[Ntop] ntop for finding bottleneck between two VLANs? (10 servers <--> 100 workstations)

[Gary Gatten]

Easy fix is to remove Macola right?  Actually, problem may have been
there all along and this just brought it to the surface - OR may be 100%
cause of problem.

Check switch CPU and port stats first - make sure all is well, no
errors, high load, etc.  Make sure you're truly routing at L3 and
there's not some sort of STP issue.  All the typically stuff:
speed/duplex, packet loss, retransmissions, etc.

nTop is cool and you should implement it, but this problem could be
solved or at least partially solved without it.

-----Original Message-----
From: ntop-bounces at unipi.it [mailto:ntop-bounces at unipi.it] On Behalf Of
Rogelio
Sent: Tuesday, June 09, 2009 10:00 AM
To: ntop at unipi.it
Subject: [Ntop] ntop for finding bottleneck between two VLANs? (10
servers <--> 100 workstations)

I've got a problem, and I'm wondering if ntop is the right answer (or, 
at least, an answer)

I've got a Dell 6224 layer 3 switch, and on one VLAN is about 10 
servers, and another VLAN is about 100 workstations.  All was going well

until an ERP program called Macola got dropped in, and now things have 
got down the crapper (slow logging in NT domain, etc).

Might an ntop box (or multiple ntop boxes, one on each VLAN do the 
trick?) be a solution? I've only used ntop *on* a BSD/Linux gateway, 
never off to the side or on different collision domains, and multiple 
boxes is the answer, then general type of config should I do?

(I don't expect you to do my work for me, just give me a nudge in the 
right direction)

Thanks in advance.  Any help you might give would be greatly
appreciated.
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