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+# sFlow
+
+VyOS supports sFlow accounting for both IPv4 and IPv6 traffic. The system acts as a flow exporter, and you are free to use it with any compatible collector.
+
+sFlow is a technology that enables monitoring of network traffic by sending sampled packets to a collector device.
+
+The sFlow accounting based on hsflowd <https://sflow.net/>
+
+## Configuration
+
+```{cfgcmd} set system sflow agent-address \<address\>
+
+Configure sFlow agent IPv4 or IPv6 address
+```
+```{cfgcmd} set system sflow agent-interface \<interface\>
+
+Configure agent IP address associated with this interface.
+```
+```{cfgcmd} set system sflow drop-monitor-limit \<limit\>
+
+   Dropped packets reported on DROPMON Netlink channel by Linux kernel are exported via the standard sFlow v5 extension for reporting dropped packets
+```
+
+
+```{cfgcmd} set system sflow interface \<interface\>
+
+Configure and enable collection of flow information for the interface identified by \<interface\>.
+
+You can configure multiple interfaces which would participate in sflow accounting.
+```
+```{cfgcmd} set system sflow polling \<sec\>
+
+   Configure schedule counter-polling in seconds (default: 30)
+```
+
+
+```{cfgcmd} set system sflow sampling-rate \<rate\>
+
+Use this command to configure the sampling rate for sFlow accounting (default: 1000)
+```
+
+
+```{cfgcmd} set system sflow server \<address\> port \<port\>
+
+Configure address of sFlow collector. sFlow server at \<address\> can be both listening on an IPv4 or IPv6 address.
+```
+
+
+```{cfgcmd} set system sflow enable-egress
+
+Use this command to if you need to sample also egress traffic
+```
+
+## Example
+
+```none
+set system sflow agent-address '192.0.2.14'
+set system sflow agent-interface 'eth0'
+set system sflow drop-monitor-limit '50'
+set system sflow interface 'eth0'
+set system sflow interface 'eth1'
+set system sflow polling '30'
+set system sflow sampling-rate '1000'
+set system sflow server 192.0.2.1 port '6343'
+set system sflow server 203.0.113.23 port '6343'
+```