Flexible Netflow Configuration Guide, Cisco IOS XE Release 3SE (Cisco WLC 5700 Series)
Flexible NetFlow v9 Export Format
Downloads: This chapterpdf (PDF - 126.0KB) The complete bookPDF (PDF - 1.01MB) | Feedback

Flexible NetFlow v9 Export Format

Flexible NetFlow v9 Export Format

Last Updated: January 29, 2013

This feature enables sending export packets using the Version 9 export format.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.

Prerequisites for Flexible NetFlow v9 Export Format

  • The networking device must be running a Cisco release that supports Flexible NetFlow.

Information About Flexible NetFlow v9 Export Format

Flow Exporters

Flow exporters are created as separate components in a router's configuration. Exporters are assigned to flow monitors to export the data from the flow monitor cache to a remote system such as a NetFlow collector. Flow monitors can support more than one exporter. Each exporter can be customized to meet the requirements of the flow monitor or monitors in which it is used and the NetFlow collector systems to which it is exporting data.

Benefits of Flexible NetFlow Flow Exporters

Flexible NetFlow allows you to configure many different flow exporters, depending on your requirements. Some of the benefits of Flexible NetFlow flow exporters are as follows:

  • Using flow exporters, you can create an exporter for every type of traffic that you want to analyze so that you can send each type of traffic to a different NetFlow collector. Original NetFlow sends the data in a cache for all of the analyzed traffic to a maximum of two export destinations.
  • Flow exporters support up to ten exporters per flow monitor. Original NetFlow is limited to only two export destinations per cache.
  • Flow exporters can use both TCP and UDP for export.
  • Depending on your release, flow exporters can use class of service (CoS) in the packets that are sent to export destinations to help ensure that the packets are given the correct priority throughout the network. Original NetFlow exporters do not use CoS in the packets that are sent to export destinations.
  • Depending on your release, flow exporter traffic can be encrypted.

How to Configure Flexible NetFlow v9 Export Format

Configuring the Flow Exporter

Perform this required task to configure the flow exporter.


Note


Each flow exporter supports only one destination. If you want to export the data to multiple destinations, you must configure multiple flow exporters and assign them to the flow monitor.

You can export to a destination using either an IPv4 or IPv6 address.


SUMMARY STEPS

1.    enable

2.    configure terminal

3.    flow exporter exporter-name

4.    description description

5.    destination {ip-address | hostname} [vrf vrf-name]

6.    export-protocol {netflow-v5 | netflow-v9 | ipfix}

7.    dscp dscp

8.    source interface-type interface-number

9.    option {exporter-stats | interface-table | sampler-table | vrf-table} [timeout seconds]

10.    output-features

11.    template data timeout seconds

12.    transport udp udp-port

13.    ttl seconds

14.    end

15.    show flow exporter exporter-name

16.    show running-config flow exporter exporter-name


DETAILED STEPS
  Command or Action Purpose
Step 1
enable


Example:

Device> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Device# configure terminal

 

Enters global configuration mode.

 
Step 3
flow exporter exporter-name


Example:

Device(config)# flow exporter EXPORTER-1

 

Creates the flow exporter and enters Flexible NetFlow flow exporter configuration mode.

  • This command also allows you to modify an existing flow exporter.
 
Step 4
description description


Example:

Device(config-flow-exporter)# description Exports to the datacenter

 

(Optional) Configures a description to the exporter that will appear in the configuration and the display of the show flow exporter command.

 
Step 5
destination {ip-address | hostname} [vrf vrf-name]


Example:

Device(config-flow-exporter)# destination 172.16.10.2

 

Specifies the IP address or hostname of the destination system for the exporter.

Note    You can export to a destination using either an IPv4 or IPv6 address.
 
Step 6
export-protocol {netflow-v5 | netflow-v9 | ipfix}


Example:

Device(config-flow-exporter)# export-protocol netflow-v9

 

Specifies the version of the NetFlow export protocol used by the exporter. The export of extracted fields from NBAR is supported only over IPFIX.

  • Default: netflow-v9.
 
Step 7
dscp dscp


Example:

Device(config-flow-exporter)# dscp 63

 

(Optional) Configures differentiated services code point (DSCP) parameters for datagrams sent by the exporter.

  • The range for the dscp argument is from 0 to 63. Default: 0.
 
Step 8
source interface-type interface-number


Example:

Device(config-flow-exporter)# source ethernet 0/0

 

(Optional) Specifies the local interface from which the exporter will use the IP address as the source IP address for exported datagrams.

 
Step 9
option {exporter-stats | interface-table | sampler-table | vrf-table} [timeout seconds]


Example:

Device(config-flow-exporter)# option exporter-stats timeout 120

 

(Optional) Configures options data parameters for the exporter.

  • You can configure all three options concurrently.
  • The range for the seconds argument is 1 to 86,400. Default: 600.
 
Step 10
output-features


Example:

Device(config-flow-exporter)# output-features

 

(Optional) Enables sending export packets using quality of service (QoS) and encryption.

 
Step 11
template data timeout seconds


Example:

Device(config-flow-exporter)# template data timeout 120

 

(Optional) Configures resending of templates based on a timeout.

  • The range for the seconds argument is 1 to 86400 (86400 seconds = 24 hours).
 
Step 12
transport udp udp-port


Example:

Device(config-flow-exporter)# transport udp 650

 

Specifies the UDP port on which the destination system is listening for exported datagrams.

  • The range for the udp-port argument is from 1 to 65536.
 
Step 13
ttl seconds


Example:

Device(config-flow-exporter)# ttl 15

 

(Optional) Configures the time-to-live (TTL) value for datagrams sent by the exporter.

  • The range for the seconds argument is from 1 to 255.
 
Step 14
end


Example:

Device(config-flow-exporter)# end

 

Exits flow exporter configuration mode and returns to privileged EXEC mode.

 
Step 15
show flow exporter exporter-name


Example:

Device# show flow exporter FLOW_EXPORTER-1

 

(Optional) Displays the current status of the specified flow exporter.

 
Step 16
show running-config flow exporter exporter-name


Example:

Device# show running-config flow exporter FLOW_EXPORTER-1

 

(Optional) Displays the configuration of the specified flow exporter.

 

Configuration Examples for Flexible NetFlow v9 Export Format

Example: Configuring NetFlow v9 Export Format

The following example shows how to configure version 9 export for Flexible NetFlow.

This example starts in global configuration mode.

!
flow exporter EXPORTER-1
 destination 172.16.10.2
 export-protocol netflow-v9
 transport udp 90
 exit
!
flow record v4_r1
match ipv4 tos
match ipv4 protocol
match ipv4 source address
match ipv4 destination address
match transport source-port
match transport destination-port
collect counter bytes long
collect counter packets long
!
flow monitor FLOW-MONITOR-1
 record v4_r1
 exporter EXPORTER-1
!
ip cef
!
interface GigabitEthernet 0/0/0
 ip address 172.16.6.2 255.255.255.0
 ip flow monitor FLOW-MONITOR-1 input
!

Additional Reference for Flexible NetFlow v9 Export Format

Related Documents

Related Topic

Document Title

Cisco IOS commands

Cisco IOS Master Command List, All Releases

Flexible NetFlow conceptual information and configuration tasks

Flexible NetFlow Configuration Guide

Flexible NetFlow commands

Cisco IOS Flexible NetFlow Command Reference

Standards

Standard

Title

None

--

MIBs

MIB

MIBs Link

None

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs

RFCs

RFC

Title

RFC 3954

Cisco Systems NetFlow Services Export Version 9

Technical Assistance

Description

Link

The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies.

To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds.

Access to most tools on the Cisco Support website requires a Cisco.com user ID and password.

http://www.cisco.com/cisco/web/support/index.html

Feature Information for Flexible NetFlow - NetFlow v9 Export Format

The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.

Table 1 Feature Information for Flexible NetFlow - NetFlow v9 Export Format

Feature Name

Releases

Feature Information

Flexible NetFlow - NetFlow v9 Export Format

12.2(33)SRE

12.2(50)SY

12.4(9)T

15.0(1)SY

15.0(1)SY1

Cisco IOS XE Release 3.1S

Cisco IOS XE Release 3.2SE

This feature enables sending export packets using the Version 9 export format.

Support for this feature was added for Cisco 7200 and 7300 Network Processing Engine (NPE) series routers in Cisco IOS Release 12.2(33)SRE.

The following commands were introduced or modified: export-protocol.

Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)

Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.

© 2013 Cisco Systems, Inc. All rights reserved.