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23 FLOW SAMPLING COMMANDS
Flow sampling (sFlow) can be used with a remote sFlow Collector to
provide an accurate, detailed and real-time overview of the types and
levels of traffic present on the network. The sFlow Agent samples 1 out of n
packets from all data traversing the switch, re-encapsulates the samples as
sFlow datagrams and transmits them to the sFlow Collector. This sampling
occurs at the internal hardware level where all traffic is seen, whereas
traditional probes only have a partial view of traffic as it is sampled at the
monitored interface. Moreover, the processor and memory load imposed by
the sFlow agent is minimal since local analysis does not take place.
N
OTE
:
The terms “collector”, “receiver” and “owner”, in the context of this
chapter, all refer to a remote server capable of receiving the sFlow
datagrams generated by the sFlow agent of the switch.
sflow owner This command creates an sFlow collector on the switch. Use the no form to
remove the sFlow receiver.
SYNTAX
sflow owner owner-name
timeout timeout-value
[destination {ipv4-address | ipv6-address}]
[port destination-udp-port]
[max-datagram-size max-datagram-size]
[version {v4 | v5}]
no sflow owner owner-name
owner-name - Name of the collector. (Range: 1-30 alphanumeric
characters)
Table 69: sFlow Commands
Command Function Mode
sflow owner Creates an sFlow collector which the switch uses to
send samples to.
PE
sflow polling instance Configures an sFlow polling data source that takes
samples periodically based on time.
PE
sflow sampling instance Configures an sFlow sampling data source that
samples periodically based on a packet count.
PE
show sflow Shows the owner and interface settings for the sFlow
process
PE
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