What is Network Topology? Different Types of Network Topologies by Anshul 2023

What is Network Topology? Different Types of Network Topologies by Anshul 2023

What is Network Topology?

Network topology refers to the logical arrangement or layout of a network and describes how the various nodes (sender/receiver) are connected and communicate with each other. Network topology is the arrangement by which computer systems or network devices are connected to each other. Topology can define both the physical and logical aspects of a network. Both the logical and physical topologies can be same or different in the same network.

Different Types of Network Topologies

There are many types of topology. For example, the physical topology includes the following:

• Bus topology
• Ring topology
• Star system
• Mesh topology
• Tree topology
• Hybrid topology

Bus network:  In bus network topology, each node is connected in series with a single cable. This arrangement is mainly found in cable broadband distribution networks today.

Star Network: In a star network topology, a central device connects to all other nodes through a central hub. Switched local area networks based on Ethernet switches and most wired home and office networks have a physical star topology.

Ring Network: In ring network topology, nodes are connected in a closed-loop configuration. Some rings only pass data in one direction, while others are capable of transmission in both directions. These bidirectional ring networks are more flexible than bus networks because traffic can go in either direction and reach a single node. Metro networks based on synchronous optical network technology are the primary example of ring networks.

Mesh network: Mesh network topology connects nodes with connections so that multiple paths are available between at least some points in the network. A network is considered to be fully meshed if all nodes are directly connected to all other nodes and partially meshed if only some nodes have multiple connections with others. Adding multiple paths increases flexibility but also increases cost. However, dedicated links require more space.

Tree network: Tree network topology has a root node, and all other nodes are connected in a hierarchy. The topology itself is connected in a star configuration. Many large Ethernet switch networks, including data center networks, are configured as a tree.

Hybrid network: Hybrid network topology is a combination of two or more topologies. Hybrid topologies typically provide exceptional flexibility, as they can accommodate multiple setups. For example, different departments of the same organization may opt for personalized network topologies that are more adaptable to their network needs.