I do use sflowtrend as well, I've also opened a ticket with extreme (the mfr of the switches). When I started using sflowtrend, every single one of the things that I could monitor reported data back, now it only reports some of the traffic. So I do believe that the issue may be the switch. However I do not even see the same amount of data that sflowtrend reports, so I believe that ntop may not be recieving or reporting the same things.
Message: 3
Date: Mon, 27 Feb 2006 13:06:39 -0800
From: Mike Hunter <[EMAIL PROTECTED]>
Subject: Re: [Ntop] ntop and sflow
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=us-ascii
On Feb 27 at 11:48, "Steve Moran" wrote:
> although ntop says that rrd is active, and that sflow is active, and
> shows valid sflow packets being captured, no data is displayed
> regarding sflow. I cannot generate any sflow graphs, if I go into
> 'describe, I see that sflow traffic is being sent, but if I click on
> the interface, I get no data back.
I submitted a write-up to an ntop wiki about my one upon a time sflow adventure. It ended up for me that the switches I was testing sflow with weren't seeing any actual traffic, but they still emitted sflow packets that were samples of internal counters. Ntop is designed to report that it received the packets but it just drops them on the floor. So, my first suggestion is to make absolutely sure that the sflow you're receiving has real traffic samples in it (perhaps by using http://www.inmon.com/products/sFlowTrend.php).
Burton, I see the wiki has been removed:
http://www.burtonstrauss.com/pmwiki/pmwiki.php?pagename=Ntop.HomePage
Sorry
Due to a lack of user contributions and on-going defacement, the ntop wiki and FAQ wiki are no longer available
I am understanding of the wiki problems, but can you recover the post that I made about this issue?
Thanks,
Mike
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