FortiSwitch Netflow-IPFIX support with FortiOS 6.2

The Netflow / IPFIX protocol allows the collection of information about IP traffic passing through the network.

Devices that enable this protocol create "Netflow records" that are sent to a central aggregator. These packages contain information about what is happening in your infrastructure.

Never raw data is sent only statistical data, the information provided relates to layers 3 and 4, IP addresses, ports, protocols or other details.

Once this information is stored and analyzed, the administrator can clearly see the services running throughout his infrastructure.

If Fortinet supports FortiSwitch Netflow (v1, v5, v9) and IPFIX (Transfer IP Stream Information), this sampling information will provide new traffic statistics and topological insights in FortiAnalyzer (and FortiView) to see which users or devices on FortiSwitch have the most network traffic. can be used to see what you have created.

Netflow/IPFIX configuration in FortiSwitch managed by FortiGate

We can configure the parameters related to flow-tracking as follows
# conf switch-controller flow-tracking

(flow-tracking) # get

sample-mode: perimeter

sample-rate: 512

format: netflow9

collector-ip: 0.0.0.0 > all-zero IP address implies disabled

collector-port: 0

transport: udp

level: ip

filter: complies with tcpdump/wireshark filter syntax

max-export-pkt-size: 512

timeout-general: 3600

timeout-icmp: 300

timeout-max: 604800

timeout-tcp: 3600

timeout-tcp-fin: 300

timeout-tcp-rst: 120

timeout-udp: 300 aggregates

Currently the following sampling options are available

Perimeter Sampling

RX traffic instances are enabled on all non-FortiSwitch ports, including access points and FortiLink, but on ISL ports, including access ports and FortiLink.

Device-Ingress Sampling
RX traffic instances are enabled on all FortiSwitch ports.

Local sampling

Allowed in certain areas of FortiSwitch.

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