Cflowd
Router Configuration Guide 709
Configuring Cflowd with CLI
This section provides information to configure cflowd using the command line interface.
Topics in this section include:
• Cflowd Configuration Overview
→ Traffic Sampling
→ Collectors
→ Aggregation
• Basic Cflowd Configuration
• Common Configuration Tasks
→ Enabling Cflowd
→ Configuring Global Cflowd Parameters
→ Configuring Cflowd Collectors
→ Dependencies
→ Enabling Cflowd on Interfaces and Filters
→ Specifying Cflowd Options on an IP Interface
→ Specifying Sampling Options in Filter Entries
• Cflowd Configuration Management Tasks
→ Modifying Global Cflowd Components
→ Modifying Cflowd Collector Parameters
Cflowd Configuration Overview
The SR OS implementation of cflowd supports the option to analyze traffic flow. The
implementation also supports the use of traffic/access list (ACL) filters to limit the type of
traffic that is analyzed.
Traffic Sampling
Traffic sampling does not examine all packets received by a router. Command parameters
allow the rate at which traffic is sampled and sent for flow analysis to be modified. The
default sampling rate is every 1000th packet. Excessive sampling over an extended period of
time, for example, more than every 1000th packet, can burden router processing resources.
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