Nuno On Oct 13, 2008, at 3:48 PM, Nuno Ferreira wrote: > Hi Luca, > > Can allow me to ask a few questions that are not completely clear to > me > from this announcement and from website: > > - With this nprobe version and latest ntop I can get VoIP quality call > metrics (jitter, delay, ...) yes. however as i have already told somebody a while ago, I'm working towards a more user-friendly extension to PF_RING that allows you to do the same, without the need to have netflow in the middle (that's a problem IMHO)
> > > - If this nprobe version has the ability of acting as both agent and > collector, what processing does the nprobe collector entail (what > formats does it show/stores collected information)... assuming they > must > be in more intelligible format than the flows. the probe can store flows on a DB (MySQL), text files or sqlite. Note that's a generic flow collector, so it is able to collect flows coming from non-nprobe probes > > > - With this nprobe version I do not even need ntop to get VoIP quality > call metrics? (Guess this depends on previous answer) you can read the metrics on the DB written by nprobe. However as I have said netflow is a problem because: - flow usually last shorter than phone calls - you need to merge flows together (the probe generates a flow every X sec. according to the max flow lifetime) - you need to "mediate" flows. For instance you need to correlate SIP and RTP flows belonging to the same call. So in principle you can do that with nprobe, in practice netFlow addes complexity to the whole process. Regards Luca > > > Thanks in advance, > Nuno > > > > On Sun, 2008-10-12 at 21:39 +0200, Luca Deri wrote: >> Dear all, >> this is to announce the immediate availability of nProbe v5, a major >> release enhancement: >> - New nProbe architecture for better performance with respect to >> previous versions. >> - Major bug fixes >> - Enhanced IPFIX support >> - Ability to natively save flows into MySQL and SQLite, as well as >> text and binary. >> - Native PF_RING support for high speed flow generation >> - Support of acceleration cards such as Endace, Mutina Technology, >> and >> Tilera. >> - Ability to act as flow collector and proxy >> - Support of detect protocols via DPI and report protocol name in >> flows >> - Ability to forge NetFlow interfaceIds based on MAC/IP addresses. >> - Support of both flow and packet sampling >> - Support of > >> major platforms including Linux, OSX, Windows, FreeBSD, >> Open/Solaris >> >> Further information can be found at http://www.ntop.org/nProbe.html >> >> Enjoy, Luca >> >> ---- >> Luca Deri <[EMAIL PROTECTED]> >> >> You must be the change you want to see in the world >> Mahatma Gandhi >> >> >> >> _______________________________________________ >> Ntop mailing list >> [email protected] >> http://listgateway.unipi.it/mailman/listinfo/ntop > -- > The society which scorns excellence in plumbing because plumbing is a > humble activity, and tolerates shoddiness in philosophy because > philosophy is an exalted activity, will have neither good plumbing nor > good philosophy. Neither its pipes nor its theories will hold water. > John Gardner > > > _______________________________________________ > Ntop mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop _______________________________________________ Ntop mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop
