| Circuit Switching | Packet Switching |
|---|---|
| Dedicated path is created between two points. | Virtual path is created between two points. |
| Bandwidth is fixed. | Bandwidth is dynamic. |
| The links that make a path are dedicated and cannot be used by other connections. | The links that make a route can be shared by other connections. |
| Congestion can occur at setup time. | Congestion can occur on every packet. |
| Path followed by packets is always same. | Path followed by packets is may or may not be same. |
| It is highly reliable. | It is less reliable. |
| It is implemented at Physical layer. | Datagram Switching is implemented at Network layer and Virtual Circuit Packet Switching is implemented at Data Link layer. |
| It requires call setup. | It does not require call setup. |
| Store and forward transmission is not used in Circuit Switching. | Each node may store incoming packets temporarily and forward them later. |
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