home

Supported platforms

Vyatta NOS documentation

Learn how to install, configure, and operate Vyatta Network Operating System (Vyatta NOS), which helps to drive our virtual networking and physical platforms portfolio.

sFlow overview

sFlow, which stands for “sampled flow,” reports packet-flow and port-counter samples from a data plane interface to receiving collectors on a timely basis.

Note: In a Vyatta router, sFlow supports enough functionality and flexibility such that packet-forwarding performance does not drop significantly, yet still delivers enough processing power to provide a significant advantage when processing packets through the data plane pipeline.

You can configure a Vyatta router to perform the following tasks:

  • Sample packet flows.
  • Collect packet headers from sampled packets to gather inbound traffic information on these packets.
  • Collect byte and packet port-counter statistics (counter samples).
  • Compose flow sample messages from the collected information.
  • Relay messages to an external device known as a collector. A Vyatta router supports up to four collectors.
Figure 1. sFlow configuration example
Note: The Vyatta router supports sFlow (v5), which replaces the version outlined in RFC 3176.