LoadRunner 培训教程12ipspoof.pptVIP

Objectives In this lesson, you will learn: The Routing of Web Client Requests is IP-related How Are IP Addresses Used by Routing Tables and Load Balancing Systems? Routing Tables Use Destination Address to Find a Packets Next Step Web Servers Use the ClientsIP Address to Return Results How Are IP Addresses Used by Routing Tables and Load Balancing Systems? Load Balancing Systems Rely on the IP Address of the Client Virtual Users Generally Reside at a Single IP Address Unbalanced Load Modeling Causes Uncertain Test Results IP Spoofing Issues IP Spoofing Issues Implementing the IP Spoofer Implementing the IP Spoofer Implementing the IP Spoofer:Add Intranet/LAN Addresses Implementing the IP Spoofer:Add Internet Addresses Implementing the IP Spoofer Implementing the IP Spoofer IP Spoofing Results in Well-Distributed Load Modeling Summary Emulates real-world network traffic Associates each Vuser with a different IP address Is configured by running the IP Wizard Must be configured separately on every Vuser host machine After the web server has been rebooted, open the Controller and enable the IP Spoofer from the Scenario menu. During load testing with the IP Spoofer enabled, requests seem to originate from a spectrum of client addresses. Consequently, the entire system is realistically tested. To simulate usage from many parts of the Internet, select the Dont use any of these option and enter several completely unique IP addresses. Consult the network administrator responsible for the load balancing system to learn which IP addresses can be used to create a balanced load across the entire system. Every IP packet is forwarded by hubs, routers, and web servers by means of a routing table. Routers, like hubs and web servers, know where to send a packet of information by referencing the final destination in its internal routing table and retrieving the IP address of the packet’s next step. The results of a web query must be forwarded by the web server back to the querys