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Monitoring Cisco 2811

biscuitboy

I have Network Performance Monitor installed and the traffic analyzer and it can see our Cisco's okay but not sure if picking up all information. When I logged into the Cisco I noticed an option on the interface application service :


Enable Netflow in inbound direction
Enable Netflow in outbound direction


None of these are ticked. Should these be?


 


  • 0

     Yes, they should both be ticked. You also need to set a destination for the NetFlow traffic - but I can't see anywhere in SDM to set that - you'll need to do it via the cli.

     Telnet into the router, and go to the enable screen. then do:

     

    conf term

    ip flow-export source <source interface>
    ip flow-export version 5
    ip flow-export destination <net flow analayser ip> 2055

    eg: From one of my 2811's:

    ip flow-export source FastEthernet0/0
    ip flow-export version 5
    ip flow-export destination 10.1.2.21 2055

    H.

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