Flow Monitoring

The flow monitoring application performs traffic flow monitoring and enables lawful interception of packets transiting between two routing platforms. Traffic flows can either be passively monitored by an offline routing platform or actively monitored by a routing platform participating in the network.

This feature guide covers the following topics:

• Overview

• Passive Flow Monitoring
• Active Flow Monitoring

• System Requirements
• Terms and Acronyms
• Configuring Passive Flow Monitoring

• Hardware and Software Considerations
• Example: Passive Flow Monitoring Configuration
• Checking Your Work
• Example: Flow Collector Interface Configuration
• Checking Your Work
• Example: Dynamic Flow Capture Configuration
• Checking Your Work

• Configuring Active Flow Monitoring

• Example: Sampling Configuration
• Checking Your Work
• Example: Sampling and Discard Accounting Configuration
• Checking Your Work
• Example: Multiple Port Mirroring with Next-Hop Groups Configuration

• cflowd Output Formats
• For More Information
• Revision History