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Does my Cisco device (router/switch) support NetFlow export?



Determining which Cisco devices (and in what version) support NetFlow export can become quite complicated. PRTG Network Monitor currently supports NetFlow v5, v9, and IPFIX.

catalyst cisco ios ipfix netflow prtg version xflow

Created on Jun 7, 2010 8:49:17 AM by  Daniel Zobel [Product Manager]

Last change on Jan 4, 2023 11:46:20 AM by  Brandy Greger [Paessler Support]

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Accepted Answer



This article applies as of PRTG 22

Hardware-based Cisco switches

Hardware-based switches like the 4000/4500– and 6000/6500 series perform the processing of data packets inside their hardware application-specific integrated circuits (ASICs). They can only export NetFlow if this feature is built into their hardware, which is only the case for top-notch supervisor cards, and may even require the additional NetFlow card.

Here are a few particular characteristics.

Catalyst 4k/4000

Model(s)NetFlow supportIOSNetFlow version(s)
Supervisor I, II, II Plus, IIInone
Supervisor IVoptional, requires NetFlow Daughter Card12.1.(19)EWV1, V5, V8
Supervisor Voptional, requires NetFlow Daughter Card12.2(25)SGV1, V5, V8
Supervisor V-10GEbuilt-in12.2(25)EWV5, V8

PRTG currently supports NetFlow v5, v9, and IPFIX.

Catalyst 6k/6000

The configuration can be quite complicated for these models, depending on the code that you are running on the Cat6k. Available options are CATOS, hybrid, and native mode, which have all different features and capabilities. There are also different versions of NetFlow export, if the export comes from the SP or from the RP (slow path/fast path).

Model 12000

ModelNetFlow supportIOSNetFlow version(s)
12000yes12.3(1), 12.0(24)S, 12.2(18)S, 12.3(2)TV9

PRTG currently supports NetFlow v5, v9, and IPFIX.

Other Cisco devices and software-based routers

Basically, all software-based Cisco devices with Cisco IOS software (most smaller routers) may be able to support NetFlow export v5 with IOS version 11.1CA or later.

Note: Not everything that is configurable under the IOS is supported and tested by Cisco.

Device(s)NetFlow supportIOSNetFlow version(s)
All software-basedlikely11.1CA or laterV5
Cisco 800, 1700, 2600, 3600, 3700, 6400, 7200, 7300, 7500yes12.3(1), 12.0(24)S, 12.2(18)S, 12.3(2)TV9

Have a close look at the release notes for details.

Also keep in mind that when the NetFlow export is processed by the software, you should expect some CPU load impact. Carefully watch the CPU load of your device.


Created on Jun 7, 2010 9:22:49 AM by  Daniel Zobel [Product Manager]

Last change on Jun 29, 2022 11:53:27 AM by  Brandy Greger [Paessler Support]

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.