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What is Switch and how is it different from Hub?


What is Switch and how is it different from Hub?

Do you know what the switch is and what kind of network device is it? How does the switch work and what are its Advantages and Disadvantages? If you do not have much information about all these things, then you should read this article today’s network switch. Because in it you will get complete information about everything related to the switch.

Switch is a telecommunication device that is grouped according to a computer network component. Although switch is similar to a Hub but it has some built in advanced features. It uses physical device addresses to identify each incoming message so that it can deliver the message in its correct destination or port.

Like the Hub, the switch received message is not broadcast across the network, but before sending any message, it checks out which angle the system or port should be sent to. In other words, then switch directly connects the source and the destination so that the speed of the network increases significantly. Therefore, today I thought why you should explain to people what is the switch , which will help you to know it better. So let’s begin without delay.

Switch is a networking device that helps devices connect with each other in the network, so that they can transfer the data to the network. These network switches are completely identical, similar to network hubs, but a switch is more intelligent than hub.

Intelligence means that Network switch first examines incoming packets, determines its source and destination address, and then routes that packet to the right place accordingly.

This way, switch switches up to the right destination and protects bandwidth significantly. If we talk about the time now, then network switches are now available 10/100/1000 Mbit / sec as well as 10/100 Gbit / s ports. They operate in layer 2 of OSI Stack. It is also often thought of as a multiport bridge.

What are the methods used by switches?

Switches mainly use 4 methods to further forward the packet. So let’s know ahead of them.

1. Store and Forwarding – In this method, the switches baffers each frame and performs checksum in them before forwarding them forward.

Cut Cutting – In this method, no error check is performed. It mainly reads the hardware address of the switch frame and then forward it.

3. Fragment Free – Actually, this method is nothing but the combination of both methods mentioned above i.e. Store and Forward and Cut through In this method, first checks the first 64 bytes of the frame by which the addressing information is received. From this, switch is known about the destination of the frame. Error checking is done by layer 3 and layer 4, which is typically a router of end device.

4. Adaptive switching – This is the last method that is used for the automate switching between the other three modes.

What are the Switch and Common Features of Hub
multiple RJ-45 ports
Power Supply
Having Connection Light

Types of Switch
Switches actually have connectivity points in an Ethernet network. These are small devices that receive data from multiple input ports and send it to a specific output port, which takes the data to the correct destination in that network. You can see many types of switches in the network, now let’s understand them

1. Unmanaged Switch
These switches are mostly used in home networks and small businesses as these are plug-ins and can be used immediately. These switches do not have to be watched nor do they need to be configured. They only require small cable connections. This allows the devices to connect with each other, such as computer to computer, or computer to a printer. Talk about Price then it is the cheapest compared to the rest.

2. Managed Switch
In this type of switches there are many types of features such as the security of the highest level, the precision control and the network’s full management. They are often used in organizations where there is a very large network and can be easily customized so that the functionality of any one network can be enhanced.

Although this is considered to be a very costly option, but their scalability makes them ideal for those networks that are growing. These are achieved only by setting up a simple network management protocol (SNMP).

There are also two types of Managed Switches:

(I) Smart Switches
These switches offer basic management features and they also have some capability to create some levels of security but they have a simple management interface if we compare it with any other managed switches. Therefore they are often called partially managed switches. They are mostly used in fast and constant LANs which support gigabit data transfer and allocations. They accept the configuration of VLANs (Virtual LAN).

(II) Enterprise Managed Switches
These switches have many features such as the ability to fix, copy, transform and display different network configurations. It has a web interface with SNMP agent and command line interface. They are also called fully managed switches and they are more expensive than other smart switches because they have more features which can be enhanced later, if needed. It is used in the organisations in which large quantities of ports, switches and nodes are being used.

3. LAN Switches
They are also called Ethernet switches or data switches. It is used to reduce network congestion or bottleneck, in which the package of data is only distributed to those who need it (only intended recipient). These are used to connect points in the LAN.

4. PoE Switches
PoE switches are used in PoE technology. The full form of PoE is Power over Ethernet, it is a technology that integrates data and power into the same cable and it allows the power to power the device so that it receives the data in parallel of power. Therefore these switches offer much better flexibility by simplifying the cabling process.

Switch definition
Switch to the language of electronics is an electronic device that breaks the circuit and carries the current into different conducts. In the same language of networking, switches are called those devices which are used to create a network establishment.

What is the main role of Network Switches?
Whether LAN network is large or small, many switches are needed only for network connectivity. Many types of switches such as packet switches and network switches are an integral part of any network.

The main functions of switches are to help connect all those types of networks whether they are traditional LANs or SOHO networks. Here SOHO means a small enterprise that has 10 or more people. Single all purpose switch is used in such small networks.

This single switch works to connect DSL, WiFi and cable router simultaneously. Typically, if done, the switches operate in the data link layer of the OSI model. Switches that can operate in all different OSI layers are called multi layer switches. These multilayer switches can easily operate in the data link layer, physical layer, transport and network layer.

Switches are of many types and they also contain many ports. With the help of these ports, they help them connect and maintain a network of different networks such as Fiber Channel, ATM and most commonly in Ethernet. Layer 3 or network layer switches the OSI model to connect with the network and to process the data.

Network Switches are very helpful in establishing connection with all types of small large networks. For example, in a large organization where many LANs are used to connect with a large WAN, the WAN router is often connected via switches only.

What is the difference between hub and switch
A switch is used to network multiple computers together. Switches designed for the consumer market are often small, flat boxes with 4 to 8 ethernet ports. These ports can easily connect with computers, cable or DSL modems, and with other switches. High-end switches have more than 50 ports and are often rack mounted.

Switches are actually more advanced than hubs and besides this they are less capable than routers. Unlike hubs, switches can easily limit the traffic to and from each port, so that each device connected with the switch can get the bandwidth of a sufficient quantity with the switch. So you can think of a switch like a “smart hub.” But, switches do not provide features like firewall and logging capabilities such as routers show up.


By the way, routers can be configured with the help of software (typically via a web interface), so switches function in the same way as if their hardware is designed.

What are the Advantages of Switches
Well Switches have many benefits and benefits, let us know about them:

  1.  It is used to increase network’s available bandwidth.
  2.  The use of individual host PCs can be reduced by the workload.
  3.  It helps in increasing the performance of the network.
  4.  Networks that use switches have very few frame collisions. That’s because switches create collision domains in each connection.
  5.  These are more intelligent than Hubs.
  6.  Switches can be directly connected with Workstation.

What are the Disadvantages of Switches
Let’s try to know about the disadvantages of switches:

  1.  These are very expensive, compared to network bridges.
  2.  Network connectivity issues are very difficult to trace through network switch.
    Broadcasting traffic can be a more troublesome task.
  3.  If switches are in promiscuous mode, then they are more vulnerable for security attacks, for example capturing spoofing IP address or Ethernet frames.
  4.  Proper design and configuration is needed to handle multicast packets.
  5.  When it comes to limiting broadcasts, then they do not do as much good as the Routers do.

I hope you have my favorite article on this article. This is always my endeavor that the readers should be given full information about the type of switch so that they do not need to find any other sites or internet in the context of that article. This will also save their time and will get all the information in one place. If you have any doubts about this article in your mind or you want some improvement in it then you can write down comments for it. If you liked the difference between this article hub and switch or got some learning, please share this post on social networks such as Facebook, Google+ and Twitter.

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