What is a flow exporter?

What is a flow exporter?

Flow exporter is a tool that can take flow data (Netflow, sFlow, IPFIX) from Kafka and export it to Prometheus. These flow records can be helpful to visualize which autonomous systems traffic is coming from and going to.

What is flow exporter in Cisco?

Flow exporters are created as separate components in a router’s configuration. Exporters are assigned to flow monitors to export the data from the flow monitor cache to a remote system such as a NetFlow collector. Flow monitors can support more than one exporter.

What is a flow record?

It is used to record metadata about IP traffic flows traversing a network device such as a router, switch, or host. A NetFlow-enabled device generates metadata at the interface level and sends this information to a flow collector, where the flow records are stored to enable network traffic analytics.

What does a flow record consist of?

A typical flow monitoring setup (using NetFlow) consists of three main components: Flow exporter: aggregates packets into flows and exports flow records towards one or more flow collectors. Flow collector: responsible for reception, storage and pre-processing of flow data received from a flow exporter.

What does a flow record consist of Cisco?

Cisco standard NetFlow version 5 defines a flow as a unidirectional sequence of packets that all share seven values which define a unique key for the flow: Ingress interface (SNMP ifIndex) Source IP address. Destination IP address.

What is ip NBAR protocol discovery?

Network-Based Application Recognition (NBAR) includes a feature called Protocol Discovery. Protocol discovery provides an easy way to discover the application protocol packets that are passing through an interface. When you configure NBAR, the first task is to enable protocol discovery.

What is a flow record in NetFlow?

A flow record defines the information that NetFlow gathers, such as packets in the flow and the types of counters gathered per flow. You specify a series of “match” and “collect” commands that tell the router which fields to include in the outgoing NetFlow PDU.

What is IP flow and what networking vendor created it?

Developed by Cisco, NetFlow v9 is a program designed to collect information on network traffic. By monitoring the flow of information through routers and other devices, NetFlow is able to gather and analyze data packets, allowing you to develop a more detailed look at IP (Internet Protocol) traffic.

How do I configure NetFlow to export data from my router?

You must have NetFlow accounting configured on your router before you can use this command. You can configure a maximum of two concurrent destinations per-cache using the destination keyword with the export command. NetFlow aggregation caches export data in UDP datagrams using either the Version 9 or Version 8 export format.

What is an IPFIX flow?

Similar to the NetFlow Protocol, IPFIX considers a flow to be any number of packets observed in a specific timeslot and sharing a number of properties, e.g. ” same source, same destination, same protocol “. Using IPFIX, devices like routers can inform a central monitoring station about their view of a potentially larger network.

What is the difference between in and out traffic in NetFlow?

Since NetFlow, by default, is done on an ingress basis, when you enable NetFlow data export on interface A, it will only export the IN traffic for interface A and OUT traffic for interface B. The OUT traffic for interface A will be contributed by the NetFlow data exported from interface B.

What is the maximum number of destination IP addresses for export?

The ip flow-export destination command can support a maximum of two destination ip-address and udp-port combinations. The most common usage of the multiple-destination feature is to send the NetFlow cache entries to two different destinations for redundancy. Therefore, in most cases the second destination IP address is not the same as the first