Månadsvis arkiv: april 2018
Nowadays, smart home and home automation are becoming more widespread. Small and medium enterprises have been developing vigorously. All of these phenomenons greatly promote the usage of Gigabit switch. For network engineers, Gigabit switch is an essential component in their network construction and can be an inexpensive and easy way to expand network in home and small business. This article is mainly conducted to popularize the generic concept and different types of Gigabit switch so as to help choose a suitable one for your networking.
Concept of Gigabit Switch
In computer networking, a Gigabit Ethernet switch connects multiple devices, such as computers, servers, or game systems to a Local Area Network (LAN). It also empowers devices like 4K HDTVs and DVRs to connect directly to the internet without depending on Wi-Fi. With the ability of speeding up data transfer, it results in faster response time and better frame rate. In general, a Gigabit Ethernet switch expands network capacity via extra ports.
Types of Gigabit Switch
There are many different types of switches in the market. According to the quantity of devices you have and the people who use the network, you need to choose relevant switch. If you want to expand your network without big expense, the basic Gigabit Ethernet switch is a great choice for small and medium environments to boost performance and efficiency of network, such as 16-port and 24-port Gigabit switch. For home users, a 8-port Gigabit switch is enough. Here, we just introduce the basic concept of managed and unmanaged switch, PoE switch and stackable switch to help distinguish the functions of different types of Gigabit Ethernet switch.
- Unmanaged Switch
Unmanaged switch is regularly used in home networking, small companies and businesses. A basic unmanaged gigabit Ethernet switch has no user configuration. So it is simple to set up. If you want to add more Ethernet ports, you can use these plug and play types of switches in your networking.
- Managed Switch
Comparing to unmanaged switch, the primary advantage of managed switch is that it can be customized to enhance the functionality of a certain network. It can also be monitored and adjusted in some aspects. It adjusts speeds, monitors traffic and report network activity. Although a managed switch is typically more expensive than an unmanaged switch, it offers greater flexibility.
- PoE Switch
PoE Gigabit switch is a network switch which applies Power over Ethernet technology. When connected with multiple network devices, PoE switch can support power and data transmission over one network cable at the same time. It will extremely simplify the cabling process.
- Stackable Switch
A stackable switch is a network switch that is fully functional operating standalone. But it can also be set up to operate together with one or more network switches. Since it can be configured, the stack of switch will automatically reroute in case of a port or cable failure.
This article concisely introduces four types of switches in networking: unmanaged switch, managed switch, PoE switch and stackable switch. When Gigabit switch is in an selection, the number of users your network supports should be given the utmost attention to. Broadly speaking, for small families, a 8-port Gigabit switch is adequate. While for SMBs or large enterprises with many network devices, a 24-port Gigabit switch can be used in offices to connect desktops or laptops. On the contrary, a 24-port Gigabit switch with a better prospect is more applied in small business network. Quality and standards are the foundation of FS.COM, if you have any need, FS.COM will always be your best choice.
Along with the further development of virtualization technology, the demand for more bandwidth and data transmission to satisfy the ever-growing number of operating systems and applications is getting higher and higher in data center today. As a result, a cost-efficient method to provide more bandwidth rises in response to the proper time and condition. Popularization of SFP cable has been the trend of data center interconnection applications and can be ascribed to the domination of Cat5e copper cabling and 1000BASE-T over the years. So in this article, we will mainly focus on the brief introduction to the types and usage of SFP cable.
What Is SFP Cable?
SFP cable, sometimes called as 10G SFP+ cable, SFP+ DAC twinax cable or SFP+ AOC cable, is a kind of high speed cable with Small Form Factor Pluggable Plus on either end. It is commonly used for connections between servers and switches. SFP twinax cable replaces two optical modules and an optical fiber with a twinaxial copper cable assembly which can offer higher density, lower cost and power 10 Gigabit Ethernet solution than other cable types, such as 10GBASE-CX4 and CAT6/CAT6A 10GBASE-T.
Types of SFP Cable
The SFP cables can be classified into two kinds: 10G SFP+ DAC cable and 10G SFP+ AOC cable.
- 10G SFP+ DAC cable
Direct attach cable (DAC) is a type of sheathed high-speed cable with SFP connectors on each termination. It contains either an active or passive twinax cable. The difference between them is that an active twinax cable has active electronic components to improve the signal quality while a passive twinax cable is just a straight “wire” with few components.
- 10G SFP+ AOC cable
10G active optical cable (AOC) assemblies are high performance and cost effective I/O solutions for 10G Ethernet and 10G Fibre Channel applications which can also be applied to an alternative solution to SFP+ passive and active copper cables and provide better signal integrity, longer distances and superior electromagnetic immunity.
How SFP Cable Is Used?
Since 10G network is extensively utilized in today’s data center, 10G SFP cables are normally used in interconnect applications, such as server to switch or switch to switch interconnection.
- 10G DAC SFP+ Cable: Server to Switch Connectivity
For any short range connection which measures as small as 5 m to 10 m, direct attach cable offers easier and more affordable solution. Servers are typically connected to a switch within the same racks. DAC twinax cable supports link length up to 7 m, making it ideal for servers to switch connections.
- 10G AOC SFP+ Cable: Switch to Switch Connectivity
Varying from DAC, which is often applied in short distance, AOC SFP+ cable can achieve transmission distance up to 100 m, so they often used in switch to switch connections.
Generally speaking, different kinds of 10G SFP+ cables are required for different distance and application. 10G DAC is excellent for short distance applications within racks, while AOCs are suitable for inter-racks connections between ToR and EoR switches. Fiberstore offers high speed direct attach solution for data center interconnection, especially the SFP+ direct attach cables for 10GbE. Moreover, they offer a good variety of high speed interconnect DAC assemblies including 40G/56G QSFP+ cable and 100G QSFP28 cables to satisfy the demands from 10G to 100G interconnection.
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