The core of the project was the introduction of 400GBASE-DR4-QSFP-DD single-mode transceivers with SN quad optical interfaces. These components enable high bandwidths while reducing cabling costs. The technology was supplemented by a new single-mode infrastructure that prepares for expansion to higher speeds such as 800 Gbit/s or 1.6 Tbit/s. The modernisation of all three locations, including project planning, was completed within six weeks.
Efficient architecture with Arista switches
A key element of this architecture is the integration of Arista switches, the ports of which are mirrored on LC duplex patch panels (CPL). This architecture reduces the number of connections near the switches, thereby lowering both costs and signal losses. Factory-assembled SN trunk cables featuring the latest ’SN EZ-Flip’ SN connector design were also used. These cables allow the polarity to be changed on site without the risk of breaking fibres.
Flexibly expandable patch distributor solution
A PreCONNECT SMAP-G2 SD, which occupies 2 U and features a low fire load due to its plastic-reduced design, serves as the patch distributor. The modular 19-inch housing system enables partial front panels to be removed without tools and additional ports to be retrofitted. This allows network infrastructures to be quickly adapted to new standards during subsequent technology updates without the need for complete replacement.
Investment protection and sustainability
The solution increases performance and protects existing resources. Thanks to its modular design and the option to combine fibre optic and copper cabling, it remains usable in the long term, supporting the REWE Group’s sustainability goals.
