Switches Are: Functions, Types and How They Work (Complete)
Switches Are: Functions, Types and How They Work (Complete) - In the discussion this time About Knowledge will review about the Switch. A switch is a device or device on a network that acts as an invisible link from multiple networks by sending them based on MAC addresses.
Switches Are: Functions, Types and How They Work (Complete)
Not only that, we will also explain about several switch functions, their types and how the switch works. For more, let's look at the explanation below.
Definition of Switches
Switch is a network switch or a device used to run a connecting link no visible segmentation of many networks by redirecting by viewing addresses MAC. Switches on a network can be used to connect computers or barriers in a limited area. Switches can also work at the connected data layer (data link). The way this Switch works is similar to a bridge, but a Switch has several ports which makes it often referred to as a multi-port bridge.
Definition of switching
Switching is an electronic system that can be used to connect communication lines. Switching network is a network that allocates a dedicated circuit between nodes and terminals that are used for users to communicate.
Dedicated circuits cannot be used by other callers until they are disconnected, and new connections can be established. Even if no communication is taking place within a dedicated circuit, the channel is still unusable for other users. Channels that can be used for new telephone connections are called idle channels.
A method used to establish, monitor progress, and close a connection is to use a separate channel for control purposes, for example on links between telephone exchanges using CCS7 used for communication of call setup and control information and using TDM as data transport across the circuit the.
Switch function
The switch functions to manage traffic in a computer network, the switch is responsible for transferring a data packet so that it reaches the destination with the right device. This switch also functions to find the best and optimal path to ensure the efficient delivery of data packets to their destination.
Types of Switches
In general, switches are divided into two types according to OSI (Open System Interconnection), namely where there are two layer two and layer three switches.
- layer 2 switches is a switch whose data link layer operations reside at the OSI model layer. This type of switch forwards packets by looking at the destination MAC address, the switch can also function as a bridge between LAN (Local Area Area) segments. Network) because this switch sends data packets by looking at the address to be addressed without the need to know which network protocol used.
- layer 3 switches is a type of switch that is located at the network layer which is at the layer of the OSI model. Where this switch can forward data packets using IP Addresses. Layer 3 (three) switches can also be called routing switches or multilayer switches.
The several types or types of switches include the following:
ATM Switches
ATM (Asynchronous Transfer Mode) is a transfer mode made in the form of cells. The purpose of asynchronous is to repeat cells containing information from users that do not use periodicals.
ISDN Switches
ISDN (Integrated Services Digital Network) Switch or Frame Relay Switch Over ISDN is often found in Service Providers which works the same as a switch, but there are differences in the interface used in the form of an ISDN card or ISDN routers.
DSLAM Switch
A Digital Subscriber Line Access Multiplexer (DSLAM, or read as dee-lam) creates a telephone line to make a fast connection to the internet. Digital Subscriber Line Access Multiplexer is a network device, which is found in telephone exchanges from service providers.
A service connected to several Digital Subscriber Lines (DSLs) subscribers with a high-speed internet backbone line using a multiplexing technique. By deploying DSLAMs to remote locations with telephone exchanges, telephone companies can provide DSL service to locations previously outside effective coverage.
Ethernet Switches
An Ethernet switch is a LAN interconnecting devices that operates at the data-link layer or layer two of the OSI reference model, which is basically a switch. it is the same as a bridge, but it also supports a larger number of connected LAN segments and has more management capabilities Lots.
Modern LANs are increasingly replaced by shared media enabled, with the installation of etherne switches and bridges in place of hubs and repeaters. These logical partitions i.e. traffic travels only a few network segments on the path between the source and the destination.
This will reduce the bandwidth so that the results of sending packets are not wasted on parts of the network that do not need to receive data. There are benefits from increased security (less use of being able to tap-in to other users' data).
Better management (so that you can control who receives what information i.e. virtual LANs) as well as to limit the impact of network problems. And also the ability used to perform multiple link operations in full duplec (more than half duplex is required to access concurrently.
Advantages And Disadvantages Of Switches
1. Excess
Switch is a very important part of a computer network, because the switch itself is the center of traffic on the network. If the switch is experiencing interference then all activities on the network will also be disrupted. The following are the advantages possessed by the switch including:
• The switch is able to check and analyze every data packet that has been received before forwarding it to the address to be addressed
• The switch is able to determine the destination address and the source of the data packets it has passed
• The switch is also able to forward each data packet quickly and precisely.
As with the HUB switch, it also has many ports that are used to connect computers with other network devices such as modems, access points, servers and so on. Switches also have various ports, some of which have 8 ports, 16 ports, 24 ports and many more. The more ports on the switch, the more expensive for the price.
2. Lack
- The price is slightly more expensive when compared to the HUB because the switch is the development of the HUB.
- HUB only has one collision control for all ports so this allows for data clashes or collisions because data transmission is only controlled by one collision
- You can only use straight cables, so if you want to use existing cross cables, you need to change them to become straight cables first.
- It takes a long time to check a package
How Switches Work
Switch as hardware (hardware) on the same computer network as HUB has a difference in that Switch is smarter even though the price is more expensive when compared to HUB.
The workings of this Switch are by receiving data packets from a port which will then see the MAC (Media Access Control) its purpose as well as to assist a logical connection with ports that are already connected to nodes and devices objective.
So that other than the intended port will not be able to receive data packets to be sent and will reduce data collisions or what is also called collisions. Each device that is connected to a certain port, its MAC address will be recorded in the MAC address table which will later be stored in the cache switch memory.
Thus has been explained about Switches Are: Functions, Types and How They Work (Complete), hopefully can add to your insight and knowledge. Thank you for visiting and don't forget to read other articles.
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