Introduces Flexible NetFlow architecture and components, then guides through configuring flow records, exporters, monitors, and samplers for comprehensive network traffic analysis.
Flexible NetFlow
This topic explains the Flexible NetFlow feature, which provides statistics for accounting, network monitoring, and planning by using flows and customizable flow records.
Flexible NetFlow benefits
This topic explains the benefits and applications of Flexible NetFlow, including its customizable flow recognition and enhanced security monitoring capabilities.
Restrictions for Flexible NetFlow
Use these guidelines when configuring Flexible NetFlow to ensure compatibility, feature support, and correct operation across different interfaces and platforms.
Flexible NetFlow components
This topic explains the components of Flexible NetFlow and how they can be used together for traffic analysis and data export.
Flexible NetFlow fields
This topic explains the supported Flexible NetFlow (FNF) fields for various traffic types and directions, including key and collect fields, and notes on VLAN field length accounting.
Default settings
This topic explains the Flexible NetFlow default settings for the device.
Flexible NetFlow for Ingress VRF
This topic explains the Flexible NetFlow—Ingress VRF Support feature, which enables collecting the VRF ID from incoming packets on a device using an input flow monitor with a flow record that collects the VRF ID as a key field.
Flexible Netflow for Egress VRF
This topic explains how the Flexible Netflow—Egress VRF Support feature enables collecting the VRF ID from outgoing packets on a device using an output flow monitor.
Autonomous system number
This topic explains the concept of Autonomous System Numbers (AS numbers), their structure, assignment, and role in supporting the Internet's public inter-domain routing system, especially in the context of NetFlow and BGP.
Configure a flow record
Learn how to configure a customized flow record to analyze traffic data using Flexible NetFlow. This procedure guides you through creating and verifying a flow record for your requirements.
Create a flow exporter
Learn how to create a flow exporter to define export parameters for a flow, including destination, protocol, and interface settings.
Create a customized flow monitor
Learn how to create a customized flow monitor using Flexible NetFlow, including prerequisites, configuration steps, and verification commands.
Create a flow sampler
Learn how to configure and enable a flow sampler to monitor network traffic using sampling methods.
Apply a flow to an interface
Learn how to apply a flow monitor and an optional sampler to an interface to enable Flexible NetFlow monitoring for IPv4, IPv6, and datalink traffic.
Configure a bridged NetFlow on a VLAN
Learn how to configure a bridged NetFlow on a VLAN by applying a flow monitor and an optional sampler to a VLAN interface.
Configure Layer 2 NetFlow
Learn how to configure Layer 2 NetFlow by defining Layer 2 keys in Flexible NetFlow records to capture flows on Layer 2 interfaces.
Monitor Flexible NetFlow
This topic explains how to monitor Flexible NetFlow using various show commands to display information and statistics about flow exporters, monitors, interfaces, records, and samplers.
Flow configuration commands
Describes the configuration of a flow and its application to an interface using CLI commands. This process enables network traffic monitoring and data export for analysis.
Flexible NetFlow flow monitor configuration example
Describes the configuration of flow records, exporters, and monitors to track IPv4 ingress traffic between network interfaces. This setup enables network traffic analysis using NetFlow.
NetFlow monitoring parameters for IPv4 egress traffic
Describes the configuration of flow records, exporters, and monitors to track IPv4 egress traffic using NetFlow. This setup enables the collection and export of traffic statistics to network collectors for analysis.
Flexible NetFlow for ingress VRF monitoring
Provides an example to show how to configure Flexible NetFlow for Ingress VRF Support.
Flexible NetFlow for egress VRF configuration
Describes the configuration of VRF ID collection from outgoing packets on a switch. This process enables network monitoring and analysis based on VRF routing context for egress traffic.
Feature history for Flexible NetFlow
Provides release and related information for Flexible NetFlow features explained in this module.