Re: FRTS Question - IEWB Lab8 Task7.1

good answer, thnks

On Thu, Apr 15, 2010 at 5:59 PM, Muzammil Malick <malickmuz_at_gmail.com> wrote:
> Hi
> The solution is correct, I think you are thinking about this the wrong way.
> To calculate the Be that can burst to port speed you need to work out the
> difference between the Bc of the AIR (Port Speed) = 2250000
> and the Bc of the CIR (15000000) = 750000
> Be = 2250000-750000= 1500000
> In response to your second point as far as I can see it would not be a
> problem but people more experienced than me
> might be able to clarify.
>
> On 15 April 2010 14:33, sp-ie m <sp.ccie.me_at_gmail.com> wrote:
>>
>> Hi Guys i have a question related to Traffic shaping -
>>
>> The task asks this -
>> Configure Frame Relay Traffic Shaping
>> - port speed of 45Mbps.
>> - DLCI 101 has a provisioned rate of 15Mbps.
>> - In the case that R6 has accumulated credit it should be allowed to
>> burst up to its port speed.
>> - Use an interval of 50ms.
>> - Do not use the frame-relay traffic-shaping command to accomplish this.
>>
>> Solution as per the solution guide -
>>
>> policy-map FRTS
>> class class-default
>> shape average 15000000 750000 1500000
>> !
>> interface Serial0/0/0
>> bandwidth 45000
>> frame-relay interface-dlci 101
>> service-policy output FRTS
>>
>>
>> My question -
>>
>> question1) shoudn't the excess burst be calculated based on port speed
>> of 45Mbps with Tc=50ms which gives Be=2250000 (45000000*50/1000)
>> So instead of Be=1500000 which is equates to a burst speed of 30Mbps,
>> Be should be 2250000 which yields 45Mbps.
>>
>> question2) What if instead of using class-default, a class with "match
>> fr-dlci 101" be used and applied globally on the interface? this way -
>>
>> class CLASS_DLC101
>> match fr-dlci 101
>>
>> policy-map FRTS
>> class CLASS_DLC101
>> shape average 15000000 750000 2250000
>> !
>> interface Serial0/0/0
>> bandwidth 45000
>> service-policy output FRTS
>>
>> Any thoughts ?
>>
>>
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Received on Fri Apr 16 2010 - 10:11:34 ART