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Power over Ethernet Switch: Passive PoE Vs Active PoE

Power over Ethernet (PoE) is a technology for wired LANs. This allows a single cable usually Ethernet cable to provide both data connection and electric power to devices such as IP cameras, NVR recorders, wireless access points, etc. A PoE switch, compared with other Gigabit network switches, has power over Ethernet injection built in. This feature allows end-user to power PoE capable devices without the need for a separate power supply or the need for an electrical outlet near the powered device. If you have read about the how-to-understand-poe-and-poe-switches, you must know clearer about the difference between PoE and PoE+ switches. However, today’s article will help you understand active PoE and passive PoE.

What is PoE Switch?

As mentioned before, a PoE switch not only supply power to devices but also carries network connection. In general, a PoE switch usually contains multiple Ethernet ports, e.g. a PoE switch with 8 ports, PoE switch with 16 ports, 24 ports PoE switch, or PoE switch with 48 ports. If you are looking for PoE switch to cover all your devices, it’s important to check the port number first.

8-port PoE managed siwtch

The following image shows the 8-port PoE managed switch.

 

Passive Power over Ethernet vs. Active PoE

To safeguard a voltage range, the Power over Ethernet devices must communicate according to established procedures. In simple terms, active PoE refers to any type of PoE that negotiates the correct voltage between the switch and PoE-powered device. Passive PoE does no such negotiation, and as such is always sending electric current out over the Ethernet cable at a certain voltage regardless of the device it’s going to.

Active PoE

If your PoE switch uses 48V 802.3af or 802.3at standard, it is considered to be active PoE. The power supply unit inside the active PoE switch usually tests the connection before providing the supplying voltage, meaning that PoE switch will check the power coming in, and if it doesn’t meet the device requirement, it won’t power up.

Passive PoE

Passive PoE refers to any devices using PoE that is not 802.3af or 802.3at. Unlike active PoE switch, In passive PoE, no negotiation takes place between the two devices, but instead the known cable layout is used from Standard 802.3af, mode B. Therefore, it is extremely important to know what PoE voltage your devices requires before plugging in the Ethernet cable and powering it up. If you connect the wrong voltage, you may cause permanent electrical damage. Passive PoE is like plugging a 120V appliance into a 240V outlet, but with devices than cost much more than a simple toaster.

Conclusion

The big advantage of Power over Ethernet switch is that it allows greater flexibility in locating devices, as you don’t have to be situated near a power source—power is carried to them right in the Ethernet cable. That also frequently results in significantly lower installation costs, especially where many Access Points must be setup. The difference between Passive PoE and active PoE switch is quite obvious. For more, you can go through previous articles.

 

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.

Source: www.fiber-optic-solutions.com

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 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.

Original Source: How to Understand PoE and PoE+ Switches

Cisco Vs Huawei – Which One is the better Choice for Ethernet Switches?

Cisco, as the big brother in the telecom industry, has dominated the market of networking devices (like routers and switches) for a long time. No one can compete with him. Huawei, however, is the rising star in Chinese market. It ranked 83rd in the latest Fortune 500 list on July 23, 2017. Many people assume that in the near future, Huawei will lead the world instead of Cisco. Thus, in this article, we are going to analyze the strength of Cisco and Huawei, along with the differences between Cisco and Huawei switches.

Cisco Vs Huawei

Cisco Vs Huawei — Brand Awareness and Market Share

Both Cisco and Huawei are the relatively young enterprises, which are founded in 1980s. With 30 years’ development, Cisco was at the top of respondent edge/core router and CES manufacturer leadership scores. Cisco systems mainly offers networking devices, networking management, Cisco IoS/NX-OS software, storage area networks, wireless equipment, data center devices, and interface & modules, etc.

Cisco Vs Huawei

The above table shows the basics of the two companies.

According to Fortune 2017, Huawei, with the revenues of $78.5108 billion rank No.83 in Fortune 500 List, which is also the first time in the top hundred. Huawei is famous for mobile and fixed broadband networks. Recently, their optical switches, multimedia technology, tablet computers also wins the heart of customers. Ren zhengfei, founder of the Huawei Technology, once said, Huawei’s secret of success is our focus and dedication to our customers. Huawei will embrace a better future.

IHS Markit Analysis

In the 2016 study, Cisco along with Juniper, Huawei and Nokia (including Alcatel-Lucent), form a top tier clearly separated by a wide margin from the other manufacturers. There was a big gap between these four and their competitors, with the sole exception being price-to-performance ratio.

Cisco Vs Huawei
We ask carrier survey respondents to rate their familiarity of service provider edge/core router and /or CES manufactures.

Looking at the individual manufacturer selection criteria, for technology innovation and product roadmap, Cisco and Nokia were numbers one and two, respectively. And for price-to-performance ratio, Huawei at number one.

Cisco Vs HuaweiAnd for the above table, we can see Cisco drops share in router market; Huawei, Juniper gain & market is rising.

For the full year 2016, Cisco declined 3.7% over 2015, while recording 57.0% market share (compared to 60.6% in 2015). In the hotly contested 10GbE segment, Cisco held 53.0% of the market in 4Q16, finishing essentially flat over the previous quarter.

Huawei continued to perform well in both the Ethernet switch and the router markets. For the full year 2016, Huawei’s Ethernet switch revenues grew 61.8%, leading to a market share of 7.0%, compared to 4.4% in 2015.

Why Would People Go for Huawei?

The reasons that Huawei becomes so strong are not only due to the support from the government, but also because of its powerful local support capability. There are bugs in the high-end devices, and this is inevitable. If two Cisco engineers are assigned to solve the problem, Huawei can assign 20 engineers to fix it. Besides, if one major client like CT has customized requirements, Huawei can ask product engineers to work in the CT office as soon as possible, even Cisco cannot do this. This kind of quick response ability is obviously the advantageous factor for Huawei to exceed Cisco in its own home court.

Cisco Vs Huawei — Switch Comparison

There is some relationship between Cisco Switch and Huawei Switch. So Cisco Switch or Huawei Switch? The following comparison simplifies the relationship of Cisco switch and Huawei switch, which can help you select the most suitable switch devices for your office, or company and organizations.

Cisco Switches Vs Huawei Swicthes

The popular series of Cisco switches are the enterprise switches, Catalyst series and Nexus switches. Cisco Catalyst series includes 2960 series, 3650 series, 3850 series, 4500E series, etc. Cisco Nexus series includes 9000 series, 7000 series, 6000 series, 5000 series, 3000 series, 2000 series, etc. Cisco Catalyst switches are designed for core layers in campus network, while the Nexus is mainly for data centers. Nexus series switches can support Ethernet, Fibre Channel and FCOE all in the same chassis but the catalyst don’t. The catalyst switches support only Ethernet.

Huawei switches also have various series, such as data center switches, campus switches and SOHO & SMB switches. The popular one is the campus switches. In all the campus switches, the S5700 series is the hottest switch. To have a further understanding, the following part will briefly compare Cisco WS-C3850-24T-L and Huawei S5700-28X-LI-AC switches.

Cisco WS-C3850-24T-L Vs. Huawei S5700-28X-LI-AC

WS-C3850-24T-L is Cisco Catalyst 3850 24 Port LAN Base equipped with stackable 24 10/100/1000 Ethernet ports, and 350W AC power supply.

  • WS=Switch C=catalyst 3850=3850 series
  • 24=Ethernet Port Number
  • T=Ethernet Ports
  • L=LAN Base image

S5700-28X-LI-AC is the Huawei S5700 series 10G switches, which are equipped with 24×10/100/1000Base-T Ethernet ports and 4x10GE SFP+ ports.

  • S=switch
  • 57=5700 Series
  • 00=5700 Sub Series like 5710 series
  • 28=the biggest number of data interfaces is 48, including uplinks and downlinks
  • Li=S5700 series
  • AC=Ac power supply

To sum up, each Cisco Catalyst 3850 model, is similar to a S5700 model, or is equivalent to one of Huawei S5700 models, which will not be listed here.

FS.COM White Box switches and Compatible Transceiver Modules

FS 40G/100G white box switches provide high performance, increased availability, low latency and better serviceability for next-generation data centers and enterprise networks in different applications. And they also support spine-leaf network topology that leverage commoditized hardware for the best price/performance, just as shown below.

100g-switchesBesides the 40G/100G white box data center switches, we also provide a full series of compatible transceiver modules including the SFP, SFP+, QSFP+, SFP28, QSFP28, CFP, etc, which are compliant with major brand. Custom service is also available.

Summary

Cisco Vs Huawei, we can’t say which one is better than the other. To be considered the No.1 choice for your network, Cisco switches meet the needs of organizations and offices of all sizes and sorts. As for Huawei, it has several product lines that are similar to Cisco devices, but have their own network hardware lines and IT solutions for different network demands. Besides Cisco and huawei, there are other brand that are also effective and reliable, such as FS enterprise Ethernet switches. For more detailed information, please direct visit fs.com.

Original source: cisco-vs-huawei

Ubiquiti Unifi Switches Vs Cisco Catalyst 2960, Which One Should I Choose?

Recently, the hot debate between Cisco and Ubiquiti Unifi switches has aroused much attention. Data center managers reckon that Cisco catalyst series switch is undoubtedly the ideal choice than UBNT Unifi switches. While small enterprises have to choose the much cheaper Unifi switches. In the ideal world, they’d love to go with Cisco catalyst 2960, but with a limited budget, they can do nothing about it. So basically, this article will help you look for the best options between Cisco Catalyst 2960 and Unifi switches.

Takes a Big Leap With Cisco Catalyst 2960

Cisco Catalyst 2960 series switches are the layer 2/layer 3 edges, providing 10 and 1 Gigabit Ethernet uplink flexibility, Power over Ethernet Plus(PoE+) access connectivity for enterprise, midmarket and brand office networks. There are Catalyst 2960-S and 2960-X series switches.

Cisco 2960-S is the previous layer 2 access switch with the switching capacity of 176Gbps, 2 20G or 4 1G uplinks and PoE/PoE+ up to 740W.
Cisco 2960-X/2960-XR switches provides the convenience with layer 2 and layer 3 in a single switch with switching capacity of 216Gbps.

WS-C2960S-24PS-L

Figure 1 shows Cisco WS-C2960S-24PS-L  switches and its features.

FS.COM also offers compatible Cisco 2960 SFP modules, which are 100% tested assured. You don’t need to worry about the our Cisco 2960 x SFP compatibility.

The Benefits of Deploying Catalyst 2960 Switches

  • Scale/Performance

Cisco 2960 series supports gigabit access growth for wired and wireless/802.11ac, and more traffic through IP address scalability. And with PoE/PoE+ capacity, Cisco 2960 can be easily and rapidly deployed in many IP endpoints.

  • Efficient Switch Operation

Cisco Catalyst 2960 series switches provide optimum power savings, low power operations for industry best-in-class power management, and power consumption capabilities. The Catalyst 2960 ports are capable of reduced power modes so that ports not in use can move into a lower power utilization state. In all, Cisco Catalyst switches reduce greenhouse gas emissions and increase energy cost savings and sustainable business behavior.

  • Sustainability

Cisco Catalyst 2960 Series Switches include the following features sets: Cisco EnergyWise technology, efficient switch operation, intelligent power management. Cisco Catalyst switching solutions enable greener practices through measurable power efficiency, integrated services, and continuous innovations such as Cisco EnergyWise, an enterprise wide solution that monitors and conserves energy with customized policies.

Get Big Saving on Ubiquiti Unifi Switches

Unifi Switches is fully managed Gigabit switch, delivering robust performance and intelligent switching for your growing networks. The most popular model of this Unifi Switches is US-24, US-48. According to Ubiquiti networks, Unifi switches have the four following features.

US-24-150W Unifi Switches

Figure 2 shows the Uniquiti Unifi US-24-250W port analyst.

    • Multi-Site Management

A single instance of the UniFi Controller running in the cloud can manage multiple UniFi sites within a centralized interface. Each site is logically separated and has its own network monitoring, configuration, maps, statistics, and admin accounts.

      • Optical Fiber Backhaul

Two SFP ports support uplinks of up to 1 Gbps. For high-capacity uplinks, each 48-port model includes two SFP+ ports for uplinks of up to 10 Gbps.

      • Non-Blocking Throughput

For its total, non‐blocking throughput, the 24‐port model supports up to 26 Gbps, while the 48-port model supports up to 70 Gbps.

      • Switching Capacity

The UniFi Switch offers the forwarding capacity to simultaneously process traffic on all ports at line rate without any packet loss.

What Features Does Cisco Switches Have That Are not Addressed by Ubiquiti?

Cisco—Solid brand and construction

      • Solid software packages
      • Very ala Carte on their service and components.
      • Requires Prior knowledge of Cisco Networking. And configuration help from Cisco.
      • Most will feed a good sized area but you have to configure for overlap.
      • the controller is a small rack mount box and should be in your data center.
      • Simple management

Ciisco APICEM

Figure 3 shows the network plug-n-play with Cisco APIC-EM.

What Are the Tempting Points of Unifi Switches, Except Costs?

Ubiquiti—Good Brand and construction

      • Good software and easy to understand
      • No extra fees other than buying equipment
      • If you can program a home router you can set this unit up and the guest network with ease.
      • The controller is software based and easy to install and move should the original crap out or need to be reworked.
      • You can feed a good size office off of 2 of the Long-Range APs. the controller will handle the overlap for you.

How to Make a Choice Between Ubiquiti and Cisco Switches?

Cost: Price is the biggest incentive in most of the case. A general quote for ubiquiti and Cisco, the Cisco is typically 3 times the cost of ubiquiti. Considering the cost differences between Unifi and Cisco catalyst switches, what makes Cisco so pricey. According to many fiber optic technicians, the ubiquiti system will give them 99% uptime while the Cisco system will give them 99.99% uptime.

Performance: Except the budget, another thing to add into the account is going to be bugs in the code/hardware failures. Within the telecommunication industry, you are not going to find much better, as far as stability is concerned, than Cisco.

Support: With Cisco, you will get some of the best support in the industry. Ubiquiti Unifi switches are quite easy to install and manage. Their controllers are software based, which are quite easy to work with.

Together, If your require a more secure, more robust solution to meet your enterprise and complexity needs, then Cisco is your best option. If you are small to medium sized company and are not trying to create a holo projection of the wheel at every desk. Ubiquiti will be a great fit and should more than meet your needs.

Recommended Information
FS.COM 1/10G Enterprise switches supports layer 2 switching capacity featuring Cumulus Linux, Intel Processor, Broadcom Chips, and 176Gbps switching capacity.

FS.COM S2800 LAN access switch

Figure 4 shows the S2800 (24*100/1000Base-T+4*GE Combo) switches.

Conclusion

Although there is exact answer to this question, I Insist that you ask several questions inner your mind before taking the next leap.
Q1: Is what case would you absolutely need Cisco and Ubiquiti wouldn’t do the job?
Q2: What features does Cisco products have that are not addressed by Ubiquiti?
Q3: Is this the best solution for me? Can I use other branded switches like FS.COM?
If you have any comment about this topic, please leave your notes with us.