In this article I describe the term routing and routed protocol related to networking. Routing and Routed protocol belongs to IP router in routing. IP routing in router is a process of packet transfer between different networks via a router. When we access the internet or intranet the data packets transmitted and received by IP routing in router. Every interface of router has a different network.. Routers are also known as layer3 device. Various routing and routed protocol used for moving packets between different networks. Generally the IP routing in router is done by static routing and default routing .
Distance-Vector and Link-State protocols
Distance-Vector routing protocols select the
best path for data packets. Here distance is reference of hop in network.
Distance-Vector protocols calculate the distance between source and destination
on the basis of hop count. Suppose there
are two path available for data packet from source and destination. Distance-Vector
protocol select the path in which the number of hopes are less.
RIP and IGRP are example of Distance-Vector routing protocol.
Distance vector routing protocols manage the
selection of best path for data packets by routers. Routing table of all
routers update by sharing the information on the network. The destination
network path defines by hop count up to destination network. Distance vector
routing protocols generally known as DVRP. Distance vector routing protocols is
mostly used protocol in present scenario. DVRP sent the data packets over the
internet protocol
.
Open shortest path first
The OSPF stands for Open Shortest Path First. It is a widely used and supported routing protocol. It is an intradomain protocol, which means that it is used within an area or a network. It is an interior gateway protocol that has been designed within a single autonomous system. It is based on a link-state routing algorithm in which each router contains the information of every domain, and based on this information, it determines the shortest path. The goal of routing is to learn routes. The OSPF achieves by learning about every router and subnet within the entire network. Every router contains the same information about the network. The way the router learns this information by sending LSA (Link State Advertisements). These LSAs contain information about every router, subnet, and other networking information. Once the LSAs have been flooded, the OSPF stores the information in a link-state database known as LSDB. The main goal is to have the same information about every router in an LSDBs.
EIGRP
Enhanced Interior Gateway Routing Protocol is an advanced distance vector routing protocol based on the principles of Interior Gateway Routing Protocol (IGRP). It has a unique characteristic that improves operational ability and fast converging rate. It can determine the shortest path distance vector and works on the Interior Gateway Routing Protocol principle, a classless routing protocol. It calculates the shortest optimal network route using bandwidth, load, and delays metrics. It is a technologically more advanced distance vector-based routing protocol. To exchange INFORMATION . first and foremost, the routers need to become neighbors to EIGRP, then EIGRP uses the multicast address to share the information.
Enhanced Interior Gateway Routing Protocol’s underlying logic is based on the concept of an autonomous system. In a system where each router should become neighbors to EIGRP and each system tagged as neighbors under Enhanced Interior, Gateway Routing Protocol will have the same system number configured.
