Cisco Netflow......

timkaye · ‎07-19-2007

Hello.

I've done some digging and cannot seem to find any relevant information on Cisco Netflow, with respect to Layer3 switches.

Is it possible to obtain Netlfow data from a Layer3 Cisco switch. How about from an ASA?

Appreciate any help.

Cheers

Jan Nejman · ‎07-20-2007

Hello

NetFlow is supported on the Cisco 800, 1700, 2600, 1800, 2800, 3800, 4500, 6500, 7200, 7300, 7500, 7600, 10000, 12000, CRS-1.

Netflow is NOT supported on the: Cisco 2900, 3500, 3750.

(On Cat4000 you need a special card for netflow support).

More netflow related information you may find on the:

or

Kind regards

Jan Nejman

Caligare Co.,

94halldah · ‎07-23-2007

To get the info your looking for, you will need to enable mls flows as well as netflow.

snippet from working 6509:

mls rp nde-address x.x.x.x

mls flow ip full

mls nde sender version 5

ip flow-export source Loopback1

ip flow-export version 5 peer-as

ip flow-export destination x.x.x.x %udp port%

ip flow-aggregation cache as

export destination x.x.x.x %udp port%

enabled

You also have to enable " ip route-cache flow" for each interface that you want stats from.

~Dwann