| Device | Hub | Switch |
| Layer | Layer 1 device; Physical Layer | Layer 2 device; Data link Layer |
| Device type | Multiport repeater.
Pass all information received to all connected devices. It creates unnecessary traffic. |
Network device.
Pass information only those devices need it. It avoids unnecessary traffic. |
| Network | Use for smaller network | Use for larger network |
| Function | Connect a network, computers join in central hub | Join multiple computers together within one local area network (LAN). |
| VLAN | There is no VLAN function. | VLAN can be created and security can be applied. |
| Broadcast | One. | One broadcast domain.
By default, do not breakup broadcast domain. |
| Forwarding | Broadcast all connected devices. | By default, do not forward packets to other networks like routers. |
| Bandwidth | Provides less bandwidth. | Provides more bandwidth. |
| Collision domain | One.
Collision occurs commonly.
|
Many.
No collision occurs in full duplex switch. |
| Spanning Tree | No | Many |
| Duplex | Half duplex | Half / Full duplex |
| Ports | Up to 12 ports | Up to 48 ports |
| Speed | Up to 10 Mbps | Up to 10 Gbps |
Switch
- Layer 2 device; Data link Layer
- Allow to connect multiple devices and port can be manged. Vlan can create & security can be apply.
- Do not breakup broadcast domain by default
- Do not forward packets to other networks like routers
- Providing more bandwidth for LAN users
- Only ‘Switch’ frames from one port to another within the switched network
- Use hardware address to filter a network
- Many collision domain
- One broadcast domain
Hub
- Layer 1 device; Physical Layer
- To connect network, join through central hub
- 1 Collision domain
- 1 broadcast domain
- Never full duplex
- Multi-port repeater
attocloud 