Designing an IP network requires a deep knowledge of both infrastructures, and theperformance of the devices that are used. At the same time how packets are handled bythe devices. In networking infrastructure where there are multiple branches with lots ofredistribution points, performance is very important thing that a network designershould consider. A company can have different brunches, where those brunches usedifferent routing protocols. Branches of the same company should communicate witheach other. The existence of multiple routing protocols in different branches willrequire redistributing those protocols so that, routes from one routing protocol can beadvertised in to another routing protocol.The main issues, which can affect the performance of a network, are the results ofimproper redistribution. These issues, which affect the network performance, areexcessive routing updates, suboptimal routing and routing loop, which can lead tonetwork downtime.This thesis discusses the issues of network performance. It explains how to overcomethese issues using different path control tools. The authors of this thesis decided topresent some of the network performance issues and also give a solution to the issuesdiscussed earlier.