[2021] Free Sflow Collector -

Ensure -i sflow:// is correct interface – use 0.0.0.0 to listen on all.

[[inputs.sflow]] service_address = "udp://:6343" sample_limit = 1000 [[outputs.influxdb]] urls = ["http://localhost:8086"] database = "sflow_data" free sflow collector

Here’s a practical guide to setting up a , including what sFlow is, why you might need it, and which open-source tools work best. 1. What is sFlow? sFlow (Sampled Flow) is an industry-standard technology for monitoring network traffic. Unlike NetFlow (which exports every flow’s summary), sFlow samples packets randomly, making it more scalable for high-speed networks. Ensure -i sflow:// is correct interface – use 0

Create database:

sflowtool -p 6343 | python3 my_analyzer.py Example Python snippet: What is sFlow

sudo apt install sflowtool sflowtool -p 6343 -l | tee /var/log/sflow.log Pipe to custom parser (e.g., Python):

# Check if sFlow packets arrive sudo tcpdump -i eth0 udp port 6343 -c 10 show sflow