A router is an Internet device that operates at the network layer. A router receives data packets and transmits them between various computer networks. In order to verify the destination IP address and send the packet appropriately, the router looks at the header element of the received packet. If you want to know What is a Router in CCNA? You can join the CCNA Course in Chennai at FITA Academy.
There are numerous ways to connect a router, including serial, Ethernet, Fast Ethernet, and fibre optic ports. The router operates using its iOS operating system. The Internetwork Operating System is referred to as IOS. Network topology, routing, and routed protocol databases are all available in IOS.
The router is always positioned at the network’s edge. A router serves as the network’s central gateway for all data packets. The Internet server and our PC may communicate with each other across hundreds of routers while we utilize it.
You can connect using wired or wireless methods to a router. Both carry out the same task of forwarding data packets. A WiFi hotspot connecting several home devices to the Internet is a typical example of a router.
Types of router
The definition of router kinds is based on the function of the router. A big network router may perform the functions of a backbone router, internal router, edge router, or core router. Depending on the routers’ function, the configuration is altered. ISPs, for instance, employ core routers.
Since a core router links numerous users, more configuration is needed. Core routers are incredibly quick and strong routers. Large business networks are connected to core routers via enterprise routers.
Edge routers are modestly sized routers that are often installed at a LAN’s entrance. Consider WiFi routers that are utilized in homes or small offices. The local network is connected to the Internet through edge routers.
Branch routers act as an intranet to connect two different WANs. Let’s assume that branch routers connect to a company’s remote location. Expand your skills by joining FITA Academy for CCNA Course by IT experts. It also offers 100% Placement Assistance with the CCNA Course Online.
Access, core and distribution
The routers that the end user can connect are called access routers. A nice illustration of a home office access router is SOHO Small Office. Routers used for internet connectivity at home or work are referred to as SOHO. Distribution routers follow access routers in the router structure.
It is possible to describe distribution routers as numerous access routers’ gateways. One way to think of a core router is as a gateway to distributed routers.
Protocols used by router
IP routing uses routing and routed protocols to move data packets from one network to another. We must understand IP routing in a router before moving on to routing and routed protocols.
In a router, packets are transferred between various networks during IP routing. IP routing is used to determine the data packet’s exit interface and path. Different routing and routed protocols are used for IP routing.
Routing protocols of router
A router uses routing protocols to create and keep up a routing table of routers. Routers receive network information from routing protocols. Data packets are not in any manner carried or pushed by routing methods.
All routers’ routing tables need to be changed whenever there is a network change. This is done using routing protocols. Routing protocols assist routers in determining the most efficient route for data packets. The routing protocols RIP, RIPv2, EIGRP, and OSPF are a few examples. Well-experienced trainers provide CCNA Course In Bangalore with 100% placement assistance.
Read more: Dynamic Routing Protocols in CCNA