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Flow sampling commands, Sflow, Chapter 8 – Brocade 6910 Ethernet Access Switch Configuration Guide (Supporting R2.2.0.0) User Manual

Page 189: Table 32, Chapter

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Brocade 6910 Ethernet Access Switch Configuration Guide

133

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Chapter

8

Flow Sampling Commands

In this chapter

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.

sflow

This command enables sFlow globally for the switch. Use the no form to disable this feature.

Syntax

[no] sflow

Default Setting
Disabled

Command Mode
Global Configuration

Command Usage
Flow sampling must be enabled globally on the switch, as well as for those ports where it is
required (see the

sflow source

command).

TABLE 32

sFlow Commands

Command

Function

Mode

sflow

Enables sFlow globally for the switch

GC

sflow destination

Configures the IP address and UDP port used by the Collector

IC

sflow forwarding

Enables packet forwarding on the specified interface

IC

sflow max-datagram-size

Configures the maximum size of the sFlow datagram payload

IC

sflow max-header-size

Configures the maximum size of the sFlow datagram header

IC

sflow owner

Configures the name of the receiver

IC

sflow polling-interval

Configures the interval at which counters are added to the sample
datagram

IC

sflow sample

Configures the packet sampling rate

IC

sflow source

Enables sFlow on the source ports to be monitored

IC

show sflow

Shows the global and interface settings for the sFlow process

PE