"The Cisco 8223, announced on Wednesday, is a 51.2 Tbps router powered by its in-house Silicon One P200 ASIC. Combined with 800 Gbps coherent optics, Cisco says the platform can support spans up to 1,000 kilometers. Connect up enough routers, and Cisco says the architecture can theoretically achieve an aggregate bandwidth of three exabits per second. That's more than enough to connect even the largest AI training clusters today."
"In fact, such a network would be able to support multi-site deployments containing several million GPUs, though as you might expect, achieving that level of bandwidth won't be cheap, requiring thousands of routers to make it all work. For customers who don't need a connection quite that fast, Cisco says the routers can support up to 13 Pbps of bandwidth using a smaller two-tiered network."
The Cisco 8223 is a 51.2 Tbps router built on the Silicon One P200 ASIC. The platform pairs with 800 Gbps coherent optics to support links spanning up to 1,000 kilometers. Multiple routers can be connected to form an architecture that can theoretically reach an aggregate bandwidth of three exabits per second, enabling multi-site deployments with several million GPUs. Achieving exabit-scale capacity requires thousands of routers and significant cost. A smaller two-tiered network design can provide up to 13 Pbps for customers with lower bandwidth needs. Major cloud providers are evaluating the chips alongside competing ASICs from Nvidia and Broadcom.
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