?

Ntop is on the same switch that the ghost server is on, would it be
better to place that box on my core switch?

 

TIM



 

Tim Holmes

 

IT Manager

Medina Christian Academy, Inc.

A Higher Standard...

 

Jeremiah 33:3

Jeremiah 29:11

Esther 4:14

 

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
Nick Weaver
Sent: Wednesday, October 13, 2004 10:23 AM
To: [EMAIL PROTECTED]
Subject: RE: [Ntop] Question (probably dumb) from a new user

 

You probably have NTOP on a switched network, and are missing some of
the traffic. The way I get around this is to place a hub between the
backbone/regular network, with NTOP listening there. 

 

Switched network --->Hub w/NTOP box ---> Backbone/server switches

 

or I also do it this way

 

Switched network --> Hub w/NTOP --> Router -->Remote Router ---> Hub
w/NTOP --> Remote switched network

 

 

I am sure that email will mangle my beautiful diagrams...oh well. You
should be able to get the idea. You can also use port mirroring. I have
these hubs placed like this for sniffing/analysis anyway (but this is a
test lab, not a production environment)

 

 

Nick Weaver  
Test Lead/IT Support
KeyLabs(tm) 
BottomLine Quality Managment
Building 7 System Test Lab
Ph: 208-396-7386 
Cell: 208-353-5443 

 

________________________________

From: [EMAIL PROTECTED] on behalf of Tim Holmes
Sent: Wed 10/13/2004 7:59 AM
To: [EMAIL PROTECTED]
Subject: [Ntop] Question (probably dumb) from a new user

 

Good morning.  I just started using NTOP to monitor my network this
week, and so far its going well, but I have a question. 

According to my summary screen, NTop has been running for 1 day and 20
hours and change.  So  it is showing total packets processed at just
over 207,000 I know that's a large number, but it doesn't seem like
enough for what Ive been doing on the network.  We have about 100
regular users who are logging in etc, as well as I did 2 ghost casts
yesterday, (each one over 5 gigs).  Does NTOP only sample every so
often, or is my traffic really that low? Or am I totally messed up?

Thanks

TIM

Tim?Holmes
?
IT Manager
Medina Christian Academy, Inc.
A Higher Standard...
?
Jeremiah 33:3
Jeremiah 29:11
Esther 4:14



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