Bus network

A bus network is an architecture network where the connection of the customers is ensured by a divided cable.

The bus networks make it possible to connect multiple customers simply, but poses problems when two customers want to transmit data to the same moment to the same bus. The systems which use a bus topology, normally have a manager of collision which manages the access to the bus.

Advantages and disadvantages of the bus networks

Advantages

Easy to implement and to extend
Utilisable for temporary networks (easy installation)
low Presents one of the costs of setting in network

Disadvantages

Difficult to manage
Length of the cable and many stations limited
a cut cable can stop the network
the costs of maintenance can be important long-term
the performances are degraded with the addition of station
Faible data security forwarding on the network (all the stations connected to the bus can read all the data transmitted to the bus)
a virus on the network can affect all the stations (but not more than with a topology out of star or ring)
It is extremely vulnerable since if one of connections is defective, the whole of the network in is affected.
It is necessary to use a stopper for the ends of the bus. (the loop must be closed)

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