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How to configure sFlow on Dell Networking N Series Switches

Summary: How to configure Sflow on Dell Networking N Series switches running OS6

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.

Instructions

This article explains how to configure and verify sFlow on Dell Networking N Series switches running OS6.

Index

Overview

sFlow technology: sFlow is an industry standard technology for monitoring high-speed switched and routed networks. Dell Networking N Series switch software has a integrated sFlow agent that can monitor network traffic on each port and generate sFlow data to an sFlow receiver (also known as a collector).

sFlow defaults in N Series switches:
 

Parameter

Default Value

Receiver port

6343

Receiver Maximum Datagram Size

1400 bytes

Maximum header size

128 bytes


Configuration


To configure sFlow on the switch, input the following commands:
 

console> enable

Enter the privilege mode

console# configure

Enter the configuration mode

console(config)# sflow destination

Configure the address of the sFlow receiver and
(optionally) the destination UDP port for sFlow
datagrams.

console(config)# sflow destination owner timeout

Specify the identity string of the receiver and set the
receiver timeout value.

timeout - The number of seconds the configuration will be valid before it is automatically cleared. A value of 0 essentiality means that the receiver is not configured.

console(config)# sflow polling

Enable a new sFlow poller instance on an interface range.

console(config)# sflow sampling

Enable a new sFlow sampler instance for the specified
interface range.
 

 

Sample Configuration

Below is the example which gives a sample configuration of sFlow on switch with polling and sampling on interfaces from ten gig port 1 to 4.

This example uses the following input values.

IP address of the sFlow receiver -- 192.168.2.1
Owner string -- SFLOW_EXAMPLE
Receiver index -- 1
Polling interval -- 30 (Polling interval: The sFlow instance polling interval. A value of n means that once in n seconds a counter sample is generated. (Range: 0-86400))
Sampling rate -- 1204 (Sampling-rate - The statistical sampling rate for packet sampling from this source. A sampling rate of 1 counts all packets. A value of n means that out of n incoming packets, 1 packet will be sampled. (Range: 1024 - 65536)).

console> enable
console# configure
console(config)# sflow 1 destination 192.168.2.1
console(config)# sflow 1 destination owner SFLOW_EXAMPLE timeout 10000
console(config)# sflow 1 polling gi1/0/1-4 30
console(config)# sflow 1 sampling gi1/0/1-4 1024


Verify Configuration

To verify the configuration use the below commands:

console# show sflow 1 destination

Receiver Index.................... 1
Owner String...................... SFLOW_EXAMPLE
Time out.......................... 10000
IP Address:....................... 192.168.2.1
Address Type...................... 1
Port.............................. 6343
Datagram Version.................. 5
Maximum Datagram Size............. 1400

console# show sflow 1 polling
Poller Receiver Poller
Data Source Index Interval
----------- ------- -------
Te1/0/1     1     30
Te1/0/2     1     30
Te1/0/3     1     30
Te1/0/4     1     30


console# show sflow 1 sampling
Sampler Receiver Packet Max Header
Data Source Index Sampling Rate Size
----------- ------- ------------- ----------
Te1/0/1            1      1024        128
Te1/0/2            1      1024        128
Te1/0/3            1      1024        128
Te1/0/4            1      1024        128

 

Affected Products

PowerSwitch N2000 Series, PowerSwitch N3000 Series
Article Properties
Article Number: 000116368
Article Type: How To
Last Modified: 26 Feb 2024
Version:  5
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