If you thought 800 Gbps Ethernet was fast, just wait. Celestica's latest switches cram 64 1.6 Tbps ports into a single chassis. The networking vendor this week began taking orders for its DS6000 family of switches, which are aimed primarily at high-performance computing applications like AI training and inference.  The switches will be offered in both a 19-inch 3U air-cooled chassis and an OCP-compliant 21-inch design that uses a combination of air and liquid cooling. At the heart of the switches lives Broadcom's 102.4 Tbps Tomahawk 6 ASIC, which we looked at in detail late last spring. The chip is Broadcom's first to use the 200 Gbps serializer-deserializers (SerDes) required for 1.6 Tbps connectivity. Each of Celestica's 64 OSFP224 ports is made up of eight 200 Gbps, links which are aggregated into a single port. These ports can also be expanded using breakout cables to boost the switch's radix if required.…