Native vs Breakout Connectivity

Decide whether one port carries one link or divides into multiple lower-speed endpoints.

Overview

Breakout connectivity maps the electrical and optical lanes of a higher-speed port into multiple endpoints. The port mode, lane count, cable or optical topology and remote interfaces must agree.

Key planning checks

Confirm that the host supports the requested breakout mode.
Document the parent port rate and every child endpoint rate.
Preserve topology in DAC and AOC descriptions and lengths.
Match MPO fiber count, polarity and harness arrangement for parallel optics.

NRCube review note

Keep the unknowns visible

A cable that physically connects is not necessarily a supported breakout. Validate both hosts and the configured port mode.