sFlow - Making the Network Visible

Developer Information

Licensing Objectives

Specifications

sFlow Developer Tools

Search sFlow.org
Specifications

sFlow Version 5 documents the interfaces (SFLOW-MIB), packet formats (SFLOW-DATAGRAM), data structures (SFLOW-STRUCTS) and functional requirements of an sFlow Version 5 Agent. Errata exist

Elisa Jasinska of AMS-IX B.V. has provided format diagrams for sFlow Packet sFlow Datagram sFlow Sample Counter Sample Flow Sample. Please note, the definitive specifications are given in the textual documents above.

sFlow 802.11 Structures describes additional sFlow structures used to report on 802.11 traffic.

sFlow LAG Counters Structure describes an additional sFlow counter structure to report on IEEE 802.1AX Link Aggregation Control Protocol (LACP).

sFlow Tunnel Structures describes additional sFlow structures used to report encapsulation/decapsulation of packets.

sFlow OpenFlow Structures describes addition sFlow structures when packet forwarding is controlled by OpenFlow or other programmatic APIs.

sFlow Host Structures describes additional sFlow structures used to report server performance. Errata exist

sFlow Java Virtual Machine Structures describes additional sFlow structures used to report Java virtual machine performance.

sFlow Memcache Structures describes additional sFlow structures used to report Memcache performance.

sFlow HTTP Structures describes additional sFlow structures used to report HTTP performance.

sFlow Application Structures describes additional sFlow structures used to report generic application performance.

sFlow NVML GPU Structures describes additional sFlow structure used to report on NVIDIA GPU performance, status and health.

sFlow Structure Numbers provides a complete catalog of standard and proposed sFlow structures.

Logical Entity SFlowDataSource Index Numbers describes how data source indices are allocated to avoid clashes between sub-agents on a host

sFlow Errata provides a list of corrections to published sFlow specifications.

Discussion relating to these documents occurs on the sFlow Discussion Board.

Note: Previous versions of sFlow; version 4 and version 2 are deprecated. New implementations of sFlow should use the version 5 specifications.