How many 400GE ports can be supported by a single board on the next-generation flagship core switch CloudEngine S16700?

The Huawei CloudEngine S16700 series is a next-generation flagship core switch designed for high-density data center networks. It supports various high-speed line cards, also known as Line Processing Units (LPUs). The highest density 400GE line card available for this platform is the CEL18H2QFD-A, which provides 18 ports of 400GE connectivity using the QSFP-DD interface. This high-density board enables the construction of scalable, non-blocking network fabrics required by modern data centers and cloud computing environments.

A. 8: This port count does not match the highest density 400GE line card offered for the CloudEngine S16700 series.
C. 12: This is an incorrect port density for the flagship 400GE line cards available on the S16700 platform.
D. 16: While a common port density for other switch models or technologies, it is not the maximum 400GE port count for a single board on the S16700.

1. Huawei CloudEngine S16700 Series Data Center Switches Datasheet. In the "Hardware Specifications" section, under the "Cards" subsection, the table for "Line Processing Units (LPUs)" lists the CEL18H2QFD-A card. The description for this card is "18-port 400GE QSFP-DD optical interface card". This document is the primary official source for the hardware capabilities of the switch. (Document available on the official Huawei Enterprise support website).