In this article, you will be able to understand Network Topology and Types of Network Topology. I will explain different types of Physical Topologies used in Networking.
Network Topology is the arrangement of the various elements of a Computer Network. Essentially, it is the topological structure of a network and may be depicted physically or logically.
There are two types of Network Topology. One is called Physical Topology and another on is Logical Topology.
- Physical Topology
- Logical Topology
Physical Topology is the placement of the various components of a network, including device location and cable Installation.
Logical Topology illustrates how data flows within a network, regardless of its physical design.
Distances between nodes, physical interconnections, transmission rates, or signal types may be differ between two networks, yet there topologies may be identical.
Here is the some bullet points about Network Topology –
- The Network Topology impacts performance
- The Network Topology Impacts the cost of cabling the network.
- The Network Topology is a factor in determining the media types used to cable the network.
- Some access methods work only with specific topologies.
- Knowledge of TopologyN helps to optimize the network performance and troubleshoot network performance issues.
Types of Topology
There are the six different types of Physical Topologies with their Advantages or Disadvantages.
- Bus Topology
- Ring Topology
- Star Topology
- Mesh Topology
- Tree Topology
- Hybrid Topology
Bus Topology is a network where all the nodes are connected with each other with a single common cable.
When one node wants to access another node on the network then it puts a message addressed to that device on the Bus Network.
- Advantages of Bus Topology
- It is very easy to connect a node or peripheral in this network.
- This Network requires
lesscables length than any other topologies.
- Disadvantages of Bus Topology
- As the total network is depended on a single cable so if any problem occurs in the main cable, the entire network shutdown.
- At the start and the end point of the main cable terminators are required to build up the networks.
- This network can not be used as a stand-alone solution in a large building.
When each device is serially connected in a closed ring pattern with a single cable then the network system is called Ring Topology.
As a train crosses all the platforms to reach its destination, ring topology does the same to pass a message from one node to another node.
- Advantages of Ring Topology
- The network does not do anything without order. Its need to access the token & the opportunity to transmit.
- The performance does not get interrupted by any additional components.
- In this network each and every node has equal access to resource.
- Network server is not nedded to control the connection between nodes.
- Disadvantages of Ring Topology
- In this network if any nodes break down then the entire network system stop working.
- The speed of transferring data is slower than any other topologies just because a packet of data passes through all the nodes between sender and receiver devices.
- The entire network could be effected by moving, adding and changing of devices.
In this network, all nodes are connected to a central hub with separated cables. Here the central node or hub acts like the main server and the other nodes which are connected to the central node, act as client devices.
- Advantages of Star Topology
- In this type of network it is very easy to add or remove a node to the network system
- Here if any fault occours it is very to find out and you can easily fix it.
- If anyone nod faces problem, the rest nodes performssmoothly without effecting the network.
- Disadvantages of Star Topology
- It is more expensive than any other t
opologiesto build up the network because it requires excessive length of cable.
- The entire network goes down if the central node does not work properly and also if the other important nodes are disconnected from the network, example file server node stops working.
- The central hub is expensive which makes the network more expensive.
In the Mesh Topology each and every network is interconnected with each other. It works independently.
- Advantages of Mesh Topology
- In this network adding or removing could be done easily without interrupting the other nodes and the network.
- Here the transmission of data is very easy because it transfers data from different nodes simultaneously.
- In this configuration trannsfer of data does not get affected by any peripherals because if one node fails there is always an alternative one.
- Disadvantages of Mesh Topology
- It is very hard to configure the network and also very difficult to maintain.
- Mesh Topology is comparatively expensive when compared with other typologies like ring or star topology.
A tree topology looks like the branches of the tree where each and every nodes are connected with its parents node. It is also called by the name star+bus topology.
- Advantages of Tree Topology
- In this topology finding out any fault is very easy and not too hard to maintain.
- If one of any nodes get damaged the other hierarchical nodes are not affected.
- It is very easy to extend the network as much as administrators want.
- Disadvantages of Tree Topology
- The network requires high maintenance.
- A lot of cable is required to establish the network system.
- Troubleshooting of problems is highly difficult.
Hybrid topology is the combination of the two or more different network topologies. This network is a mixture of both peer-to-peer and client-server network.
It can be either wired or wireless network.
- Advantages of Hybrid Topology
- In this network the troubleshooting is far better than any other topologies.
- This type of network is very easy to expand
- Disadvantages of Hybrid Topology
- The structure of the network is hard to understand.
- It is very expansive to build up the entire
I hope now you can easily understand about Network Topology. It is the very important for the network.