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Routing - how it works

If you're super interested in trying things out for yourself, you may want to check out this link which will get you started with some cool cmd commands! 

Routing is the process of selecting a path for traffic in a network or between or across multiple networks. Broadly, routing is performed in many types of networks, including circuit-switched networks, such as the public switched telephone network (PSTN), and computer networks, such as the Internet.

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A brief summary of routing

  • Routers have interfaces which connect with other network devices
  • When a packet comes at an interface, router needs to find the right interface to send out the packet
  • The destination IP field of packet is checked against information stored in the router
  • If there is a match, the packet is sent out via the proper interface
  • this process is repeated along the way on each router

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