From: Ayman Hamza (ayhamza@cisco.com)
Date: Wed Oct 30 2002 - 16:33:24 GMT-3
Deepesh;
Thanks for your reply. To end this discussion , I believe that the correct
answer is :
Use ip rtp priority queueing to allocate the 40kb/s pipe. Then use
LLQ to allocate the 20kb/s sessions.
And ofcourse this solution should be configured on all the possible
outbound interfaces that leads to alternative destination voice dialer-peer.
PLS concure this if it's possible !
Regards;
Ayman
> From deepesh@cisco.com Wed Oct 30 19:48:05 2002
> From: "Deepesh Chouhan" <deepesh@cisco.com>
> To: "Ayman Hamza" <ayhamza@cisco.com>, <ccielab@groupstudy.com>
> Subject: RE: CCIE LAB VOICE question, How to reserve bandwidht for voice sessions!!
> Date: Wed, 30 Oct 2002 10:45:57 -0800
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>
> >
> > 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
>
> Thanks for the clarification. I don't know the answer for this. We are
> talking about creating a 40 K pipe and then allocating a chunk (20 K) within
> it.
> So some sort of FQ inside a PQ :)
>
> As Aansar suggested, on each router we can put LLQ, and then use RSVP to
> create 20 K per session. But rsvp is not allowed.
>
> thanks
> deepesh
>
>
>
> >
> > 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
> > > MIME-Version: 1.0
> > > Content-Transfer-Encoding: 7bit
> > > X-Priority: 3 (Normal)
> > > X-MSMail-Priority: Normal
> > > X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0)
> > > Importance: Normal
> > > X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000
> > >
> > > 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/ios120/12
> > 0newft/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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