An simple comparison between Switches and Routers

An simple comparison between Switches and Routers

1. Layer of Operation:

Switch: Works at Layer 2 (Data Link Layer).

Router: Works at Layer 3 (Network Layer).

2. Functionality:

Switch: Connects multiple devices within a network and manages VLAN security.

Router: Directs data flow between networks and devices.

3. Data Transmission:

Switch: Uses Frames (L2) and Packets (L3); supports Half & Full Duplex.

Router: Uses Packets only; supports Full Duplex.

4. Usage:

Switch: Mainly used in LANs.

Router: Used in LANs, MANs, and WANs.

5. Addressing:

Switch: Stores and learns MAC addresses.

Router: Stores and manages IP addresses.

6. Connectivity:

Switch: Connects multiple PCs via Ethernet cables (Cat5e/6/6A) extra.

Router: Connects devices via Ethernet or Wi-Fi.

7. Broadcast Domain:

Switch: One broadcast domain (unless VLAN is used).

Router: Each port has its own broadcast domain.

8. Network Scope:

Switch: Limited to wired network connections.

Router: Supports both wired and wireless networks.

9. Routing Efficiency:

Switch: Takes more time for complex routing decisions.

Router: Makes routing decisions faster.

In short, switches are mainly for internal network communication within LANs, while routers connect different networks and manage internet access.

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Source: LinkedIn

Credits: Mr. Mohamed Wafaa