Bus Topology Definition With Advantages And Disadvantages

Bus topology is a kind of network where all devices are connected to a common network. This common network is known as backbone of the network. As all devices are connected to a common network so this network is known as bus network topology. Only a single cable is used to connect all devices and this single cable function as a shared communication medium. A device which wants to connect to this network needs an interface connector to do so.

When a device that wants to communicate to particular devices within the network sends a broadcast message, other devices can see the message but only that particular devices can except the message and can execute the message.

In bus network topology Ethernet cabling is used as a popular method. Ethernet bus topology is relatively easy to install and require a less amount of cabling if we compare to other option as alternative.in Ethernet bus topology 10 base-5(Thick Net) and 10 base-2(Thin Net) are the most popular cabling option.

What is Bus Topology?


It’s a kind of network topology where every devices or nods connected to a single cable. And this cable is known as a main cable. It’s also called as the backbone of the network.

For a limited number of computer bus topology gives the best performances. When computers in bus topology exceeds more than a few dozen it decrease the performance level. Moreover all the computers of the topology become unusable when the backbone cable goes offline.

Tree Topology 

Bus Topology

Bus Network Topology advantages and disadvantages

Like other network topology bus topology has its own pros and cons. some of the bus topology pros and cons are discussed in below.

advantages and disadvantages of Bus topology
advantages and disadvantages of Bus topology

Star Network Topology

Ring Network Topology

Advantages of Bus Network Topology

Advantages are following:

Pros of bus topology

There are some pros of bus topology. Some of them are discussed in below.

Cost effective in cabling

Bus topology allows nodes to connect to the network directly without passing through any hub.as a result installation cost is less in initial level.

Data direction

In bus topology it transmits data only to a single direction.

Standard data speed

Bus topology based network use twisted or coaxial cables. This types of cable support to transfer the data at a speed of 10 Mbps max.

Controlled failure

If a node of this network fail to perform than its have no effect on other nodes on this network. For this reason the failure of this network are controlled.

Known technology

In bus topology technology of installation and troubleshooting are widely known and every hardware components are easily accessible.

Easily expandable

If the bus topology needs to expand then it’s very easy to do so. Just joining the two cable allows to expand the network of bus topology.

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Disadvantages of Bus Network Topology

Like the other network topology bus topology also has its demerits. Some of them are discussed in below.

Wide range of cabling

Though bus topology is a simpler topology, but it requires a large amount of cabling.as a result it causes more spends in cabling.

Troubleshooting difficulties

To identify the exact fault in the main cable, it requires a specialized test equipment. More over when any fault occurred in a main cable then every nodes or devices will face disruption in communication.

Interference in signal processing

If the two nodes send the messages simultaneously, then it causes interference in signal processing as the signals of the two nodes collides with each other.

Difficulties in reconfiguration

Speed will slow down if any new devices added to the network. Because when any devices connected to this network then it create more load on the main cable. More load on the main cable slows down the speed of data processing.

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Signal Interruption

When the signal loss happened then attenuation occurred in network. To regain the strength of network repeaters needs to generate the signal.

Uses of bus topology

Selection of the network topology to use as a main network topology depends on some factors. Which determines what type of network topology should be used. Same goes for the topology. There are some factors which determines the uses of bus topology as a main network topology. Some of them are

Availability of hubs and switch

When there is no hubs or switches are available then bus topology is used to make a network topology.

Number of devices

When the number of devices or computers in a network are not fixed then bus topology is used.

Network interruption

The failure of one nodes does not affect the network then bus topology is a perfect option.

Power supply

External power supply is not needed for this type of network topology. As a result when there is no external power source for any network then bus network topology is the best option to use.

In conclusion

There are many types of network topology available for use. Based on the criteria and situation different types of network topology are used. If anyone wants to make a simple network topology then the bus network topology is the best option for you. Comments bellow if you have any query.

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