[802.3_EPOC] MMP implementation issues: Multiple FCUs and MMP, is it different?
Jorge, Duane, and all,
I started a new thread since I wasn't quite sure where to insert my reply. Let me start with the drawing with multiple FCUs question that you proposed.
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The assumption with multiple FCUs is that you are shaping 3 pipes (A, B, & C) inside the 10G EPON downstream. If you make that sum of those 3 less than the maximum rate, you can send them down the PON at the same with a single packet of jitter. The total bandwidth of the downstream is a constant since it is the sum of the 3 constants.
For Multiple sub-pipes: Total BW = A + B + C (Sum of 3 Constants)
In the case of MMP, you have a single pipe with a changing data rate based on the destination. The data rate from the OLT is not a constant or the sum of 3 pipes. It is going up and down based on the destination. A single shaping bucket is used but the debit for the reverse leaky bucket is different based on destination. The total bandwidth equation is an OR.
For MMP: Total BW = A | B | C. (The total bandwidth or maximum bandwidth is based on the traffic)
I hope that helps. I will send a separate email on the other issues related to the MAC layer solution.
Thanks,
Ed...
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Edward Boyd | Sr Technical Director
Broadcom Corporation | (O) 707-792-9008 | (M) 707-478-1146
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