What is sFlow ?
According to sFlow.org, sFlow® is an industry
standard technology for monitoring high speed switched networks. It gives
complete visibility into the use of networks enabling performance optimization,
accounting/billing for usage, and defense against security threats.
It further says, sFlow is a sampling technology that meets the key
requirements for a network traffic monitoring solution:
is an industry standard with interoperable implementations provided
by a wide range of network equipment and software application vendors
provides a network-wide view of usage and active routes. It is
a scalable technique for measuring network traffic, collecting, storing,
and analyzing traffic data. This enables tens of thousands of interfaces
to be monitored from a single location
is scalable, enabling it to monitor links of speeds up to 10Gb/s
and beyond without impacting the performance of core internet routers
and switches, and without adding significant network load
is a low cost solution. It has been implemented on a wide range
of devices, from simple L2 workgroup switches to high-end core routers,
without requiring additional memory and CPU
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