A methodology to measure the resiliency of network infrastructure against DDoS and botnet attacks. Only through realistic attack simulation can organizations visualize their own weaknesses and vulnerabilities within the IT infrastructure. DDoS testing methodology creates a variety of attacks to help users find their network weaknesses before others do. Such attacks include the following: DDoS designed to consume all available bandwidth, all. available disk space or all available CPU cycles. to disrupt important information flow such as routing tables by injecting false routes, thus causing packets to be misrouted and obstruct communication between the end-point and the user.”]
Source: http://www.shoaibyousuf.com/2011/12/ddos-testing-methodology.html