Can 10Gb Switch Port Link to Gigabit Switch Port?

With the tendency for higher speed network, 10Gb switch has already become familiar with home individuals, no longer the privilege of enterprise operators. However, the issue of SFP to SFP+ compatibility always puzzles many network switch users, even some engineers. Will 1Gb SFP transceivers work with 10Gb SFP+ ports on 10Gb switch? Or will 10Gb SFP+ run at 1Gb to link gigabit switch? And If 10Gb optics in a switch can auto-negotiate to 1Gb when the other end is 1Gb? All these related questions origin from the link between 10Gb SFP+ slots on 10Gb switch and 1Gb SFP ports on gigabit switch. Thus this article will reveal the mask of SFP to SFP+ compatibility from this point of view.

10G SFP+ Port on 10Gb Switch Take 1G SFP Optics on Gigabit Switch in Most Situations

Will 1Gb SFP transceivers/modules work with 10Gb SFP+ ports? The answer is “Yes” in most cases. There are many vendors providing 10Gb switches that can take both a 10G SFP+ and a 1G SFP in the 10Gb SFP+ slot, but not at the same time for obvious reasons. This option is supported by dual speed operation. So before plugging a SFP transceiver into the SFP+ port on your 10GbE switch, one must consult your rep to make sure the 10Gb switch port support dual speed.

To achieve link of 10Gb switch port to gigabit switch port, here is a simple guide. Install a 1Gb SFP module on the 10GbE switch SFP+ port and the gigabit switch 1Gb SFP port respectively, then connect the 10Gb switch and the gigabit switch with corresponding 1Gb SFP fiber cable or Ethernet copper cable (eg. Cat6).

1G SFP Port on Gigabit Switch Cannot Take 10Gb SFP+ Optics on 10Gb Switch in All Cases

Will 10Gb SFP+ running at 1Gb? The answer is definitely “No”. SFP optics do work in SFP+ slots in most cases, but SFP+ optics on 10Gb switch can never work in SFP slots on gigabit switch. The reason is about a power availability thing. As we know, once an module is installed, the speed of the port is decided. Most SFP+ slots are backward compatible with SFP modules to run at 1G speed. However, the SFP slots on gigabit switch cannot support the 10G speed required by SFP+ modules. For instance, most Cisco and FS 10Gb switches support 10G SFP+ and 1G SFP optics on their SFP+ ports. But some Brocade gear and HP A-series models are SFP+ only. One need to double check the compatibility of this switch with the vendor rep.

FS 10Gb switch SFP+ port link to gigabit switch SFP port

FS 10Gb switch SFP+ port links to gigabit switch SFP port via 1G SFP modules and fiber patch cable.

SFP+ Optics in a 10Gb Switch Cannot Auto-negotiate Down to 1G when the Other End Is Gigabit Switch

Unlike copper SFP modules supporting 10/100/1000 auto-sensing, fiber optics do not support auto-negotiation. Because this technology is based on electrical pluses but not optical pluses. Thus 10Gb SFP+ optics on 10Gb switch can not auto-negotiate down to 1Gb if the other end is gigabit switch. In fact, most SFP and SFP+ transceivers only run at its rated speed and the transceivers at both end of the cable should at the same speed. For example, if a 10Gb SFP+ module is plugged into the 10Gb switch port, it will only run at 10Gb. In this case if you link it to the gigabit switch port, it will not work. When sticking a 1Gb SFP module in the 10G SFP+ port, the 10Gb switch will only run at 1Gb. As thus you can link it to gigabit switch.

Sometimes the 10GbE switch port would lock the speed at 1G until you reconfigure the switch to 10G. It is noted that SFP+ port usually enables a speed under 1G, which means one cannot insert 100Base SFP modules into SFP+ ports on 10Gb switch.

Conclusion

For the issue of SFP to SFP+ compatibility, a simple response is that most SFP+ can take SFP but not vice versa. The uncertain situation requires one to ask their switch vendors for clear reply. Thus 10Gb switch port is possible to link to gigabit switch port to run at 1G speed. The only thing you need to do is to plug each the aforesaid port with a 1Gb SFP module, and then connect the two modules on the 10Gb switch and the gigabit switch with a corresponding fiber patch cable or Ethernet copper cable.

FS S3800-24T4S Stackable 24 Port Switch Introduction

For a wide range of home lab and SMB users, 1/10G Ethernet switch saves budget and plays a big role in network expansion. In this regard we have recommended various gigabit switches with 10GbE uplink, say S3800-24T4S managed 24 port switch with 4 x 10G SFP+ uplinks. Actually, S3800-24T4S also highlights stackable capability. So today let’s dive into S3800-24T4S gigabit stackable 24 port switch.

S3800-24T4S stackable 24 port switch

FS S3800-24T4S Stackable 24 Port Switch Overview

FS S3800-24T4S stackable 24 port switch is one of FS S3800 Series Ethernet switches. It is designed for class-carrier 1GE access and 10G uplink network, and dedicated to covering all kinds of enterprises and operator customers. This gigabit switch comes with 1 x console port, 24 x gigabit ports and 4 x 10G uplinks. Profit from 4 x 10G SFP+ ports, S3800-24T4S 24 port gigabit switches can be stacked together to work as a whole unit for cost-effective 10GE access or aggregation. Besides, it adopts high performance processor to achieve full wired speed forwarding and line-dormant capacity to coordinate with NGGN unified software. Table below lists the detail specifications of S3800-24T4S 24 port switch.

Switch Class Layer 2+ CPU ARM
Switch Capacity 128Gbps Switch Chip BCM53346
Forwarding Rate 95Mpps VLANs 4K
Power Supply 100-240VAC, 50/60Hz Flash Memory 16MB
Power Consumption ≤40W (Full-loaded) SDRM Memory 512MB
Highlights of S3800-24T4S Stackable 24 Port Switch

In addition to the above mentioned information, S3800-24T4S stackable 24 port switch also features other characteristics.

·Multiple Port Configuration

S3800-24T4S gigabit 24 port switch provides high port density with 24 x 10/100/1000base-T RJ45 copper ports and 4 x 10G SFP+ uplinks in a compact 1RU form factor (17.32’’ x 8.66’’ x 1.73’’). The port diversity allows one to directly connect it to a sever, to a 10G switch with uplink port for 10GbE network, or to stack up to four S3800-24T4S gigabit switches together to expand network bandwidth.

·Single or Dual Power Supply

It is noted that FS S3800-24T4S 24 port switch comes with two power versions: single power supply and dual power supply. The S3800-24T4S 24 port gigabit switch with two built-in power supplies provides redundant power supply in unexpected outage. Generally speaking, for L2+ Ethernet switches, single power completely can satisfy the need, and it won’t easily go dead. However, the dual power supply does play backup role in power failure, thus it is ideal for mission-critical applications.

·Good Ventilation and Indication Design

FS S3800-24T4S stackable 24 port switch is equipped with 2 x build-in cooling fans and plenty reserved vents, which facilitate air flow and system cooling. Also, 28 x LED indicators are laid in order to report the working status and display the “slot number” for rapid identification and problem resolution.

·Fully Managed Advanced Feature

As fully managed gigabit Ethernet switch, S3800-24T4S 24 port switch can be managed by both CLI command and web user interface. Moreover, for excellent hardware and software, the gigabit switch is perfectly matching applications of small networks. For instance, it supports various advanced functions, including CPU, QoS, DHCP, VLAN/VxLAN, BCM53346 Chip and etc.

How to Use S3800-24T4S Stackable 24 Port Switch?

As a stackable managed gigabit switch, S3800-24T4S 24 port switch can be either used as standalone switch or a part of stacking system. This flexibility enables availability in various physical networks.

For expanding network capacity and simplifying management, stacking switches is very popular in data centers. A single S3800-24T4S stackable 24 port switch can provide 128Gbps switching capacity to your network. However, it will double the capacity to 256Gbps as 2 switches are stacked as a whole. In fact, S3800-24T4S gigabit Ethernet switch supports up to 4 switches stacked together, extending your network to a total switching capacity at 512Gbps. Also, operators can easily control all the stacked switches with the console port and add or remove a gigabit switch without affecting other switches in the stacking system.

To stack up S3800-24T4S 24 port switches with 10G SFP+ ports, you should connect them via SFP+ modules with fiber patch cable or via DAC or AOC directly. Here is a video presentation for S3800 Series 24 port switch stacking.

Conclusion

FS S3800-24T4S managed stackable 24 port gigabit switch with 4 x 10G SFP+ uplinks is an excellent solution to expand your network from 1G to 10G. Further more, with physical stacking technology, 4 S3800-24T4S stackable 24 port switches can be stacked as a whole system, which boosts your network to 512Gbps total capacity and simplifies management. Besides S3800-24T4S gigabit Ethernet switch, FS S3800 Series also include S3800-48T4S 48 port gigabit switch and S3800-24F4S fiber SFP gigabit 24 port switch.

Related article: FS S3800-48T4S 48 Port Switch Introduction

10Gb Switch for Home

Since the introduction of 10 Gigabit Ethernet, the ever-increasing demand for high bandwidth has been driving the pervasive application of 10Gb Ethernet switch. However, for its high cost it is normally limited to the enterprise and server market and doors are shut down for home individual users. Nevertheless, gamers and speed addicts always hanker for the faster hardware, so the demand for high bandwidth at home provided by 10Gb switch is rising too. Only once attempt to 10GbE, one will never want to turn back to 1 Gigabit Ethernet.

10Gb switch for 10Gb home network

Overview of 10Gb Switch for Home

Generally, there are several versions of 10GbE switch. The first is 1GbE switch with a few 10Gb SFP+ uplinks, such as FS S5800-48F4S 48 port 1GbE SFP switch with 4 10GE SFP+ ports ($1699). The second is 10GbE switch with 10Gbase-T ports or 10GE SFP+ ports as main connection, such as FS S5900-24S 24 10GE SFP+ switch ($1999). Another is 10GbE switch with a few 40/100G QSFP+ uplinks, such as FS N5850-48S6Q 10GbE ToR/Leaf switch with 6 QSFP+ 40GbE ports ($2999). For 10Gb home Ethernet, the former two switches can be taken into consideration for their cheaper price. Especially for the first type, it is very popular for building 10Gb home network. Here are some reasons. First, one can connect the host, virtualized server and workstation with the 10Gb links. Second, 10Gb SFP+ connection usually costs less power and expense than 10Gbase-T switch. Table below lists the most cost-effective 10Gb switches provided by FS.COM.

FS 10Gb Switch Port Price
S3800-48T4S 48 x 1Gbase-T ports with 4 x 10GbE SFP+ uplinks $499
S5800-48F4S 48 x 1GbE SFP ports with 4 x 10GE SFP+ uplinks $1699
S5800-8TF12S 8 x 1GbE RJ45 ports, 8 x 1GbE SFP ports with 12 x 10GbE SFP+ uplinks $1899
How One Benefits from 10Gb Switch for Home?

As we know, we can connect 10G NICs directly and interconnect devices with 10Gb SFP+ cables to achieve 10Gb network. Thus many people get confused about one question: why not using cheaper 10G NICs rather than expensive 10Gb switch? For very small 10G network with a few computers, NICs indeed can be a solution. But how about home networks with more users? For instance, you have 4 computers, then you need to buy 8 total 10G NICs and corresponding cables for connection, which can lead to expensive additional cost for expansion. So at this point home users need to think about deploying a 10Gb switch. Moreover, 10Gb switch features low- latency, fewer bottlenecks, simple virtualized environment, spare bandwidth, rack space efficiency, low power consumption and expansion flexibility.

How to Build 10Gb Switch for Home?

To set up a 10Gb home network, several components are required. 10GbE core switch, access switch with 10G uplinks, 10G network interface card (NIC) for storage and server, and 10G cabling. For 10G switch selection for home, maybe you should avoid some brand-name vendors for their high expense. FS specially designed S3800-48T4S 10Gb switch for home users with a low offer at $499 ($479 with single power). It has 48 1000Base-T ports with 4 10GbE SFP+ links. For 10G cabling selection, there are RJ45 copper cable and SFP+ fiber capable of working with 10Gb/s. Usually, home users have no need to switch from Ethernet copper cabling to fiber cabling. But for 10Gb speed, you’d better use Cat6a or Cat7 Ethernet cables to resist interference. And for NACs and severs with 10G SFP+ links, the most cost-effective solution is to use 10G (Direct Attach Cable) DAC. It is a copper cable with SFP connection on each side available for various lengths. For example, FS SFP-10G-DAC, Cisco compatible SFP+ to SFP+ connection, is a passive direct attach copper twinax cable with length ranging from 0.5m to 7m.

FS 10Gb switch

Conclusion

This article focused on the 10Gb switch for home usage. It introduced the main types of 10Gb switch available for home users. And gave some practical recommendations under cost-efficient considerations for building 10GbE home network. For gamers and any other Tech or speed pursuers, deploying 10Gb switches for home network will provide you superior experience of high bandwidth. FS provides 10Gb switch with 12/24/32/48 ports for different requirements. You can visit our official website for more information.

How to Add PoE to Your Network?

In data centers, there are a lot of electrical devices and each one requires a power supply cable and at least one connection wire for transmission. It’s a disaster to see all those wires scattering all over the floor and tangling together. To introduce Power over Ethernet technology, we can cut down the number of wire drops and simplify the management control. So what’s the practical methods for adding PoE to your network? Read the following passage, to learn about the two solutions: adopting PoE switch or PoE injector.

Overview of PoE Implement Method

PoE requires PoE-enabled networking devices for power supply on the Ethernet cable. To realize this technology, there are two types of power sourcing equipment (PSE) for adopting: endspan (IEEE 802.3af refers to it as “endpoint”) and midspan. Endspan is an Ethernet switch that has built-in PoE data transmission circuitry. A midspan is an intermediary device between a non-PoE switch and powered devices (PD). Thereinto PoE injector is a frequently used available external midspan device.

Adding PoE by PoE Switch (Endspan)

When you need to set up a new Ethernet network with power over Ethernet technology or you want to upgrade system and replace older non- PoE switches, employing endspan is a good choice. How to add PoE to your network by PoE switch? Just connect it to other network devices, and the switch itself will figure whether they are PoE supportable devices and control power automatically. There are various types of PoE switch available, ranging from “dumb” unmanaged one, smart partly managed one and fully managed one with advanced management. It is also various from port quantity, such as 8, 16, 24 and 48 port.

It is noted that the PoE+ switch is a PoE plus switch for providing up to 30W power consumption. For example, FS S1130-8T2F 8 port PoE switch is a managed PoE+ switch with 2 SFP port, IEEE 802.3at complied and IEEE 802.3af backward compatible. It has maximum power supply of 130W and switching capacity of 20Gbps. FS S1130-8T2F supports various PoE devices and is best fit for network equipment such as wireless APs, IP phones and weather-proof IP cameras.

Adding PoE by PoE Injector (Midspan)

If you don’t want to discard your already used network switch and only PoE capability is needed to be added, you can simply adopt midspans. PoE injector is a device that can add electrical power while receiving signal from one end of the cable, and then deliver both the data signal and the power via the other end of the cable. Instead of PoE switch, midspan can also be used as an economical and functional solution where only a few PoE ports are in demand. How to add PoE to your existing LAN by PoE injector? First, power on PoE injector and non-PoE Ethernet switch respectively, next connect them via an Ethernet cable. Then connect PDs such as IP phones with PoE injector and finally the system can run as a whole.

In the case of older end devices are not PoE-ready, a splitter can be helpful for adding PoE to your network. To apply a splitter onto the end of the Ethernet cable will enable signal and power to be split into two different lines.

PoE switch vs PoE injector installation

This figure shows the installation of PoE switch vs PoE injector for adding PoE to network.

PoE Switch or PoE Injector: Which to Employ?

After diving into each respectively, we made a comparison of PoE switch vs PoE injector for concerning about adding PoE to network.

PoE Switch PoE Injector
Price Higher Cost Economical
Management and Control Easy for management (power and transmission) Requiring separate two wires for powering on switch and PoE injector
Implement Method Upgrade to PoE network by replacing the old Ethernet switch with PoE switch Install PoE injector to add PoE capability to the existing non-PoE switch
Emergency Reaction Potential chance of the whole system’s outage Only one device be affected

For most concerns about cost-efficiency and PoE capability required, you can go for PoE injector. However, for upgrading system and future-proof superior functionality concern, PoE switch is obviously a better choice.

Conclusion

Both PoE switch and PoE injector are power sourcing equipment for adding PoE to a network. PoE switch is an endspan, naturally fitting for new set-up or upgrade-needed network. PoE injector is a midspan, better fitting for existing non-PoE network without switch replacement requirement. For PoE switch purchase, FS.COM is a reliable vendor providing a wide rage of types for different demands. Any other information to know, just visit our official website and blog.

Understanding SFP Ports on SFP Switch

Catching a glance of the modern network devices, one will see different ports are built in for different connection. For instance, we got USB interfaces in cellphones and RJ45 ports in copper switch. But how about SFP port? SFP port is built-in interface in various devices including gigabit switch, SFP switch, network interface card (NIC). This article will focus on the understanding of SFP ports on SFP switch.

What Are SFP Ports on SFP Switch?

SFP port (mini-GBIC port), a small form-factor hot pluggable interface, is designed for high speed and density SFP connection. It is typically built in 10Gb switch with SFP+ uplinks. Different from RJ45 ports for copper connection only, SFP ports on SFP switch support both copper and optical links. When SFP ports on SFP switches are inserted into SFP modules with electrical ports, Ethernet copper cables (Cat5e/Cat6/Cat7) are needed for data transmission. When SFP ports are plugged by SFP optical modules with optical ports, fiber patch cables are required for data transmission. Counting to this feature, SFP ports empower SFP switches the switching function to connect various Ethernet and fiber cables through the network. For the fiber one, single mode fiber (SMF) and multimode fiber (MMF), 1GE and 10 GE speed are all compatible. Moreover, it contributes to the adaptability of either short distance transmission by deploying RJ45 SFP or long distance transmission by fiber SFP.

FS SFP switch

Figure 1: This is a demonstration of SFP ports on FS SFP switch plugged by fiber SFP modules, then connect single mode fibers for data transmission.

SFP Ports Advantages on SFP Switch

·Small Size and Hot-pluggable Feature

Compared with early GBIC module port, SFP port for SFP module has much lower volume ratio. This small-sized optimization enables 2 times the density for SFP ports configuration on the same patch panel. Thus also expands the whole data capacity. Besides, SFP port is an I/O device, which is hot-swappable. Moreover, SFP ports on SFP switches can be exchanged with different port types, such as 1000Base-SX, 1000Base-LX/LH, 1000Base-ZX and 1000BX10-DU.

·High Reliability and Security

Fiber SFP plugged into SFP port on SFP switch usually connects with a fiber cable, which delivers data in light rather than electrical signal. First, for reliability concern, it largely diminished data loss and electromagnetic interference. Second, for security concern, fiber jumpers are less likely to catch on a fire than copper cables in severe environment. Sensitive data information is also more difficult to be illegally filched.

·10 GE SFP+ Uplink for Higher Network Capacity

Gigabit switch often has built-in SFP ports and SFP+ ports. They can support the load blancing of redundant links. Even though currently you only need 1GE network, for the concern of later system upgrade and future-proof technology, 10GE SFP+ ports are necessary for SFP switch.

How to Use SFP Ports on a SFP switch?

To illustrate the usage of SFP ports on a SFP switch, taking FS S5800-48F4S 10gb switch as an example. FS S5800-48F4S 48 port gigabit SFP switch comes with 48 x 1GbE SFP ports and 4 x 10GbE SFP+ ports. It has a 176Gbps switching capacity with low latency in a cmpact of 1U form factor. It is a 10GbE L2/L3 carrier access switch designed for a variety of data center enterprise Ethernet networks, including MPLS, IPv4/IPv6, sFLOW, PIM-SM, PIM-SSM. To use SFP ports on FS S5800-48F4S SFP switch, there are two solutions for network application.

·Enterprise Data Center Network

S5800-48F4S can not only provide access points for high density GE servers, but also 4 x 10GE uplink points to Aggregation or Core switches.

S5800-48F4S 48 port 10GE SFP switch application

Figure 2: Using S5800-48F4S for data center access network topology as ToR access devices.

·Carrier’s Metro Network

S5800-48F4S is ideal for service provider Metro Ethernet access deployment, allowing providers to offer convergent application portfolio to their enterprise or individual users. Typically S5800-48F4S SFP switch is installed in a building basement, which serves many customers in the branch building or at the head office. To use SFP switch, corresponding modules are required for connecting cables with SFP ports. Table below lists the FS supported SFP and SFP+ modules for S5800-48F4S SFP switch SFP ports and SFP+ ports.

FS SFP modules for SFP switch

Conclusion

From the above illustration, SFP port on SFP switch is a port type to cater for high-capacity long-reach networks. It can be either connected to Ethernet copper cable with RJ45 SFP module, or optical fiber cable with fiber SFP module. Thus it supports both short and long reach distance. It also owns the pros of small size, hot-pluggable capability, high reliability and security. FS S5800/S5850/S8085 series SFP switches are high compatible with mainstream band switches such as Cisco and Juniper. If you have any need in SFP switch, FS.COM can be a good choice.

8 Port Gigabit Switch Recommendation

For the issue of choosing an optimal Ethernet switch, one usually refers to its demand for network capacity (1G, 10G, 40G or 100G) and port quantity. As for gigabit switch, a 16, 24 or 48 port switch is commonly used for small and medium sized enterprises (SMEs) to achieve both high performance and cost-efficiency. But how about 8 port gigabit switch? Are there any recommendations for it? This article will recommend 4 different 8 port gigabit switches for you in terms of managed or unmanaged and PoE or non-PoE.

Managed 8 Port Gigabit Switch Recommendation

·Non-PoE: D-Link DGS-1210-10 ($88.99)

DGS-1210-10 comes with 8 x 10/100/1000 Mbps gigabit ports and 2 x SFP ports. It is the latest generation of D-Link gigabit web smart non-PoE switch, characterized by D-Link Green 3.0 technology to save energy under non performance sacrifice. Moreover, for concerns of management and security, DGS-1210-10 8 port gigabit switch centralizes the pros of easy management, D-view 6.0 system and auto monitor VLAN (ASV) capability. This partly managed smart switch takes one step above “dumb” switch as well one step behind fully managed switch, thus it has absorbed both strengths. As a compromised gigabit switch, it is specially designed for SMEs.

D-Link DGS-1210-10 managed 8 port gigabit switch

Figure 1: D-Link DGS-1210-10 managed 8 port gigabit switch.

·PoE: FS S1130-8T2F ($159)

FS S1130-8T2F PoE+ managed 8 port gigabit switch comes with 8 x 10/100/1000 MbpsBase-T RJ45 Ethernet ports, 1 x console port and 2 x SFP ports. This fully managed PoE+ switch features long transmission distance of up to 120km, strong resistance to electromagnetic interference and superior performance stability. Besides, for concerns of noise, it is whisper-quite designed with no fans. It can easily placed in a rack, on a wall or on desktop, and is best fit for PDs such as WAP, IP phones and weather-proof IP cameras. FS S1130-8T2F has a maximum power consumption of 130W. If higher power budget is in demand, you can go for FS S1250-8T2F 8 port gigabit switch, which is up to 250W for your network expansion while only $30 extra cost is offed by FS.COM.

Unmanaged 8 Port Gigabit Switch Recommendation

·Non-PoE: Netgear GS108 ($46.99)

Netgear GS108 is an auto-switching 10/100/1000 Mbps Ethernet switch, targeted at business with plug-and-play and no-configuration demand. Netgear GS108 comes with 8 switched ports for PCs, severs and switches and a sturdy metal enclosure, with IEEE802.3az support for power savings and traffic optimization. It is also fanless designed to ensure silent and reliable operation. Though this desktop 8 port gigabit switch costs a little more than Linksys SE3008 ($35.99), the advantage of ProSAFE Lifetime Warrenty does makes it worth that.

Netgear GS108 8 port gigabit switch

Figure 2: Netgear GS108 unmanaged 8 port gigabit switch.

·PoE: TP-Link TL-SG 1008p ($59.99)

TL-SG 1008P unmanaged PoE 8 port gigabit switch comes with 8 x 10/100/1000 Mbps RJ45 ports and 4 PoE ports with maximum power budget of 55W. It is featured with no configuration need, overload arrangement, fanless design, high efficiency and limited lifetime warranty. The 4 PoE ports can supply powered devices (PD) such as wireless access points (WAP), IP cameras and IP phones with one single cable for both power and data transmission. It is best fit for expanding home and office network.

TP-Link TL-SG 1008p 8 port gigabit switch

Figure 3: TL-SG 1008P unmanaged 8 port gigabit PoE switch.

Summary

This article focused on the recommendation of 8 port gigabit switch for different requirements: unmanaged non-PoE switch, unmanaged PoE switch, managed non-PoE switch and managed PoE switch. Each one has its features in terms of different switch types and vendor characteristics. For managed PoE 8 port gigabit switch consideration, FS.COM will be a good place to go.

Related article: How to Choose 8 Port Gigabit Switch?

Buy Gigabit Switch: 2 x 24 Port Switch or 1 x 48 Port Switch

As for the issue of network switch setups for more than 24 connections, we usually stick in the dilemma to buy Gigabit switch: deploying 2 x 24 port switch or 1 x 48 port switch, which one to take? We are here to weight the 2-24 port gigabit switch and 1-48 port gigabit switch pros and cons for your selection guide.

Buy Gigabit Switch: 2 x 24 Port Switch or 1 x 48 Port Switch Overview

Budget is always a big concern before touching other factors. It is somehow a common sense that 2- 24 port switch price is lower than 1- 48 port switch price. Thus many people go for 2 x 24 port switch. In fact, that’s not always the same case. For example, buying 1 48 port switch ($499.00) S3800-48T4S will save you over 200 dollars than 2 24 port switch ($369.00) S3800-24T4S from FS.COM. For people pursuing high performance but with tight budget, just go for FS S3800-48T4S 48 port managed switch, which best satisfies your dual demands. To help you buy gigabit switch: 2 x 24 port switch or 1 x 48 port switch, table below shows the model comparison of FS.COM 24 port gigabit switch and 48 port gigabit switch.

specification of 2 x 24 port switch or 1 x 48 port switch

Buy Gigabit Switch: 2 x 24 Port Switch Solution Pros and Cons

For concerning about 2 24 port switch solution, one should know its pros and cons compared to 1 48 port switch. First, having 2 x 24 port switch gives you more sense of security. If one 24 port gigabit switch goes down, users in another switch will still be running. However the collapse of the sole 48 port switch will lead to the whole network’s breakdown. Second, 2 x 24 port switch solution provides more flexibility for separate placing. If you need to connect different devices in different floors or offices, 2 x 24 port switch is the way to go. However, it is noted that this solution has the cons of higher potential bottleneck, less available ports, extra uplink port demand, space consumption and management inconvenience.

Buy Gigabit Switch: 1 x 48 Port Switch Solution Pros and Cons

Apart from the cost-efficiency of 1 x 48 port switch offered by FS.COM, there are other cases 1 x 48 port switch is preferred over 2- 24 port switch. First, 48 port gigabit switch is natural for high-performance network environments. In 2 x 24 port switch solution, due to one extra uplink port for connecting the 2 24 port gigabit switches, a potential bottleneck/congestion is created and only 46 ports are left available for devices. So in cases only one uplink is available, 48 port switch is the choice. Second, 48 port gigabit switch managed has the pros of ease of management and rackspace saving even if 2 x 24 port switch are stacked. Third, one 48 port switch costs less power than the 2 x 24 port switch strategy. However, this solution will lose the redundancy for network outages and separate placing flexibility.

Buy Gigabit Switch: 2 x 24 Port Switch or 1 x 48 Port Switch Selection Guide

After explaining the 24 port gigabit switch and 48 port gigabit switch respectively, we made the following conclusion. For most concerns about performance, one should go for 1 x 48 port switch instead of 2 x 24 port switch, which owns lower potential congestion at the uplink port and can travel at the wire speed. For concerns of space saving, management convenience and more port numbers, also go for the same way. But in terms of redundancy and separate placing, one should better take 2 x 24 port switch.

Table below lists the edges for selecting one solution over the other.

Solution 2 x 24 Port Switch 1 x 48 Port Switch
Edges over the other Redundancy: one more backup switch in network outages High performance: wire speed; power saving; less potential congestion
Separate placing: different floors or offices More available ports: saving extra uplink for connecting two switches
Generally less cost Rackspace saving; Ease of management

In some cases requiring for special conditions, pay attention to their built-in features when you buy gigabit switch. For instance, in quiet places such as classrooms, take fanless 2 x 24 port switch because 1 x 48 port switch can be noisy due to equipped fan radiator.

Conclusion

For buy Gigabit switch: 2 x 24 port switch or 1 x 48 port switch, it’s extremism to simply say which one is superior or inferior. We decide 2 24 port gigabit switch or 1 48 port gigabit switch to buy by the factors we are most concerned about and the respective edges over the other in each case. No matter you need 24 port switch or 48 port switch, FS.COM would be a good place to go.

Related Article: 2 * 8 Port Gigabit Switch or 1 * 16 Port Gigabit Switch

Patch Panel vs Switch: What’s the Difference?

In network setups we see everything is plugged into a switch, but before that fiber cables are also connected to another supply – patch panel. Thus one question is often confusing: patch panel vs switch: What’s the difference and what’s the significant function of them respectively?

What Is Patch Panel?

Patch panel (fiber optic patch panel, fiber optic enclosure) is a terminate unit of network ports centralized together. It is a cable management solution component used to organize fiber cables and keep everything neat for a clean wiring closet. In data centers, a mass of cable wires scattering all over and mixed together can be bothersome, in this case a patch panel is indispensable and rather helpful. It not only offers ease of management, but also protect the terminations from being knocked. Besides the fiber optic patch panel, other cable management accessories including cable ties and cable labels are also used to keep cables tidy and easy for identification.

patch panel vs switch: fiber optic patch panel

Figure 1: This photo shows the application of patch panel by FS.COM for cable management in a data center.

What Is Switch?

Switch, commonly known as network switch, is an appliance in a data center that connects all devices (such as PCs and servers) as a whole to achieve intercommunication and data sharing between different network devices. It channels the incoming data from multiple input ports to the specific output port so as to deliver the data toward its destination. In Ethernet LAN or WAN, modern network switch usually determines which output port to use by network address.

patch panel vs switch: network switch

Figure 2: This photo shows the application of network switch by FS.COM in a data center.

Patch Panel vs Switch: What’s the Difference?

Table below shows the main difference of patch panel vs switch.

Name Patch Panel Switch
Price Cheap Expensive
Role playing Cable management tool:
Centralizing cable wires together; protecting fiber cables from damage.
Functional performance: connecting all devices together to receive and transmit exact messages to the target device end.
Form feature  fiber optic patch panel  network switch
·Role in Date Center

Comparing patch panel vs switch, we can make the following conclusion. Patch panel is nothing but an essential cable management tool, which exerts no functional influence to the performance of data transmission. However, a switch is an irreplaceable functional supply in network setups.

Why Patch Panel Is Commonly Set Up in Network Installation?

As mentioned above, patch panel has no effect on the data transmission process. Can it be omitted in fiber optic cabling? Or can wires just directly plugged to a switch? The answer is yes when you just deal with several fiber cables. However, Ethernet patch panel is a must in data centers where there are a large number of Ethernet drops. No doubt you don’t want to see all the things tangled together. A patch panel in place provide ease management of classification, maintenance, repair, installation and upgrades.

Conclusion

This article gave an brief introduction to patch panel and switch respectively and then discussed the differences between them. Patch panel vs switch : what’s the difference, and why is a patch panel commonly set up in network installation whereas a switch is already used? Can you answer these questions now? Simply put, patch panel is an essential cable management tool whereas network switch is a significant functional supply in data center. Both of them play important role in their respective positions.

Three Popular 10GBASE-SR SFP+ Modules Introduction

Time has witnessed the history and development of optical transceivers over the years. As we can see, the modern transceiver modules are moving in the direction of hot-pluggable design, smaller size, lower cost, lower consumption and higher speed. To cater for the above needs, 10GBASE-SR SFP+ transceivers have been frequently used in data centers. So what’s the options for 10GBASE-SR SFP+ modules? This tutorial will introduce three popular types for you: E10GSFPSR, 455883 b21 and J9150A.

10GBASE-SR SFP+ Module

10GBASE-SR is a 10 Gigabit Ethernet port standard specified in IEEE 802.3 Clause 49 for multimode fiber. It adopts 850nm lasers, which have the advantages of low cost, low power consumption, small size, and high density. The letters “sr” refer to “short reach”, but the exact reach distance depends on the fiber types matched with transceivers. For instance, when used over OM1 fiber, the 10GBASE-SR has a maximum transmission length of 33 meters. However, nowadays 10GBASE-SR SFP+ is commonly connected with OM3 or OM4 fibers to reach up to respectively 300 or 400 meters. E10GSFPSR, 455883 b21 and J9150A are three popular 10GBASE-SR 300m SFP+ modules.

This table shows the detail information of the three popular 10GBASE-SR SFP+ modules.

Form Type SFP+ Data Rate 10.3125Gbps
Wavelength 850nm Max Distance 300m over OM3 MMF
Interface LC duplex Laser VCSEL
Fiber Type MMF DOM Support Yes
TX Power -7.3~-1dBm Receiver Sensitivity Below -11.1dBm
Temperature Range -40~85°C (-40~185°F) Protocols MSA Compliant

E10GSFPSR

E10GSFPSR is a 10GbE SR SFP+ transceiver type designed for Intel Ethernet 500 and 700 Series Network Adapters. It has a hot-pluggable SFP+ print and is built-in digital diagnostic functions. This 10GBASE-SR SFP+ optics has the installation benefits of small physical dimensions, less power consumption, tighter bend radius, lighter weight and longer reach distance compared to copper alternatives. FS.COM offers Intel E10GSFPSR compatible 10GBASE-SR and also LR for adapting different data centers.

E10GSFPSR 10GBASE-SR

Figure 1: This photo shows the Intel E10GSFPSR compatible 10GBASE-SR SFP+ 850nm 300m DOM transceiver module manufactured by FS.COM.

455883 B21

455883 b21 stands for HPE Blade System c-class 10GBASE-SR SFP+ module, which supports the 10 Gigabit SR standard. 455883 b21 10GBASE-SR transceiver module is in SFP+ form-factor specially for HPE blade switches and severs. It has the feature of low power consumption, under 0.8W. “HPE” refers to the brand name of Hewlett Packard Enterprise, which is the original equipment manufacture (OEM). The well-known brand superiority attracts customers to buy their expensive SFP+. However, FS.COM is a third-party vendor who can provide the exact same specifications and functions as the original 455883 b21 while offering a cost-effective price.

455883-B21 10GBASE-SR

Figure 2: This photo shows the HPE Blade System 455883 b21 compatible 10GBASE-SR SFP+ 850nm 300m DOM transceiver module manufactured by FS.COM.

J9150A

J9150A is a SKU code compatible for HPE X132 10G SFP + LC SR transceiver module, which is consistent with the 10 Gigabit SR standard in SFP+ form-factor. It is typically applied to some HPE Aruba switch series rather than HPE blade servers. However, the high compatible option of J9150A allows it to be used on blade switches too. HPE J9150A compatible 10GBASE-SR SFP+ is a compatible transceiver module produced by FS.COM under strict quality system verification. Meanwhile, it is supported on a wide range of HPE equipment and commonly used in data and optical networks.

J9150A 10GBASE-SR

Figure 3: This is a demonstration of FS.COM J9150A fits into HP 5900 Series Switch (JG510A).

To sum up, E10GSFPSR, 455883 B21 and J9150A are three most popular 10GBASE-SR SFP+ modules sharing much commons in manufacturing specifications and functional performance, such as 850nm wavelength, 10GbE data rate, 300m short reach and low consumption for using VCSEL lasers. However, they are different from original vendor brands and matched equipment.

Table below shows the detail information.

Type Brand Supportability Matched Equipment
E10GSFPSR Intel A wide range of Intel equipment Intel Ethernet 500 and 700 Series Network Adapters
455883 B21 HPE A wide range of HPE equipment HPE Blade switches and severs
J9150A HPE A wide range of HPE equipment Some HPE Aruba Switch Series

Conclusion

This article introduced three popular 10GBASE-SR SFP+ modules: E10GSFPSR, 455883 b21 and J9150A. First illustrated their general characteristics as 10GBASE-SR SFP+ modules. Then explained each one respectively. People choose what to use according to exact matched equipment and their personal requirements.

Cat5e vs Cat6 RJ45 Cable

Ethernet cable has never stopped its development to cater for the ever increasing demand of higher performance data center. Cat5e and Cat6 RJ45 cables are two most commonly used Ethernet cables in current market. As their names implied, the difference between them are defined by the number and letter “5e” and “6”. What do these terms mean? Cat5e vs Cat6 RJ45 cable: What’s the difference? This article is dedicated to answering this question.
cabling of Cat5e vs Cat6 cable

Figure 1: Cabling of Cat5e vs Cat6 RJ45 cable.

Cat5e vs Cat6 RJ45 Cable Overview

Cat5e and Cat6 are two different Ethernet cables classified by standard categories. The “Cat” refers to “Category of cable”, and the terms “5e” and “6” refer to different standard of category.

What Is Cat5e Cable?

Cat5e cable (Category 5e cable) is an enhanced version of Cat5. While inheriting the construction and 100MHz bandwidth of its predecessor, Cat5e improves performance by introducing optimized specifications in data rate and crosstalk defense. It transfers data at 10 times the speed of Cat5 cable, up to 1000Mbps. It supports Gigabit Ethernet and frequently used in home networking environment with various lengths and premise wiring.

Cat5e UTP Ethernet patch cable

Figure 2: This photo shows a Cat5e UTP Ethernet patch cable.

What Is Cat6 Cable?

Cat6 cable (Category 6 cable) is a standard twisted-pair cable for Ethernet and other network layers. It has a 250MHz bandwidth and can rate up to 10Gbps in a limited distance of 55 meters. It can also reach to 100 meters (328 feet) at a slow rate of 1000Mbps. For its high speed, Cat6 cable is widely used to handle 10GbE. Moreover, Cat6 has excellent capability to reduce crosstalk due to improved shielding and twisted-pair cable design.

Cat6 UTP Ethernet patch cable

Figure 3: This photo shows a Cat6 UTP Ethernet patch cable.

Cat5e vs Cat6 RJ45 Cable: What’s the Difference?
Category Cat5e Cat6
Interface RJ45 RJ45
4 twisted-pair Wires Yes Yes
Bandwidth 100MHz 250MHz
Maximum Length 100 m 100m in slow network (≦1000Mbps);
55m in high network (10Gbps)
Data Rate 1Gbps 10Gbps over short distance (33-55m);
1Gbps within 100m
Crosstalk Far Less than Cat5; More than Cat6 Less crosstalk; high SNR
Cost cheaper 20% higher

As the table shown, although Cat5e and Cat6 RJ45 cable share commons in RJ45 connector and construction feature of twisted-pair copper wires, they are totally different standards of Ethernet cable. Cat5e RJ45 cable has lower level of transmission performance, while Cat6 RJ45 cable is optimized with a 250MHz bandwidth, higher data rate and stronger resistance to crosstalk and noise. The following passage will focus on the illustration of their functional differences.

·Crosstalk

Both Cat5e and Cat6 are comprising of 4 twisted-pair copper wires with a longitudinal separator to isolate them. This design can reduce electromagnetic interface among different wires. Compared with Cat5e, while providing equal level far end crosstalk (FEXT), return loss and insertion loss, Cat6 features lower near end crosstalk (NEXT). Simply put, Cat6 cable have high SNR (Signal Noise Ratio), which provide less noise, fewer errors and higher data rate in signal transmission.

·Date rate

Cat5e cable is limited at a 100MHz bandwidth, while Cat6 cable has a high bandwidth of 250MHz, which leads to different data rate. Cat5e can reach up to 1Gbps at a distance of 100 meters. The data rate of Cat6 varies based on its maximum length. Over long distance transmission within 100 meters, maximum data rate of Cat6 is 1000Mbps. In short length limited in 55 meters, it can support 10 Gigabit Ethernet. It is noted that in high crosstalk condition a transfer distance only within 33 meters is available.

Conclusion

This article made a comparison and contrast between Cat5e vs Cat6 RJ45 cable. While finding some similarities, it focus on their functional difference: crosstalk resistance ability and data rate. Cat6, as a descendant of Cat5, it owns higher standard of SNR and data rate, which gives it an edge in higher performance conditions required 10 Gigabit Ethernet.