[c-nsp] Netflow architecture

[Joe Shen]

> Egress NetFlow is not supported on Ca6k or 7600
> except the recent
> addition of multicast egress NetFlow in 12.2(18)SXF.

I used "both" option in PFC to collect both ingress
and egress traffic information. So, egress information
is calculated. 

According to our situation, two of line card on 12014
could be enabled  to  "both" and others could not be .


Joe


> 
> 
> > -----Original Message-----
> > From: Hank Nussbacher
> [mailto:hank at efes.iucc.ac.il]
> > Sent: Saturday, April 01, 2006 10:21 PM
> > To: Tom Zingale (tomz); Kanagaraj Krishna;
> cisco-nsp at puck.nether.net
> > Subject: Re: [c-nsp] Netflow architecture
> > 
> > At 12:56 PM 01-04-06 -0800, Tom Zingale \(tomz\)
> wrote:
> > >Historically NetFlow captures ingress
> uni-directional traffic. There
> are
> > >recent NetFlow features which capture output or
> egress information on
> > >some platforms. Egress NetFlow is offered on most
> software platforms
> and
> > >some platforms with hardware implementations.
> > >
> > >The following links are for the egress or output
> features available:
> > >Egress NetFlow Accounting:
> >
>
>http://www.cisco.com/en/US/products/ps6350/products_configuration_guide
> _
> > >chapter09186a00805e395a.html
> > 
> > That links still leaves 12.2SX unclear.  It states
> as a note:
> > "In Cisco IOS 12.2S releases, egress NetFlow
> captures either IPv4 or
> MPLS
> > packets as they leave the router." Yet near the
> bottom the table shows
> > egress Netflow only on 12.3(11)T.
> > 
> > Also, in 12.2SX, I am unable to find egress
> Netflow.  Seems a bit
> strange
> > that the focus of Cisco with its modular IOS in
> 12.2SXF would leave
> such a
> > crucial function to other IOS trains.
> > 
> > -Hank
> > 
> > 
> > >Multicast Egress NetFlow
> >
>
>http://www.cisco.com/en/US/products/sw/iosswrel/ps5187/products_feature
> _
> > >guide09186a00805256cb.html
> > >
> > >MPLS Egress NetFlow
> >
>
>http://www.cisco.com/en/US/products/ps6350/products_configuration_guide
> _
> > >chapter09186a00805e1253.html
> > >
> > >C12000 output NetFlow
> >
>
>http://www.cisco.com/en/US/products/ps6601/products_white_paper09186a00
> 8
> > >018883a.shtml
> > >
> > >
> > >
> > > > -----Original Message-----
> > > > From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-
> > > > bounces at puck.nether.net] On Behalf Of
> Kanagaraj Krishna
> > > > Sent: Saturday, April 01, 2006 9:47 AM
> > > > To: cisco-nsp at puck.nether.net
> > > > Subject: Re: [c-nsp] Netflow architecture
> > > >
> > > > Hi,
> > > >    Currently we are using NTOP as a Netflow
> collector and our
> > >objective is
> > > > to
> > > > study our traffic pattern. Just curious
> whether Netflow
> information
> > >only
> > > > represents traffic leaving an interface
> (outgoing) OR does it
> cater to
> > > > vice
> > > > versa as well (incoming and outgoing)? The
> reason for my doubts is
> > >that
> > > > from
> > > > the sample that were collected, it can be seen
> that more traffic
> were
> > > > recorded
> > > > on external destination IP/AS. My observation
> could be wrong, if
> yes
> > > > please
> > > > enlighten me. Thanks.
> > > >
> > > > Regards,
> > > > Kana
> > > >
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