Networks will always experience problems. One of your goals is to make sure that you maximize your performance while minimizing your problems. You have to deal with three main issues while balancing networking performance and problems: application performance, capacity planning, and fault management.
The first thing you'll want to do is to develop a baseline of the performance of your existing network. You need to document your existing network, including the layout of your devices and their current operation, CPU and buffer utilization, memory usage, and throughput. You also need to determine adequate response times for your users and their applications.
After building a baseline, you need to take the growth in your network into ...