This article explains how you can troubleshoot the following problem.

This configuration must have been already done in your network.

1. Trisul Network Analytics installed in Netflow mode
2. Atleast one device configured to send Netflow to Trisul IP address
3. Wait for atleast 5 minutes after starting Trisul

If there is still no data in Trisul, please run through the following checklist.

Check whether Netflow records are indeed coming in on the Trisul interface using tcpdump.

Say you have configured the following.

1. interface name : eth0
2. port number on which netflow is expected : UDP 2055

run the following command

tcpdump -nnn -i eth0 'port 2055'

Do you see netflow packets on the screen ?

Yes. Move to next

No. Check the following.