Sflow - Dell PowerConnect 5548P System User's Manual

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sFlow

This section describes sFlow monitoring of traffic.
It contains the following sections:
• sFlow Overview
• Workflow
• sFlow Receiver Settings
• sFlow Interface Settings
• sFlow Statistics
sFlow Overview
The sFlow feature enables collecting statistics using the sFlow sampling
technology, based on sFlow V5.
This sampling technology is embedded within switches and routers. It
provides the ability to continuously monitor traffic flows on some or all the
interfaces, simultaneously.
The sFlow monitoring system consists of an sFlow agent (embedded in a
switch or router or in a stand alone probe) and a central data collector, known
as the sFlow receiver.
The sFlow agent uses sampling technology to capture traffic and statistics
from the device it is monitoring. sFlow datagrams are used to forward the
sampled traffic and statistics to an sFlow receiver for analysis.
sFlow V5 defines:
• How traffic is monitored.
• The sFlow MIB that controls the sFlow agent.
• The format of the sample data used by the sFlow agent when forwarding
data to a central data collector. The device provides support for two types
of sFlow sampling: flow sampling and counters sampling. The following
counters sampling is performed according to sFlow V5 (if supported by
the interface):
– Generic interface counters (RFC 2233)
– Ethernet interface counters (RFC 2358)
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