From: Ayman Hamza (ayhamza@cisco.com)
Date: Wed Oct 30 2002 - 06:29:30 GMT-3
Hi Deepesh;
The ""exact"" wording of the question is:
> > > > All the voice traffic through frame relay interface of R6 - R6 is
> > > > the hub router - should guarantee a bandwidth of 40kb/s . Each
> > > > voice session
> > > > should have 20kb/s .
This means :
When there is any voice traffic, 40kb/s must be allocated immediately
to the voice traffic on the DLCI it carries the voice, and each voice session
should be allocated 20kb/s once a voice traffic is there . (Which measn clearly
even if there is no congestion on the outbount frame relay interface .
I hope I have clarified the whole question
Regards;
Ayman
> From deepesh@cisco.com Wed Oct 30 00:39:52 2002
> From: "Deepesh Chouhan" <deepesh@cisco.com>
> To: "Ayman Hamza" <ayhamza@cisco.com>
> Subject: RE: CCIE LAB VOICE question, How to reserve bandwidht for voice sessions!!
> Date: Tue, 29 Oct 2002 15:38:14 -0800
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>
> Hi
>
> Sorry, I didn't get the question earlier
> What the question says is to have
>
> 1.
> PQ for all voice traffic = 40 K
> AND
> Each voice session = 20 K
>
> OR it means
>
> 2.
> PQ for all voice traffic = 40 K
> AND
> Each voice session <= 20 K
>
> Can you verify that ?
>
> Your solution won't work here
> Reason is that bandwidth specified in ip rtp priority cmd is meant for all
> calls.
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120
> t/120t7/friprtp.htm
> (look for maximum total bandwidth string)
>
> Also frame-relay voice bandwidth command is useless, when used with ip rtp
> priority as ip rtp command, takes precedence over any other configuration
>
> Let me know the specifics of questions ...
>
> On a side note, if this is in exam, can we ask proctor to clarify this ? Are
> they aware of all questions ?
>
> thanks
> Deepesh
>
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > Ayman Hamza
> > Sent: Tuesday, October 29, 2002 2:01 PM
> > To: deepesh@cisco.com
> > Cc: ccielab@groupstudy.com
> > Subject: RE: CCIE LAB VOICE question, How to reserve bandwidht for voice
> > sessions!!
> >
> >
> > Hi Deepesh;
> >
> > Thanks for your reply. But I don't see how you are allocating (reserve)
> > 20kb/s for each session!! CBWFQ/LLQ won't help in this, right? PLS advise!
> >
> > Ayman
> >
> > > From nobody@groupstudy.com Tue Oct 29 03:14:10 2002
> > > From: "Deepesh Chouhan" <deepesh@cisco.com>
> > > To: "Ayman Hamza" <ayhamza@cisco.com>, <ccielab@groupstudy.com>,
> > > <ayman_hamza@hotmail.com>
> > > Subject: RE: CCIE LAB VOICE question, How to reserve bandwidht for voice
> > > sessions!!
> > > Date: Mon, 28 Oct 2002 17:49:05 -0800
> > > MIME-Version: 1.0
> > > Content-Transfer-Encoding: 7bit
> > > X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0)
> > > X-ASK-Info: Confirmed by user
> > > Sender: nobody@groupstudy.com
> > > Reply-To: "Deepesh Chouhan" <deepesh@cisco.com>
> > >
> > > Hi
> > >
> > > Cisco has fixed the problem. You should be getting emails on your cisco
> > > account now.
> > >
> > > Regd. your question -
> > >
> > > Why not use shaping ?
> > > If I remember correctly from DQOS (deploying QOS on enterprise
> > n/w) class,
> > >
> > > - ingress side set ip prec 5 for all voice traffic
> > > (on dial peer voip - set ip prec 5)
> > > - egress side define
> > > class-map c1
> > > match ip prec 5
> > > policy-map p1
> > > class c1
> > > shape 40
> > >
> > > Shaping will take place even when there is no congestion
> > >
> > > thanks
> > > deepesh
> > >
> > >
> > > > -----Original Message-----
> > > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > > > Ayman Hamza
> > > > Sent: Monday, October 28, 2002 5:16 PM
> > > > To: ccielab@groupstudy.com; ayman_hamza@hotmail.com
> > > > Cc: ayhamza@cisco.com
> > > > Subject: CCIE LAB VOICE question, How to reserve bandwidht for voice
> > > > sessions!!
> > > >
> > > >
> > > > Hi Team;
> > > >
> > > > *** PLS reply to me via my hotmail address: ayman_hamza@hotmail.com ,
> > > > as our cisco mail server has a problem for receiving mails from
> > > > ccielab@groupstudy.com ****
> > > >
> > > >
> > > > You have hub router - terminating two DLCIs under its
> > subinterface -. One
> > > > of these DLCIs are connected to another router that have Tel sets
> > > > connected
> > > > to it - the other spoke doesn't have any tel. sets - . So one
> > > > DLCI will carry the voice traffic.
> > > >
> > > > The wording of the question is :
> > > >
> > > > All the voice traffic through frame relay interface of R6 - R6 is
> > > > the hub router - should guarantee a bandwidth of 40kb/s . Each
> > > > voice session
> > > > should have 20kb/s .
> > > >
> > > > Hint: the command " ip rsvp .." is not enabled - or configurable -
> > > > with teh IOS image used .
> > > >
> > > > My asnwer, and PLS correct me if I'm wrong :
> > > >
> > > > !
> > > > interface serial 0/0
> > > > frame-relay traffic-shapping
> > > > !
> > > > interface Serial0/0.1 multipoint
> > > > frame-relay interface-dlci 406
> > > > class ccie
> > > > !
> > > > map-class frame-relay ccie
> > > > frame-relay voice bandwidth 40
> > > > frame relay ip rtp priority 16384 16383 20
> > > > !
> > > >
> > > >
> > > > I don't think LLQ is a solution as LLQ takes affect only when there is
> > > > a congestion. Ofcourse CBWFQ is not a solution because it's not
> > > > giving any prioritization for any specific traffic like LLQ
> > which places
> > > > a specific traffic in Priority queue.
> > > >
> > > > PLS advice!
> > > >
> > > > Regards;
> > > > Ayman
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