RE: what to match for VOIP

From: Swan, Jay (jswan@sugf.com)
Date: Tue Sep 25 2007 - 12:31:54 ART


You could also use the MQC with NBAR:

class-map VOICE_BEARER
 match protocol rtp
class-map H323_CONTROL
 match protocol h323

policy-map DO_STUFF
 class VOICE_BEARER
 priority 200
etc.

Jay (#17783)

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
sakthi somnath
Sent: Tuesday, September 25, 2007 4:42 AM
To: shiran guez; nicky noname
Cc: Cisco certification
Subject: Re: what to match for VOIP

ip access-list 100 permit udp any any range 16384
 32767

match ip rtp would be a better choice if you want to
match only the voice payload.

--- shiran guez <shiranp3@gmail.com> wrote:

> it depands on what you want to match:
>
> ip access-list 100 permit tcp any any eq 1720 this
> will match only the H323
> TCP signaling
>
> ip access-list 100 permit udp any any range 16384
> 32767 this will match the
> RTP itself
>
> ip access-list 100 permit udp any any eq 5060 this
> will match SIP signaling
>
> Signaling is not a lot of traffic but the RTP on the
> other hand is a lot of
> traffic.
>
>
>
>
>
>
> On 9/25/07, nicky noname <cisco2study@gmail.com>
> wrote:
> >
> > Hello,
> >
> > I would appreciate you view on what satisfies the
> requirements of the
> > following question.
> >
> > VOIP traffic sent over the link between R3 and R4
> must be given
> > preferencial
> > treatment. Configure your network so that 200kbps
> of VOIP tarffic is
> > always
> > dequeued first, as it is sent over the frame-relay
> circuit.
> >
> > The only part I would like your comment on, is
> >
> > how would you interpret what you need to match:
> >
> > ip access-list 100 permit udp any any range 16384
> 32767
> >
> > or do you think you should also have
> >
> > ip access-list 100 permit tcp any any eq 1720
> >
> > The second would be the audio right?
> >
> > Thanks in advance
> > nic
> >
> >
>



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