A city enables Priority Flow Control on every interface, including the Internet edge, after reading about RoCE. What scoping correction should the design review demand?
Select an answer to reveal the explanation.
Short Explanation
PFC is a local fire hose for carefully plumbed RoCE hallways—not something you spray onto the Internet porch. Scope lossless classes to the RDMA domain or you risk pause storms and weird WAN behavior.
Full Explanation
Lossless or PFC-backed classes should be confined to well-defined RDMA/RoCE domains inside the fabric where peers and buffers are designed for them. Enabling PFC on Internet or general WAN edges is inappropriate and can propagate pause behavior with harmful effects. Best-effort-only GPU ports or OOB-only PFC miss the actual RoCE data path requirements.