11/04/2026
AI training is turning Data Center Interconnect into a routing problem.
Power limits are pushing training clusters across sites 100+ km apart. Once a job spans sites, the DCI link becomes part of the training fabric. A few elephant flows can overload one path while others sit idle. Every extra 200 km of fiber adds a millisecond to each sync. A single fiber cut can stall thousands of GPUs.
DCI is no longer a pipe, and it can't be run like one.
Our blog: https://lnkd.in/gquzpKMd
Rishi Narain