FW: [c-nsp] Ramdom Sampled Netflow on 7200VXRs

[Tom Zingale]

A couple of things to check:

If you have 'ip flow ingress' on the interface it will take priority over 
the sampler so you should see all flows.    If you are seeing no flows 
'show ip cache flow' then you need to check the following:


1) Is cef configured?
2) What is the running config on the interface?  Does it have anything along
the lines of 'no ip route-cache cef' on it?  If so remove it and it should
work.




> > 
> > > From: "Thomas Kernen" <thomas at ip-man.net>
> > > Date: December 14, 2004 7:15:39 AM PST
> > > To: <cisco-nsp at puck.nether.net>
> > > Subject: [c-nsp] Ramdom Sampled Netflow on 7200VXRs
> > >
> > >
> > > Question to the team,
> > >
> > > I'm trying to configure "random sampled netflow" on a 7200 (NPE-G1
> > > FYI) on GE interfaces (the built-in ones) running 12.2(25)S but it 
> > > appears that my 1 in a 100 rule is not being applied.
> > >
> > > I've configured the following in the main config:
> > >
> > > flow-sampler-map <blahblahblah>
> > >  mode random one-out-of 100
> > >
> > > On the inteface (gi0/1): I've added the following:
> > > flow-sampler peakflow-collector
> > >
> > > ip flow-export source FastEthernet3/0 ip flow-export version 5 ip 
> > > flow-export destination <ip add> 2055
> > >
> > >
> > > Output if currently full netflow export and the flow-sampler is 
> > > the
> > > following:
> > >
> > >  Sampler :<blahblahblah>, id : 1, packets matched : 0, mode
> > : random
> > > sampling mode
> > >   sampling interval is : 100
> > >
> > > So no match on the sampler.
> > >
> > > I've tried with and without "ip flow ingress", also removed all 
> > > netflow related commands and started from scratch but still
> > no success.
> > >
> > > Any suggestions where I went wrong?
> > >
> > > Cheers
> > > Thomas
> > >
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> > >
> > ---------------------------------------------------------
> > Roland Dobbins <rdobbins at cisco.com> // 408.527.6376 voice
> > 
> >                 Suspicion breeds confidence.
> > 
>