</ul></li><li role=treeitem aria-label="Diagnostic Tools"><button aria-hidden=true></button><a title="Tools and techniques to help troubleshoot an Istio mesh." href=/v1.12/docs/ops/diagnostic-tools/>Diagnostic Tools</a><ul role=group aria-expanded=false class=leaf-section><li role=none><a role=treeitem title="Istio includes a supplemental tool that provides debugging and diagnosis for Istio service mesh deployments." href=/v1.12/docs/ops/diagnostic-tools/istioctl/>Using the Istioctl Command-line Tool</a></l