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sFlow from FortiGate incorrect data

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I have setup sFlow on a FortiGate 60C to send data to PRTG, I am receiving data however the amount of traffic reported is about double what it should be. I have reduced the number of interfaces sampled to just one WAN interface and it is still reporting double the traffic (on average). What can I do about this?

fortigate prtg sflow

Created on Nov 12, 2013 10:38:01 PM



3 Replies

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If you use our sFlow Tester, do you get the same results?

Created on Nov 13, 2013 3:40:15 PM by Patrick Hutter [Paessler Support] (7,225) ●3 ●3



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I have just tried the sFlow tester. I don't really understand the results it is showing. It is receiving several sFlow's a second though I set the polling-interval to 60 seconds.

The results show a source and destination IP and port, timestamp. Is the number at the end the size of the packet sampled in bytes?

Created on Nov 13, 2013 10:56:17 PM



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Please forward us the test results to [email protected], so that we can have a look at them. Please refer to this thread, in order to be able to associate the ticket with this case.

Created on Nov 15, 2013 9:34:49 AM by Patrick Hutter [Paessler Support] (7,225) ●3 ●3




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