Re: legacy FRTS ?

t*his router should be able to
burst up to its access rate unless congestion is experienced,*

On Wed, Oct 28, 2009 at 2:38 AM, Ivan <ivanzghr_at_gmail.com> wrote:
> OK.I know that. But in this specific task Be is 0:
>
> Interface Se0/1/0
> Access Target Byte Sustain Excess Interval Increment
Adapt
> VC List Rate Limit bits/int bits/int (ms) (bytes)
> Active
> 402 192000 3000 24000 0 125 3000
BECN
> 403 192000 3000 24000 0 125 3000
BECN
> 405 192000 3000 24000 0 125 3000
BECN
> 406 192000 3000 24000 0 125 3000
BECN
> 401 192000 3000 24000 0 125 3000
BECN
>
> Doesn't that mean that no burst above CIR is allowed?
>
> On Tue, Oct 27, 2009 at 9:56 PM, Divin Mathew John <divinjohn_at_gmail.com>
> wrote:
>>
>> Be=(AR-CIR)*Tc
>>
>> AR is the line speed . Max speed the interface is capable of.
>>
>>
>>
>> On Wed, Oct 28, 2009 at 2:09 AM, Ivan <ivanzghr_at_gmail.com> wrote:
>> > When the task asks you to configure FRTS and inputs are this:
>> > router has an access rate (CIR) 128kbps and this router should be able
>> > to
>> > burst up to its access rate unless congestion is experienced, in which
>> > case
>> > it should down its rate, but under no circumstances this router should
>> > go
>> > below 64 kbps (minCIR).
>> > The answer is:
>> >
>> > map-class frame-relay FRTS
>> > frame cir 128000
>> > frame bc 16000
>> > frame mincir 64000
>> > frame adaptive becn
>> >
>> > My question is what does "router should be able to burst up to its
>> > access
>> > rate unless congestion is experienced" mean? Shouldn't we use Be here?
>> > Cause, here in legacy FRTS if you don't specify Be its value is 0. In
>> > CB-FRTS if you don't specify Be then its value is Bc value.
>> > Another thing, IOS doesn't calculate Bc value of its own Bc=CIR/8. If
>> > you
>> > don't specify Bc it will be same as CIR. In real life scenario, what
>> > will
>> > happened if you don't specify Bc in map-class?
>> >
>> >
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>>
>>
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>>
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>
>

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