Architects ask whether enabling IP fabric CoS for RoCE means application and stack retry logic can be removed. What is the correct stance?
Select an answer to reveal the explanation.
Short Explanation
Nice roads help the delivery truck, but the driver still has to know the route. Fabric CoS backs RoCE performance—it does not let you delete stack settings and hope pause frames do all the thinking.
Full Explanation
Network CoS (PFC, ECN, scheduling) is necessary support for RDMA/RoCE in many fabrics, yet endpoints still need correct MTU, markings, congestion control, and application configuration. CoS does not permanently guarantee zero loss or obsolete NIC/stack tuning. Disabling CoS entirely or assuming pause frames replace the transport stack are both incorrect.