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nprobe as proxy; IPFIX to v5 conversion loses nexthop info

 

 

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dialp at ucar

Aug 20, 2012, 12:30 PM

Post #1 of 3 (312 views)
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nprobe as proxy; IPFIX to v5 conversion loses nexthop info

Hi,

I'm running nprobe v.6.9.8 ($Revision: 2461 $) for
x86_64-unknown-linux-gnu as:

/usr/local/bin/nprobe -3 9994 -n udp://192.x.x.x:9996 -V 5 --syslog
nprobe --verbose 2 --pid-file /var/run/nprobe.pid

to convert from IPFIX exported from a Juniper MX480 running JUNOS
12.1R1.9, to netflow version 5. A tcpdump of IPFIX flow data coming
from the Juniper (before it hits nprobe) shows that the Nexthop field is
populated. Taking a tcpdump of packets exiting nprobe as netflow
version 5 packets shows that the Nexthop field is always 0.0.0.0. Am I
missing a configuration parameter??? This seems like it should directly
transfer from IPFIX to v5.

Thanks,

paul

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deri at ntop

Aug 20, 2012, 1:23 PM

Post #2 of 3 (296 views)
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Re: nprobe as proxy; IPFIX to v5 conversion loses nexthop info [In reply to]

We'll fix it Paul, please file a bug on http://bugzilla.ntop.org

Luca

On Aug 20, 2012, at 9:30 PM, paul dial <dialp [at] ucar> wrote:

> Hi,
>
> I'm running nprobe v.6.9.8 ($Revision: 2461 $) for
> x86_64-unknown-linux-gnu as:
>
> /usr/local/bin/nprobe -3 9994 -n udp://192.x.x.x:9996 -V 5 --syslog
> nprobe --verbose 2 --pid-file /var/run/nprobe.pid
>
> to convert from IPFIX exported from a Juniper MX480 running JUNOS
> 12.1R1.9, to netflow version 5. A tcpdump of IPFIX flow data coming
> from the Juniper (before it hits nprobe) shows that the Nexthop field is
> populated. Taking a tcpdump of packets exiting nprobe as netflow
> version 5 packets shows that the Nexthop field is always 0.0.0.0. Am I
> missing a configuration parameter??? This seems like it should directly
> transfer from IPFIX to v5.
>
> Thanks,
>
> paul
>
> _______________________________________________
> Ntop-misc mailing list
> Ntop-misc [at] listgateway
> http://listgateway.unipi.it/mailman/listinfo/ntop-misc

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dialp at ucar

Aug 24, 2012, 11:11 AM

Post #3 of 3 (288 views)
Permalink
Re: nprobe as proxy; IPFIX to v5 conversion loses nexthop info [In reply to]

Bug has been filed. For planning purposes, do you have an estimate as
to when this bug might be corrected? Thanks again for your help.

paul



On 8/20/2012 2:23 PM, Luca Deri wrote:
> We'll fix it Paul, please file a bug on http://bugzilla.ntop.org
>
> Luca
>
> On Aug 20, 2012, at 9:30 PM, paul dial <dialp [at] ucar> wrote:
>
>> Hi,
>>
>> I'm running nprobe v.6.9.8 ($Revision: 2461 $) for
>> x86_64-unknown-linux-gnu as:
>>
>> /usr/local/bin/nprobe -3 9994 -n udp://192.x.x.x:9996 -V 5 --syslog
>> nprobe --verbose 2 --pid-file /var/run/nprobe.pid
>>
>> to convert from IPFIX exported from a Juniper MX480 running JUNOS
>> 12.1R1.9, to netflow version 5. A tcpdump of IPFIX flow data coming
>> from the Juniper (before it hits nprobe) shows that the Nexthop field is
>> populated. Taking a tcpdump of packets exiting nprobe as netflow
>> version 5 packets shows that the Nexthop field is always 0.0.0.0. Am I
>> missing a configuration parameter??? This seems like it should directly
>> transfer from IPFIX to v5.
>>
>> Thanks,
>>
>> paul
>>
>> _______________________________________________
>> Ntop-misc mailing list
>> Ntop-misc [at] listgateway
>> http://listgateway.unipi.it/mailman/listinfo/ntop-misc
> _______________________________________________
> Ntop-misc mailing list
> Ntop-misc [at] listgateway
> http://listgateway.unipi.it/mailman/listinfo/ntop-misc

--
----
Paul Dial
Network Engineer
National Center for Atmospheric Research
303-497-1261
dialp [at] ucar

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