Extreme Networks ExtremeWare XOS Command Reference Manual page 456

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 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.
RMON
RMON is the common abbreviation for the Remote Monitoring Management Information Base (MIB)
system defined by the Internet Engineering Task Force (IETF) documents RFC 1757 and RFC 2021,
which allows you to monitor LANs remotely.
Using the RMON capabilities of the switch allows network administrators to improve system efficiency
and reduce the load on the network.
The IETF defines nine groups of Ethernet RMON statistics. The switch supports the following four of
these groups, as defined in RFC 1757:
Statistics
●
History
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Alarms
●
Events
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The switch also supports the following parameters for configuring the RMON probe and the trap
destination table, as defined in RFC 2021:
probeCapabilities
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probeSoftwareRev
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probeHardwareRev
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probeDateTime
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probeResetControl
●
trapDestTable
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ExtremeWare XOS 11.3 Command Reference