Path Plus is a collection of basic network investigation tools, e.g., ping, traceroute, and nslookup, plus a traffic generator called PathTest. PathTest is very similar to other bandwidth measurement tools like speedtest.net, where bandwidth is measured in a destructive fashion. Essentially PathTest generates huge bursts of packets with the goal of entirely saturating the path to the target. When PathTest starts to see massive loss it marks that point as the maximum bandwidth. While this flooding technique produces accurate results, it does make the network inoperable for the duration of the test.
Here are a few examples of how you can use PathTest:
- Verify that a link can achieve the capacity provisioned by your ISP.
- Generate traffic with a dscp marking to verify or stress a traffic engineering strategy.
- When separate bandwidth is allocated to data and voice, use PathTest with voice delivery monitoring to stress the network with both types of traffic at the same time.