Planet XGS3-24042 User Manual download pdf (Page 622)

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Chapter 62 ULSM Configuration

71-1

Chapter 71 sFlow Configuration

71.1 Introduction to sFlow

The sFlow (RFC 3176) is a protocol based on standard network export and used on monitoring the network

traffic information developed by the InMon Company. The monitored switch or router sends date to the client

analyzer through its main operations such as sampling and statistic, then the analyzer will analyze according

to the user requirements so to monitor the network.

A sFlow monitor system includes: sFlow proxy, central data collector and sFlow analyzer. The sFlow proxy

collects data from the switch using sampling technology. The sFlow collector is for formatting the sample data

statistic which is to be forwarded to the sFlow analyzer which will analyze the sample data and perform

corresponding measure according to the result. Our switch here acts as the proxy and central data collector in

the sFlow system. We have achieved data sampling and statistic targeting physical port.

Our data sample includes the IPv4 and IPv6 packets. Extensions of other types are not supported so far. As

for non IPv4 and IPv6 packet, the unify HEADER mode will be adopted following the requirements in

RFC3176, copying the head information of the packet based on analyzing the type of its protocol.

The latest sFlow protocol presented by InMon Company is the version 5. Since it is the version 4 which is

realized in the RFC3176, version conflict might exist in some case such as the structure and the packet format.

This is because the version 5 has not become the official protocol, so, in order to be compatible with current

applications, we will continue to follow the RFC3176.

71.2 sFlow Configuration Task List

1. Configure sFlow Collector address

Command

Explanation

Global mode and Port Mode

sflow destination <collector-address>

[<collector-port>]

no sflow destination

Configure the IP address and port number of

the host in which the sFlow analysis software

is installed. As for the ports, if IP address is

configured on the port, the port configuration

will be applied, or else will be applied the

global configuration. The “

no sflow

destination” command restores to the default

port value and deletes the IP address.

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