QOS: Bc versus Packet length.

> Dears,
>
> If we have a link with 128 Kbps speed, for a particular class we shape it
> to CIR=64 Kbps, Tc= 125 msec --> Bc= 64000x125/1000= 8000 bit = 1000 byte.
>
> Given that, at the Bust period for this class:
>
> 1- What will happen to a Packet from this class with 1500 byte length ??
> the Bc is only 1000 byte !!!. this packet requires more 500 bytes bits over
> the Bc !
>
> 2- What will happen to the third Packet of three consequent packets from
> that class with 400 byte per each packet. The summation of the first two
> packets is 800 bytes
> still can be transmitted within the Bc (1000 byte), but the third
> packets requires 200 bytes over the Bc !
>
> In those cases, Packets will be queued or transmitted, or fragmented ?
>
> Regards,
> Amr Ahmed

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Received on Thu Aug 13 2009 - 11:09:22 ART