Switch Stacking vs Uplink: Which Is Better for Connecting Switches?

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Networks will eventually grow to the point that more switches should be integrated to increase port density and boost bandwidth. Then, should I buy switches with more ports or just connecting switch via stacking or uplink. Obviously, the latter makes more sense. Switch stacking vs uplink – is there any difference between them? In which case we should choose switch stacking over uplink switch? This article tries to shed some light on the pros and cons of switch stacking vs uplink, and help you to make the right decision.

What Is Switch Stacking?

Let’s start from switch stacking. By stacking switches together, you are allowed to manage multiple switches as a single entity, but with typically increased bandwidth between switches. Switch stacking can be done by connecting switch backplane via a stacking cable – it is a cable specified for stacking switch that comes with the switch. Staking switch makes it very convenient and easy to configure multiple switches from a single console – stacking can be seen as a single entity, you manage one device rather than each stack member, and to manage several stacking switches with only one IP address. Which significantly enhances network efficiency while simplifies management.

switch stacking vs uplink

Generally, a stackable switch has a dedicated ports for stacking via special cable or module, which brings higher costs. However, some stack-capable switches are embeded with some uplink ports for stacking to minimize the cost, like these FS Gigabit stackable managed switch (S3800-24T4S) and gigabit stackable SFP managed switch (S3800-24F4S).

gigabit stackable managed switch

What Is Uplink Port on Network Switch?

An uplink port is a port on which transmit and receive are reversed, which is designed for inner-switch connection with a standard straight-through cable. Otherwise it would require a crossover cable where the transmit and receive are crossed in the cable rather than on the switch port. Plug the uplink port of one switch, for example, into the standard port of another switch cab help expand the network’s size. When connecting two devices, the uplink port on only one of them is used. If you connect two uplink ports with straight-through cable, the result is the same as using two conventional ports – makes the devices fail to communicate.

switch uplink

Switch Stacking vs Uplink: How to Choose?

Some may still hesitate when choosing switch stacking vs uplink. Simply put it, swtich stacking is a great fit for limited space deployment where flexibility trumps availability. Being a pay-as-you-grow model, switch stacking is attractive for users that need flexibility in their physical network and in the amount of needed traffic. It gives you the resilience to operate them as a part of a stack today, or as individual switch tomorrow. Besides, stacking offers more bandwidth while simplifies network management, proven as a more cost-effective alternative to chassis based higher-end switches. However, stacking are only for stackable switch in the same product family of the same vendor, and the connecting distance is limited by the length of stacking cable – often within wiring closet.

Switch uplink not only relieves you from having to use crossover cable between two standard Ethernet ports. It also offers a perfect fit for connecting switches from different product family or even different vendor, enabling much more flexibility to your infrastructure. Moreover, leveraging the standard Cat5e/Cat6 cable, switch uplink extends the linking distance up to 100 m. If your switches are located over 100 m, you can put another switch in between as the bridge. Compared switch stacking vs uplink, switch uplink only provides very limited bandwidth increase. In some cases, users can benefit from using both switch stacking and uplink.

Conclusion

Switch stacking vs uplink, as two critical methods to increase switch ports, has their own benefits and drawbacks. As always, the most important part is to determine what your requirements are. We have gone through both pros and cons of switch stacking vs uplink, wish it may help you to make a valid decision for your network.

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24-Port Managed PoE Switch: A Must-have for Your Network

The demand for network performance is expanding with frightened velocity. Sometimes the use of a “dump” unmanaged PoE switch fails to meet network administrator’s expectation to manage and monitor the system. Thus, even most small and medium sized businesses are moving to fully managed PoE switches. Experience from those who have dealt with 24-port managed PoE switches demonstrates that this is a journey well worth taking to optimize your network. This article will explore the benefits of using 24-port managed PoE switch.

24-port poe switch

24-Port PoE Switch: The Differences of Unmanaged vs Managed

To analyze the unsurpassed advantages of a 24-port PoE managed switch, we’d better start from scratch – the differences between unmanaged and managed 24-port PoE switch. One of the biggest differences is the level of manageability and control. While unmanaged switches have none, fully manages switches provide the greatest level of management and control. PoE managed Gigabit switch provide all the features of its unmanaged counterparts, and more. It offers the ability to configure, manage and monitor the LAN – setting the link speed of a port or disabling it entirely, or more complex like limiting bandwidth or grouping devices into VLANs. In a word, managed PoE switch opens a door for IT professionals to create a fully optimized network.

Managed-vs-unmanaged poe switch

What a 24-Port Managed PoE Switch Can Achieve?

24-port managed PoE switch has become a preferable option for enterprise networks, with dramatically decreased price, expanded feature sets and improved ease of use. It can optimize your network in the following ways:

  • Creates VLANs and limit access to specific devices, for example, a Gigabit managed PoE switch allows to secure the accounting staff from other departments or blocking Internet access to the production floor.
  • Use Layer 3 routing capability to link smaller networks into much larger business-wide networks.
  • Take advantage of Power over Ethernet (PoE), managed PoE network switch enables devices such as phones, security cameras, and Wireless access points (WAPs) to be connected on it.
  • Remotely monitor network performance, detect and repair network problems without having to physically inspect the switches and devices, or take the network out of service.
  • Enhance security controls. Managed PoE switch supports administrators visibility and control, enabling them to program each port individually. Which greatly contributes to expand the long-range flexibility.

When to Use a 24-port Managed PoE Switch?

Since a managed PoE switch can deliver so many flexibilities and scalabilities to a network, when should we introduce it to keep up with the growing business needs? If you need some of the following features, maybe it is the time to go with a managed PoE switch.

Demand for QoS: If you want to tailor your network traffic for QoS, redundancy, port speed, etc. And require more priority and reliability for certain computers, then get a managed switch. A 24-port managed poe switch will let you remotely disable the power on individual ports, which is useful in case you need to reboot a single AP and don’t want to get up from your chair.

Superior Management of Network: It is nice to have management features when you need them: things like VLANs, port security, port monitoring and other functions becomes even useful when business grows. A 24-port managed PoE  switch allows you to see what’s going on in the switch, and what is connected to each port. You can look at error statistics for a port to know if there is a cabling or device problem, you can remotely see which ports are actively in use, and you can also mirror ports to monitor traffic.

VLAN and VoIP Support: Ever want to have Wifi deployment and have a guest network? VLANs can help with this. It is much easier to go with a managed switch if you are going to have multiple subnets/VLANs or need to configure and manage specific ports etc. Moreover, Anything to do with VoIP configuration should always involve managed PoE switches.

24-port Managed PoE Switch Recommendation

There are many full managed switches available today, and some are specifically geared toward small and medium-size businesses. Here we recommend this FS 24-port Gigabit PoE managed switch to you: it offers 24×Gigabit PoE+ ports, 4 SFP ports, a 52 Gbps switching capacity, and a PoE power budget of 600 watts. This 24-port Gigabit managed PoE switch recognizes surveillance, IP Phone, IP Camera or wireless applications, and supplies the required amount of power automatically. The 600 watt PoE power budget enables full PoE power to every port, thus maximizing the number of PoE devices connected to the switch. With enterprise-class features, simplifies network monitoring and configuration, and solid management option, FS 24-port managed PoE switch has proven itself as an ideal solution for your network.

24-port managed poe switch

Conclusion

Managed PoE switch has become a better choice in the long run, if you ever anticipate advanced network features to meet business growth. And a 24-port managed PoE switch is the best fit for SMB network with its full configuration capability, advanced feature sets and improved security controls. 24-port PoE network switch is also considered the most future-proof option – enabling your business adequate space for growth that effectively bridges the connection to a high-speed data backbone.

Related Article: http://www.fiber-optic-solutions.com/power-consumption-24-port-poe-switch.html

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How to understand the power consumption of 24-port PoE switch?

Power over Ethernet (PoE) switch dramatically cuts network cost while improves power efficiency – with which network managers can get simultaneous access to both power and data over a single Ethernet cable. PoE switches come in a host of flavors, such as 8/12/24/48-port PoE switch, or unmanaged and managed PoE switch. 24-port PoE switch is considered as a cost-effective alternative for SMB networks, for it enables enough output capacity for SMB network flow with relatively lower power consumption. As people tend to be cautious about power consumption of devices, here we provide some indication on 24-port switch power consumption.

What Is PoE Switch Power Consumption?

Network administrators nowadays are more inclined to incorporate PoE switch into their network, anticipating to reduce the hassle of connecting equipment to a power supply. Moreover, PoE switch also significantly decreases the number of cable needed and is ideal for network upgrade. To understand 24-port PoE network switch power consumption, let’s first get some insight into two most relevant PoE standards denoting power output: 802.3af and 802.3at. The older 802.3af provides 15.4 watts of power, serving as the standard for PoE switch, whereas the newer 802.3at standard – known as PoE+, enables up to 30 watts of power. But as we plug cable into PoE port, power losses occurs, and the level of loss heavily depends on the cable length – the longer the cable is, the more the loss can be. So the minimum output power guaranteed for PoE switch is 12.95 watts, and 25.5 watts for PoE+ switch.

24-port poe switch power consumption

24-port Switch Power Consumption: How Many Devices Can I Connect to My Switch?

To better illustrate the answer, we should first obtain some knowledge about two essential components for PoE switch:

Power Sourcing Equipment (PSE): like switches or hubs, it comes with a predetermined Total PoE Budget.

Powered Devices (PDs): these are elements connected to PoE switch, such as IP cameras, WAPs and VoIPs. They also come with a variety of different wattage demands. Note that the total sum of their demands must be less than the PSE’s total PoE budget.

So, we’ve made things clear, to define how many devices you can link to a 24-port Gigabit PoE switch, you should consider at least two factors: how much power your 24-port Gigabit PoE network switch can provide, and how much power your PoE-enabled devices need.

For a 24-port PoE switch you should look for their “PoE Budget” or “Power Dedicated to PoE” value, which is the total amount of power the switch has that can be divided between PoE devices connected to it. For instance, a 24-port PoE switch based on 802.3af has a Total PoE Budget of 300 watts. When used at full capacity, the maximum power consumption per port would be 300/24 ports or 12.5 watts per port. Since 802.af PDs offers maximum 15.4 watts of power, the remaining power will stay as unused and will not overpower PDs. To calculate how many PoE-enabled devices the 24-port PoE switch supports, simply divide the total PoE budget ( in this case 300 watts ) by 15.4 watts.

FS 24-port PoE Switch: The Answer to Build Reliable Enterprise Network

Among the dazzling array of 24-port PoE switches out there on the market, FS 24-port PoE managed switch is a managed Gigabit switch that offers an economical option for enterprise, midmarket and brand office networks. With 24 Gigabit Ethernet RJ45 ports and 4 SFP ports (2 combo ports and 2 SFP ports), and advanced Layer 2+ feature and 802.3af compliant, this 24-port PoE switch enables you a secured, sustainable and optimized network performance, simplifying the installation and power management of network devices such as WAPs, VoIP phones and surveillance. Besides, FS 24-port PoE managed switch also greatly increases energy efficiency to meet various network requirements.

24-port poe switch

Conclusion

24-port PoE switch, as a cost-effective choice for simplifying network deployment and maintenance, is gaining in much popularity these days. When referring to the power consumption of this device, just take this two-step guidance: figure out the watts each PoE enabled device will use, then multiple the watts used by the amount of devices for your total watts. Remember that the total watts should never exceed the total power budget of the 24-port PoE switch.

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12 Port Smart Managed Switch: More Productivity & Less Downtime for SMB

Although unmanaged switch presents a simple “plug and play” option for network administrators, it fails to meet the challenge created by the insatiable bandwidth demands. Managed switch, while has abundant advanced features for large professional networks, are far more cost-prohibitive for small- and medium-sized business (SMB) networks. Smart managed switch are somewhere in between, which has proven itself an affordable and feasible alternative to boost network performance, security and scalability for SMB. 12 port smart managed switch is the most pravalent variations on the market, so how can network benefit from deploying it? This article explains it in detail.

Smart Managed Switch for Powerful Network Performance

The proliferation of big data, virtualization and cloud-based services demands SMB networks to extend beyond simple reliability to higher speed and performance. Smart managed switch is purposely designed to address the bandwidth bottlenecks faced by SMB network – it is managed switch with very limited management functions. For a much lower price than a fully managed switch it provides a web interface (and usually no CLI access) and allow configuration of basic settings, such as VLANs, port-bandwidth and duplex. Additionally, smart switch supports more advanced functions like Access Control List (ACL) and Spanning Tree protocol (STP). On a large network you may use managed switches at the core and smart managed switches at the edge – it can make an excellent transition solution when the cost of a managed switch cannot be justified.

12-port-smart-managed-switch

What Makes a Good Smart Managed Switch?

While choosing a smart managed switch, it’s mostly about two things: budget and application. As there is an abundance of smart managed switch on the market with different features, FS 12 port smart managed switch S5800-8TF12S stands out by offering enhances reliability, simplicity and affordability for SMB neworks.

FS S5800-8TF12S 12 port smart managed switch offers 8-port 1000BASE-T/ SFP combo ports with 12-port 10GbE uplink, enabling superior network agility and easy network integration. The 1000BASE-T copper ports utilize RJ45 interfaces and support Gigabit speeds over CAT6 LAN cabling up to 100m, while the 1G fiber ports can be connected to other devices via SFP optical transceivers over single-mode or multimode fiber patch cable. This 12 port smart managed switch also supports hyper-converged infrastructure, which allows users to reap the promised benefits of scalable network performance, efficient management and simplified deployment.

12 port smart managed switch FS S5800-8TF12S

Significant Highlights of FS 12 Port Smart Managed Switch

FS S5800-8TF12S smart managed switch is designed to support a demanding and dynamic environment of SMB networks. With which, you can build a high-availability network that is fast, reliable, and offers redundancy to minimize downtime. The benefits of this smart managed switch are presented as following.

Affordable 10G network for SMB: To catch up the bandwidth requirement of rich network applications, SMBs are constantly facing increased expenditure. FS S5800-8TF12S 12 port smart managed switch is designed to overcome the challenge, which features 8-port 1000base-T/ SFP combo ports and 12 10G SFP+ uplink, offering additional resiliency for complicated deployments. The port design makes it the ideal choice for business looking for an affordable switch solution.

Smart management and simplified operations: This 12 port smart managed switch can be managed by Web interface, Telnet, SSH and SNMP, providing a good way to step into network management. With Lay2/3 switching capacity, FS S5800-8TF12S is able to function as an aggregation/access switch, making it the cost-effective switching solution for SMBs. Besides, the link aggregation features makes multiple ports behave like a single super-port for trunking and backbones, while the VLAN-enable helps to segment your network for performance and security.

Seamless integration: This 12 port smart managed switch comes with a combo design: 8 1000BASE-T RJ45 ports capable of connecting to existing CAT5 twisted-pair cables, and 8 1000BASE-X SFP ports for optical transceiver working on fiber. While the additional 4 10G SFP+ ports for 10G-enabled devices. This means it provides a more flexible solution for upstream or downstream server connections, making network administration easy.

Conclusion

Smart managed switch forms a solid foundation for high-performance and scalable network for SMBs, while enabling enough space to expand as your business grows. With FS S5800-8TF12S 12 port smart managed switch, 10-gigabit is made affordable and accessible. And owing to the backward compatibility of 10G, you can prepare your network for future growth and to embrace tomorrow’s bandwidth-intensive media applications. If you have high load networks or time critical applications, it’s time to consider FS 12 port smart managed switch!

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VMware NSX: Unleashing Your Data Center Potential

Network speed, agility along with security and availability are of top priority to every IT organization. Since application infrastructures lay the foundation for business operating and innovating, it is imperative for organizations to keep up with the advancement and shift in IT. The fact, however, is that network architectures based on hardware actually impede the ability of data center to unleashing its full potential – it fails to match the speed, agility or security of those running virtualized networking. VMware NSX takes the initiative to address the problem: it creates a network virtualization platform that enables IT to perform without compromises.

what does vmware nsx stand for

What Does VMware NSX Stand for?

Simply put it, VMware NSX is a network virtualization and security platform for software defined data center (SDDC). Which makes it possible to create entire networks in software with the functionality of switching, routing, load balancing and firewalling, and embeds them in the hypervisor layer, abstracted from the underlying physical hardware. In this case, it significantly simplifies network managements – instead of taking days or weeks provisioning, all network components can be provisioned in minutes, without the need to modify the application. NSX is proven as an ideal solution to achieve unprecedented levels of security at a speed that organization demands. Key features of VMware NSX are explained in the chart below.

Switching Enable logical layer 2 overlay extensions across routed (L3) fabric within and across data center boundaries. Support for VXLAN-based network overlays.
Routing Dynamic routing between virtual networks performed in a distributed manner in the hypervisor kernel, scale-out routing with active-active failover with physical routers. Static routing and dynamic routing protocols supported.
Distributed Firewalling Distributed stateful firewalling, embedded in the hypervisor kernel for up to 20Gbps of firewall capacity per hypervisor host. Support for Active Directory and actively monitoring. Additionally, NSX can also provide north-south firewall capability via NSX Edge.
Load Balancing L4-L7 load balancer with SSL offload and pass-through, server health checks, and APP Rules for programmability and traffic manipulation.

 

What Does VMware NSX Bring? More Than Cost-Saving

The challenge networks are consistently facing is to strengthen security while enhancing agility. Instead of purchasing extra network and security infrastructure, customers are more prefer to virtualize firewalls and implement micro-segmentation. Realizing virtualization with VMware NSX is found to be an ideal option for driving business benefits, in a way to enhance security, achieve IT automation and ensure application continuity. Moreover, VMware NSX also delivers numerous economic value as it saves significant capital expenditure on security appliances, reduces operational expenditures and enhance consistent network performance. Users can benefit from using NSX in a number of different ways:

vmware nsx benefit

  • Micro-Segmentation for security: VMware NSX abstracts security functions and embeds it into the hypervisor. Thus  delivers micro-segmentation and granular security to the individual workload, enabling a fundamentally more secure data center. Security policies travel with the workloads, independent of where workloads are in the network topology.
  • IT Automation to reduce Manual Errors: with VMware NSX, you are able to treat your physical network as a pool of transport capacity, with network and security services attached to workloads using a policy-driven approach. This automates networking operations and eliminates bottlenecks associated with hardware-based networks, while reduces the manual effort and cycle time for provisioning and managing the network.
  • Application continuity: VMware NSX abstracts networking from the underlying hardware and attaches networking and security policies to their associated workloads. Applications and data can reside and be accessible anywhere. Move workloads from one data center to another, or deploy them into a hybrid cloud environment.
  • Compliance: VMware NSX enables micro-segmentation and granular security of workloads in virtualized network, isolating sensitive systems and reducing both risk and scope of compliance.
VMware NSX vs Cisco ACI: What Is the Next

VMware NSX vs Cisco ACI, as two major players in the field of SDN and network virtualization, to decide which solution is right for data center has triggered lots of discussion among the industry. (a detailed explanations of Cisco ACI is in my former article ). Large enterprises are now reaping significant benefits by deploying SDN in the data center. Expect suggested to take your network requirements into consideration: if your business requires a dynamically provisioned, scalable and programmable network, ACI can be a sound choice. But if your business requires hypervisor-level micro-segmentation for VM-to-VM traffic, NSX is a solid option. If both are required by the business, the two can work together to meet those requirements.

vmware nsx vs cisco aci

Cisco ACI VMware NSX
Cisco ACI is an integrated solution that addresses the physical and virtual networks VMware NSX is a hypervisor overlay-based model
Automated Application Centric, policy driven framework VMware centric
Single pane of glass for managing application components with embedded security Only manages overlay. Underlay is managed separately
Every leaf is a gateway for physical and virtual application, no additional gateway or compute nodes required. Requires network gateways to talk to bare-metal applications and other network endpoints

 

Conclusion

VMware NSX integrates security, management, functionality, VM control, and a host of other network functions directly into your hypervisor. It successfully addresses the problem facing enterprises and businesses, providing secure, agile and segmented network that effectively enhances business efficiency and end user productivity. For networks demand for high-level security but don’t want to compromise speed, VMware NSX is the right choice for you.

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TP-Link 8-Port TL-SG1008D Desktop Switch

Ethernet switch usually acts as a hub that connects network devices and segments together while having the intelligence to send data where it needs to go. There are both managed and unmanaged switches. Managed switch as the names implies, can be programmed, while unmanaged switch simple allows Ethernet devices to communicate with one another. Besides, most fiber optic switches have 5, 8, 10, 24 or 48 ports. This article will introduce 5 TP-Link 8-Ports Desktop switch, and its cabling solutions.

8-Port Gigabit Desktop Switch TL-SG1008D

TL-SG1008D is the cost-effective TP-Link 8 port Desktop Gigabit Switch, which sells $24.99 . It has 8 Gigabit Auto-Negotiation RJ45 ports with switching capacity of 10Gbps. The TP-Link 8-Port desktop switch TL-SG1008D offer an easy path to make the transition to Gigabit Ethernet. Its auto-negotiation ports provide smart integration between 10Mbps, 100Mbps, and 1000Mbps hardware. With the innovative energy-efficient technology, the TL-SG1008D can save up to 75%/80% of the power consumption, making it an eco-friendly solution for your home or office network. Moreover, the auto features of TL-SG1008 unmanaged switch make installation plug and play and hassle-free.

TL-SG1008D

    • Easy to Use

TL-SG1008 unmanaged switch has no need to configure. Once setting up in the office or home network, this optical switch will provide you with a high-performance, low-cost, easy-to-use, seamless and standard upgrade to 1000Mbps network. Simply plug and play, an ordinary person can install it. Moreover, auto MDI/MDIX eliminates the need for crossover cables.

    • High-Performance

All 8 ports of desktop switch, featuring non-blocking switching architecture can provide large file transferring and downloading that are compatible with 10Mbps and 100Mbps Ethernet devices. Supports IEEE 802.3x ow control for Full Duplex mode and back pressure for Half Duplex mode.

  • Power down Idle Ports

When a computer or network equipment is off, the corresponding port of a traditional switch will continue to consume considerable amounts of power. The TL-SG1008D can automatically detect the link status of each port and reduce the power consumption of ports that are idle, resulting in up to an 80% reduction in power use. Another great thing about this network switch is that it offers a fanless design, meaning that you won’t hear anything annoying while you are working.

Copper Cabling for Unmanged Switch TL-SG1008D

The TL-SG1008D Switch is equipped with 8 10/100/1000Mbps Auto-Sensing RJ45 ports that is aimed towards budget oriented people. For the price of TL-SG1008D, this low-priced fanless switch will take care of all your intermediate networking needs without a hiccup. Besides you can directly buy the cost-effective copper cables from FS.COM, which will surely save a large sum of money.

ID Cable Type Boot Type Conductor Type Jacket Length
13825 Cat5e UTP Snageless Booted
24AWG, Stranded Bare Copper

 

PVC 0.15-60m/Custom
LSZH
22776 PVC
63764 Non Boot PVC
63634 Cat5e FTP Snageless Booted 26AWG, Stranded Bare Copper PVC
22346 Cat6 UTP Snageless Booted 24AWG, Stranded Bare Copper PVC
63088 LSZH
52067 Non Boot PVC
52173 Cat6 STP Snageless Booted 26AWG, Stranded Bare Copper PVC
23303 Cat6a STP Snageless Booted PVC 0.15-10m/Custom
23319 Snageless Booted LSZH
63503 Cat7 SSTP Snageless Booted 28AWG, Stranded Bare PVC 1-5m
63460 Slim Cat5e UTP Snageless Booted PVC
63118 Slim Cat6 UTP PVC

This is the simple layout of your network.

desktop Switch TL-SG1008D

Conclusion

Choosing the right optical switch is not an easy thing, either the experienced network installer, nor the completely inexperienced one. This article lists the main features of TL-SG1008D fanless switches, which will make sure people don’t have any issue choosing the best network switch in the market. Another great thing that we did to make things easier for you is making sure that you have abundance of options to choose from, from the highest end ones to the budget friendly ones, everything is basically in order for everyone.

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Reach to 40km Transmission – 100G QSFP28 ER4 Lite Module

Today’s world is undergoing an infrastructure transformation, which requires higher speed, greater scalability, higher performance, flexibility and reliability to meet the demands. Take 100G data rate as an example, the MSA groups keep driving development of 500m, 2km, 10km and 40km cost-effective 100G optics targeting modern data center. The 100G QSFP28 ER4-Lite standard was sampling several months ago, but now we are glad to announce that 100G QSFP28 ER4 modules are available in several vendors, e.g. FS.COM, Flexoptics, Smartoptics, etc. Today’s article will explain this long-reach 100G optics in detail.
100G QSFP28 ER4 Lite

How Does It Develop?

A heated topic—how to reach beyond 10km in 100G network aroused much attention in Reddit. For applications beyond 10km, 100GBASE-ER4 is proposed. This type of optical transceivers are manufactured by using a semiconductor amplifier (SOA) inside the transceiver to increase power budget. However, 100G ER4 is available in CFP and CFP2 form factors, but because of the large form factor and power consumption, they are seldom utilized in 100G long-reach applications. What’s worst, the newly launched 100G optical switches are commonly equipped with compact QSFP28 ports instead of larger CFP interface.

These extended reaches are preferring to use high-density 100G QSFP28 modules to maximum capacity and minimize space, power usage and maintenance cost. The CWDM4 MSA defined the first duplex low-cost 100G specification for 2km reaches based on a CWDM grid and using RS (528,514) FEC. Now the 4WDM MSA is extending the value proposition of the CWDM4 MSA and RS-FEC to define an even more cost-effective set of specifications for reaches from 10 to 40 km. Customers, particularly hyperscale cloud service providers and carriers, are looking for optimized solutions for up to 40 km.

What’s New with QSFP28 ER4-Lite Solution?

QSFP-100G-ER4L-S is designed for extended reach 100 Gigabit Ethernet link. The 100GBASE-ER4-Lite QSFP28 supports both 100GbE and OTU4 applications over single-mode fibers, and supports up to 40km with FEC and up to 30km without FEC. 100G QSFP28 ER4 Lite module consumes 4.5W power in max.

QSFP28 optics in 100G optical switch

The 100 Gigabit Ethernet signal is carried over four independent channels over four LAN-WDM wavelengths—1296nm, 1300nm, 1305nm, 1309nm. Multiplexing and demultiplexing of the four wavelengths are managed within the device. This QSFP28 was standardized by ITU-T as G.959.1 4L1-9D1F and 4-Wavelength WDM MSA Group. The following table displays the existing 100G QSFP28 MSA optics in detail.

Product Description Connector Type
QSFP-100G-SR4-S 100GBASE SR4 QSFP Transceiver, 100m over OM4 MMF MPO-12 (12 fibers)
QSFP-100G-LR4-S 100GBASE LR4 QSFP Transceiver, 0km over SMF LC
QSFP-100G-CWDM4-S 100GBASE CWDM4 QSFP Transceiver, 2km over SMF LC
QSFP-100G-PSM4-S 100GBASE PSM4 QSFP Transceiver, 500m over SMF MPO-12 (12 fibers)
QSFP-100G-ER4L-S 100GBASE ER4 Lite QSFP Transceiver, 25-40km over SMF LC

The 100G QSFP ER4-Lite module will interoperate with existing ER4 solutions in the field up to 30km. Foe example, QSFP100 ER4-Lite provides backward compatibility with Cisco’s CPAK ER4-Lite, whose reach is up to 25km, and with IEEE 100GBASE-ER4 standardized transceivers, such as CFP 100G ER4, up to 30km. It also interoperates with QSFP28 and CPAK IEEE 100GBASE-LR4 modules up to 10km.

40km Transmission With FEC Turn On

To reach 40km transmission, QSFP ER4 lite requires the use of FEC on the host platform. So what is FEC? Forward Error Correction (FEC) can turn a mediocre to bad BER into a good BER. Ethernet network usually uses FEC in 1000BASE-PX (EPON), 10GBASE-KR, 10GEPON, 10GBASE-T, DSL, etc. High end long haul telecom industry also requires FEC. P802.3ba links have limited power budgets and SNR, for e.g. eye safety reasons.

Conclusion

The migration of current network infrastructure to 100G systems is inevitable, and a growing number of enterprises require 100G client interface to extend up to 40km without the use of expensive optical amplifiers. Thus, the new ER4-Lite specification enables cost-effective 100G 40km pluggable solutions in compact QSFP28 transceivers that use Forward Error Correction (FEC) and APD-based receivers. Such evolution is very exciting for not only everyone involved in its development and construction, but also for all those who seek a simple, reliable and cost-effective solution to extend the reach of their networks, without expensive network upgrades. FS.COM is devoting to change the world with our cost-effective self-developed devices, if you are interested, please feel free to contact us.

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Using Pre-terminated Cat6 Cable For Signal Extension

Thanks to the complexity of the fiber optic installation and audio video system, the need for sending multiple signal types and control over long distances has increasingly become intense. Ethernet cables like Cat 5e, Cat 6 and Cat 7, is an indispensable component for home or small business. Nowadays most manufacturers will recommend the use of solid shielded Cat 6 cable with shielded connectors other than using the HDBASE-T chipset for signal extension. This type of cable can be terminated in the field or purchased in specific lengths already terminated. The following article provides a brief introduction to the reasons why we should use Pre-terminated Cat 6 cables for the signal extension.

Cat6 Pre-terminated Trunk cable

Figure 1 shows the UTP Cat6 cables, Pre-terminated trunk cables, FS optical switches, cable manager wire duct.

Brief Outlook: Cat 6 Over Cat5 Cable

Cat5 and Cat6 copper Ethernet cables are the commonly used types for 1G/10G networks. So, what is the benefit of using Cat 6 cable instead of Cat 5?

In short, Cat 5e is a basic wire for home network. It is typically 24 gauge and can run 10 Gigabit network for 328 ft. While Cat 6 was developed to have 10 Gigabit networks. The only problem is that these wires were limited to a range of 164 feet. Above this, their speed will drop to 1Gbqs.

Besides distance and speed, Cat 6 patch cable also has another important difference, it has tighter twists in the cables. This allows each pair of wires to have two-way communication with each other. Cat 5e has an occasional delay and a higher skew than Cat 6 does. This means that even though Cat 5 can run at a speed of a Gigabit, it will appear to be slower.

Pre-terminated Solution that Saves Time, Money and Space

With connectors terminated on each end, Pre-terminated copper bundles provide a time saving and customized solution for reliable and easy to install connectivity. The Pre-terminated cables are made to your exact specifications, so there will be no unused cables left to be stored. No cable waste, faster turnaround and no terminating on site which means less money spent on storage, labor and equipment.

6 jack to 6 jack Cat6 cables

Figure 2 shows 6 Jack to 6 Jack Pre-terminated Copper Trunk Cable.

  • Flexibility, Efficiency and Reliability

The Pre-terminated Cat 6 copper bundles can be supplied in any length up to 60m and both ends have an installed Cat 6A modular jack (UTP). The cable bundle is held together with Velcro wraps at meter intervals and is generally supplied with 6 cables & installed jacks in a bundle. Each end of the Pre-terminated can be easily installed into an unloaded 19 rack mount patch panel, floor distributor or wall outlet.

  • Less labor intensive

Cat 6 Pre-terminated copper bundles require less work on site as no technical skills are needed when installing and connecting the cabling infrastructure. Therefore, this solution eliminates the need for technicians to be on site terminating cable, since the Pre-terminated cables can be easily installed by routing and then loading the Pre-terminated directly into a patch panel.

  • Less Wastage

The installer in a lot of cases has to pay for his waste to be removed from site on many projects, especially if they include cable drums, more importantly the installer is purchasing a more accurate quantity of cable, they are buying by the meter and not by the drum, how many installers have their facilities cluttered up with odd lengths of cables in boxes hoping for a project that will use them up.

Pre-Terminated Cable Limitations

  • Specialty cables must be planned for and ordered in advance
  • Inflexible in field run situations
  • Not feasible for retrofit and upgrade projects

Conclusion

Just as anything else, careful planning and product selection will be the key to a successful installation. You must consider resolution, distance, signal type or types, and physical layout when choosing a signal extension product. FS.COM Pre-terminated Cat 6 copper bundles offer rapid deployment coupled with guaranteed performance. Please feel free to contact us if you are interested.

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Power Supply: POE Switch for IP Camera

PoE switch, as the previous article describes, provides power and data to all PoE devices, including IP cameras, NVR recorders, computers, and VoIP phones, etc, via a single Ethernet cable (Cat5, Cat5e or Cat6). A PoE switch normally comes with multiply ports to support more than one IP camera. There are two types of PoE standards, one is IEEE802.3at, the other is IEEE802.3af. The major difference between them is that PoE+ standard (IEEE802.3at) can pump out up to 30 W per port, whereas PoE standard (IEEE802.3af) can provide up to 15.4 W per port. The question is how to choose or select a best PoE switch for your IP cameras in the perspectives of power supply.

Understand IP Camera Power Needs
The power consumption of PoE IP cameras varies owing to different types e.g. pan-tilt zoom (PTZ) cameras, Dome IP cameras, CCTV cameras, IP cameras with IR illumination night vision, etc. PTZ camera could draw up to 20 Watts, while other IP camera could consumes as little as 3 or 4 Watts. Therefore, a PoE switch should be able to provide enough power for different types of IP camera via Cat 5 or Cat 6 cables.

IP surveillance camera

Although Security cameras, either CCTV cameras or PoE IP security cameras, are not energy-consuming as other gadgets like computers or TVs; they only need a very little electricity to work, you still need to count it in. Remember to double check your PoE IP camera power consumption ether in the user manual or technical specification spreadsheet.

To provide the proper amount of power for PoE IP cameras, another important feature to look for in a PoE switch for IP cameras is its abilities to automatically adjust voltage accordingly. Many security cameras run either 12V or 24V power, if not supplied with the proper power voltage, the IP camera either won’t work or even be overloaded.

Maximal Power Supply of PoE Switch
Besides the power consumption of IP cameras, the maximal power supplies of your PoE switch matters as well.

If the maximal power supply of all your cameras exceeds your PoE switch power cap, then the PoE switch won’t provide enough power for your PoE IP cameras, pan-tilt-zoom (PTZ) IP cameras in particular. Insufficient power supply to the IP cameras are the common culprits for video loss and IP camera poor performance.

POE Switch for IP Camera

That being said, when buying a PoE switch for IP cameras, it’s important to go for a PoE switch with more power juice or reducing the number of PTZ IP cameras plugged into the PoE switch as PTZ cameras draw more power than other IP cameras.

Can Cat5 Ethernet Cables Cover PoE Transmission Range?
The transmission range of PoE network is 100 meters. PoE IEEE802.3af standard requires powered sourcing equipment (PSE) output power is 15.4W, after 100 meters transmission, the powered devices (PD) can receive 12.95W power. According to 802.3af standard current value-350ma to calculate, the resistance value of 100 meters Ethernet cable should be (15.4-12.95W)/350ma = 7 Ohm or (15.5-12.95)/350ma = 7.29 Ohm.

Obviously, Cat5 Ethernet cable can meet the requirement, but nowadays customers tend to use Ethernet cable Cat5e.

Conclusion
PoE switch is not only the device that provides data connection and electric power to IP cameras, but other PoE devices such as wireless access points, VOIP phones, and NVR recorders. Therefore, when choosing PoE switches, you should count all the devices that you meed to connect with. As a professional telecom supplier, our products including IP cameras, PoE switches and Cat5 cables, are thoroughly tested for use with video surveillance equipment. If you have questions about which PoE power supply is recommended for your security application, please contact us directly.

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How to Understand PoE and PoE+ Switches

Power-over-Ethernet (PoE) is the technology that allows network switches to transmit power and data through an Ethernet cable at the same time. PoE switch streamlines both of the processes of powering and providing data to the device, which makes it a straightforward and reliable device for home network and small enterprise application. This article describes two types of PoE (PoE and PoE+) that are commonly used and provides information on what types of PoE can be used according to different applications.

PoE Versus non-PoE Technology
Power over Ethernet technology facilitates powering a device (such as an IP phone, IP Surveillance Camera, or NVR recorder) over the same Ethernet cable as the data traffic. Figure 1 shows an Ethernet Network with IP camera, PoE Switch, NVR recorder and Wireless router. Compared to non-PoE devices, PoE devices feature with flexibility that allow you to easily place endpoints anywhere in the business, even places where it might be difficult to run a power outlet.

Wireless Home Network with POE switch

PoE Versus PoE+ Technology
PoE was first defined in the IEEE 802.3af standard. PoE devices utilize PoE standard, which can provide up to 15.4W of DC power to each port. A later standard, IEEE 802.3at, known as PoE+, increases the amount of power to 30 W. The major difference between 802.3af (PoE) and 802.3at (PoE+) is that PoE+ PSEs can provide almost twice as much power over a single Ethernet cable.

PoE and PoE+

Can PoE+ devices work over PoE Ports, Or vice versa? The PoE+ standard provides support for legacy PoE devices, meaning that an IEEE 802.3af powered device (PD) can operate normally when connected to IEEE 802.3at (PoE+) power sourcing equipment (PSE). PoE+ PSEs can supply power to both PoE and PoE+ PDs. However, as PoE+ PDs require more power than PoE PSEs can provide, PoE PSEs can only supply power to PoE PDs.

PoE Switch Or PoE+ Switch
Whether to use PoE or PoE+ switch for your network, you need to calculate your required power budget carefully for all of the PDs you plan to connect. PoE+ IEEE 802.3at devices can supply a maximum of 30 watts per port, while PoE IEEE 802.3af devices can supply a maximum of 15.4 watts per port. However, some power is always lost over the length of the cable, and more power is lost over longer cable runs. The minimum guaranteed power available at the PD is 12.95 watts per port for PoE and 25.5 watts per port for PoE+.

For most endpoints, 802.3af is sufficient but there are devices, such as Video phones or Access Points with multiple radios, which have higher power needs. It’s important to point out that there are other PoE standards currently being developed that will deliver even high levels of power for future applications. Optical switches have a power budget set aside for running the switch itself, and also an amount of power dedicated for PoE endpoints.

PoE Gigabit Switch

FS PoE Switches
FS POE switches can supply power to network equipment such as weather-proof IP cameras, AP and IP telephones. They are featured with high flexibility, high stability and high resistance to electromagnetic interference. All FS PoE switches come with a one-year limited warranty, including any quality problems during the free maintenance. The following above shows 1G PoE Switch with 24 1000BASE-T and 4 SFP ports.

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