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Engineer's Toolset

Forum Netflow not Capturing flow information

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Netflow not Capturing flow information

Oristilli over 14 years ago

We have used the netflow configurator to successfully configure netflow on our cisco compatible netflow devices and have been able to capture flow info in the past, but now when we try to start flow capture, we get netflow is not detected on any device we select, we also recieved a netflow is not listening on port 2055 error earlier on. The most recent update to Orion is the service pack 5 update which was done about 2months ago. Unfortunately I am not sure when this problem began. We are currently using the solarwind toolset launchpad version 9.2.0.4

0 floyd.may over 14 years ago

Are you using Orion NetFlow Traffic Analysis (Orion NTA) on the same box as Toolset? If so, it is possible that the Orion NTA collector has port 2055 open. Try shutting down the NTA collector service. You may also want to use "netstat -abn -p UDP" on the command line to see if you have another app using UDP port 2055. Also, you may want to verify using a packet sniffer (e.g. Wireshark) that you are receiving flows. If you verify that you are indeed receiving flows, and that another app isn't using port 2055, check in the rightmost column of the first screen that NetFlow Realtime shows you when it first starts - there should be a green checkmark for each interface from which NetFlow Realtime has seen flows. Unless it has seen flows regarding a particular interface, NetFlow Realtime will not allow you to begin a capture for that interface.
Let me know if this helps.
Thanks,
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0 AllisonB over 14 years ago in reply to floyd.may

Oristilli, if Floyd's suggestions don't resolve this, I suggest you open a ticket with support for this one.
Let us know...
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