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Traffic Management for the Available Bit Rate (ABR) Service in ...

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C.3 Pseudocode <strong>for</strong> VS/VD Design Options<br />

The pseudo code describes <strong>the</strong> comb<strong>in</strong>ation of <strong>the</strong> follow<strong>in</strong>g options:<br />

a) VC's rate from FRM1<br />

b) VC's rate from FRM2<br />

c) VC's rate from measured VC's source rate to per class queues.<br />

A) Measure <strong>in</strong>put rate at entry to per VC queues<br />

B) Measure <strong>in</strong>put rate at entry to per class queues<br />

I) Allocated rate update at FRM turnaround only. L<strong>in</strong>k congestion a ects previous<br />

loop only.<br />

II) Allocated rate update at BRM receive only. L<strong>in</strong>k congestion a ects previous loop<br />

and next loop.<br />

III) Allocated rate update at FRM turnaround and BRM receive.L<strong>in</strong>k congestion<br />

a ects previous loop and next loop.<br />

Observe that <strong>the</strong> only acceptable comb<strong>in</strong>ations are:<br />

a), A), I)<br />

a), A), II)<br />

a), A), III)<br />

c), B), I)<br />

414

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