Re: netflow

Disregard previous I got it working, I hadn't set up a collector element on
the ns3 node.

On Tue, Jan 24, 2012 at 12:25 PM, Anthony Dempsey <[email protected]
> wrote:

> I've done a bit more work on this and realised I hadn't encapsulated the
> netflow data in any packet type, I've now encapsulated it in UDP/IP
> headers. So my netflow now looks like:
>
> Idle -> NetflowExport(af0, VERSION 10, INTERVAL 1)
>     -> UDPIPEncap($myaddr3, 4739, 172.16.3.2, 4739)
>     -> CheckIPHeader2(INTERFACES 172.16.1.2/255.255.255.0
> 172.16.2.1/255.255.255.0 172.16.3.1/255.255.255.0)
>     -> rt;
>
> I'm still having problems when I try to send to a node in my simulation.
> The packets are ok, I've encapsulated them in ethernet headers and dropped
> them to a pcap file and they look fine and I can use IPEncp(4, ....) giving
> two IP headers and the simulation wont stop but does give me this warning:
>
> expensive Packet::push; have 8 wanted 14
>
> but I don't want to have IP in IP. I'm adding some FEC to IPFIX so I need
> to be able to encode, transfer, and decode the packets before they are
> passed to NS-3. If I don't use a click config file on node 3 I can get the
> simulation to complete but I need to access the packets before they are
> passed to NS-3. I can print the packets before they are passed to [0]output
> in the click files but the simulation crashes after that.
>
> Can anyone help me?
> Cheers,
> Anthony
>
> On Sat, Jan 21, 2012 at 4:43 PM, Anthony Dempsey <
> [email protected]> wrote:
>
>> Can anyone point me to something that will help me set up the netflow
>> components correctly?
>> I'm trying to set up a simple simulation using ns3 of 4 nodes. n1 sends
>> to n2, the router should log details in the IPFIX format and export them
>> out to n3.
>>               n3
>>                |
>> n1--------router---------n2
>>
>> I have no idea if I'm setting the system up properly and no idea how to
>> get netflow components to send the information correctly.
>> I've taken the example ip routing config file in NS3 and modified it to
>> bring in the third node and I have an AggregateIPFlow component sitting
>> between the CheckIPHeader2 and the StaticIPLookup componenets
>>
>> ch2 :: CheckIPHeader2(...)
>>  -> af0::AggregateIPFlows()
>>  -> rt :: StaticIPLookup(....)
>>
>> For the netflow components I have the following set up
>>
>> Idle -> NetflowExport(af0, VERSION 10, INTERVAL 1)
>>     -> NetflowPrint(RECORDS true, VERBOSE true, OUTFILE netflow)
>>     -> rt;
>>
>> And this produces nothing for me, if I change VERSION to 9 I get some
>> output in the netflow file but nothing interesting.
>> Can someone see what I've missed or show me where I can learn more about
>> how to set up netflow components and have them send packets from the router
>> to n3 while the simulation runs?
>>
>> Cheers,
>> Anthony
>>
>
>