Network management systems are a necessary part of every production network. Nowadays management is always scrutinizes every dollar spent on hardware and software. The costs of these systems need be justified in the same manner that infrastructure and data center upgrades need to be justified. Network management systems not only are cost affective but also benefits the network management team in giving them the ability to look into their network to see what is going on. Without NMS you cannot answer questions such as why did the network go down or why is the network slow?