Extreme Networks ExtremeWare XOS 11.0, Справочник по командам

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310 ExtremeWare XOS 11.0 Command Reference Guide
Commands for Status Monitoring and Statistics
sFlow Statistics
sFlow ® is a technology for monitoring traffic in data networks containing switches and routers. It relies
on statistical sampling of packets from high-speed networks, plus periodic gathering of the statistics. A
User Datagram Protocol (UDP) datagram format is defined to send the information to an external entity
for analysis. sFlow consists of a (Management Information Base) MIB and a specification of the packet
format for forwarding information to a remote agent. Details of sFlow specifications can be found in
RFC 3176 and at the following website:
http://www.sflow.org
ExtremeWare XOS allows you to collect sFlow statistics in hardware on a per port basis. An agent,
residing locally on the switch, sends data to a collector that resides on another machine. You configure
the local agent, the address of the remote collector, and the ports of interest for sFlow statistics
gathering. You can also modify default values for how frequently on average a sample is taken, how
often the data is sent to the collector, and the maximum load allowed on the CPU before throttling the
statistics gathering.