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800G breakout configuration diagram showing how a single 800G OSFP port splits into multiple connections: 1x800G native, 2x400G, 4x200G, and 8x100G breakout modes with fiber optic cables in a data center environment

2×DR4

800G Breakout Configuration Guide: How to Split One Port Into Many

Mar 9, 2026 Rajesh Shekhawat

Learn how to split a single 800G OSFP port into multiple connections using breakout configurations. This comprehensive guide covers all four breakout modes (1×800G, 2×400G, 4×200G, 8×100G), lane-to-connector mapping, the 2×DR4 advantage, practical cabling considerations, and deployment scenarios for spine migration, greenfield builds, and converged fabrics.