Sflow Capture Tool [2021] -

1. What is sFlow? sFlow (Sampled Flow) is an industry-standard technology for monitoring network traffic. Unlike full packet capture tools (like tcpdump) or flow aggregation protocols (like NetFlow), sFlow uses statistical sampling to monitor all traffic at wire speed without impacting performance.

configure terminal sflow collector <collector-ip> port 6343 sflow polling-interval 20 sflow sampling-rate 1000 interface ethernet 1/1 sflow enable sflow capture tool

For further reading: sFlow.org – the official standard. Unlike full packet capture tools (like tcpdump) or

set protocols sflow collector <collector-ip> udp-port 6343 set protocols sflow sampling-rate 1000 set protocols sflow interfaces ge-0/0/0 sflow capture tool

# Install Host sFlow agent sudo apt install hsflowd # Debian/Ubuntu sudo yum install hsflowd # RHEL/CentOS sudo tee /etc/hsflowd.conf <<EOF sflow collector ip = 192.168.1.100 samplingRate = 1000 pollingInterval = 20

| Tool | Description | |------|-------------| | | Turns sFlow into NetFlow | | pmacct | Lightweight, stores in SQL/Redis | | ElastiFlow | Integrates with Elasticsearch + Kibana | | sflowtool | Command-line decoder (debugging) |