Bus network

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This article is about a type of computer network. For networks of municipal bus routes, see Public transport bus service.
Topology of a bus network

A bus network is a network topology in which nodes are connected in a daisy chain by a linear sequence of buses.

How it works[edit]

The bus is the data link in a bus network. The bus can transmit data in either direction, and if any network segment is severed, all network transmission ceases.

A host on a bus network is called a station or workstation. In a bus network, every station receives all network traffic, and the traffic generated by each station has equal transmission priority.[1] Each network segment is, therefore, a collision domain. In order for nodes to transmit on the same cable simultaneously, they use a media access control technology such as carrier sense multiple access (CSMA) or a bus master.

Advantages and disadvantages[edit]


  • Easy to connect a computer or peripheral to a linear bus
  • Requires less cable length than a star topology
  • It works well for small networks.


  • Entire network shuts down if there is a break in the main cable
  • Terminators are required at both ends of the backbone cable
  • Difficult to identify the problem if the entire network shuts down
  • Not meant to be used as a stand-alone solution in a large building
  • It is slow when more devices are added into the network
  • If a main cable is damaged then network will fail or be split into two networks

it is difficult to detect trouble at an individual station


  1. ^ Knott, Geoffrey; Waites, Nick (2002). BTEC Nationals for IT Practitioners. Brancepeth Computer Publications. p. 395. ISBN 0-9538848-2-1. ...all stations have equal priority in using the network to transmit.