> first msg 
> I monitor a network node, with ntop 2.1.55 which is
> connected on the
> mirrorred  port. My problem is that I don't get any
> more the precious
> informations of : "usage" "sessions" and "matrix".
> When i'm an a normal port
> I get all of the informations. 


First of all you really are not providing enough
information to answer your question??  What do you
mean when you say 'I monitor a network node"??  

1) is NTOP running on the node you want to monitor or
2) is NTOP running on a seperate server connected to a
switch port which you are configuring port mirroring
to capture traffic from another port?
3) if #2 is correct then is the port you are
monitoring have a server connected to it or a router?
4) if this is a Cisco switch ?? then what model is it?

This kind of information helps.

I have a question for you, how do you get "all the
information" when you are collecting statistics on a
port that is configured for port spanning or
monitoring of another port? That statement does not
make sense to me because if you connect a server to a
switch without this then all you will get is broadcast
traffic from other devices (and of course the traffic
generated from the that server).


> Is there any
> solutions to get all of the
> informations when I sniff on a mirrorred port ?

what is the port configured to mirror? what is
connected to the source port?  If you connect NTOP to
a port which is montoring another port ... you will
get all the traffic (depending on how you configure
the port span or mirror).  If the port is not
mirrored, you will only get broadcast traffic unless
you specifically are looking for protocol stats sent
and received from the machine running NTOP.


> Thanks again for your time,
>  regards



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