A router is a networking device that forwards data packets between computer networks. Routers perform the traffic directing functions on the networks. A router is connected to two or more data lines from different IP networks. When a data packet comes in on one of the lines, the router reads the network address information in the packet header to determine the ultimate destination. Then, using information in its routing table or routing policy, it directs the packet to the next network on its journey.
Symbol of Router:
Router Physical Interface:
Ethernet Gigabit/Fast: Router Ethernet interfaces uses to making a physical connection to your router. After you establish the connection, you can proceed with the basic configuration of Ethernet, Fast Ethernet, or Gigabit Ethernet connections.
BRI(Basic Rate Interface) Interface: Basic Rate Interface or Basic Rate Access is an Integrated Services Digital Network configuration intended primarily for use in subscriber lines such as, an ISDN BRI connection can use the existing telephone infrastructure at a business.
Serial Interface: Serial interfaces are used by ISP to provide WAN connections as a frame relay, T1, T3, etc. The port used is V.35 or RS232. Ethernet interfaces are used in LAN and WAN connections (RJ45).
Console Interface: The console is a physical port on the device that allows access to the CLI. We typically use this the first time we configure the device.
Auxiliary Interface: Auxiliary Port (AUX Port) allows a direct, non-network connection to the router, from a remote location. The Auxiliary Port (AUX Port) uses a connector type to which modems can plug into, which allows an administrator from a remote location to access the router like a console port.
Boot Process of Router:
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