Bridge and Hub: Definition, Characteristics, Functions, How It Works

Bridge dan Hub

In building a network, of course, you will need important network devices such as bridges and hubs. For people who work in the network field, you may already know what the difference is between a bridge and a hub. What is the difference between these two network devices? And what are the uses of bridge and hub? Let’s look at the following article.

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Penjelasan Bridge

Bridge is a network device that has different LAN computer network assignments. This bridge can connect computer network connections, for example Ethernet with Fast Ethernet, which are all types of networks that are similar or the same but in different network areas but have little meaning of brige. This device works in the data link layer of the OSI model or open systems interconnection.

However, this bridge can connect networks using different or different transmission modes.

And also this bridge is a tool that can learn the link address used by each device connected to it.

In addition, the bridge also manages the flow of frames based on the addresses used. But using a glimpse of the bridge you will try to get to know the meaning of the bridge and its function.

Bridge function

The bridge function is a tool that connects two different computer networks. With a bridge, users on both networks can communicate with each other and exchange data. In addition to these basic functions, the bridge also has several other functions, including:

Connecting 2 separate LAN networks

The function of this bridge is to connect 2 remote LAN networks. For example, there are companies that have branches that are very far apart. So this bridge can be used to connect two branch and central networks which is a cost-effective option.

Makes it Easy to Manage Your Own Network

Each branch in the company must have different servers and devices, so to be more efficient in managing the network, you have to use its own bridge to facilitate network management and maintenance.

Reduce Network Load

The function of this bridge is to share the load with other networks if there are users who access large data at the same time. If you only use one single network, the network performance will be disrupted and can meet the demands of each user. Therefore it would be nice to have several networks connected to one server via a bridge.

Various Bridges

There are two types of bridges that are most commonly used, including:

Source route Bridge

Source route bridge is a token ring network. This bridge contains frames with routing information that can assist in forwarding and decision making of frames across the network.

Translation Bridge

This bridge can convert networks with different types as well as linking two different networks. For example on ethernet network and token ring. The translation bridge can change the information and fields of a frame, which will be decoded by the received data.

Advantages of Bridges

The advantages of using a bridge are as follows:

  • Can move data through intermediate networks with different protocols.
  • Reduce the occurrence of collisions when sending packets in the network. Can allow connection on different network types.
  • Can increase network capacity and can reduce the risk of traffic congestion.

How Bridges Work

Sometimes there is a way of working a bridge that is often equated with a repeater. This bridge is more sophisticated than a repeater device in that the repeater only receives the signal coming from the source and forwards it regardless of what the data contains. Not with a bridge where this bridge will map each user or ethernet address that is in the computer network.

If the bridge has received a data packet, this bridge will find the destination and source of data that can be sent. If the purpose is not clear, the bridge will reject it. And vice versa, if the destination and source match the data packet that is forwarded to the destination address.

Hub Explanation

Hub is a network device whose job is to establish connections between several devices. And also this device serves as a link between different network segments.

Usually this hub device connects it with twisted pair cable media. The purpose of this hub device is to transfer data packets to every device that connects it.

However, this hub does not perform any filtering, which means that every data packet sent is only forwarded to all connected devices, even if it is not the device requesting the data.

And also this hub has the same data transfer speed to all existing and non-existent devices.

Hub Type

There are two types of hubs, namely active hubs and passive hubs, as follows:

  • Passive hub is a hub that provides a channel for the transmission of electrical signals.
  • An active hub is apart from providing a channel for the electrical signal, it also regenerates the signal before passing it on to other devices that are connected but do not process the data at all.

Hub Function

The function of the hub is to connect various devices so that they can exchange information. That way computers connected to this hub will be able to share data with each other.

This hub can be used on a small network system and is not too complicated. In general, the hub itself has 3 types, namely passive hub, active hub, and intelligent hub.

The difference between Bridges and Hubs

The differences between bridges and hubs include:

  • Hubs can only be used as connectors and connection providers between various nodes. Instead this bridge can serve the purpose of filtering and forwarding data on the network.
  • For this type of hub is divided into passive and active. While the bridge has 3 types namely transparent route, translation and source.
  • This data filtering can be done on the bridge while it is not done on the hub.
    Data filtering is performed on the bridge while it is not implemented on the hub.
  • Hubs enable multiple ports on a bridge enabling a single port that is incoming and visible for specific data.

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