Keep high-bandwidth transport paths stable across longer optical spans with Cisco 400G Trunk in REGEN mode. This e-delivery offering is designed for service-provider and carrier environments where regeneration is used to preserve signal quality between network segments. It fits backbone and metro architectures that need to move large volumes of traffic without compromising transport integrity. For teams planning optical builds, the 400G trunk format supports high-capacity design goals while giving architects a cleaner way to extend reach through regeneration points. That makes it a strong fit for networks where direct end-to-end transport is not practical, or where optical budgets require a regeneration stage to maintain service quality. Because this is a Cisco transport offering, it is positioned for infrastructure teams that value consistency in deployment planning and lifecycle procurement. The e-delivery model also supports faster fulfillment for projects that need to move from purchase to implementation without waiting on physical media. When the network design calls for dependable 400G transport with regeneration in the path, this SKU aligns capacity, reach strategy, and procurement efficiency.