Definition and function HUB on Computer Networks

Definition and function HUB on Computer Networks

Notivku, Below we will explain the definition of HUB and HUB functions in Computer Networks. In building or creating a computer network, many different components are needed that are connected to each other. These components work in accordance with its function so that there is a communication path between computers,laptops, printers and other devices. After the establishment of a computer network,each device and tntunya will provide many benefits to support one's work so that it is easier, faster and more efficient.

what is a HUB ?

A Hub is a network device that works at OSI layer 1, The Physical Layer. So that the Hub only works as a connector or concentrator, and only strengthens the signal in the Unshielded Twisted-Pair (UTP) cable. The Hub does not know MAC Addressing or Physical Addressing so it cannot sort out the data that must be transmitted so collision cannot be avoided from the use of the Hub.

Hub functions include:

• Facilitate the addition of omission or addition of workstations.
• Increase network distance (can function as a repeater).
• Provides / facilitates flexibility by supporting different interfaces (Ethernet, tit ring and FDDI)
• Features that offer fault tolerance (isolation damage).
• Provide centralized management (information collection, diagnostics).

Definition and function HUB on Computer Networks

Types of HUB

Basically, hubs are divided into two types, namely active hubs and passive hubs.

  1. An active HUB is a HUB that has the ability to amplify a signal or commonly referred to as a repeater. This type of HUB is able to regenerate incoming signals from a computer which is then transmitted back to other computers. An active HUB will be very useful for connecting two or more computers over a considerable distance.

 2. Understanding passive hubs is a HUB that only serves to share the transmission signal that goes to the port of the connected computer port. By using a passive HUB it is possible to add a connected computer unit on condition that the distance of the computer unit to other computers is not too far.

Weaknesses or shortcomings of the HUB

• Classified as Layer 1 equipment in the OSI model (Physical layer).
• Cannot read data packets.
• Can not know the source and Destination data.
• It only plays the role of receiving and forwarding incoming data to all equipment on the network including those that send data.

 

Note :

The speed of data on the HUB depends on the number of devices or computers plugged into the port that is in the HUB, so many computer network users leave the HUB and replace it with a Switch. What is a SWITCH on a computer network we will discuss in the next JavaNetMedia article.

Thus Definition and function HUB on Computer Networks. Hopefully it can provide an overview and computer network science to all of us.