outers capture the data that return through broadband affiliation via a electronic equipment and deliver it to your pc. The router opt for route for the packet so you receive the data first off. Routers area unit multiport devices and a lot of refined as compared to repeaters and bridges. Routers conjointly support filtering and encapsulation like bridges. They operate at physical, electrical circuit and network layer of OSI model.
Like bridges, they're self learning, as they will communicate their existence to alternative devices and may learn of the existence of recent routers, nodes and computer network segments.A router has access to the network layer address or logical address (IP address). It contains a routing table that permits it to create choices concerning the route i.e. to work out that of many doable methods between the supply and destination is that the best for a selected transmission. These routing tables area unit dynamic and area unit updated victimization routing protocols.
The routers receive the packets from one connected network and pass them to a second connected network. However, if a received packet contains the address of a node that's on another network (of that the router isn't a member), the router determines that of its connected networks is that the best next relay purpose for that packet. Once the router has known the most effective route for a packet to travel, it passes the packet on the suitable network to a different router. That router checks the destination address, notice what it considers the most effective route for the packet and passes it to the destination network.