Does NVIDIA MSN2100 support lossless network(Priority-based Flow Control & Explicit Congestion Notification)?

My goal is to build this sparkUCX environment with 3 servers. Could MSN2700 be replaced to MSN2100?

https://docs.nvidia.com/networking/pages/releaseview.action?pageId=19819236#RDG:RoCEacceleratedApacheSparkUCX2.4/3.0clusterdeployment.-SparkUCXPlugin