Users Guide

Switch Management Commands 2163
Sflow Commands
sFlow
®
is the standard for monitoring high-speed switched and routed
networks. sFlow technology is built into network equipment and gives
complete visibility into network activity, enabling effective management and
control of network resources.
The sFlow monitoring system consists of an sFlow Agent (embedded in a
switch or router or in a stand-alone probe) and a central sFlow Collector. The
sFlow Agent uses sampling technology to capture traffic statistics from the
device it is monitoring. sFlow datagrams are used to forward the sampled
traffic statistics immediately to an sFlow Collector for analysis. The traffic
samples sent to the Collector contain the source ifIndex and, for switched
packets, the destination ifIndex.
The sFlow Agent supports two forms of sampling: statistical packet-based
sampling of switched or routed Packet Flows and time-based sampling of
counters.
sflow destination
Use the sflow destination command to configure the sFlow collector
parameters (owner string, receiver timeout, maxdatagram, ip address and
port). Use the “no” form of this command to set receiver parameters to the
default or remove a receiver.
Syntax
sflow rcvr_index destination {ip-address [port] | maxdatagram size | owner
“owner_string” {notimeout|timeout rcvr_timeout}}
no sflow rcvr_index destination [ip-address | maxdatagram | owner]
• rcvr_index — The index of this sFlow Receiver (Range: 1–8).
• ip-address — The sFlow receiver IP address. If set to 0.0.0.0, no sFlow
datagrams will be sent.
• size — The maximum number of data bytes that can be sent in a single
sample datagram. The management entity should set this value to avoid
fragmentation of the sFlow datagrams. (Range: 200–9116 bytes).