03-05-2013, 04:41 PM
The multiple IP address feature is applicable to the Web and WinSocket protocols
The multiple IP address.ppt (Size: 125.5 KB / Downloads: 19)
About Multiple IP Addresses
Application servers and network devices use IP addresses to identify clients. The application server often caches information about clients coming from the same machine. Network routers try to cache source and destination information to optimize throughput. If many users have the same IP address, both the server and the routers try to optimize. Since Vusers on the same host machine have the same IP address, server and router optimizations do not reflect real- life situations.
LoadRunner’s multiple IP address feature enables Vusers running on a single machine to be identified by many IP addresses. The server and router recognize the Vusers as coming from different machines and as a result, the testing environment is more realistic.
Adding IP Addresses to a Host
LoadRunner includes an IP Wizard program that you run on each host machine to create multiple IP addresses. You add new IP addresses to a machine once and use the addresses for all scenarios.
The following procedure summarizes how to add new IP addresses to a host:
1 Run the IP Wizard on the host machine to add a specified number of IP addresses.
2 Re- start the host machine.
3 Update the server’s routing table with the new addresses, if necessary.
4 Enable this feature from the Controller. Refer to see Enabling Multiple IP Addressing from the Controller,
Updating the Routing Table
Now that the client machine has new IP addresses, the server needs the addresses in its routing table, so it can recognize the route back to the client. It the server and client share the same netmask, IP class and network, the server’s routing table does not require modification.