Two of the most common logical topologies are:

A logical network diagram describes the way information flows through a network. Therefore, logical network diagrams typically show subnets (including VLAN IDs, masks, and addresses), network devices like routers and firewalls, and routing protocols.

Logical Topologies. The two logical topologies are broadcast (also known as bus) and sequential (also known as ring). In a broadcast topology, all devices on the network receive every message transmitted.

• Bus topology: Ethernet uses the logical bus topology to transfer data. Under a bus topology a node broadcasts the data to the entire network.
• Ring topology: In this topology, only one node can be allowed to transfer the data in a network at a given time.

The logical topology defines how nodes in a network communicate across its physical topology. The logical topology can be considered isomorphic to the physical topology, as vice versa. A twisted pair Ethernet network with a single hub is a logical bus topology in a physical star topology layout.

Logical topology: Different types of Physical Topologies are: P2P Topology. Bus Topology. Ring Topology.

There are two types of the Ring Topology based on the data flow:

• Unidirectional and,
• Bidirectional.

There are five types of topology in computer networks:

• Mesh Topology.
• Star Topology.
• Bus Topology.
• Ring Topology.
• Hybrid Topology.

Updated: by Computer Hope. A hybrid topology is a type of network topology that uses two or more differing network topologies. These topologies can include a mix of bus topology, mesh topology, ring topology, star topology, and tree topology.

Network topology refers to the manner in which the links and nodes of a network are arranged to relate to each other. A network topology diagram helps visualize the communicating devices, which are modeled as nodes, and the connections between the devices, which are modeled as links between the nodes.

Line configurations (or types of connections) are point-to-point and multipoint.

A ring network is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node – a ring. Data travels from node to node, with each node along the way handling every packet.

Ring network topologies are used when a simple network is needed. They are suitable for locations that do not rely on very high data-transfer speeds, and where the network is unlikely to alter in size or structure. For example, a small office with only a few nodes may use a ring network topology.

Due to the Uni-directional Ring, a data packet (token) must have to pass through all the nodes. If one workstation shuts down, it affects whole network or if a node goes down entire network goes down. It is slower in performance as compared to the bus topology. It is Expensive.

In wide area networks (WAN) and meteropolitan area networks (MAN), a ring topology is used to as the topology for the backbone (sometimes called a city ring) to connect the customers. In that case the ring is used in both directions to have two distinctive paths to the public switch.

Disadvantages of a ring topology

• All data being transferred over the network must pass through each workstation on the network, which can make it slower than a star topology.
• The entire network will be impacted if one workstation shuts down.

A ring network is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node – a ring. Data travels from node to node, with each node along the way handling every packet. Data is quickly transferred without a “bottle neck”.

Once the center of a great technical debate in the 80’s and 90’s, the Token Ring vs. Ethernet wars are long settled. But it’s kind of surprising that Token Ring is still taught. The text for the class calls Token Ring the “second most popular technology” for connecting local area networks.

It is called ring topology because it forms a ring as each computer is connected to another computer, with the last one connected to the first. Exactly two neighbours for each device.

Local area network

In general, there are two types of LANs: client/server LANs and peer-to-peer LANs. A client/server LAN consists of several devices (the clients) connected to a central server. The server manages file storage, application access, device access, and network traffic.

What are the hardware components of a LAN?

• PCs/workstations and servers.
• Network Interface Card (NIC)
• Cabling and connectors, for example, coaxial cable and BNC connector, Unshielded Twisted Pair (UTP) and RJ-45 connector.
• Hub, concentrator, and more complicated network devices such as Bridge, LAN Switch and Router.

The LAN devices used in most homes and small offices are laptops, tablets, and smartphones connected to a network. Smart devices may, if linked to the network, also be LAN devices. They include all sorts of game consoles, smart TVs and Blu-ray players as well as network printers and IP webcams.