I note the information in the following kb article about QOS Reflectors: https://kb.paessler.com/en/topic/61176-how-can-i-monitor-qos-roundtrips-without-using-remote-probes
and have the following questions:
1. In a test setup, I installed a QOS sensor on a PRTG server, and installed Python for Windows on a Windows Vista machine. I then executed the reflector script on the Vista machine - and have been receiving results. Unlike the documentation, I have the "QOS TARGET" setting on the sensor set to "PRTG Probe" (where the documentation says use "Custom Target".
This setup is successfully capturing statistics - but my question is - do these settings in combination with a Windows machine running the QOS Reflector render the results invalid ? (FYI - they APPEAR correct - but I have no way to validate).
2. In attempting to setup a QOS Two Way sensor with "QOS TARGET" set to "Custom Target" per the instructions - I received the following error message:
THERE WAS A PROBLEM...
PRTG Network Monitor has encountered a problem. Your last request could not be processed properly.
INTERNAL ERROR: '' IS NOT A VALID INTEGER VALUE
Error URL: /addsensor5.htm?errorintervalsdown_=1&id=2102&inherittriggers=1&interval_=60|60 seconds&intervalgroup=0&intervalgroup=1&name_=QoS 2&packetcount_=1000&packetinterval_=20&packetsize_=172&parenttags_=&priority_=3&qostargetmaster_=custom&sensortype=qosroundtrip&tags_=qossensor&targetid_=1|Local probe (127.0.0.1)|127.0.0.1|&targetip_=192.168.1.98&targetport_=50000&timeout_=60&
3. In the results captured (per question 1), I note that both Jitter and PDV statistics are captured, yet there is a significant difference between (for example) Jitter (Max) and Packet Delay Variation (Max). Can you explain this and provide information on the measurement method for each of these ?
Your assistance is appreciated,