Enabling Netflow

[jagsrao]

Hi,

We have a router (1700). I was trying to enable netflow for this. I tried reading ALL the possible documents that CISCO had provided on the web. But was not able to even see the option "flow". The IOS is 12.2 ANy help in this regard is appreciable.
Thanks in advance

Jagdish

 

[mainstreetexpress]

Google is your friend

http://manageengine.adventnet.com/products/netflow/help/cisco-netflow/cisco-ios-netflow.html

Incidentally when you configure netfow, the commands start with ip flow-xxx etc i.e.

ip flow-export source Loopback0
ip flow-export version 5 peer-as
ip flow-export destination ip.add.of.collector

Hope this helps

 

[lerdalt]

on the interface you also have to configure "ip route-cache flow".

The flow-export commands only send the data to a netflow collector and reporter system.

From the router itself you can do a "show ip cache flow" and this will show some of the statistics.

I like to enable the top talkers as well:
ip flow-top-talkers
sort-by bytes
top 10

then you can do a "show ip flow top" and it will show you the top ten conversations sorted by bytes.