Tag :: Sflow

Sflow samples can be augmented with additional Extended gateway data by getting data from BGP in addition to

Flow Analytics (Beta). NOTE: This is a beta feature in the 2019.1.0 and 2020.1.0 release and is not enabled by

sFlow is a sampling technique which monitors the incoming traffic on all the interfaces without affecting the network performance.

Sampled flow tracking with IPFIX export is supported on most of the Arista platforms. User configured sampling rate is used for sampling in ingress and/or egress direction on the configured interfaces. An EOS software agent on CPU processes samples received from hardware, samples are used to create flow records that are exported to IPFIX collectors. Refer to Sampled flow tracking TOI for additional details.

Network administrators require access to flow information that passes through various network elements, for the purpose of analyzing and monitoring their networks. This feature provides access to IP flow information by sampling traffic flows in ingress and/or egress directions on the interfaces on which it is configured.

Sflow samples can be augmented with additional Extended gateway data by getting data from BGP in addition to

When packets are encapsulated in tunnels via protocols such as GRE, sFlow samples with version 5 default extensions

The sFlow source IP address (also known as the agent IP address) is placed in the sFlow datagrams that the switch sends

Packets sampled for sFlow are packaged in a flow sample structure containing, amongst other things, input and output

Packets sampled for sFlow are packaged in a flow sample structure containing, amongst other things, input and output

The feature allows egress sFlow sampling to be enabled per a subinterface. The egress sFlow sampling per a subinterface configuration will only have effect when egress sFlow sampling is disabled on the parent interface as egress sFlow sampling on the parent interface includes traffic on all subinterfaces.

By default, sFlow samples that are generated have a fixed size: 128 bytes. This feature adds support for a

This feature adds support for a selected set of configured interfaces to collect egress flow samples. Egress sFlow can be configured on ethernet and port-channel interfaces.