How to Use A KVM Switch (Keyboard, Video, Mouse Switch)

With the number of network equipment grows, data centers are facing the pressure of managing multiple computers and networking devices efficiently. If you need to control multiple computers, you need to buy sets of keyboard, monitor, and mouse. This is not the most effective management considering space-consuming and budget. Also keeping a row of large CRT monitors with keyboards and mouse may be problematic. Thus the KVM switch is invented to solve the problems by monitoring and controlling the devices locally and remotely. So what is a KVM switch? How to use a KVM switch? This article will explain it to you.

What Is A KVM Switch?

The KVM switch is a hardware device that allows users to manage multiple computers from a single keyboard, video display monitor and mouse. By pressing the button on the KVM switch, the administrator can monitoring all the devices locally and remotely. Using KVM switches in data centers not only saves administrators the cost of buying a dedicated keyboard, monitor and mouse for each computer but also saves space in the server room and limit cable clutter. It helps streamlines your work flow and increases your efficiency. Due to its versatile advantages, it is widely used in home offices, laboratories, small and medium-sized enterprises.

alt How to use a KVM Switch

How KVM Switch Works?

The KVM switch can control a number of computers and switch from one computer to another simply by pressing a button on the keyboard. Users can connect their computers to KVM switches via Cat5, Cat5e, and Cat6 patch cables or the specific KVM switch cable kits. Then, connect the keyboard, monitor, and mouse console to the KVM switch. If your switch is equipped with a console, you can skip this step. It mainly uses a keyboard consisting of a keyboard, mouse, and display to securely access computers, servers, and devices from local or remote users, and to control the network for local or remote users.

alt How to use a KVM Switch

How to Use A KVM Switch?

There are generally three types of switching modes of the KVM switch for us to operate — button switching, OSD menu switching, and shortcut key switching. The button switching is to use the physical button on the KVM, and the corresponding server can be selected by directly pressing the physical button. The OSD menu switching is the KVM internal software. You can use the mouse to select the corresponding server to switch according to the server name displayed on the menu. The shortcut key switching is generally combination keys, such as Ctrl and a data key, 1, 2, 3, 4 four servers, select Ctrl+1 to select the first server, simple and convenient.

alt How to use a KVM Switch

Which KVM Switch to Buy?

When purchasing a KVM switch, the choice usually depends on the number of PCs you need to control. KVM switch with only a few ports is usually more convenient to use without the need to install additional software. They can also be easily managed using hot keys or switch keys. In addition, some of the KVM switches with only a few ports do not even require an external power supply. Due to space needs, advanced KVM switches with multiple ports can be installed in a server rack using only 1U or 2U in space. These KVM switches can also use IP networks to manage power point outlets and control the startup or shutdown of PCs.


KVM switches have become a popular device in data centers with the advantages of space and cost savings, energy efficiency and economy. Thanks for having KVM switches, the server room can be accessed at any time without geographical restrictions. Now that you know how to use a KVM switch and KVM switch buying advice, you can choose a suitable one for your network. FS has high-quality products and professional technical team to provide the ideal solution for your work environment construction. You can have a visit to

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FS.COM N8000-32Q vs Quanta 5032-LY6 40G Spine Switch

With the disaggregation of software and hardware, bare metal switches are attracting more and more attention. It is undeniable that bare metal switches bring a range of benefits to consumers. FS N-series bare metal switches combine with the latest R&D technology, giving consumers an excellent experience when they are introduced to the market. This article will introduce 40G spine switch and make a comparison to provide a reference for your choice.

Why Do You Need a 40G Spine Switch?

As virtualization goes popular, leaf-spine has become the mainstream of data center network deployment. With 40G spine switch, the limitations of traditional three-tier architectures can be overcome and a fast, scalable, predictable, and efficient communication architecture for data center switches can be created.

The Outline of 40G Leaf/Spine Switch

The leaf/spine switch consists of two layers: the leaf layer and the spine layer. The spine layer is made up of switches that perform routing. The leaf layer involves access switch that connects to the endpoints. In a leaf-spine architecture, each leaf switch is interconnected with each spine switch. The number of spine switches is limited to the number of uplink ports on the leaf. With the design, any server can communicate with any other server through one interconnection switch path between any two leaf switches. The architecture can be non-blocking by providing sufficient bandwidth from each leaf switch to spine switches.

altFS.COM N8000-32Q vs Quanta 5032-LY6 40G Spine Switch

The Outline of FS.COM 40G Spine Switch

FS.COM N8000-32Q 32 port switch is a TOR (Top-of-Rack) or Spine switch that delivers a rich choice of interface speed and density, which can be deployed in a wide range of open networking solutions including large-scale layer 2 and layer 3 cloud designs, overlay networks, virtualized or traditional enterprise data center networks. Combined with Cumulus Linux network operating system, FS.COM N8000-32Q switch allows customers to deploy fast, high-capacity fabrics, simplified network automation and consistent tools, and help reduce operational and capital expenditures. With support for advanced features such as MLAG, VxLAN, and SNMP, FS.COM N8000-32Q is ideal for traditional or fully virtualized data centers. FS.COM N8000-32Q supports current and future data center requirements, including an x86-based control plane for easier integration of automation tools and compatibility with SDN via OpenFlow 1.3.11. In addition, it also supports advanced hardware-based VXLAN feature to support over 16M virtual networks.

altFS.COM N8000-32Q vs Quanta 5032-LY6 40G Spine Switch

The Outline of Quanta 40G Spine Switch

Quanta 5032-LY6 is a network switch that supports 32 QSFP + (10/40GbE speed) ports in a compact 1U form factor. By leveraging the new generation commercial silicon chips, Quanta 5032-LY6 is a high-performance, high-density network switch for deploying data center infrastructure. With ONIE (Open Network Installation Environment) pre-loaded on Quanta 5032-LY6, it provides flexibility and allows choice of network operating system supported by the ONIE installer. The CPU board design allows Quanta 5032-LY6 to be installed with different CPU to meet the software requirement. This provides a flexible installation process and faster response to the changing business demands. Quanta 5032-LY6 can offer higher performance, higher availability, lower latency, and better maintainability.

altFS.COM N8000-32Q vs Quanta 5032-LY6 40G Spine Switch

FS vs Quanta 40G Spine Switch

In general, FS.COM N8000-32Q and Quanta 5032-LY6 40G spine switch both can satisfy the basic needs of consumers during operation. But they vary in the choice and configuration of different materials. What are the subtle differences between them? Let’s take a look at the chart below.

Names FS.COM N8000-32Q Quanta 5032-LY6
Ports 32 x 40GE QSFP+ 32 QSFP+ ports
Management Port 1 x Serial Console and

1 x MGMT

1 RJ-45 out-of-band management port (10/100/1000M)
Switching Capacity 2.56Tbps full-duplex 2560Gbps
Forwarding Performance 1.44 Bpps 1904Mpps
Operating System Cumulus® Linux® OS ONIE
Switch Chip Trident 2 BCM56850 Broadcom StrataXGS Trident2
CPU Intel Rangeley C2538 2.4Ghz 4-core Intel Atom Processors
Latency 480ns <600ns
Dimensions (WxDxH) 433.8 x 520 x 43.8 mm 44x435x483mm
Rack Space 1U 1U

How to Choose Between Them?

In addition to what we know about performance and brand reputation, we should also consider three other important factors. First, the price. Quanta 5032-LY6 is priced at $14,200, while FS.COM N8000-32Q offers a good price at $8,299. If the budget is limited, consider choosing a cost-effective one. Second, the product warranty. Quanta 5032-LY6 provides a one-year warranty to consumers. In contrast, FS.COM N8000-32Q is backed by a five-year warranty. If you prefer a full follow-up guarantee, FS may be a good choice for you. Third, the operating system. Quanta 5032-LY6 comes pre-installed with ONIE, while FS.COM N8000-32Q pre-loaded with Cumulus Linux. For those interested in Cumulus operating system, FS.COM N8000-32Q 40G spine switch is definitely the ideal choice.


FS.COM N8000-32Q 40G spine switch belongs to FS N-series switches that designed for data center networks and high-end campus networks, providing stable, reliable and secure Layer 2/Layer 3 switching services. It delivers the high performance and port density with a complete chassis and fabric management solution, enabling converged data centers to operate at any scale while reducing operational costs and infrastructure complexity. In the previous articles, we introduced 10gb switch and 25gb switch of FS N-series switches. If you’d like one to improve your network, don’t hesitate to visit FS.COM.

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SDN vs Traditional Networking: Which Leads the Way?

SDN (Software Defined Networking) has recently received widespread attention from customers, vendors and channel partners. As time goes by, SDN has become one of the most common ways for organizations to deploy applications. This technology helps organizations deploy applications faster and reduce overall deployment costs. Over the years, the technology has been announced as the next focus of the networking industry. Many people are trying to figure out what SDN is and how it will affect their work as a network engineer. It’s time to delve into this emerging technology. This article will help you understand SDN and make SDN vs traditional networking to see which leads the way.

altSDN vs Traditional Networking

What Is SDN?

Emerged in the early 2010s, SDN refers to a network architecture model that allows programmatic management, control, and optimization of network resources. SDN decouples network configuration and traffic engineering from the underlying hardware infrastructure to ensure complete and consistent control of the network using open APIs. Basically, this is a way to use open protocols such as OpenFlow, which can apply globally aware software control at the edge of the network to access network switches and routers that typically use closed and proprietary firmware. SDN is defined by the decoupling of control and packet forwarding planes in the network. It is an architecture that reduces operating costs and speeds up the time required to make changes or provide new services. SDN also enables the network to connect directly to applications via APIs to improve security and application performance. SDN creates a dynamic and flexible network architecture that can change as business needs change.

What Is Traditional Networking?

Unlike SDN, traditional networking has two main characteristics. First, traditional networking functions are mainly implemented in dedicated devices. In this case, “dedicated devices” refer to one or more switches (e.g. 10gb switch), routers, and application delivery controllers. Second, most of the functionality in traditional networking devices is implemented in dedicated hardware. ASIC (Application Specific Integrated Circuit) is commonly used for this purpose. However, this traditional hardware-centric networking is accompanied by many limitations. We will continue to discuss this issue later.

How Is SDN Different From Traditional Networking?

There are three most important differences between traditional networking and SDN.
·First, the SDN controller has a northbound interface that communicates with applications via application programming interfaces (APIs). This enables application developers to program the network directly. While traditional networking works through using protocols.
·Second, SDN is a software-based network, which allows users to control virtual-level resource allocation through the control plane and to determine network paths and proactively configure network services. While traditional networking relies on physical infrastructure (such as switches and routers) to establish connections and run properly.
·Third, SDN has more ability to communicate with devices throughout the network than traditional networking. SDN allows resources to be provisioned from a centralized location, and offer administrators the right to control traffic flow from a centralized user interface through more rigorous review. It virtualizes the entire network and gives users more control over their network capabilities. However, for traditional networking, the control plane is located in a switch or router, which is particularly inconvenient. The administrators cannot easily access it to dictate traffic flow.

Why Companies Are Shifting to SDN?

As data centers continue to change and traditional networking fails to adapt to the environment, vendors are turning to SDN. Here are some reasons.
·First, the proliferation of cloud services means that users need unfettered access to infrastructure, applications and IT resources. And this comes with requirement for more storage, computing, and bandwidth.
·Second, IT is becoming a consumer commodity where BYOD (bring-your-own-device) trend requires networks to be flexible and secure enough to protect data and assets as well as to meet compliance regulations and standards.
However, traditional networking cannot meet the increasing demands because it must adhere to product cycles and proprietary interfaces typical in vendor-specific environments. Network operators are often hindered when trying to customize the programming of the network. Adding and moving devices or bolstering capacity to traditional networking is complex and time-consuming. It requires manual access to individual devices and consoles. The reason SDN becomes an alternative is that it allows administrators to configure resources and bandwidth instantaneously and bring flexibility, efficiency, and resiliency to the data center. It also eliminates the need to invest in more physical infrastructure.


SDN vs Traditional Networking, it seems that the emerging technology SDN is going to revolutionize traditional networking. By adopting network automation, organizations will save a tremendous amount of time and significantly improve the flexibility of the network. If your network is equipped with traditional networking, how do you prepare for this inevitable transition?

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FS N8500-48B6C vs Edgecore AS7312-54XS 25G Bare Metal Switch

The bare metal switch is an open network switch that enables consumers to choose components like application, network operating system, hardware, and driver depending on their own needs. This flexible choice saves time and money for the project, meets different needs, and provides an affordable, easy-to-manage network environment, which is very beneficial to the business. In this article, we will focus on the 25G switch and make a comparison of FS N8500-48B6C 25G bare metal switch and Edgecore AS7312-54XS 25G bare metal switch.

Overview of FS 25G Bare Metal Switch

FS N8500-48B6C switch is a top-of-rack (TOR) or leaf 25G bare metal switch in a compact 1U form factor for high performance and programmable data center environments. It performs excellent low latency and power efficiency in a PHY less design while providing high-reliability features such as redundant and hot-swappable power supplies and fans in forward and reverse airflow configurations. The layer 3 switch supports advanced features such as MLAG, VxLAN, SFLOW, SNMP, and MPLS, making it ideal for a traditional or fully virtualized data center. FS N8500-48B6C supports current and future data center requirements, including an x86-based control plane for easier integration of automation tools, an ONIE installer for 3rd party network operating systems and compatibility with Software Defined Networks via OpenFlow 1.3.11. In addition, FS N8500-48B6C supports the advanced hardware-based VXLAN feature to support over 16M virtual networks.

altFS N8500-48B6C vs Edgecore AS7312-54XS 25G Bare Metal Switch

Overview of Edgecore 25G Bare Metal Switch

Edgecore AS7312-54XS switch is a top-of-rack (TOR) or spine 25G bare metal switch in a compact 1U form factor for high-performance data centers. Edgecore AS7312-54XS can be deployed as a TOR switch supporting 10/25 GbE to servers with 40/100 GbE uplinks, or as a spine switch supporting 40/100 GbE spine interconnects. This open network switch is loaded with the Open Network Install Environment (ONIE) which supports the installation of compatible Network Operating System software, including the open source options Open Network Linux and Open Switch, plus commercial NOS offerings.

altFS N8500-48B6C vs Edgecore AS7312-54XS 25G Bare Metal Switch

FS N8500-48B6C vs Edgecore AS7312-54XS

Though FS N8500-48B6C 25G bare metal switch and Edgecore AS7312-54XS 25G bare metal switch have a lot in common, they differ from each other with different features. Here we list the main characteristics of them.

Names FS N8500-48B6C Edgecore AS7312-54XS
Ports 48 48
Predominant Port Type 25GbE SFP28 25GbE SFP28
CPU Broadwell-DE 2.2Ghz 2-core Intel Atom® C2538 quad-core 2.4
Switching Chip Tomahawk+ BCM56967 Broadcom BCM56967 Tomahawk+
Jumbo Frames 9K Bytes 9216 Bytes
Switching Capacity 3.6Tbps full-duplex 3.6Tbps full-duplex
Forwarding Rate 4.7 Bpps 2.6 Bpps
Integrated Packet Buffer 16 MB 22 MB
MAC address 32K 8K / 136K
VLAN IDs 4 K 4 K
Compatible Software Option Cumulus Linux, Open Compute Project, PicOS™ from Pica8 Inc,  SnapRoute CN-NOS, and Broadcom- ICOS Cumulus Linux, Open Compute Project, PicOS™ from Pica8 Inc, and SnapRoute CN-NOS

Which One to Choose?

With all the features listed above, the FS 25G bare metal switch and Edgecore 25G bare metal switch both perform well during operation. In terms of price comparison, FS N8500-48B6C dominates the advantage. For all those features offered, FS N8500-48B6C has an MSRP of US$ 6,199, whereas Edgecore AS7312-54XS costs US$7,152. They both are ideal for high-performance data centers, if you want to buy a cost-effective with future requirements ensured, FS N8500-48B6C 25G bare metal switch will be your best choice.


Bare metal switch indeed makes our choice flexible and closer to our needs. FS N8500-48B6C 25G bare metal switch belongs to FS N-series switches designed for next-generation metro, data center and enterprise network applications. In addition, FS also offers S-series switches such as 1gbe switch, 10gbe switch, 40gbe switch, 100gbe switch. They are all designed to achieve flexibility, efficiency and cost effectiveness in data center networks. Just visit FS.COM, you’ll be surprised by all those cost-effective products.

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Overview and What Makes Cumulus Linux Stand Out?

The trend of virtualization and automation in the network along with the growing numbers of network users are leading dramatic changes in network infrastructure. The application of locking and proprietary legacy networks has changed. A trend of choosing applications, operating systems, and hardware prevails in modern data centers. Under such circumstances, an operating system called Cumulus Linux is designed to provide an open platform for a faster, easier and affordable network.

altOverview and What Makes Cumulus Linux Stand Out?

What Is Cumulus Linux?

Cumulus Network seized the opportunity from this trend and produced a powerful open network operating system named Cumulus Linux. Cumulus Linux based on Debian Jessie is the first native Linux network operating system for the networking industry, which runs on white-box switches, such as Gigabit Ethernet switch, 10gb switch etc.. It allows consumers to automate, customize and scale with web-scale principles such as the world’s largest data centers. This open approach enables choice with the best hardware, software, application, network architectures, and no vendor lock-in. Cumulus Linux is a solution that allows you to cost-effectively build and efficiently operate your network, just like the world’s largest data center operators, unlocking vertical network stacks.

What Makes Cumulus Linux Stand Out?

Build for automation, scalability, and flexibility, Cumulus Linux is gradually accepted by the public and offers a compelling set of benefits for network engineering and operations team.

Network Administration

Cumulus Linux leverages traditional Linux and networking tools. It can automatically discover network devices and provides advanced troubleshooting with tools such as Cumulus Linux’s prescriptive topology manager for topology consistency against a topology graph.

Network Operation

Cumulus Linux can fully automatic self-configuring, alerts and integration of maps and monitoring data via SNMP with real-time animated topology visualization.

Network Maintenance

Cumulus Linux can express complex logic for alert conditions incorporating dependencies and correlations between metrics. It can generate customizable performance and availability reports on Vlans, network switch ports, subnets, protocols and more.

Network Provisioning

Cumulus Linux allows zero-touch installation and provisioning to simplify operations. It uses embedded Python scripting engine and SQL like query syntax for deep data analysis and capacity forecasting.

Network Efficiency

Cumulus Linux allows consumers to choose compatible hardware and chain control depending on their needs and budgets. By adopting Linux principles for networking, consumers have achieved operational efficiency by 95% and reduced TCO by up to 60%. Therefore, with the help of Cumulus Linux, a simpler, scalable, and faster deployment network can be built.

How Do You Configure a Cumulus Device?

There are three simple ways to configure Cumulus Linux. One is to use a bash prompt which runs the Cumulus Linux. The other is to install Chef, Puppet or CF engine and then use your DevOps pipeline to configure the network devices. Or you can choose to use ONIE (Open Network Install Environment) with local HTTP discovery. But you have to be aware that If your host (laptop or server) is IPv6-enabled, make sure your host is running a web server. If the host is IPv4-enabled, make sure your host is running DHCP in addition to a web server.

What’s the Challenge Ahead?

The networking industry has long believed that the integration of network hardware and software is critical to network speed and reliability. But as technology evolved, it proves that hardware and software work better when they are developed independently. The advantages include faster product development and freedom from vendor lock-in. However, there is no final conclusion about the robustness of network support and the viability of switching suppliers. Cumulus Network says it will support its own software and the third-party hardware on which it runs, and will troubleshoot itself to provide valuable use cases for openness. But on the negative side, the product line offers limited hardware choices. The company requires customers to manage their network infrastructure with tools like Chef, Puppet and the Bash shell. For customers who are not familiar with these tools have to weigh these pros and cons when they are ready to transition to a separate network environment.


Cumulus Linux can run multiple network paths without the needs for multiple switches and offer traffic isolation and network segmentation for multiple devices. It’s the best choice for network flexibility and innovation. Although there are still some challenges on the road ahead, Cumulus Network will continue to find ways to solve the problems and create a better network environment.

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Cisco SFP+ Modules or 3rd Party SFP+ Modules, Which Is Better?

In order to cater to the development of interface technology, SFP+ module has been introduced to provide a perfect solution with high port density and low cost. SFP+ module is an upgrade version of SFP module which stands for a small form-factor pluggable module. There are many different brands of SFP+ on the market, such as Cisco, HP, Juniper, Brocade, FS, etc.. Among these brands, Cisco is favored by most people. However, with the rising of 3rd party vendors, modules produced by the 3rd party have gone popular with their lower price and good quality. But the doubts and praises around them have never stopped. This article will help you compare all aspects of the products and help to choose Cisco SFP+ modules or 3rd party SFP+ modules.

altCisco SFP+ Modules or 3rd Party SFP+ Modules, Which Is Better?

Cisco or 3rd Party SFP+ Modules: What’s the Difference?

As we know, Cisco provides reliable SFP+ modules, while 3rd party also offers various SFP+ modules. So what’s the difference between them?


The biggest difference between Cisco SFP+ modules or 3rd party SFP+ modules is the manufacturer. In fact, there are only a few qualified manufacturers. They supply all the raw components for all the transceivers on the market. To be honest, Cisco does not produce its own SFP+ modules or SFP fibers. Cisco is known to purchase optical transceivers from its suppliers who code and label for Cisco and then sell the transceivers to consumers. In this way, most 3rd party compatible modules are built and assembled in the same factory as Cisco. Above all, SFP+ modules are produced according to strict standards of MSA (Multi-Source Agreement), which determines the performance of the modules. Therefore, 3rd party SFP+ modules can be as good as Cisco SFP+ modules.


The compatibility of SFP+ modules is controlled by OEM software codes embedded in the transceiver. Cisco SFP+ modules are not encouraged to use in other brands equipment because codes from different vendors might be unmatched. However, a good 3rd party vendor can make multi-coded compatible transceivers that can support different equipment. Taking FS.COM as an example, FS.COM provides a range of SFP+ transceivers that compatible with the mainstream brands on the market, such as Cisco, HP, Juniper, Brocade, Dell, Extreme, H3C, Arista, Huawei, Intel, IBM etc.. The compatibility and durability of the modules are strictly tested and controlled to ensure product reliability. So there is no need to worry that the 3rd party modules you bought will be incompatible with your devices.

Future Demands

As we know that the data center often accommodates tens of thousands of devices. With your network system grows, it’s hard to connect SFP+ modules from different vendors. In this case, the function of 3rd party vendors reveals. 3rd party vendors can provide various compatible SFP+ modules to satisfy all your needs. Whereas Cisco SFP+ modules are not encouraged to use in other brands, even some of its own Cisco switches. Because different Cisco switches have distinct requirements for codes and hardware, you have to buy the specific one. In this case, Cisco modules are not that supportive for your future demands.


It’s not surprising that Cisco SFP+ modules have a higher price over 3rd party SFP+ modules. Take a 10GBASE-SR SFP+ for example, a Cisco 10GBASE-SR SFP+ sells for $691, but a 3rd party vendor FS.COM sells the same product just for $16. Unbelievable, right? It’s not reasonable for consumers to pay extra money just for a brand logo.

Why Are Cisco SFP+ Modules More Expensive?

If the SFP+ modules are the same, why is a Cisco SFP+ module more expensive than a 3rd party one? There are two main reasons for that. The first reason is that Cisco claims that it has a higher quality than others and it has tested every SFP+ module to ensure the performance. But actually many transceiver manufacturers can do the test now. The other reason is the brand effect. It takes a cost to build a brand, but the benefits brought by the brand is also obvious. Cisco is a large equipment manufacturer with its own unique brand advantages, known by a number of consumers. It makes sense that Cisco has higher product prices.

Is the Quality of 3rd Party Guaranteed?

Certainly. The optical transceiver module is standardized by SFP MSA, which means there is no big difference between Cisco and 3rd party optical transceivers due to the same rules and standards. In addition, if the equipment is defective, the supplier is obliged to fulfill the warranty. The 3rd party has a comprehensive warranty policy to provide technical support and protection to consumers. Although Cisco claims that adding 3rd party modules does not void the warranty unless problems are caused by 3rd party modules. In general, it’s unlikely that SFP+ modules will induce damages to the slot itself. The statement sounds more like a self-interest protection.


Excellent 3rd party vendors have proved themselves with good quality and reputation over the years. If you have found a reliable 3rd party vendor, choosing between high price Cisco SFP+ modules and cost-effective 3rd party SFP+ modules is not difficult. FS.COM is a professional optical transceiver manufacturer that provides a full selection of major brands’ compatible transceiver modules with strict tests and high quality. Along with the support of large inventory and efficient delivery, FS.COM can certainly meet the needs of your network.

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Cisco Single Mode SFP VS Cisco Multimode SFP

SFP (shorts for Small Form-Factor Pluggable) is a compact, hot-pluggable transceiver used for both telecommunication and data communications applications. It interfaces to motherboard, router, switch or optical media converter. There are two types of SFP, single mode SFP and multimode SFP. And this articles will focus on Cisco SFP  and make a comparison of Cisco single mode SFP and Cisco multimode SFP.

alt Cisco Single Mode SFP

What Is Cisco Single Mode SFP?

Cisco single mode SFP works over single mode fiber whose typical core diameter is 9µm. And the cladding diameter of a single mode fiber is 125µm. Cisco single mode SFP operates mainly at 1310nm and 1550nm wavelengths and is used in long-haul transmission environments of 2km, 10km, 40km, 60km, 80km, and 120km. Cisco single mode SFP consists of 1000BASE-EX SFP, 1000BASE-ZX SFP, 1000BASE-BX10-D SFP, 1000BASE-BX10-U SFP, and 1000BASE-LX/LH SFP. For detailed information, please check the chart below.

Cisco Single Mode SFP Part Number Description
1000BASE-EX SFP GLC-EX-SMD Operates on single mode fiber over a wavelength of 1310nm for 40km
1000BASE-EX SFP GLC-EX-SM1550-40 operates on single mode fiber over a wavelength of 1550nm for 40km
1000BASE-ZX SFP GLC-ZX-SM/GLC-ZX-SMD/GLC-ZX-SM-RGD Operates on single mode fiber over a wavelength of 1550nm for 80km
1000BASE-BX10-D SFP GLC-BX-10D Operates on single mode fiber over a wavelength of 1550nm for 10km
1000BASE-BX10-U SFP GLC-BX-10U Operates on single mode fiber over a wavelength of 1310nm for 10km
1000BASE-LX/LH SFP GLC-LX-SM-RGD/GLC-LH-SM/GLC-LH-SMD Operates on single mode fiber over a wavelength of 1310nm for 10km
1000BASE-LX/LH SFP GLC-LH-SM-20 Operates on single mode fiber over a wavelength of 1310nm for 20km

What Is Cisco Multimode SFP?

Cisco multimode SFP works over multimode fiber with the core diameter of 50 µm and 62.5 µm, and the cladding diameter is 125µm as well. The common multimode SFP operates at 850nm wavelength and is only used for short distance transmission of 100m and 500m. For detailed information, please check the chart below.

Cisco Single Mode SFP Part Number Description
1000BASE-SX SFP GLC-SX-MMD/GLC-SX-MM-RGD/GLC-SX-MM Operates on multimode fiber over a wavelength of 850nm for 550m
1000BASE-LX/LH SFP SFP-GE-L/GLC-LX-SM-RGD/GLC-LH-SM/GLC-LH-SMD Operates on multimode fiber over a wavelength of 1310nm for 550m

Cisco Single Mode SFP VS Cisco Multimode SFP

Cisco single mode  and multimode SFP modules can both server for transmitting and receiving optical signals and facilitate communication. However, the differences between them are also apparent. Here we will compare them from several aspects.

Connected Fibers

Cisco single mode SFP will work with single mode fiber in order to perform both transmission and reception of data. Whereas Cisco multimode SFP will work with multimode fiber to provide higher speed at shorter distance.

Transmission Distance

Cisco single mode SFP can support distance value as high as 80km or even 120km and mostly used in long distances (up to 10km) transmission environment. Whereas Cisco multimode SFP supports distance up to 550m, more used in a small area or within the building.

Supported Wavelength

Cisco single mode SFP works mainly on 1310nm and 1550nm wavelength, while Cisco multimode SFP works mainly on 850nm wavelength.

Preferential Usage

Cisco single mode SFP is mostly required on WAN connectivity. Whereas Cisco multimode SFP is used inside LAN for the switch, router and server connectivity inside building or data center.


Generally speaking, Cisco single mode SFP is costly and Cisco multimode SFP is cheaper. That’s because Cisco single mode SFP requires a laser source for transmission and it typically uses a laser diode (LD) as the light source, which is expensive. While Cisco multimode SFP uses a light emitting diode (LED) as the light source.


Now we learn a lot about Cisco single mode SFP and multimode SFP. Before you choose the SFP transceiver, you have to confirm the transmission distance and the wavelength you need and also the cables you already have. Remember that single mode and multimode are not interchangeable. So you have to take into account your actual situation and budget. To save more, you can choose a compatible transceiver module from FS.COM to match all your devices without sacrificing any quality or reliability but only at a lower cost. FS.COM offers various SFPs with a great offer that may be a good choice for you.

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Single Mode vs Multimode Fiber: What’s the Difference?

Comparing Single Mode and Multimode Fibers From Distance, Speed, and Wavelength

An optical fiber is a way to transmit light between the two ends of the fiber and is widely used in fiber optic cable communications. In general, there are two kinds of optical fibers: single mode fiber and multimode fiber. As the increasing integration of computers and mobile devices, the demand for optical fiber also grows. It’s important to make the right choice between single mode fiber and multimode fiber for your network. Therefore, this article will compare single mode and multimode fibers from distance, speed, and wavelength to help you to select the one suits you best.

alt Single Mode and Multimode Fibers

What Is Single mode Fiber?

A single mode fiber typically has a core size of less than 10 µm, which allows only one code or ray of light transmission wavelength up to 1310nm or 1550nm. When light passes through the core of a single mode fiber, the small size of the core reduces light reflections. Therefore it lowers fiber attenuation and increases the distance that signals can travel and preserve signal quality. Whether single mode fiber operates at 100 Mbit/s or 1 Gbit/s data rates, the transmission distance can reach to at least 5km. Thus it’s commonly used for long distance and higher bandwidth applications.

What Is Multimode Fiber?

A multimode fiber usually has a larger core size around 62.5 µm or 50 µm, which enables multiple light modes to be propagated at a given time. The core’s larger size provides more light reflections, higher dispersion, higher attenuation rate and allows more data to travel across at the cost of reducing signal quality. The maximum transmission distance of multimode fiber is about 550m at a speed of 10Git/s. It can transmit farther at lower data rates. Since signal quality drops as distance increases, multimode fiber is generally used for short-distance communications across local area networks (LANs).

Comparison of Single Mode and Multimode Fibers

In the previous section, we introduced the definitions of single mode and multimode fibers. Since single mode and multimode fibers are widely used in various fields. Therefore we will compare them from distance, speed, and wavelength so that you can understand them in depth and make the right choice for your solution.

Fiber Distance

Single mode fiber has a much longer maximum distance than multimode fiber. Single mode fiber can go as far as 10km, 40km, 80km, and even farther. While multimode fiber generally can go as far as 2km. Thus single mode fiber is ideal for long-haul application, while multimode fiber is a good choice for short-haul application. But to remember that the price rises as the distance grows.

Fiber Speed

Single mode fiber and multimode fiber are capable of achieving the same speed from 1Gbps to 100Gbps. Since the transmission radius of single mode fiber is smaller than that of multimode fiber, a single mode fiber can only be propagated by one beam during signal transmission. So that the scattering phenomenon will not be caused, and a long distance can be transmitted without deformation. Therefore, single mode fiber can support distance value from 5km to 120km, whereas multimode fiber can support distance from 100m to 550m.

Fiber Wavelength

Single mode fiber used in telecommunications typically operates at a wavelength of 1310nm or 1550nm. While the large core size of multimode fiber simplifies connections and allows lower-cost electronics to operate, multimode fiber can operate at 850nm and 1310nm wavelength.


In a data center, single mode fiber is more suitable for a large enterprise with longer distance requirement, while multimode fiber is an optimal choice for companies within walking distance. Your choice depends on the needs and considerations of your network. In addition to the fibers mentioned above, FS.COM also provides a series of single mode and multimode fiber patch cords as a cost-effective alternative to satisfy your needs such as LC/SC/FC/ST fiber patch cables, MTP/MPO fiber cables, ultra-high density cables. Welcome to visit FS.COM to find the most satisfying fibers.

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Single Mode vs Multimode Fiber: What’s the Difference?

Why Do We Need Horizontal and Vertical Cable Managers?

With the increasing numbers of cable counts and devices, cable management in data centers is becoming more and more important. Can you imagine that after installing all network devices in the rack, you’re ready to have a break with the joy of success, and you should find bunches of cables everywhere? To make it worse, if one of the cables is broken, you have to exam every cable in a mess to find the culprit. Wouldn’t it drive you crazy? Fortunately, there are many excellent products available on the market that can help run cables under orderly and efficient management. This article will introduce horizontal and vertical cable managers.

What Is Horizontal Cable Manager?

Horizontal cable manager can manage almost all kinds of cables such as fibers, coaxes, patch cables, copper wiring, jumpers and so on to ensure rack cables are well organized and protected. It is commonly used to manage cables on front racks and used with patch panels or rack mount enclosures to provide cables a safe and organized pathway from switch ports into the vertical cable manager. Horizontal cable manager is designed with various forms such as D-rings, finger duct, brush strip, lacing bar and end ring, which can be assembled randomly to simplify cabling efficiently.

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What Is Vertical Cable Manager?

Vertical cable manager provides a vertical pathway for a large number of cables from switches to patch panels in the rack system. It utilizes extra space to secure, bundle and route the cables at both sides of the racks, cabinets, and enclosures. The most popular vertical cable managers are single D-ring vertical cable manager, 5U plastic vertical cable manager with bend radius finger, and 45U 4.9″ wide plastic vertical cable manager. All of those vertical cable managers help provide proper bend radius support for cables and supply users with a neat and organized cabling system.

alt Why Do We Need Horizontal and Vertical Cable Managers?

Advantages of Horizontal and Vertical Cable Managers

Horizontal and vertical cable managers have its own features, here we list their advantages separately for your reference.

Advantages of Horizontal Cable Manager

Minimize Downtime & Promote Growth

Horizontal cable manager can run cables orderly and efficiently, prevent cables from tangling together. Therefore, the technician can easily identify and access the error and fix it right away, which minimizes downtime. And we can add new ports and cables and track their locations without worrying about causing problems.

Extend Longevity

As rack cables properly installed, the risk of excessive bending or subjecting cables to heat sources or sharp edges minimizes. Therefore it extends the longevity of cables.

Ensure Efficient Running

Since cables neatly collected, there is less risk of airflow obstruction. As fans and air conditioning units do not have to work overtime to cool equipment, it ensures data center runs efficiently.

Advantages of Vertical Cable Manager

Reduce Signal Interference

Vertical cable manager separates power and data cables within the racks, which greatly reduce the chance for crosstalk and interference and help enhance system performance.

Avoid Unnecessary Cable Damage

Vertical cable manager helps maintain cable bend radius within the ranges specified for the type of cable being used. Therefore it reduces the chance of being damaged.

Improve Cooling and Airflow

Vertical cable manager can eliminate the airflow blockage and enhance the cooling efficiency within the rack.

Reduce Costs

Vertical cable manager can be used with angled patch panel directly, which reduces the usage of horizontal cable management panels and cost.

Solutions for Horizontal and Vertical Cable Managers

Horizontal Cable Managers Solutions


Horizontal Cable Manager with D-Ring

Horizontal cable manager with D-ring is an open-access management tool, which means the D-rings offer an “open” and efficient way to manage cables on the rack. Besides, the design of D-rings provides great flexibility for users to add, move or change components and cable in the system. You can combine horizontal cable manager with D-ring with various cable management products for different applications.

Horizontal Cable Manager with Finger Dust

Horizontal cable manager with finger duct provides a series of fingers and pass-through holes for routing rack cables and reducing cable strains. Moreover, it features a detachable top cover that provides flexibility for users to add or remove cables. Horizontal cable manager with finger duct is typically used with server racks and cabinets, structured wiring closets to keep cables clean and orderly.

Horizontal Cable Manager with Brush Strip

Horizontal cable manager with brush strip is usually made of steel and nylon bristles. It allows cables to pass from the front to the rear of the rack, facilitating proper airflow through the rack and preventing dust and dirt from entering and exiting the rack.

Vertical Cable Managers Solutions


Vertical Cable Manager with D-Ring

Vertical Cable Manager with D-ring is designed with a standard EIA hole spacing which allows products to be mounted to any standard rack. It also features with a flexible arm to provide an open access to allow installation of complete cable bundles. Vertical cable manager with D-ring can prevent sharp edges and occupies high capacity of cables, which makes it popular among customers.

Vertical Cable Manager with Bend Radius Finger

Vertical cable manager with bend radius finger is lightweight and can be mounted in specific areas of the rack to reach any height(U), making it an alternative of higher vertical cable management. It provides extra-deep cable management capacity for applications required large Cat5e/Cat6/Cat6a cable bundles or thick cables.

45U Single Sided Vertical Cable Manager

45U single sided vertical cable manager equips with a user-friendly cover to protest cables from dust and damage. It’s designed with smooth oval holes to provide easy front-to-back cable routing and with flexible fingers to ensure optimum cable radius. It’s usually installed on open racks to organize and protect cables on the front of the rack without taking up the space of racks.


Cable manager is essential for data centers. An improper cable management can easily lead to a series of problems like data transmission errors and performance issues as well as system downtime. Horizontal and vertical cable managers are two important tools used to solve cable managing problems. If you have problems with this, do not hesitate to visit FS.COM.

Related Articles:
Horizontal Cable Management VS Vertical Cable Management: Which to Choose?
Selecting the Right Horizontal Cable Manager
Proper Vertical Rack Cable Management Solutions

FS FHD Fiber Optic Panels With Exquisite Workmanship

With the raising awareness of bandwidth and storage requirement in data centers and SAN (Storage Area Networking) environments, fiber companies are sparing no efforts to produce an ideal product to meet people’s needs. In this case, FS self-developed FHD series products to provide a space-saving and easy-to-manage fiber cabling situation. Let’s see FS FHD fiber optic panels, those with exquisite workmanship and help maximize the amount of connections and provide an affordable, compact solution for your network.

What Are FS FHD Fiber Optic Panels?

FS FHD fiber optic panels also named FS FHD fiber adapter panels (FAPs), which use zirconia ceramic split sleeves to fit specific network requirements. FHD fiber optic panels enable a quick and flexible fiber optic patch panel connections as they can snap into the enclosures easily. They are used for patching fiber cable to the termination enclosure like rack mount fiber cabinets, rack mount fiber shelf and fiber wall cabinets.

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Types of FS FHD Fiber Optic Panels

FS FHD fiber optic panels are with different types, such as LC, SC, MTP fiber optic panels, multimedia modular panels and blank panels. Among those panels, LC, SC MTP fiber optic panels are mostly used ones. LC/SC/MTP single mode fiber adapter panels with 12 ports are very mated with 1U horizontal cable manager, they are available to install as required. You can mount the panels in FS FHD series rack or wall mount enclosures for additional flexibility and larger network system. Meanwhile multimedia modular panels allow customization of installation for applications requiring integration of fiber optic cables and copper cables. Blank fiber adapter panels reserve fiber adapter panel space for future use.

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Comparisons of FS FHD Fiber Optic Panels

Here we list the detailed information of the three main fiber optic panels for your better understanding. You can check out the chart below.

Adapter Type LC FAPs SC FAPs MTP FAPs
Number of Adapters 12 6 8/12
Fiber Count 24 Fibers 12 Fibers /
Fiber Mode Single Mode: OS2 9/125μm

Multimode: OM4/OM3 50/125μm

Single Mode: OS2 9/125μm

Multimode: OM4/OM3 50/125μm

Single Mode: OS2 9/125μm

Multimode: OM4/OM3 50/125μm

Adapter Color Blue (SM UPC), Green (SM APC), Aqua (OM3/OM4) Blue (SM UPC), Green (SM APC), Aqua (OM3/OM4)

Charcoal Gray (Key up-Key up)

Black (Key up-Key down)

Dimensions (HxW) 1.38”x4.29” (35x109mm) 1.38”x4.29” (35x109mm) 1.38”x4.29” (35x109mm)
Application Matching for FHD Series Enclosures FHD Series Rack and Wall Mount Enclosures Matching for FHD Series Enclosures

Selection Guides

FS FHD fiber optic panels are used with FHD rack mount and wall mount enclosures. FS FHD series provides a comprehensive line of solutions for fiber optic cabling. The combination of fiber enclosure and fiber optic panels can deliver the easier MACs and the flexibility to migrate to higher data speeds. Here we list three solutions for your reference.

FHD-1UFCE+4 FHD fiber adapter panels

FHD-1UFCE is an unloaded 1RU rack mount fiber patch panel that can support 4 FHD fiber adapter panels up to 96 fibers. The combination between FHD-1UFCE and 4 FHD fiber adapter panels can provide a complete system solution for connectivity by installing either slack spools or splice trays inside the fiber patch panel.

altFS FHD Fiber Optic Panels With Exquisite Workmanship

FHD-2UFCE+8 FHD fiber adapter panels

FHD-2UFCE is an unloaded 2RU rack mount fiber patch panel that can support 8 FHD fiber adapter panels up to 192 fibers. The combination between FHD-2UFCE and 8 FHD fiber adapter panels can provide higher patch field density in fewer server rack units saving valuable space by installing either slack spools or splice trays inside the fiber patch panel.

altFS FHD Fiber Optic Panels With Exquisite Workmanship

FHD-4UFCE+12 FHD fiber adapter panels

FHD-4UFCE is an unloaded 4RU rack mount fiber patch panel that can support 12 FHD fiber adapter panels up to 228 fibers. It assures flexibility and ease of network deployment and moves, adds, and changes.

altFS FHD Fiber Optic Panels With Exquisite Workmanship


FS high density FHD fiber optic panels preloaded with fiber adapters that serves as the intermediate connection between the backbone and your patch cable, provides an affordable, compact solution for your network. In addition to FHD fiber optic panels, FS also offers FHD fiber enclosures, fiber patch panels and fiber cassettes for your assembly to free you from network problems. For more information about FHD fiber cabling solutions, you can visit FS.COM. I’m sure your problems will soon be solved.

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