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No netflow data on 4500 interfaces

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Geoo posted on Tue, Jun 30 2009 1:40 PM
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A while back I set up netflowr on our Cisco 4500 and did not realize, until today when I really needed it for a problem, that there is no data being collected on the interfaces.  I wasn't able to get any traffic information at all on the interfaces that we were having difficulties with.

I have not been able to find commands that would make that information available.  Anyone else had this problem?

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Answered (Verified) kweise replied on Thu, Jul 9 2009 1:55 PM
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Geoo,

Depending on your version of IOS, you might only get layer 3 data from NetFlow.  The layer 2 support didn't show up until 12.3(14)T.

Hope this helps.

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mcbridea replied on Tue, Jun 30 2009 1:44 PM
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I believe that the 4500 needs a NetFlow card installed -  WS-4531

Andy McBride, Technology Support Specialist - SolarWinds

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dpeeples replied on Thu, Jul 9 2009 1:04 PM
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We have two 4500's and you definately have to have a netflow services card installed to gather netflow data.

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Geoo replied on Thu, Jul 9 2009 1:14 PM
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Thanks for the responses.  We do have the netflow cards and we are getting netflow data, just not on the interfaces.  We only get netflow data from the VLANs.  Is that normal?

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Answered (Verified) kweise replied on Thu, Jul 9 2009 1:55 PM
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Verified by Geoo

Geoo,

Depending on your version of IOS, you might only get layer 3 data from NetFlow.  The layer 2 support didn't show up until 12.3(14)T.

Hope this helps.

  • | Post Points: 21
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