From: Mujeeb Sarwar (mujeebsarwar@gmail.com)
Date: Wed Dec 31 2008 - 05:03:57 ARST
Hello Everyone,
I think 3rd method is similar to 2nd method except that 2nd method will use
NBAR to match rtp traffic. I have a query regarding method 1 & 2,
As far as I know if we use ACL than it will match both odd & even ports in
the defined range ( 16384 - 32767 ) so RTCP packets could be matched.
While one the other side if we use 'match protocol rtp audio' than it will
match only even ports in the defined range so RTCP packets could not
matched.
So what should be the method if I need to match voice traffic ? should I
need to include RTCP as well ?
Kindly CORRECT me if I am wrong.
Regards,
Mujeeb
On Wed, Dec 31, 2008 at 9:12 AM, Nitro Drops <nitrodrops@hotmail.com> wrote:
> Hi All & Anthony,
>
> One more query with regards to my initial qns of matching Voice packets.
>
> How about this 3rd method
>
> 3.) class-map VOIP
> match ip rtp 16384 16383
>
> Is it the same as the previous 2 of matching Voice packets?
>
>
> 1.) ACL
> permit udp any any range 16384 32767
>
> or
>
> 2.) NBAR
> class VOIP
> match protocol rtp audio
>
>
> Happy New Year every1 8)
>
> Cheers
> Nit
>
>
>
> > CC: ccielab@groupstudy.com
> > From: asequeira@internetworkexpert.com
> > To: nitrodrops@hotmail.com
> > Subject: Re: Voice Packets
> > Date: Sat, 20 Dec 2008 00:29:22 -0500
> >
> > Yes - those two both work; also do not forget that many Voice matching
> > tasks in the lab may be wanting you to match on traffic that is
> > already marked as Voice.
> >
> > Perhaps you need to match on traffic from an IP Phone that is marked
> > as EF at Layer 3 or CoS 5 at Layer 2.
> >
> > Anthony J. Sequeira, CCIE #15626, CCSI #23251
> > Senior CCIE Instructor
> >
> > asequeira@internetworkexpert.com
> >
> > Internetwork Expert, Inc.
> > http://www.InternetworkExpert.com <http://www.internetworkexpert.com/>
> > Toll Free: 877-224-8987
> > Outside US: 775-826-4344
> >
> > On Dec 19, 2008, at 10:09 PM, Nitro Drops wrote:
> >
> > > Just to confirm, to match voice packets
> > >
> > > either
> > >
> > > 1.) ACL
> > >
> > > permit udp any any range 16384 32767
> > >
> > > or
> > >
> > > 2.) NBAR
> > >
> > > class VOIP
> > > match protocol rtp audio
> > >
> > >
> > > Thanks for any kind replies
> > >
> > > Cheers
> > > NIt
> > >
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