Path Jitter Test

An NQA UDP jitter test instance can accurately measure the delay and jitter along the path from the client to the server, but cannot figure out the faulty location if the jitter value is too great. An NQA path jitter test instance, however, can identify the router whose jitter value is great.

The NQA path jitter test first identifies the IP address of each hop from the client to the server by initiating a trace test, and then initiates an ICMP jitter test from the client to obtain the jitter value of each hop along the path. Figure 1 shows the process of a path jitter test:

1. Device A initiates a trace test to obtain the IP address of each hop along the path to DeviceC.

2. Device A initiates an ICMP jitter test to the IP address of each hop to obtain the jitter value of each hop.

Figure 1 Application scenario of a Path Jitter test