Patent ID: 7577734

Claim:
A load test execution apparatus for testing a load of accesses from clients to a server on a network, comprising: a client process managing unit that simultaneously operates a plurality of client processes for accessing said server, the plurality of client processes being run on said load test execution apparatus; a virtual network address assigning unit that assigns respectively-unique virtual network addresses to the plurality of client processes running on said load test execution apparatus; a transmission packet rewriting unit that rewrites a source address contained in a transmission packet for accessing said server by each of said client processes, from a physical network address of said load test execution apparatus which is common to the plurality of client processes into a respectively-unique virtual network address assigned to said client process; and a reception packet rewriting unit that rewrites a destination network address contained in a reception packet received from said server, from a respectively-unique virtual network address into the physical network address of said load test execution apparatus which is common to the plurality of client processes, and transfers the rewritten reception packet to the client process to which the respectively-unique virtual network address contained in the original reception packet is assigned.