Modern data centre fabrics are built on a small number of reach classes. Getting the split right — SR for in-row, DR/FR for in-hall, LR for inter-building — determines both cost and headroom.
お客様が運用するネットワークのために
Match reach class to physical layout before choosing speed
Confirm fibre type: OM3/OM4 multimode for SR, SMF for DR/FR/LR
Budget 3 dB for connectors and splices on each link
Plan breakout cables to match topology without new switches
