Star Topology
Description
All devices connect to a central device (switch or hub). Most common topology in modern LANs.
Advantages
- Easy to install and manage
- Fault isolation - one failure doesn't affect others
- Easy to add new devices
Disadvantages
- Central device is single point of failure
- Requires more cabling than bus
Statistics
Compare Network Topologies
Click on topologies to highlight them in the comparison table below.
Star
Central device connects all nodes
Bus
Single backbone cable
Ring
Circular data path
Full Mesh
Every device connected
Partial Mesh
Strategic redundancy
Hybrid
Combined topologies
| Characteristic | Star | Bus | Ring | Full Mesh | Partial Mesh | Hybrid |
|---|---|---|---|---|---|---|
| Cost | Medium | Low | Medium | Very High | High | Varies |
| Scalability |  |
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| Ease of Management | |
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| Single Point of Failure | Central device | Backbone cable | Any link/node | None | Depends | Varies |
| Best Use Case | LAN, Office | Legacy only | FDDI, SONET | WAN Core | Distribution | Enterprise |
| Cable Requirements | n cables | 1 backbone | n cables | n(n-1)/2 | Variable | Variable |
Full Mesh Connection Calculator
Calculate how many connections are needed for a full mesh network.
The Formula
Where n = number of devices in the network
Calculate
Connections Required for Full Mesh:
5 devices, each connected to 4 others = 20 links, but since each link is shared by 2 devices, we divide by 2.
Quick Reference
Why Full Mesh Doesn't Scale
Notice how connections grow exponentially! Going from 10 to 20 devices doesn't double the connections - it increases them from 45 to 190 (4x more!).
This is why full mesh is only used for small, critical networks (like connecting 2-4 data centers), while partial mesh is used for larger deployments.
Traffic Flow Animation
Watch how data travels through different topologies.