The figure on the right shows a classical redundant architecture. There are two signal paths from each switch to the correlating switches. In case line 1 between L1 and S1 fails, the data transmission is ensured via line 2. Currently, this type of redundant signal paths is considered the standard in data center architecture. However, it implies avoidable inefficiency in signal paths and transceivers.
Redundancy-optimized networks (ReDop) developed by FiberCon constitute a considerable MDA optimization in 40/100G networks. Savings potential of at least 25% can, thus, be realized.
Lines 1 to 6 symbolize 8-channel trunk cables. Using the transceiver split mode, 4 channels of every cable are assigned to S1 and 4 channels to S2. In the case of a QSFP28 that means 50G data transmission to each of the two spines. Hence, lines 1 and 2 are required in order to realize 100G.
|n (Spines)||M (Leafs)||QSFP (old)||QSFP (new)||Reduction|
|2||4||32||24||8 (25 %)|
|2||6||48||36||12 (25 %)|
|3||6||72||48||24 (33,3 %)|
|4||6||96||60||36 (37,5 %)|
|8||10||320||200||120 (37,5 %)|