North-South: istio-system ingress gateway → gateway pod in the workload namespace (this is the only N/S path).
East-West (intra-namespace): gateway → EPP → vLLM; and in PD-disaggregation scenarios, D → P (all within the same namespace).
East-West (cross-namespace):
pods in the workload namespace (gateway / EPP) → default/BBR:9004.
pods like prometheus, keda-kaito-scaler, metrics-server in other namespace -> pods in the workload namespace.
North-South: istio-system ingress gateway → gateway pod in the workload namespace (this is the only N/S path).
East-West (intra-namespace): gateway → EPP → vLLM; and in PD-disaggregation scenarios, D → P (all within the same namespace).
East-West (cross-namespace):
pods in the workload namespace (gateway / EPP) → default/BBR:9004.
pods like prometheus, keda-kaito-scaler, metrics-server in other namespace -> pods in the workload namespace.