From: Chris Lewis (chrlewiscsco@gmail.com)
Date: Fri Mar 03 2006 - 10:37:27 GMT-3
What I mean is using the shape command in a policy-map, rather than using
parameters in a mpa-class and enabling frame relay traffic shaping on an
interface. These two methods of enabling shaping use different code,
implemented with different algorithms to perform shaping.
On 3/2/06, imam@intikom.co.id <imam@intikom.co.id> wrote:
>
>
> Hi lewis
> what do you mean MQC Shaping ? becuase MQC base frame-relay traffic
> shaping already available also in 12.2 ... is this you mean
>
>
>
http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide
09186a0080110bc6.html
>
>
> rgds
> Imam R
>
>
> *"Chris Lewis" <chrlewiscsco@gmail.com>*
> Sent by: nobody@groupstudy.com
>
> 02/28/2006 08:19 AM
> Please respond to "Chris Lewis"
>
> To: sameer.azam@gmail.com
> cc: ccielab@groupstudy.com
>
> Subject: Re: QoS / CBWFQ Question
>
>
>
>
> Think about it like this.
>
> Bandwidth allocation only happens when there is congestion. On a physical
> interface, you know you will get congestion if you send more data that the
> interface speed. However, how will you get congestion on a sub-interface?
> What defines what level of traffic on a sub interface will generate
> congestion? If you do nothing to put a limit on the amount of traffic a
> sub
> interface can transmit at, the router does not know when there is too much
> traffic and therefore does not know when to start building queues, the
> first
> necessary step in allocating bandwidth.
>
> So knowinbg you need to limit the amount of traffic for the sub interface,
> there are two options, policing and shaping. Policing will not help you,
> as
> no queues are built, traffic is dropped. So you need to shape the traffic
> to
> a rate (which can be a percentrage rate)
>
> Once you have a shaped policy on a sub interface, you can nest a child
> policy to allocate bandwidth, as the parent is providing the upper limit.
> You do not need to use frame relay traffic shaping to do this, you can use
> can use MQC shaping.
>
> Chris
>
> On 2/27/06, sameer.azam@gmail.com <sameer.azam@gmail.com> wrote:
> >
> > Hi,
> > With the following information given only; how would you divide the
> > bandwith on the subinterface basis.
> > Second the interface is Frame-Relay interface, so is it necessary to
> > enable the Frame Relay Traffic Shapping or we can simply use the CBWFQ
> like
> > we use on any serial inteface?
> >
> >
> > Question:
> > R1 Serial interface has two sub-interface.
> > Apply QoS to corresponding sub-interfaces.
> > Apply QoS according to the following info.
> > Subinterface ip address and bandwidth to be allocated are as follows:
> > A. 0/0.1 : 192.168.1.0/24 bandwidth 10%
> > B. 0/0.1 : 192.168.1.0/24 bandwidth 20%
> > C.Critical Voice traffic bandwidth 50%
> >
> > Regards
> >
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