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2017年1月30日星期一

Has Wireless Router Killed Ethernet Cable in Home Network?

As home networks have increased in popularity, so has the wireless router. The lack of clutter and the convenience of being able to connect to the Internet almost anywhere means WiFi is the first choice for anyone who is looking to go online. The blistering connection speeds offered by today’s WiFi standards do cause the downfall of wired Ethernet cable and make it appear a bit of a relic, but has wireless router really killed Ethernet cable in home network yet? Read the following text, and you can get the detailed information.

What Is Wireless Router?
Wireless router as shown below is an electronic device that works as a router, meaning it sends data from the Internet cable to a device, and as a wireless access point, so this data can be shared through radio signals instead of another cable. It can function in a wired local area network (LAN), in a wireles-only LAN, or in a mixed wired/wireless network, depending on the manufacturer and model.

wireless-router infrastructure

What Is Ethernet Cable?
An Ethernet cable is one of the most popular forms of network cable used on wired home networks to connect devices on local area network (LAN), such as PCs, routers, and switches. Ethernet cable is physically manufacturer in two basic forms called solid and stranded. Solid Ethernet cable offers slightly better performance plus improved protection against electrical interference, which is more commonly used on business networks, wiring inside office walls or under lab floors to fixed locations, while stranded Ethernet cable is less prone to physical cracks and breaks making them more suitable for home networking. Cat5, Cat5e and Cat6 with rj45 plug are commonly used Ethernet cable types in home network. The following image shows different color-coded Ethernet cables.

different color-coded Ethernet cable

Wireless Router VS. Ethernet Cable
WiFi-vs-Ethernet

Transmission Speed
When wireless router first moved into the mainstream, it was mostly based on the 802.11g standard, which offers maximum theoretical speeds of 54Mbps, and far less in practice. Thanks to new standards, like 802.11ac and 802.11n, which offer maximum speeds of 866.7Mbps and 150Mbps, respectively, but this still falls well short of the performance offered by Ethernet cable, which can produce speeds anywhere from 100Mbps to 1G and even 10G, depending on different Ethernet cable types. For example, a Cat6 cable can support the transmission distance up to 100 meters at the data rate of 1G, and when crosstalk is in an ideal solution, it can support 55 meters at the data rate of 10Gbps.

Latency
Connection quality just isn’t about raw bandwidth. Latency is also a big factor. Low latency becomes so important since the adoption of private cloud applications increases. It’s beneficial for ensuring fast responses time and reducing CPU (center processing units) idle cycles so that improves efficiency. This is also known as “ping” in online game circles. If you’re playing online games and need reaction time to be as quick as possible, you’re probably better off with a wired Ethernet cable, since it offers the advantage of much lower latency.

Security
Security is another big factor when comparing wireless router and Ethernet cable. The data on an Ethernet cable can only be accessed by devices physically attached to the network. These devices, including laptop at one end and router at the other end, need firewall to protect them to make your wired home network safe. However, with WiFi, the data is in the air. If you’re using an open network, such as in a coffee shop, then all the data you send and receive can be intercepted, including personal information and login details, which could be easily stolen by hackers or identity thief.

Interference
WiFi is susceptible to countless environmental factors. Radio waves can be blocked by walls and floors. Other wireless devices can interfere with the signal, including things you wouldn’t think of, like microwaves and cordless phones, as well as nearby routers using the same channel. These inferences result in inconsistent performance. As you move around your home, you can see the strength of your WiFi network connection falls and rises, affecting speed accordingly. Ethernet Cable can also experience signal degradation, but it’s easier to manage and avoid. And, once you’ve got things set up properly, they should just continue to work without experiencing seemingly random signal degradation.

Conclusion
Although wireless router has gained much popularity with its convenience, Ethernet cable which takes some unique advantages still cannot be replaced. This post does not mean that you should ditch one over the other. A good home network will often have both wireless and wired components. Ethernet cable is great for high-speed transfers on desktop or other devices that do not move. Your smart phone, tablet, or laptop will benefit from a wireless router that has been properly configured to ensure a secure browsing experience.

2016年10月6日星期四

Cat5e VS Cat6 Cable – Which One Will You Choose?

With low cost, easy operation and great flexibility, twisted pair cables are widely used in telephone communications and modern Ethernet networks. Nowadays, there are many categories of twisted pair cables available on the market, such as cat3 cable, cat5/cat5e cable, cat6/cat 6a cable, and cat7 cable, etc. Today, I’d like to give a brief but complete discussion about two common categories—cat5e and cat6, which are so similar to each other that the general public may feel confused to know which cable is suitable for their tasks.

What Is Cat5e Cable?
Cat5e is an enhanced specification of the cat5 standard which was introduced to the market in early 2001. While similar to cat5 cable in appearance, cat5e cable introduces some new links in the equation. For one thing, cat5e cable uses four pairs of copper wire rather than the two that cat5 cable relies on. In addition, the wire pairs are twisted more tightly to eliminate crosstalk. Due to its internal upgrades, including faster transmission rate and higher bandwidth, cat5e cable has become the most common type of cabling found in modern homes and offices for Ethernet purposes. The following picture shows Cat5e cable.

cat5e patch cable

What Is Cat6 Cable?
Only a year after cat5e was introduced, a new standard—cat6 was born. The cat6 standard improved upon the cat5e by increasing frequency responses, tightening crosstalk specifications, and introducing more comprehensive crosstalk specifications. Usually, cat6 cable (shown in the picture below) consists of four unshielded twisted pairs (UTP) terminated with RJ45 connectors, which is often used for 10Base-T (Ethernet), 100Base-TX (Fast Ethernet), 1000Base-T (Gigabit Ethernet) and 10GBase-T networks.

cat6 patch cable

Differences Between Cat5e and Cat6 Cables
Transmission Speed
When we think about advances in cabling, transmission speed is the first thing that should be taken into consideration. As we mentioned previously, cat6 cable can be used to power 10GBase-T or 10G Ethernet, while the maximum speed that cat5e cable can support is 1GBase-T or 1G Ethernet. This is because cat6 cable performs up to 250 MHz, which is more than twice that of cat5e cable (100 MHz). 

Distance
Since cat5e and cat6 are made of copper wires, both of them are only available for short distance data transmission. If the cable is used for lower data rate transfer, both cat5e and cat6 cable can support the length of up to 100 m. However, when the data rate achieves the maximum speed, cat5e cable can reach 50 m, while cat6 cable can only reach 37 m.

Cost
In general, cat6 cables are 10 to 20% more expensive than cat5e cables. However, cables are comparatively cheap which makes the cost differences between cat5e and cat6 cables come to be very small portion of the total network budget. Besides, the speed boost offered by cat6 cables usually makes the price premium worthwhile, especially in long run transmission.

Reliability
When installing a network, many users may concern whether there will be electrical interference that can negatively influence the performance of their network. Compared with cat5e cable, cat6 cable has improved reliability that it can deter signal interference from affecting your network. You’ll be able to have a longer and more reliable period of uptime, regardless of how close you are to other network connections in your area. The following table shows some differences between cat5e and cat6 cables.

Cat5e-vs-Cat6

Conclusion
Cat5e and cat6 cables are two commonly used categories of twisted pair cables. They are different from supporting distance, transmission speed, cost, and reliability. After reading this post, hope you can choose the right one for your project. If you need cat5e, cat6 or other types of twisted pair cables, FS.COM is a good place to go. Besides these copper cables, we also supply a wide range of fiber patch cables with different connectors, such as SC, FC and LC connector. For more information, please visit FS.COM.