Dwg: Article written and Venn diagram created.

2026-01-06T22:48:18Z

Article written and Venn diagram created.

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== Router vs. Switch ==
A router is a networking device that forwards data packets between computer networks, while a network switch connects devices within a single local area network (LAN).<ref name="ref1" /><ref name="ref2" /> Both are fundamental components of computer networking, but they serve different purposes and operate at different layers of the Open Systems Interconnection (OSI) model.<ref name="ref3" /> Routers are used to connect two or more different networks, such as connecting a home network to the Internet.<ref name="ref4" /><ref name="ref5" /> Switches are used to create a network by connecting multiple devices, like computers, printers, and servers, allowing them to communicate with each other within the same network.

=== Comparison Table ===
{| class="wikitable"
|-
! Category !! Router !! Switch
|-
| '''Primary Function''' || Connects multiple networks together (e.g., a LAN to the Internet). || Connects multiple devices within a single network (LAN).<ref name="ref3" />
|-
| '''OSI Model Layer''' || Layer 3 (Network Layer).<ref name="ref4" /> || Primarily Layer 2 (Data Link Layer).<ref name="ref3" />
|-
| '''Addressing Used''' || Uses IP addresses to direct packets to destination networks.<ref name="ref4" /> || Uses MAC addresses to forward frames to specific devices on the same network.
|-
| '''Decision Making''' || Uses a routing table to determine the best path to forward packets between networks. || Uses a MAC address table (or CAM table) to map which devices are connected to which physical ports.
|-
| '''Data Unit''' || Packet. || Frame.
|-
| '''Use Case''' || Enables internet access for multiple devices; connects distinct networks. || Facilitates communication between devices on a local network (e.g., in a home or office).
|-
| '''Scope''' || Operates between different networks (WAN, LAN).<ref name="ref2" /> || Operates within a single network (LAN).<ref name="ref2" />
|}

[[File:Venn_diagram_Differences_between_Router_versus_Switch_comparison.png|thumb|center|800px|alt=Venn diagram for Differences between Router and Switch|Venn diagram comparing Differences between Router and Switch]]

=== Functionality ===
A primary role of a router is to direct traffic between different networks.<ref name="ref4" /> It reads the destination IP address of an incoming data packet and uses its routing table to determine the most efficient path for that packet to reach its destination network. Routers are necessary for data to travel across the internet.<ref name="ref4" /> Many modern routers also perform Network Address Translation (NAT), which allows multiple devices on a private network to share a single public IP address.<ref name="ref1" /> Additionally, routers often include security features such as built-in firewalls.

A network switch operates within the boundaries of a single local network.<ref name="ref3" /> Its main purpose is to receive incoming data, called a frame, and forward it only to the port connected to the intended destination device. It does this by reading the destination MAC (Media Access Control) address contained in the frame's header and looking up the corresponding port in its MAC address table. This process minimizes unnecessary network traffic, as data is sent directly to the recipient device rather than being broadcast to all devices on the network.<ref name="ref3" /> Some more advanced switches, known as Layer 3 switches, can perform some routing functions, but the primary distinction between the two devices remains their core purpose.

== References ==
<references>
<ref name="ref1">[https://lktech.tech/router-vs-switch-whats-the-difference/ "lktech.tech"]. Retrieved January 06, 2026.</ref>
<ref name="ref2">[https://www.uninets.com/blog/difference-between-router-switch "uninets.com"]. Retrieved January 06, 2026.</ref>
<ref name="ref3">[https://servodynamics.com.vn/what-is-a-network-switch/ "servodynamics.com.vn"]. Retrieved January 06, 2026.</ref>
<ref name="ref4">[https://en.wikipedia.org/wiki/Router_(computing) "wikipedia.org"]. Retrieved January 06, 2026.</ref>
<ref name="ref5">[https://olin.es/en/blog/what-is-a-network-switch/ "olin.es"]. Retrieved January 06, 2026.</ref>
</references>

[[Category:Comparisons]]

Differences between Router and Switch - Revision history

Dwg: Article written and Venn diagram created.