I'm using Netstream.I tested PRTG server with netflowtester and netflowgenerator..

This is my netflowtester log

======================================
time,start,end,source,destination,size
9/30/2011 7:11:15 PM,9/15/2011 1:14:56 PM,9/30/2011 7:11:15 PM,10.195.133.250:137,10.195.133.255:137,1638
9/30/2011 7:11:15 PM,9/15/2011 1:14:57 PM,9/30/2011 7:11:15 PM,10.195.133.250:1802,255.255.255.255:43440,496
9/30/2011 7:11:17 PM,9/15/2011 1:14:59 PM,9/30/2011 7:11:17 PM,10.195.133.250:2048,192.168.1.2:512,240
9/30/2011 7:11:23 PM,9/15/2011 1:15:05 PM,9/30/2011 7:11:23 PM,10.195.133.250:1845,10.82.97.90:1352,96
9/30/2011 7:11:29 PM,9/15/2011 1:15:11 PM,9/30/2011 7:11:29 PM,192.168.1.2:59528,224.0.0.252:5355,58
======================================

When I try to get bandwidth information with custom netflow V5 sensor , the bandwidth and data transfferd amount does not seems right. Do you have any information about PRTG and Netstream?

Article Comments

What kind of "Netstream" are you using. Google finds a lot of different devices and internet providers.

You can activate the raw logging in the netflow sensor in PRTG to get a list of all received streams. Make sure the active flow timeout is configured correctly, if not data can be lost.

With Netflow information can be delayed since it is aggregated for the flows depending on the settings of the device.


Oct, 2011 - Permalink