a reliable supplier from so many third-party Dell compatible fiber transceiver manufacturers? Before buying fiber optical transceiver, the quality, compatibility, price, shipping, after-sales service should be considered. As one of well-known third-party fiber optic transceiver manufacturers, FS.COM is suggested to be a good choice for Dell SFP transceiver.

OM3 And OM4 Fiber for 10G/40G/100G Network

Multimode fiber has been highly favored by Ethernet users and gained the widest acceptance in network backbones where it has offered users the opportunity to extend link distances, increase network reliability, and lower costs by centralizing electronics. OM3 fiber emerges just at the right time. The predominance of OM3 fiber is that utilizes laser-optimized fiber, which is the highest-capacity medium for short-wave 10G optical transmission. OM4 fiber just joined multimode fiber family after OM3 fiber in order to meet the requirement of longer range applications. This passage would give a brief introduction to OM3 and OM4 fiber, give a further analysis on their differences and selection guide, as well as list their applications.

Introduction to OM3 & OM4 Fiber

Both OM3 and OM4 fiber meet the ISO 11801 standard. The standard specifies that OM3 fibers are capable of 10 Gb/s performance over distances of up to 300m. Like being mentioned, the laser optimized 50/125 mm multimode OM3 fiber is of predominance, which provides sufficient bandwidth to support 10 GbE and beyond with cable lengths up to 550 meters. OM4 fiber is a further improvement to OM3 fiber. It also uses a 50µm core but it supports 10 Gigabit Ethernet at lengths up 550 meters and it supports 100 Gigabit Ethernet at lengths up to 150 meters.

OM4 fiber cable

Main Difference Between OM3 And OM4 Fiber

—Optical attenuation

Attenuation is caused by losses in light through the passive components, such as cables, cable splices, and connectors. Attenuation is the reduction in power of the light signal as it is transmitted (dB). The maximum attenuation of OM3 and OM4 fiber allowed at 850nm: OM3<3.5 dB/Km; OM4 <3.0 dB/Km. So it is obvious that OM4 fiber causes lower losses due to different construction.

—Modal dispersion

As is known to most people, modal dispersion attaches great importance to bandwidth. The lower the modal dispersion, the higher the modal bandwidth and the greater the amount of information that can be transmitted. The minimum OM3 and OM4 fiber cable bandwidth at 850nm: OM3 2000 MHz·km; OM4 4700 MHz· km. The higher bandwidth available in OM4 means a smaller modal dispersion and thus allows the cable links to be longer or allows for higher losses through more mated connectors.

OM3 And OM4 Fiber 10G/40G/100G Transmission Distance

The maximum transmission distance of OM4 fiber is 400-550m (depending on module capability) while OM3 fiber can only be up to 300m. And thus, OM4 can tolerate a higher level of loss at distances between 200-300m as it is designed to operate at longer distances than OM3 fiber. It may be a more flexible option for network managers to install OM4 fiber within these instances. You can check difference between OM3 and OM4 in transmission distance in the following table.

OM3 and OM4 fiber cable distance

OM3 And OM4 Fiber Price

In comparison to OM3 fiber, the cost for OM4 is higher due to the manufacture process and market fluctuations. In a large extent, cost depends on the construction type of the cable (loose tube, tight buffered, etc.). OM4 fiber cable is about twice as expensive as OM3 fiber cable. This means that the cost difference of lots of fiber products such as standard fiber patch panels, MTP cassette modules, fiber patch cords is very small (as the volume of cable is small).

OM3 And OM4 Fiber Selection Guide

Fifty micron OM3 fiber is designed to accommodate 10 Gigabit Ethernet up to 300 meters, and OM4 can accommodate it up to 550 meters. Therefore, many users are now choosing OM3 and OM4 over the other glass types. In fact, nearly 80% of 50 micron fiber sold is OM3 or OM4. If you require higher data rates or plan on upgrading your network in the near future, laser optimized 50 micron (OM3 or OM4) would be the logical choice. Compared to OM4, OM3 fiber is more future proofing for most applications, which allows speeds of 10 GB/s up to 100 GB/s. OM4 fiber provides users a transmission solution over longer distances and leaves more wiggle room in optical budgets.

OM3 and OM4 fiber cables are typically used in data center structured cabling environments running high speeds of 10G or even 40 or 100 Gigabit Ethernet, SAN (Storage Area Networking), Fiber Channel, FCOE (Fiber Channel Over Ethernet) with such manufacturers as Cisco, Brocade, EMC and others. Typical applications could be virtualized or internal cloud core data center applications. For 40G and 100G fiber cable applications, MTP/MPO cable would also be a great choice. MTP cabling assemblies (MTP/MPO trunk cable, MTP/MPO harness cable, MTP/MPO conversion cable, etc), with their overwhelming advantages, providing a fast, simple and economical upgrade path from 10 Gigabit to 40 or 100 Gigabit applications.

Conclusion

In this article, we mainly discussed OM3 fiber, OM4 fiber, their main differences, transmission guide and applications for 10G/40G/100G network. We put emphasis on OM3 and OM4 fiber 10G/40G/100G transmission distance and selection guide. OM3 and OM4 multimode fiber provide a cost effective solution for inside buildings or corporate campuses. Hope this article would be helpful for you to understand OM3 and OM4 fiber and to select right fiber cable for yourself.

QSFP-100G-SM-SR Vs QSFP-100G-CWDM4-S

With the thriving 100G market, QSFP28 has become the dominant form factor for 100G networks. The QSFP28 transceiver offers four channels of high-speed differential signals with data rates ranging from 25 Gbps up to potentially 40 Gbps, and meets 100 Gbps Ethernet (4×25 Gbps) and 100 Gbps 4X InfiniBand Enhanced Data Rate (EDR) requirements. As a world leader in IT and networking, Cisco 100G transceivers have been highly favored by many Ethernet users. Cisco 100G QSFP-100G-SM-SR and Cisco QSFP-100G-CWDM4-S are two different form factors of Cisco 100G optics. This article would give brief introduction to Cisco 100G QSFP-100G-SM-SR and Cisco QSFP-100G-CWDM4-S, and further analysis QSFP-100G-SM-SR Vs QSFP-100G-CWDM4-S.

Cisco 100G QSFP-100G-SM-SR

The maximum transmission distance of the Cisco QSFP-100G-SM-SR QSFP module is kilometers via a standard pair of G.652 singlemode fiber with duplex LC connectors. The 100 Gigabit Ethernet signal is carried over four wavelengths. Multiplexing and demultiplexing of the four wavelengths are managed within the device. The operating temperature range is from +10 to +60°C with an optical link budget of 4.2 decibels. This 4.2-decibel link budget offers the ability to support the loss from patch panels in the link in a data center environment. QSFP-100G-SM-SR is interoperable with QSFP-100G-CWDM4-S.

Cisco 100G QSFP-100G-CWDM4-S

As same as Cisco 100G QSFP-100G-SM-SR, Cisco 100G QSFP-100G-CWDM4-S supports link lengths of up to 2 kilometers as well. The QSFP-100G-CWDM4-S optical transceiver is for singlemode fiber. There are 4 CWDM-WDM lanes in the 12761-1331-nm wavelength window. This 100GBASE QSFP-100G-CWDM4-S Cisco 100G transceiver converts 4 input channels of 25Gb/s electrical data to 4 channels of CWDM optical signals and then multiplexes them into a single channel for 100Gb/s optical transmission. It uses a duplex LC connector on the optical interface and uses an MSA-compliant 38-pin edge type connector on electrical interface. This QSFP-100G-CWDM4-S Cisco 100G transceiver is equivalent to Cisco QSFP-100G-SM-SR.

Cisco 100G QSFP-100G-CWDM4-S

QSFP-100G-SM-SR Vs QSFP-100G-CWDM4-S

From the above descriptions, it is obvious that the Cisco QSFP-100G-SM-SR is compatible with Cisco QSFP-100G-CWDM4-S 100G optical transceivers. They are used interoperably. And thus, they have many things in common.

—Technology

Multiplexing and demultiplexing of the four wavelengths are managed within both Cisco 100G QSFP-100G-SM-SR Vs Cisco QSFP-100G-CWDM4-S. They convert 4 input channels of 25Gb/s electrical data to 4 channels of CWDM optical signals and then multiplexes them into a single channel for 100Gb/s optical transmission.They all use a standard pair of G.652singlemode fiber.

—Transmission distance

The transmission reach of both Cisco 100G QSFP-100G-SM-SR and Cisco QSFP-100G-CWDM4-S all can be up to 2 kilometers.

—Price

The original Cisco 100G QSFP-100G-SM-SR and Cisco QSFP-100G-CWDM4-S optical module is pricey, so nowadays many enterprises and data center workers would choose to buy Cisco compatible optical modules from third party vendor. For the price of QSFP-100G-SM-SR Vs QSFP-100G-CWDM4-S, they are identical at fs.com. At Amazon.com, the price is much higher. You can check them by clicking the following link.

Cisco 100G QSFP-100G-SM-SR

Cisco QSFP-100G-CWDM4-S

Cisco QSFP-100G-CWDM4-S

Conclusion

Through this article, we are clear that the QSFP-100G-SM-SR and QSFP-100G-CWDM4-S can be used interoperably. And they are totally identical at large extent. And thus, there are basically no difference on QSFP-100G-SM-SR Vs QSFP-100G-CWDM4-S. Nowadays, they have been applied to data center, high-performance computing networks, enterprise core and distribution layers, and service provider applications.

Mikrotik Switches Vs Cisco Switches

As a worldwide leader in IT and fiber optical networking, Cisco switches play a leading role in manufacturing network switches and in providing switching solutions for data center and enterprise networks with large and medium-size forms. MikroTik, a Latvian company which was founded in 1996 to develop routers and wireless ISP systems. Their cloud switches are highly favored by many Ethernet users in recent years. And thus, people are entangled with Cisco and Mikrotik switches. This article would give brief introduction to Cisco and Mikrotik switches, and put emphasis on Mikrotik Switches Vs Cisco Switches.

Cisco Switches

According to different usage, Cisco divided their switches into the following categories: LAN Access Switches, LAN Digital Building Switches, LAN Core and Distribution Switches, Data Center Switches, Service Provider Switches, Industrial Ethernet Switches, Virtual Networking and Small Business Switches. And every category has its switching series. The Cisco Catalyst series switch delivers ease of management and configuration for small to medium-sized enterprise wiring closets in a single system, without the need for additional modules. The following list is about the Cisco Catalyst series switch.

Cisco Catalyst series switch

Mikrotik Switches

Comparing to Cisco switches, the total amount of Mikrotik switches is much smaller. According to the official website of Mikrotik, there are only twelve Mikrotik switches. Ethernet smart switches and cloud core router switches are two series switches of Mikrotik switches. The cloud core switch, or cloud router switch, abbreviated as CRS, is a highly configurable switch, powered by RouterOS. They are the new products of Mokrotik switches. For the cloud router switch, there are nine models currently available. Here lists three different cases of the cloud core switch:

  • CRS125-24G-1S-2HnD-IN (integrated wireless, indoor case)
  • CRS125-24G-1S-IN (indoor case)
  • CRS125-24G-1S-RM (rackmount case)

Mikrotik Switches Vs Cisco Switches

—CPU

The CPU on both Cisco and Mikrotik switches is used for management purposes (snmp stats, cli management, etc) and it does not affect the data path. Switching is not done in CPU, neither on Cisco nor on Mikrotik. Switching is done on dedicated ASIC chips specifically designed for this job (thus giving wirespeed). So comparing the CPUs won’t mean much about forwarding performance – which is the metric you should care about.

—Power Consumption

One of big problems with Mikrotik switches is their power. The buyers would prefer to pay another couple hundred dollars to have dual power supplies that are removable. And thus, many Ethernet users cannot use Mikrotik in these cases. Comparing to Mikrotik switches, Cisco switches have less power consumption by their advanced technology.

—Network Monitoring Software Systems

Most network monitoring software systems natively understand, support and auto-detect Cisco devices and support Cisco SNMP OIDs (CPU, temp, load, bandwidth, errors, power supply status, and many other sub-system counters in a Cisco device.

When configuring your existing network monitor system(s), your network monitor system(s) may not even know what a Mikrotik is and probably does not have native built-in MIBs/OIDs used by SNMP to auto-check/monitor a network. Thus, an administrator would probably need to configure the Mikrotik graphic icons and configure all of the SNMP checks for MIBs/OIDs from/to a Mikrotik.

Mikrotik Switches Vs Cisco Switches: How to Select?

Mikrotik routers and switches are great. Most people like them and use them almost everywhere. However, because Mikrotik is still the new kid on the block when it comes to carrier-grade commercial-grade business grade high-throughput products, it may sometimes be a little difficult to find local network technicians or local phone support for Mikrotik products when adding new equipment into your network. So Cisco switch is more solid and people are more satisfied with them.

A Comprehensive Understanding of CFP Modules

As a new emerging technology, 100G is some sort of evolution and part of revolution. The new CFP (C form-factor pluggable) optics is now a revolutionary step as one form factor of 100G optic transceiver. The CFP modules offer the enabling step for cost-effective and successful 100G deployment. So what is it? And how does it work in 100G network? This article would give a comprehensive introduction to CFP module.

100G CFP module

CFP Wiki

Abbreviated as CFP module, C Form-Factor Pluggable transceiver is a multi-sourced pluggable transceiver used in the transmission of high-speed digital signals. It is specified by a multi-source agreement (MSA) between competing manufacturers. The c stands for the Latin letter C used to express the number 100 (centum), since the standard was primarily developed for 100 Gigabit Ethernet systems. It is a hot-swappable input/output transceiver that is used in the data communication and telecommunication networks.

The CFP module was designed after the small form-factor pluggable transceiver (SFP) interface, but is significantly larger to support 100 Gbit/s. While the electrical connection of a CFP module uses 10 x 10 Gbit/s lanes in each direction (RX, TX) the optical connection can support both 10 x 10 Gbit/s and 4 x 25 Gbit/s variants of 100 Gbit/s interconnects (typically referred to as 100GBASE-SR10 in 100 meter MMF, 100G CFP LR10 and 100G CFP LR4 in 10 km SMF reach, and 100GBASE-ER10 and 100GBASE-ER4 in 40 km SMF reach respectively.)

Core Features of CFP Modules

– Support to 103 Gbps and 112 Gbps aggregate bit rates.

– Connector Interface

– Operating Case Temperature

– Diagnostic Monitoring

– RoHS6 Compliant

– Single 3.3V Supply for Power and a Power dissipation < 12W

One distinctive feature of CFP modules is that they support digital diagnostic monitoring functions or the digital optical monitoring. This is the feature that gives users the ability to monitor the real-time parameters such as the optical output power, the optical input power, the temperature, the laser bias current and the transceiver supply voltage.

Inner Structure of CFP Modules

The basic CFP modules consist of the following parts.

1. An Integrated Coherent Optics Transmitter which sends the TX optical signal.

2. An Integrated Coherent Optics Receiver which receives the RX optical signals.

3. The CFP connector

4. Coherent DSP

Most of the CFP module adhere OIF CFP-ACO (Analog Coherent Signals) and are connectable to multiple DSP’s. The biggest engineering challenge that CFP2 faces is the adoption of the high-speed 25 Gbps electrical interface due to the reason that the CFP was based on the third generation.

It can be a multimode parallel optic transceiver module that is designed to offer high-density 100G Ethernet and Optical Transport Network (OTN). The device is designed to offer maximization of the delivery of the 10G data channels for the 100G networks that support 100 Gbps SR10 and 10 X 10 Gbps.

Development of CFP Modules

The original CFP specification was proposed at a time when 10 Gbit/s signals were far more achievable than 25 Gbit/s signals. As such to achieve 100 Gbit/s line rate, the most affordable solution was based on 10 lanes of 10 Gbit/s. However, as expected, improvements in technology has allowed higher performance and higher density. Hence the development of the CFP2 and CFP4 specifications. While electrical similar, they specify a form-factor of 1/2 and 1/4 respectively in size of the original specification. Note that CFP, CFP2 and CFP4 optical transceiver are not interchangeable (but would be inter-operable at the optical interface with appropriate connectors). The following table shows the basic parameter of CFP, CFP2 and CFP4 transceivers.

basic parameter of CFP, CFP2 and CFP4 transceivers

Conclusion

In this article, we mainly introduced the definition, core features, inner structure and development of CFP modules. Comparing to 100G QSFP28 transceiver, CFP price is not so competitive. But CFP optical transceiver is still the key to cost-effective and reliable 100G deployment, and it has been widely deployed in OTU4 411-9D1F, 100GBASE-LR4 Ethernet and data centers.

Related article:
100G QSFP28 and CFP Transceiver Cabling Solutions