Model breakout cables, fiber trunks, and polarity shuffles natively in NetBox 4.5 with Cable Profiles for per-lane path tracing across complex cabling topologies.

NetBox Labs

NetBox 4.5 introduces Cable Profiles, a new optional feature that models the internal channel structure of multi-channel cables such as breakout fanouts, MPO trunks, and polarity shuffle assemblies. Previously, NetBox treated cables as single opaque links; now it can trace specific lanes or fiber pairs through complex cabling topologies. Built-in profiles cover single, trunk, breakout, and shuffle cable types. When a profile is assigned, path tracing becomes per-lane aware, following exact connector and position mappings through each hop. The feature integrates with a new Advanced Port Mappings model for FrontPorts, enabling full end-to-end tracing fidelity through patch panels and inline devices. Cable Profiles are fully backward-compatible and exposed via REST and GraphQL APIs.

Understanding Cable Profiles in NetBox 4.5