INTERIOR GATEWAY ROUTING IGP Essay

IGP implementation is focused to be used in gateways that are connecting several networks. This report addresses cases of the networks that uses packet trace technology in transferring signals. This is where gateways act as packet switches, such that when a system connected to one network wants to send a packet to a system that is connected to different network then it has to address the packet to a gateway. However, in order to understand the best network routes among static, distance and link state that has to be used together with IGP at different levels, we need to understand first, what those routes are and compare and contrast them based on their abilities. Static routing can be defined as the routing that usually occurs as results of configuring routing entry manually.

The three types of the routers are considered based on various factors. The factors are used to determine whether to use static router protocol, distance vector router protocol or link state router. However, the choice of the router will depend on the interest of users or the system administrators. Mostly the choice of the routers used in network connection is done in line with their abilities against the five rules of networking; Scalability, Security, Redundancy, Manageability, Functionality (Cisco, 2010). Looking at each of them categorically, we notice that distance vector network does not have a complete illustration of the network topology contrary to static and link state routing protocols that have a complete illustration of the network topology. For each router configuration, it must consist of a static router network that is attached to the router itself.

Configuration for Router1: Hostname router1 ! Interface Ethernet 0 ip address 172. 0 ! Interface Ethernet 1 ip address 172. 0 ! ip route 172. 2 ip route 172. 1 ip route 172. 1 Comparing the three routers in terms of scalability. Static routing protocol lacks scalability which brings about the price of its simplicity but both distance and link state routers are scalable, even though distance routing vector is less scalable as compared to the link state routers. More so, static routing protocol by definition it is said to be static which implies that it cannot be able to use redundant network link in areas consisting of poor network. Looking at a situation where there is an additional interface to Router 3 and it is connected to 172. In this report, we have analysed how the three routing protocols that are commonly used in the networks today perform.

From the analysis and evaluation of the network topology implemented, we are able to understand that link state routing protocol is capable of performing better in a large and complicated network as compared to Static and distance vector routers. The report confirms that IGRP has the fastest convergence of the network as compared to other network topologies. In addition, both IGRP and OSPF utilizes bandwidth effectively. However, RIP routing information is sent fully using periodic update which causes the network to flood and waste bandwidth unnecessarily. 7 Reference Guide”. Retrieved on Feb 1st, 2010. Retrieved from:http://www. cisco. com/c/en/us/td/docs/net_mgmt/active_network_abstraction/37/reference/ guide/ANARefGuide37. Retrieved from: http://www. net130. com/tutorial/cisco-pdf/routingtcpipv1. pdf Cisco, “Differences between OSPF and EIGRP”, 2009.