From: phase90 (phase90@comcast.net)
Date: Mon Jun 09 2003 - 23:00:26 GMT-3
OK well since I don't have a lab to test it I guess Cisco's documentation
is wrong again!
Jerry
----- Original Message -----
From: "Armand D" <ciscoworks2001@yahoo.com>
To: "Connie Nie" <CNie@EPLUS.com>; "'Jonathan V Hays'" <jhays@jtan.com>;
<ccielab@groupstudy.com>
Sent: Monday, June 09, 2003 4:31 PM
Subject: RE: Question on IP CEF
> I'm not sure about a golden rule....but you definitely
> don't need CEF to run CAR. I only use CEF on routers
> with high amount of IP traffic/tables.
>
> HTH,
>
> Armand
>
> http://www.cisco.com/warp/public/63/tuning.html#cisco_xpres
>
> --- Connie Nie <CNie@EPLUS.com> wrote: > I agree. I
> was in Netmaster class earlier and we
> > configured and tested CAR
> > without enabling CEF.
> >
> > Connie
> >
> >
> > -----Original Message-----
> > From: Jonathan V Hays [mailto:jhays@jtan.com]
> > Sent: Saturday, June 07, 2003 10:11 PM
> > To: ccielab@groupstudy.com
> > Subject: RE: Question on IP CEF
> >
> > Does CAR require CEF for *all* routers, or only
> > VIP-enabled routers,
> > such as the 7500 series?
> >
> >
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/
> > qos_r/qrdcmd4.htm#1037428
> >
> > The above link states:
> >
> > "CAR and DCAR can be configured on an interface or
> > subinterface.
> > However, CAR and DCAR are not supported on the Fast
> > EtherChannel,
> > tunnel, or PRI interfaces, nor on any interface that
> > does not support
> > Cisco Express Forwarding (CEF).
> >
> > CEF must be enabled on the interface before you
> > configure CAR or DCAR."
> > ---
> > I question the veracity of the above statement for
> > two reasons.
> >
> > 1. I have come across statements in older books and
> > documentation that
> > say CEF is only needed for CAR on high-end routers
> > with VIP cards.
> >
> > 2.I notice that I can enable CAR without CEF on
> > low-end routers in a lab
> > and the IOS does not complain. However, without any
> > traffic to test,
> > it's hard to tell if it's really working
> >
> > Is there anyone with real-world experience who can
> > shed some light on
> > this?
> >
> >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com
> > [mailto:nobody@groupstudy.com] On
> > > Behalf Of phase90
> > > Sent: Saturday, June 07, 2003 7:20 PM
> > > To: Shahid Shafi; 'Connie Nie';
> > ccielab@groupstudy.com
> > > Subject: Re: Question on IP CEF
> > >
> > >
> > > Committed-Access-Rate [ CAR ] needs CEF also.
> > >
> > >
> > > Jerry
> > > ----- Original Message -----
> > > From: "Shahid Shafi" <sshafi@qualcomm.com>
> > > To: "'Connie Nie'" <CNie@eplus.com>;
> > <ccielab@groupstudy.com>
> > > Sent: Saturday, June 07, 2003 5:31 PM
> > > Subject: RE: Question on IP CEF
> > >
> > >
> > > > netflow
> > > >
> > > > -----Original Message-----
> > > > From: nobody@groupstudy.com
> > > [mailto:nobody@groupstudy.com]On Behalf Of
> > > > Connie Nie
> > > >
> > > Sent: Saturday, June 07, 2003 8:10 AM
> > > > To: ccielab@groupstudy.com
> > > > Subject: RE: Question on IP CEF
> > > >
> > > >
> > > > I have been wondering about the same thing. I
> > have been
> > > noting down the
> > > > features that need CEF enabled, so far I have
> > two
> > > >
> > > > NBAR
> > > > IP Unicast RPF
> > > >
> > > > Anyone has anything else to add onto the list?
> > > >
> > > > Connie
> > > > -----Original Message-----
> > > > From: Ronald van Dommelen
> > [mailto:Ronald.v.Dommelen@Nobel.NL]
> > > > Sent: Saturday, June 07, 2003 7:33 AM
> > > > To: ccielab@groupstudy.com
> > > > Subject: Question on IP CEF
> > > >
> > > > Hi all,
> > > >
> > > > I was wondering if their is a 'golden rule' when
> > to use the 'ip cef'
> > > command
> > > > ?
> > > >
> > > > Thanks
> > > >
> > > > Ronald v Dommelen
> > > > The Netherlands
>
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