Is the diffServ preemptive ?

Hello all,

I have basic question about diffServ architecture.
As far as I know, AF flow may use the excess bandwidth when there is underload, end the minimum bandwidth should be guaranteed even though
the link state is overloaded.

Is that correct ?

If it is correct, when the higher priority flow enters into network, the excee bandwidth that the lower priority flow used may be preempted by the higher priority.
Even in this case, the higher priority flow can not use the bandwidth that the lower priority flow required minimally.

Is that correct ?

Thanks in advance,

Geunhyung 

None of us is as smart as all of us
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Geunhyung Kim

E-mail: [email protected]

Tel: +82-54-279-5655
Fax: +82-54-279-5699

Networking & Distributed Systems Lab.
CSE
POSTECH
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