RING TOPOLOGY

Also known as a ring network, the ring topology is a type of computer network configuration where each network computer and device are connected to each other forming a large circle (or similar shape). Each packet is sent around the ring until it reaches its final destination. Today, the ring topology is seldom used.


Because a ring topology provides only one pathway between any two nodes, ring networks may be disrupted by the failure of a single link. A node failure or cable break might isolate every node attached to the ring.

Advantages

• Very orderly network where every device has access to the token and the opportunity to transmit
• Performs better than a star topology under heavy network load
• Can create much larger network using Token Ring
• Does not require network server to manage the connectivity between the computers

Disadvantages

• One malfunctioning workstation  can create problems for the entire network
• Moves, adds and changes of devices can affect the network
• Network adapter cards is much more expensive than Ethernet cards and hubs
• Much slower than an Ethernet network under normal load

Cellular Topology

The cellular topology is applicable only in case of wireless media that does not require cable connection. In wireless media, each point transmits in a certain geographical area called a cell. Each cell represents a portion of the total network area. Devices that are in the cell communicate through a central hub. Hubs in different cells are interconnected. They route data across the network and provide a complete network infrastructure.