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The Enhanced Interior Gateway Routing Protocol (OSPF) is based on the Open Shortest Path First (OSPF) protocol (EIGRP) Routing Information Protocol for Intermediate Systems to Intermediate Systems (IS-IS) (RIP)

  • Discover routing information from nearby routers.
  • Local routing information is broadcast to neighbouring routers.
  • Determine the optimum route for each network subnet.
  • Provide a virtual map of the network's pathways.

Input ports, output ports, a switching fabric, and a routing processor are the four components of a generic router. An input port is the point of entrance for incoming packets and the point of attachment for a physical link. Line cards, which commonly accommodate 4, 8, or 16 ports, are used to create ports.

Explanation: Routers are devices that connect various networks, select the optimum path for sending packets, and forward packets based on their destination IP address.

It's critical to the Internet's operation, but we often overlook it until something goes wrong. Routing governs how information-carrying packets (data transferred over a network or networks) such as email messages, website data, and voice-over-IP (VoIP) calls flow from one location on the Internet to another.

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