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.. _ntp:
#####
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 whould 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.
Example
=======
.. code-block:: 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'
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