Network bandwidth demands continue to increase rapidly, driving the development of flexible multi‑rate products for next‑generation high‑speed Ethernet. Service providers and hyperscale data centers are adopting multi‑rate infrastructures to meet this growth, creating a need for higher‑density test solutions. The VIAVI A1 400G Appliance addresses these requirements with an industry‑leading density advantage for QSFP‑DD, offering a 2U rack‑mount platform that supports per‑port PAM4 rates of 400/200/100/50G and NRZ rates of 200/100G. This flexibility enables efficient validation of advanced routers and data center fabrics designed for evolving multi‑rate environments.

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