For further reading: sFlow.org – the official standard.
| Tool | Description | |------|-------------| | | Turns sFlow into NetFlow | | pmacct | Lightweight, stores in SQL/Redis | | ElastiFlow | Integrates with Elasticsearch + Kibana | | sflowtool | Command-line decoder (debugging) | sflow capture tool
EOF sudo systemctl restart hsflowd Popular open-source collectors: For further reading: sFlow
set protocols sflow collector <collector-ip> udp-port 6343 set protocols sflow sampling-rate 1000 set protocols sflow interfaces ge-0/0/0 sFlow (Sampled Flow) is an industry-standard technology for
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
# 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