Status and Statistics
sFlow
80 Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4
5
• Owner—Enter the name of the user or network management system that receives the
alarm.
STEP 4 Click Apply. The RMON alarm is saved to the Running Configuration file.
sFlow
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 collector.
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
collector 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)
Workflow
By default, flow and counter sampling are disabled.
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