Routers

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Network routers are essential devices in computer networking that serve as the central point of between different . They operate at the Network Layer (Layer 3) of the TCP/IP networking model and are responsible for routing data packets between networks based on the source and destination of the packet, enabling data to travel between devices on different subnets or even across the . Home network routers are usually combined devices that also include a and a .



Routers are responsible for forwarding data packets between networks. When a router receives a packet, it examines the destination and makes routing decisions to determine the most efficient path for the packet to reach its destination. Routing is the core function of a router. Routers use routing tables and to determine the best path for data packets to travel. They maintain these routing tables, which contain information about and associated next-hop routers or interfaces.



A routing table contains information about network and is used to determine the best path for forwarding data packets from the to the destination within a network. When a router receives a data packet from a connected device, it examines the packet's destination IP . The router looks up the destination IP address in its routing table. If a matching route is found in the routing table, the router determines the next hop or to which the data packet should be sent, as well as the outgoing network interface.

Keywords

wireless access point | firewall | networks | communication | gateway | routes | ip address | network destinations | ip address | address | source | internet | algorithms |