Difference Between Hub Switch Bridge And Router Pdf

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In an Ethernet network, there are some networking devices that play their roles at various levels such as hubs, switches and routers.

The reason for the confusion is understandable. Besides looking similar, all three devices pass along data traffic through connectors called ports.

The Differences between Hubs, Switches, and Routers

A most common question asked by interviewer in a interview of desktop support, IT support, System admin and Network admin is difference between Hub and Bridge, Difference between Switch and router and vice versa. Hub — A hub works is to connect our network devices such as computer, printer etc. When Hub receives data from one system it broadcast to every connected port except the one from which receiving data. Hub has many demerit- It uses more bandwidth of the network due to unnecessary network broadcast. Due to this data collision may occur which may corrupt your data or may need to send again. January 13,

The key difference between hubs, switches and bridges is that hubs operate at Layer 1 of the OSI model, while bridges and switches work with MAC addresses at Layer 2. Hubs broadcast incoming traffic on all ports, whereas bridges and switches only route traffic towards their addressed destinations. Hubs provide a dedicated physical connection for every device, which helps reduce the possibility that a failure of one computer will cause all computers to lose connectivity. However, because a hub is still a shared bandwidth device, connectivity is limited to half-duplex. Collisions remain an issue as well, so hubs do not help improve the performance of the network. Hubs are essentially multiport repeaters. They ignore the content of an Ethernet frame and simply resend every frame they receive out of every interface on the hub.

What's the Difference? Hub vs Switch vs Router

The crucial difference between the hub and bridge is that the hub works on the physical layer , but the bridge operates on the data link layer of the OSI model. Both hub and bridge serve the different purpose. A hub transmits the data to each device connected to it, it broadcasts the data. On the other hand, a bridge is more intelligent which checks and filter data before forwarding it, this mechanism significantly reduce the network traffic and improve security. Basis for comparison Hub Bridge Basics Used to connect a number of devices. Facilitates in the segmentation of the larger network.

A network is formed when two or more devices connect to share data or resources. A large network may need to be subdivided for efficient frame delivery or the traffic management. Bridges or switches are used to connect these subdivided segments of networks. In a long way, the terms bridge and switch are use interchangeably. Bridge and switch both provide the same functionality but the switch does it with greater efficiency.

Tutorial of Differences between Hub, Bridge, Switch and Router

A Hub is the simplest of these devices. In general, a hub is the central part of a wheel where the spokes come together. This leads to inefficiencies and wastage. As a network product, a hub may include a group of modem cards for dial-in users, a gateway card for connections to a local area network for example, an Ethernet or a token ring , and a connection to a line. Hubs are used on small networks where data transmission is not very high.

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5.6 Bridges and Switches

What’s the Difference Between Hubs, Switches & Bridges?

Institutions — including, companies, universities and high schools — typically consist of many departments, with each department having and managing its own Ethernet LAN. Naturally, an institution will want its departments to interconnect their departmental LAN segments. In this section, we consider a number of different approaches in which LANs can be connected together. We'll cover three approaches, hubs, bridges, and switches in the following subsections. All three of these approaches are in widespread use today.

Repeater — A repeater operates at the physical layer. Its job is to regenerate the signal over the same network before the signal becomes too weak or corrupted so as to extend the length to which the signal can be transmitted over the same network. An important point to be noted about repeaters is that they do not amplify the signal.

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How to connect one router to another to expand the network? 14, Aug 20 · Difference between Thread Context Switch and Process Context.


 Сэр, как вы знаете, всякий, кто хочет проникнуть в банк данных извне, должен пройти несколько уровней защиты. Фонтейн кивнул. Иерархия допуска в банк данных была тщательно регламентирована; лица с допуском могли войти через Интернет. В зависимости от уровня допуска они попадали в те отсеки банка данных, которые соответствовали сфере их деятельности.

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2 Response
  1. Eavturtayre1964

    The key difference between hubs, switches and bridges is that hubs operate at Layer 1 of the OSI model, while bridges and switches work with MAC addresses at Layer 2. Hubs broadcast incoming traffic on all ports, whereas bridges and switches only route traffic towards their addressed destinations.

  2. Taiel A.

    Switch – A switch is a multi-port bridge with a buffer and a design that can a hub and a switch apparently look similar, they have significant differences.

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