diff --git a/netx_api/topology_schemas.py b/netx_api/topology_schemas.py
index bf7fd51..e42f6be 100644
--- a/netx_api/topology_schemas.py
+++ b/netx_api/topology_schemas.py
@@ -291,6 +291,9 @@ class ViewNodeOut(BaseModel):
     device_type: str = ""
     connect_status: str = ""
     managed_source: str = ""  # manual | ume_sync | lldp | topology | webcrt | …
+    # Fabric classify: smaller level = closer to external/WAN; role synced from floor(level).
+    level: float | None = None
+    role: str = ""
     # ne | region — region nodes drill into child UME canvases
     kind: str = "ne"
     folder_id: str = ""
diff --git a/netx_api/topology_views_graph.py b/netx_api/topology_views_graph.py
index f59a68e..41e692d 100644
--- a/netx_api/topology_views_graph.py
+++ b/netx_api/topology_views_graph.py
@@ -197,6 +197,8 @@ def get_view_graph(db: Session, view_id: str) -> TopologyViewGraphOut:
             label = (fn.name or fn.ip or vn.fabric_node_id)[:256]
         connect_status = ""
         managed_source = ""
+        level: float | None = None
+        role = ""
         if fn is not None:
             mid = str(fn.managed_ne_id or "").strip()
             uid = str(fn.ume_ne_id or "").strip()
@@ -206,6 +208,8 @@ def get_view_graph(db: Session, view_id: str) -> TopologyViewGraphOut:
                 managed_source = str(mne.source or "").strip()
             elif uid and uid in ume_by_id:
                 connect_status = ume_by_id[uid].connection_status or ""
+            level = fn.level
+            role = str(fn.role or "").strip()
         nodes_out.append(
             ViewNodeOut(
                 fabric_node_id=vn.fabric_node_id,
@@ -221,6 +225,8 @@ def get_view_graph(db: Session, view_id: str) -> TopologyViewGraphOut:
                 device_type=(fn.device_type if fn else "") or "",
                 connect_status=connect_status,
                 managed_source=managed_source,
+                level=level,
+                role=role,
             )
         )
     # Child regions without a placement row still appear (legacy / missed create).
diff --git a/web/src/i18n/en.ts b/web/src/i18n/en.ts
index 52e1f30..0d433a8 100644
--- a/web/src/i18n/en.ts
+++ b/web/src/i18n/en.ts
@@ -1635,6 +1635,8 @@ const en = {
     removeSelected: "Remove selected ({{count}})",
     openWebcrt: "Open terminal",
     openNe: "NE details",
+    openAlarms: "View alarms",
+    noAlarmLink: "Cannot build an alarm filter for this node",
     removeNode: "Remove from canvas",
     deletePlaceholder: "Delete placeholder",
     deletePlaceholderConfirm:
@@ -1661,6 +1663,10 @@ const en = {
     createNeIpPh: "Can fill later during setup",
     createNeDone: "Created placeholder {{name}}",
     createManagedNeDone: "Created and placed {{name}}",
+    createManagedNePlaceFailed:
+      "{{name}} was created in inventory, but placing on the map failed: {{error}}. Add it again from NE management or the sidebar.",
+    createManagedNePosFailed:
+      "{{name}} is on the map, but could not move to the click position (kept default layout coords)",
     createNeBusy: "Creating…",
     connectTest: "Connectivity test",
     connectTestSelected: "Connectivity test ({{count}})",
@@ -1723,6 +1729,17 @@ const en = {
     hideIp: "Hide IP",
     hideVendor: "Hide vendor",
     showPlaceholderBadge: "Show placeholder badge (TOPO/LLDP)",
+    showConnectStatus: "Show connect-status dots",
+    showAlarmOverlay: "Show alarm overlay",
+    showLevelColors: "Color by classify level",
+    levelUnmatched: "Unclassified",
+    level: {
+      external: "External",
+      core: "Core",
+      aggregation: "Aggregation",
+      access: "Access",
+      edge: "Edge",
+    },
     hidePorts: "Hide ports",
     edgeFlow: "Edge flow",
     collapseSidebar: "Collapse sidebar",
diff --git a/web/src/i18n/zh.ts b/web/src/i18n/zh.ts
index 4631812..d1a8168 100644
--- a/web/src/i18n/zh.ts
+++ b/web/src/i18n/zh.ts
@@ -1621,6 +1621,8 @@ const zh = {
     removeSelected: "移除选中 ({{count}})",
     openWebcrt: "打开终端",
     openNe: "网元详情",
+    openAlarms: "查看告警",
+    noAlarmLink: "该节点无法定位告警过滤条件",
     removeNode: "从画布移除",
     deletePlaceholder: "删除占位网元",
     deletePlaceholderConfirm: "永久删除此占位网元（含库存记录与 Fabric 直连链路）？画布撤销无法恢复。",
@@ -1644,6 +1646,9 @@ const zh = {
     createNeIpPh: "可稍后在完善时填写",
     createNeDone: "已新建占位网元 {{name}}",
     createManagedNeDone: "已创建网元并上图 {{name}}",
+    createManagedNePlaceFailed:
+      "网元 {{name}} 已写入库存，但上图失败：{{error}}。请从网元管理或侧栏再次添加。",
+    createManagedNePosFailed: "网元 {{name}} 已上图，但未能移到点击位置（保留默认布局坐标）",
     createNeBusy: "创建中…",
     connectTest: "连通性测试",
     connectTestSelected: "连通性测试 ({{count}})",
@@ -1706,6 +1711,17 @@ const zh = {
     hideIp: "隐藏 IP",
     hideVendor: "隐藏厂商",
     showPlaceholderBadge: "显示占位角标（TOPO/LLDP）",
+    showConnectStatus: "显示连通状态点",
+    showAlarmOverlay: "显示告警叠层",
+    showLevelColors: "按分类层级着色",
+    levelUnmatched: "未分类",
+    level: {
+      external: "外部",
+      core: "核心",
+      aggregation: "汇聚",
+      access: "接入",
+      edge: "边缘",
+    },
     hidePorts: "隐藏端口",
     edgeFlow: "链路流动",
     collapseSidebar: "折叠侧栏",
diff --git a/web/src/index.css b/web/src/index.css
index 18f48e4..45b62c5 100644
--- a/web/src/index.css
+++ b/web/src/index.css
@@ -7603,6 +7603,109 @@ pre {
   pointer-events: none;
 }
 
+.topo-node__conn {
+  position: absolute;
+  left: -2px;
+  bottom: -2px;
+  z-index: 2;
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  border: 1.5px solid rgba(15, 23, 42, 0.9);
+  pointer-events: none;
+  box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.25);
+}
+.topo-node__conn--pass {
+  background: #22c55e;
+}
+.topo-node__conn--fail {
+  background: #ef4444;
+}
+.topo-node__conn--testing {
+  background: #f59e0b;
+}
+.topo-node__conn--unknown {
+  background: #64748b;
+}
+
+.topo-node__alarm {
+  position: absolute;
+  top: -4px;
+  right: -5px;
+  z-index: 3;
+  min-width: 14px;
+  padding: 0 3px;
+  border-radius: 8px;
+  font-size: 8px;
+  font-weight: 700;
+  line-height: 1.35;
+  color: #fff;
+  pointer-events: none;
+  border: 1px solid rgba(15, 23, 42, 0.75);
+}
+.topo-node__alarm--critical {
+  background: #dc2626;
+}
+.topo-node__alarm--major {
+  background: #ea580c;
+}
+.topo-node__alarm--minor {
+  background: #ca8a04;
+}
+.topo-node__alarm--warning,
+.topo-node__alarm--indeterminate,
+.topo-node__alarm--unknown {
+  background: #d97706;
+}
+
+.topo-node__unmatched {
+  position: absolute;
+  top: -3px;
+  right: -4px;
+  z-index: 2;
+  width: 12px;
+  height: 12px;
+  border-radius: 50%;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  background: rgba(51, 65, 85, 0.95);
+  border: 1px solid rgba(148, 163, 184, 0.55);
+  color: #e2e8f0;
+  font-size: 8px;
+  font-weight: 700;
+  line-height: 1;
+  pointer-events: none;
+}
+
+.topo-node.is-level-external .topo-node__glyph {
+  box-shadow: inset 0 0 0 2px #38bdf8;
+}
+.topo-node.is-level-core .topo-node__glyph {
+  box-shadow: inset 0 0 0 2px #a78bfa;
+}
+.topo-node.is-level-aggregation .topo-node__glyph {
+  box-shadow: inset 0 0 0 2px #34d399;
+}
+.topo-node.is-level-access .topo-node__glyph {
+  box-shadow: inset 0 0 0 2px #fbbf24;
+}
+.topo-node.is-level-edge .topo-node__glyph {
+  box-shadow: inset 0 0 0 2px #fb7185;
+}
+.topo-node.is-level-unmatched .topo-node__glyph {
+  box-shadow: inset 0 0 0 2px rgba(148, 163, 184, 0.55);
+}
+
+.topo-node.has-alarm--critical .topo-node__glyph {
+  outline: 2px solid rgba(220, 38, 38, 0.85);
+  outline-offset: 1px;
+}
+.topo-node.has-alarm--major .topo-node__glyph {
+  outline: 2px solid rgba(234, 88, 12, 0.85);
+  outline-offset: 1px;
+}
+
 .topo-truncate-banner {
   position: absolute;
   top: 8px;
diff --git a/web/src/pages/TopologyPage.tsx b/web/src/pages/TopologyPage.tsx
index 80a81e1..54e5400 100644
--- a/web/src/pages/TopologyPage.tsx
+++ b/web/src/pages/TopologyPage.tsx
@@ -5,6 +5,9 @@ import {
   SCALE_BUNDLE_WIDTH_KEY,
   SEP,
   SHOW_PLACEHOLDER_BADGE_KEY,
+  SHOW_CONNECT_STATUS_KEY,
+  SHOW_ALARM_OVERLAY_KEY,
+  SHOW_LEVEL_COLORS_KEY,
   WORLD_MAP_ENABLED,
 } from "./topology/constants";
 import type { CtxMenu, PaletteItem, PaletteSource } from "./topology/pageTypes";
@@ -53,6 +56,7 @@ import { useTopologyTreeNav } from "./topology/hooks/useTopologyTreeNav";
 import { useTopologyCanvas } from "./topology/hooks/useTopologyCanvas";
 import { useTopologyCreateNe } from "./topology/hooks/useTopologyCreateNe";
 import { useTopologyConnectTest } from "./topology/hooks/useTopologyConnectTest";
+import { useTopologyAlarmOverlay } from "./topology/hooks/useTopologyAlarmOverlay";
 import {
   lazy,
   Suspense,
@@ -139,6 +143,15 @@ export function TopologyPage() {
   const [showPlaceholderBadge, setShowPlaceholderBadge] = useState(() =>
     loadBoolFlag(SHOW_PLACEHOLDER_BADGE_KEY, false),
   );
+  const [showConnectStatus, setShowConnectStatus] = useState(() =>
+    loadBoolFlag(SHOW_CONNECT_STATUS_KEY, true),
+  );
+  const [showAlarmOverlay, setShowAlarmOverlay] = useState(() =>
+    loadBoolFlag(SHOW_ALARM_OVERLAY_KEY, true),
+  );
+  const [showLevelColors, setShowLevelColors] = useState(() =>
+    loadBoolFlag(SHOW_LEVEL_COLORS_KEY, true),
+  );
   const [edgeFlow, setEdgeFlow] = useState(false);
   const [edgeDefaults, setEdgeDefaults] = useState<EdgeDefaults>(() => loadEdgeDefaults());
   const [canvasBg, setCanvasBg] = useState(loadCanvasBg);
@@ -317,6 +330,9 @@ export function TopologyPage() {
     hideVendor,
     hidePorts,
     showPlaceholderBadge,
+    showConnectStatus,
+    showAlarmOverlay,
+    showLevelColors,
     expandPhysicalLinks,
     scaleBundleWidth,
     edgeFlow,
@@ -728,6 +744,11 @@ export function TopologyPage() {
   const selectedNodes = useMemo(() => nodes.filter((n) => n.selected), [nodes]);
   const selectedNode = selectedNodes[0] || null;
   const selectedNodeIds = useMemo(() => selectedNodes.map((n) => n.id), [selectedNodes]);
+
+  const { alarmByNodeId } = useTopologyAlarmOverlay({
+    enabled: canvasMode && showAlarmOverlay && !isWorldFlatCanvas,
+    nodes,
+  });
   const selectedEdge = useMemo(() => {
     if (!selectedEdgeId) return null;
     return (
@@ -844,7 +865,7 @@ export function TopologyPage() {
     onManagedFormSaved,
   } = createNe;
 
-  const connectTest = useTopologyConnectTest({ closeCtxMenu });
+  const connectTest = useTopologyConnectTest({ closeCtxMenu, mapId, setNodes });
   const {
     connectDetailRow,
     connectTestSubmitting,
@@ -1387,6 +1408,22 @@ export function TopologyPage() {
     showError(t("topology.noNeLink"));
   };
 
+  const openAlarmsFor = (node: Node<NeNodeData> | null) => {
+    closeCtxMenu();
+    if (!node || node.data.kind === "region") {
+      showError(t("topology.noAlarmLink"));
+      return;
+    }
+    const host = String(node.data.label || node.data.ne_ip || "").trim();
+    const q = new URLSearchParams();
+    if (host) q.set("host", host);
+    q.set("cleared", "false");
+    openOrFocusModule({
+      moduleId: "network",
+      path: `/network/alarms?${q.toString()}`,
+    });
+  };
+
   const openPortTrafficForEdge = (edge: Edge | null) => {
     closeCtxMenu();
     if (!edge) {
@@ -2104,6 +2141,12 @@ export function TopologyPage() {
               onHideVendorChange={setHideVendor}
               showPlaceholderBadge={showPlaceholderBadge}
               onShowPlaceholderBadgeChange={setShowPlaceholderBadge}
+              showConnectStatus={showConnectStatus}
+              onShowConnectStatusChange={setShowConnectStatus}
+              showAlarmOverlay={showAlarmOverlay}
+              onShowAlarmOverlayChange={setShowAlarmOverlay}
+              showLevelColors={showLevelColors}
+              onShowLevelColorsChange={setShowLevelColors}
               hidePorts={hidePorts}
               onHidePortsChange={setHidePorts}
               expandPhysicalLinks={expandPhysicalLinks}
@@ -2210,6 +2253,7 @@ export function TopologyPage() {
                 >
                   <TopologyReactFlowView
                     displayOpts={displayOpts}
+                    alarmByNodeId={alarmByNodeId}
                     nodes={nodes}
                     setNodes={setNodes}
                     edges={edges}
@@ -2450,6 +2494,7 @@ export function TopologyPage() {
           onDiscoverOne={discoverOneFor}
           onOpenWebcrt={openWebcrtFor}
           onOpenNe={openNeFor}
+          onOpenAlarms={openAlarmsFor}
           onConnectTest={runConnectTestForNode}
           connectTestBusy={connectTestSubmitting}
           onPurgePlaceholder={purgePlaceholderById}
diff --git a/web/src/pages/network/NetworkAlarmsPage.tsx b/web/src/pages/network/NetworkAlarmsPage.tsx
index 7b085bb..24f1478 100644
--- a/web/src/pages/network/NetworkAlarmsPage.tsx
+++ b/web/src/pages/network/NetworkAlarmsPage.tsx
@@ -1,4 +1,5 @@
-import { useState } from "react";
+import { useEffect, useState } from "react";
+import { useSearchParams } from "react-router-dom";
 import { useQuery } from "@tanstack/react-query";
 import { ListPager } from "../../components/ListPager";
 import { queryKeys } from "../../constants/queryKeys";
@@ -25,6 +26,7 @@ function severityClass(sev: string | null | undefined): string {
 export function NetworkAlarmsPage() {
   const { t } = useI18n();
   const { showOk, showError } = useToast();
+  const [searchParams] = useSearchParams();
   const [curSeverity, setCurSeverity] = useState("");
   const [curCleared, setCurCleared] = useState("");
   const [curHostName, setCurHostName] = useState("");
@@ -33,6 +35,32 @@ export function NetworkAlarmsPage() {
   const [curPageSize, setCurPageSize] = useState(50);
   const [exporting, setExporting] = useState(false);
 
+  // Deep-link from topology (and similar): ?host=&cleared=&severity=&keyword=
+  useEffect(() => {
+    const host = searchParams.get("host");
+    const cleared = searchParams.get("cleared");
+    const severity = searchParams.get("severity");
+    const keyword = searchParams.get("keyword");
+    let touched = false;
+    if (host != null) {
+      setCurHostName(host);
+      touched = true;
+    }
+    if (cleared != null) {
+      setCurCleared(cleared);
+      touched = true;
+    }
+    if (severity != null) {
+      setCurSeverity(severity);
+      touched = true;
+    }
+    if (keyword != null) {
+      setCurKeyword(keyword);
+      touched = true;
+    }
+    if (touched) setCurPage(1);
+  }, [searchParams]);
+
   const debouncedKeyword = useDebouncedValue(curKeyword, 300);
   const debouncedHost = useDebouncedValue(curHostName, 300);
 
diff --git a/web/src/pages/topology/TopologyCtxMenu.tsx b/web/src/pages/topology/TopologyCtxMenu.tsx
index bf4a505..dcf09ea 100644
--- a/web/src/pages/topology/TopologyCtxMenu.tsx
+++ b/web/src/pages/topology/TopologyCtxMenu.tsx
@@ -43,6 +43,7 @@ export type TopologyCtxMenuProps = {
   onDiscoverOne: (node: Node<NeNodeData> | null) => void;
   onOpenWebcrt: (node: Node<NeNodeData> | null) => void;
   onOpenNe: (node: Node<NeNodeData> | null) => void;
+  onOpenAlarms: (node: Node<NeNodeData> | null) => void;
   onConnectTest: (node: Node<NeNodeData> | null) => void;
   connectTestBusy?: boolean;
   onPurgePlaceholder: (id: string) => void;
@@ -86,6 +87,7 @@ export function TopologyCtxMenu({
   onDiscoverOne,
   onOpenWebcrt,
   onOpenNe,
+  onOpenAlarms,
   onConnectTest,
   connectTestBusy = false,
   onPurgePlaceholder,
@@ -277,6 +279,16 @@ export function TopologyCtxMenu({
               {t("topology.openNe")}
             </button>
           </li>
+          <li role="none">
+            <button
+              type="button"
+              className="topo-ctx__item"
+              role="menuitem"
+              onClick={() => onOpenAlarms(selectedNode)}
+            >
+              {t("topology.openAlarms")}
+            </button>
+          </li>
           <li role="none">
             <button
               type="button"
diff --git a/web/src/pages/topology/TopologyReactFlowView.tsx b/web/src/pages/topology/TopologyReactFlowView.tsx
index fdc5151..5c09ea3 100644
--- a/web/src/pages/topology/TopologyReactFlowView.tsx
+++ b/web/src/pages/topology/TopologyReactFlowView.tsx
@@ -27,6 +27,12 @@ import { ParallelEdge } from "./ParallelEdge";
 import { isAggregateEdgeId } from "./linkDisplay";
 import type { ToolMode, ToolModeBehavior } from "./toolMode";
 import type { TopologyViewRole, TopologyWorldTransform } from "../../types";
+import { isPlaceholderSource } from "./searchUtils";
+import { nodeIconTone } from "./vendorTone";
+import { levelToneKey } from "./levelTone";
+import type { NodeAlarmSummary } from "./alarmOverlay";
+
+export { isPlaceholderSource };
 
 export type NeNodeData = {
   label: string;
@@ -36,6 +42,10 @@ export type NeNodeData = {
   vendor: string;
   connect_status: string;
   managed_source?: string;
+  /** Fabric classify level (from graph). */
+  level?: number | null;
+  /** Fabric role alias (external|core|aggregation|access|edge). */
+  fabric_role?: string;
   kind?: "ne" | "region" | "layer";
   folder_id?: string;
   view_id?: string;
@@ -50,6 +60,9 @@ export type TopoDisplayOpts = {
   hidePorts: boolean;
   connectMode: boolean;
   showPlaceholderBadge: boolean;
+  showConnectStatus: boolean;
+  showAlarmOverlay: boolean;
+  showLevelColors: boolean;
   worldVisualLod: "dot" | "pin" | "full";
 };
 
@@ -59,15 +72,24 @@ const TopoDisplayContext = createContext<TopoDisplayOpts>({
   hidePorts: true,
   connectMode: false,
   showPlaceholderBadge: false,
+  showConnectStatus: true,
+  showAlarmOverlay: true,
+  showLevelColors: true,
   worldVisualLod: "full",
 });
 
+const TopoAlarmContext = createContext<ReadonlyMap<string, NodeAlarmSummary>>(new Map());
+const emptyAlarmMap: ReadonlyMap<string, NodeAlarmSummary> = new Map();
+
 const SEP = " / ";
 
-import { isPlaceholderSource } from "./searchUtils";
-import { nodeIconTone } from "./vendorTone";
-
-export { isPlaceholderSource };
+function normalizeConnectStatus(raw: string | undefined): "pass" | "fail" | "testing" | "unknown" {
+  const s = String(raw || "").trim().toLowerCase();
+  if (s === "pass" || s === "ok") return "pass";
+  if (s === "fail" || s === "error") return "fail";
+  if (s === "testing") return "testing";
+  return "unknown";
+}
 
 function RouterIcon() {
   return (
@@ -107,13 +129,25 @@ function FullscreenIcon({ exit }: { exit?: boolean }) {
   );
 }
 
-const NeNode = memo(function NeNode({ data, selected }: NodeProps<Node<NeNodeData>>) {
-  const { hideIp, hideVendor, connectMode, showPlaceholderBadge, worldVisualLod } =
-    useContext(TopoDisplayContext);
+const NeNode = memo(function NeNode({ id, data, selected }: NodeProps<Node<NeNodeData>>) {
+  const {
+    hideIp,
+    hideVendor,
+    connectMode,
+    showPlaceholderBadge,
+    showConnectStatus,
+    showAlarmOverlay,
+    showLevelColors,
+    worldVisualLod,
+  } = useContext(TopoDisplayContext);
+  const alarmMap = useContext(TopoAlarmContext);
   const isRegion = data.kind === "region";
   const tone = isRegion ? "region" : nodeIconTone(data.vendor, data.managed_ne_id, data.ume_ne_id);
   const placeholder = !isRegion && isPlaceholderSource(data.managed_source, data.ne_ip);
   const showBadge = placeholder && showPlaceholderBadge;
+  const connect = normalizeConnectStatus(data.connect_status);
+  const levelKey = levelToneKey(data.level, data.fabric_role);
+  const alarm = !isRegion && showAlarmOverlay ? alarmMap.get(id) : undefined;
   const name = data.label || (!hideIp ? data.ne_ip : "") || (isRegion ? "Region" : "NE");
   const secondary = isRegion
     ? []
@@ -122,12 +156,22 @@ const NeNode = memo(function NeNode({ data, selected }: NodeProps<Node<NeNodeDat
         hideVendor || !data.vendor ? "" : data.vendor,
       ].filter(Boolean);
 
+  const statusClass = [
+    `topo-node--${tone}`,
+    selected ? "is-selected" : "",
+    connectMode && !isRegion ? "is-connect-mode" : "",
+    showBadge ? "is-placeholder" : "",
+    isRegion ? "is-region" : "",
+    showConnectStatus && !isRegion ? `is-connect-${connect}` : "",
+    showLevelColors && !isRegion && levelKey ? `is-level-${levelKey}` : "",
+    alarm ? `has-alarm has-alarm--${alarm.severity}` : "",
+  ]
+    .filter(Boolean)
+    .join(" ");
+
   if (!isRegion && worldVisualLod === "dot") {
     return (
-      <div
-        className={`topo-node topo-node--dot topo-node--${tone}${selected ? " is-selected" : ""}`}
-        title={name}
-      >
+      <div className={`topo-node topo-node--dot ${statusClass}`} title={name}>
         <Handle type="target" position={Position.Left} className="topo-node__handle topo-node__handle--dot" />
         <Handle type="source" position={Position.Right} className="topo-node__handle topo-node__handle--dot" />
         <span className="topo-node__pixel" aria-hidden="true" />
@@ -136,10 +180,7 @@ const NeNode = memo(function NeNode({ data, selected }: NodeProps<Node<NeNodeDat
   }
   if (!isRegion && worldVisualLod === "pin") {
     return (
-      <div
-        className={`topo-node topo-node--pin topo-node--${tone}${selected ? " is-selected" : ""}`}
-        title={name}
-      >
+      <div className={`topo-node topo-node--pin ${statusClass}`} title={name}>
         <Handle type="target" position={Position.Left} className="topo-node__handle topo-node__handle--dot" />
         <Handle type="source" position={Position.Right} className="topo-node__handle topo-node__handle--dot" />
         <span className="topo-node__pin" aria-hidden="true" />
@@ -149,10 +190,16 @@ const NeNode = memo(function NeNode({ data, selected }: NodeProps<Node<NeNodeDat
 
   return (
     <div
-      className={`topo-node topo-node--${tone}${selected ? " is-selected" : ""}${
-        connectMode && !isRegion ? " is-connect-mode" : ""
-      }${showBadge ? " is-placeholder" : ""}${isRegion ? " is-region" : ""}`}
-      title={isRegion ? name : showBadge ? data.managed_source || "placeholder" : name}
+      className={`topo-node ${statusClass}`}
+      title={
+        alarm
+          ? `${name} · alarm ${alarm.severity}×${alarm.count}`
+          : isRegion
+            ? name
+            : showBadge
+              ? data.managed_source || "placeholder"
+              : name
+      }
     >
       <div className="topo-node__glyph">
         <Handle
@@ -168,7 +215,14 @@ const NeNode = memo(function NeNode({ data, selected }: NodeProps<Node<NeNodeDat
           isConnectable={connectMode && !isRegion}
         />
         {!isRegion ? <RouterIcon /> : <RegionCanvasIcon />}
-        {showBadge ? (
+        {showConnectStatus && !isRegion ? (
+          <span className={`topo-node__conn topo-node__conn--${connect}`} aria-hidden />
+        ) : null}
+        {alarm ? (
+          <span className={`topo-node__alarm topo-node__alarm--${alarm.severity}`} aria-hidden>
+            {alarm.count > 99 ? "99+" : alarm.count}
+          </span>
+        ) : showBadge ? (
           <span className="topo-node__badge" aria-hidden>
             {String(data.managed_source || "ph").slice(0, 4)}
           </span>
@@ -249,6 +303,7 @@ type CtxMenuLike =
 
 export type TopologyReactFlowViewProps = {
   displayOpts: TopoDisplayOpts;
+  alarmByNodeId?: ReadonlyMap<string, NodeAlarmSummary>;
   nodes: Node<NeNodeData>[];
   setNodes: Dispatch<SetStateAction<Node<NeNodeData>[]>>;
   edges: Edge[];
@@ -297,6 +352,7 @@ export type TopologyReactFlowViewProps = {
 export default function TopologyReactFlowView(props: TopologyReactFlowViewProps) {
   const {
     displayOpts,
+    alarmByNodeId,
     nodes,
     setNodes,
     setEdges,
@@ -338,6 +394,7 @@ export default function TopologyReactFlowView(props: TopologyReactFlowViewProps)
 
   return (
     <TopoDisplayContext.Provider value={displayOpts}>
+      <TopoAlarmContext.Provider value={alarmByNodeId || emptyAlarmMap}>
       <ReactFlow
         nodes={
           isWorldFlatCanvas && worldVisualLod !== "full"
@@ -513,6 +570,7 @@ export default function TopologyReactFlowView(props: TopologyReactFlowViewProps)
           />
         ) : null}
       </ReactFlow>
+      </TopoAlarmContext.Provider>
     </TopoDisplayContext.Provider>
   );
 }
diff --git a/web/src/pages/topology/TopologyViewTools.tsx b/web/src/pages/topology/TopologyViewTools.tsx
index f46a331..5bf9eb9 100644
--- a/web/src/pages/topology/TopologyViewTools.tsx
+++ b/web/src/pages/topology/TopologyViewTools.tsx
@@ -13,6 +13,9 @@ import {
   SCALE_BUNDLE_WIDTH_KEY,
   SEP,
   SHOW_PLACEHOLDER_BADGE_KEY,
+  SHOW_CONNECT_STATUS_KEY,
+  SHOW_ALARM_OVERLAY_KEY,
+  SHOW_LEVEL_COLORS_KEY,
 } from "./constants";
 import {
   DEFAULT_LABEL_COLORS,
@@ -47,6 +50,12 @@ export type TopologyViewToolsProps = {
   onHideVendorChange: (v: boolean) => void;
   showPlaceholderBadge: boolean;
   onShowPlaceholderBadgeChange: (v: boolean) => void;
+  showConnectStatus: boolean;
+  onShowConnectStatusChange: (v: boolean) => void;
+  showAlarmOverlay: boolean;
+  onShowAlarmOverlayChange: (v: boolean) => void;
+  showLevelColors: boolean;
+  onShowLevelColorsChange: (v: boolean) => void;
   hidePorts: boolean;
   onHidePortsChange: (v: boolean) => void;
   expandPhysicalLinks: boolean;
@@ -101,6 +110,12 @@ export function TopologyViewTools(props: TopologyViewToolsProps) {
     onHideVendorChange,
     showPlaceholderBadge,
     onShowPlaceholderBadgeChange,
+    showConnectStatus,
+    onShowConnectStatusChange,
+    showAlarmOverlay,
+    onShowAlarmOverlayChange,
+    showLevelColors,
+    onShowLevelColorsChange,
     hidePorts,
     onHidePortsChange,
     expandPhysicalLinks,
@@ -169,6 +184,42 @@ export function TopologyViewTools(props: TopologyViewToolsProps) {
             />
             {t("topology.showPlaceholderBadge")}
           </label>
+          <label className="topo-display-toggles__item">
+            <input
+              type="checkbox"
+              checked={showConnectStatus}
+              onChange={(e) => {
+                const next = e.target.checked;
+                onShowConnectStatusChange(next);
+                persistBoolFlag(SHOW_CONNECT_STATUS_KEY, next);
+              }}
+            />
+            {t("topology.showConnectStatus")}
+          </label>
+          <label className="topo-display-toggles__item">
+            <input
+              type="checkbox"
+              checked={showAlarmOverlay}
+              onChange={(e) => {
+                const next = e.target.checked;
+                onShowAlarmOverlayChange(next);
+                persistBoolFlag(SHOW_ALARM_OVERLAY_KEY, next);
+              }}
+            />
+            {t("topology.showAlarmOverlay")}
+          </label>
+          <label className="topo-display-toggles__item">
+            <input
+              type="checkbox"
+              checked={showLevelColors}
+              onChange={(e) => {
+                const next = e.target.checked;
+                onShowLevelColorsChange(next);
+                persistBoolFlag(SHOW_LEVEL_COLORS_KEY, next);
+              }}
+            />
+            {t("topology.showLevelColors")}
+          </label>
           <label className="topo-display-toggles__item">
             <input type="checkbox" checked={hidePorts} onChange={(e) => onHidePortsChange(e.target.checked)} />
             {t("topology.hidePorts")}
diff --git a/web/src/pages/topology/alarmOverlay.ts b/web/src/pages/topology/alarmOverlay.ts
new file mode 100644
index 0000000..a902e55
--- /dev/null
+++ b/web/src/pages/topology/alarmOverlay.ts
@@ -0,0 +1,73 @@
+/** Alarm severity helpers for topology overlay (UME current alarms). */
+
+export type AlarmSeverity =
+  | "critical"
+  | "major"
+  | "minor"
+  | "warning"
+  | "indeterminate"
+  | "cleared"
+  | "unknown";
+
+export type NodeAlarmSummary = {
+  severity: AlarmSeverity;
+  count: number;
+};
+
+const SEV_RANK: Record<string, number> = {
+  critical: 60,
+  major: 50,
+  minor: 40,
+  warning: 30,
+  indeterminate: 20,
+  unknown: 10,
+  cleared: 0,
+};
+
+export function normalizeAlarmSeverity(raw: string | undefined | null): AlarmSeverity {
+  const s = String(raw || "").trim().toLowerCase();
+  if (!s) return "unknown";
+  if (s.includes("critical") || s === "5") return "critical";
+  if (s.includes("major") || s === "4") return "major";
+  if (s.includes("minor") || s === "3") return "minor";
+  if (s.includes("warning") || s.includes("warn") || s === "2") return "warning";
+  if (s.includes("indeterminate") || s === "1") return "indeterminate";
+  if (s.includes("clear") || s === "0") return "cleared";
+  return "unknown";
+}
+
+export function severityRank(sev: string): number {
+  return SEV_RANK[normalizeAlarmSeverity(sev)] ?? 0;
+}
+
+export function worseSeverity(a: string, b: string): AlarmSeverity {
+  return severityRank(a) >= severityRank(b) ? normalizeAlarmSeverity(a) : normalizeAlarmSeverity(b);
+}
+
+export function normalizeHostKey(value: string | undefined | null): string {
+  return String(value || "")
+    .trim()
+    .toLowerCase()
+    .replace(/\s+/g, " ");
+}
+
+/** IPv4 / IPv6-ish — safe for exact alarm join. */
+export function looksLikeIp(value: string | undefined | null): boolean {
+  const s = normalizeHostKey(value);
+  if (!s) return false;
+  if (/^\d{1,3}(\.\d{1,3}){3}$/.test(s)) return true;
+  // Compact check: colon + hex/digits (avoid matching short names).
+  return s.includes(":") && /^[0-9a-f:%.]+$/i.test(s) && s.length >= 4;
+}
+
+/**
+ * Host/name keys used for alarm overlay join.
+ * Reject short bare labels (e.g. "r1") that collide across sites.
+ */
+export function isStrongHostKey(value: string | undefined | null): boolean {
+  const k = normalizeHostKey(value);
+  if (!k) return false;
+  if (looksLikeIp(k)) return true;
+  if (k.includes(".")) return true; // FQDN / dotted inventory name
+  return k.length >= 8;
+}
diff --git a/web/src/pages/topology/constants.ts b/web/src/pages/topology/constants.ts
index e65525d..5f28f53 100644
--- a/web/src/pages/topology/constants.ts
+++ b/web/src/pages/topology/constants.ts
@@ -23,6 +23,9 @@ export const DISCOVER_AUTO_ADD_KEY = "netx.topology.discoverAutoAddUnmatched.v2"
 export const DISCOVER_PROJECT_NEIGHBORS_KEY = "netx.topology.discoverProjectNeighbors.v2";
 export const SCALE_BUNDLE_WIDTH_KEY = "netx.topology.scaleBundleWidth";
 export const SHOW_PLACEHOLDER_BADGE_KEY = "netx.topology.showPlaceholderBadge";
+export const SHOW_CONNECT_STATUS_KEY = "netx.topology.showConnectStatus";
+export const SHOW_ALARM_OVERLAY_KEY = "netx.topology.showAlarmOverlay";
+export const SHOW_LEVEL_COLORS_KEY = "netx.topology.showLevelColors";
 export const CANVAS_BG_KEY = "netx.topology.canvasBg";
 export const DEFAULT_CANVAS_BG = "#0f172a";
 export const LEGACY_CANVAS_BG = "#dbeafe";
diff --git a/web/src/pages/topology/graphFlow.ts b/web/src/pages/topology/graphFlow.ts
index 4d5565c..0d87b24 100644
--- a/web/src/pages/topology/graphFlow.ts
+++ b/web/src/pages/topology/graphFlow.ts
@@ -49,6 +49,8 @@ export function graphToFlow(
         vendor: n.vendor || "",
         connect_status: n.connect_status || "",
         managed_source: n.managed_source || "",
+        level: n.level ?? null,
+        fabric_role: n.role || "",
         kind: (n.kind as NeNodeData["kind"]) || (isRegion ? "region" : "ne"),
         folder_id: n.folder_id || "",
         view_id: n.view_id || "",
@@ -104,7 +106,7 @@ export function graphFingerprint(graph: TopologyViewGraph): string {
   const nodes = [...graph.nodes]
     .map(
       (n) =>
-        `${n.fabric_node_id}:${Math.round(Number(n.x) || 0)}:${Math.round(Number(n.y) || 0)}:${n.label || n.name || ""}`,
+        `${n.fabric_node_id}:${Math.round(Number(n.x) || 0)}:${Math.round(Number(n.y) || 0)}:${n.label || n.name || ""}:${n.connect_status || ""}:${n.level ?? ""}:${n.role || ""}`,
     )
     .sort()
     .join("|");
@@ -115,6 +117,58 @@ export function graphFingerprint(graph: TopologyViewGraph): string {
   return `${nodes}#${edges}#${graph.outside_peers?.length || 0}#${graph.world_transform?.lod || ""}#${graph.scatter?.length || 0}#${graph.world_transform?.total || 0}`;
 }
 
+/** Overlay / inventory fields safe to refresh while the canvas has unsaved geometry edits. */
+export function overlayFingerprint(graph: TopologyViewGraph): string {
+  return [...graph.nodes]
+    .map(
+      (n) =>
+        `${n.fabric_node_id}:${n.connect_status || ""}:${n.level ?? ""}:${n.role || ""}:${n.ume_ne_id || ""}:${n.managed_ne_id || ""}:${n.ip || ""}:${n.vendor || ""}:${n.managed_source || ""}`,
+    )
+    .sort()
+    .join("|");
+}
+
+/**
+ * Patch live overlay fields onto existing RF nodes without touching positions/selection.
+ * Used when dirty lock blocks a full graph apply.
+ */
+export function mergeOverlayIntoNodes(
+  current: Node<NeNodeData>[],
+  graph: TopologyViewGraph,
+): { nodes: Node<NeNodeData>[]; changed: boolean } {
+  const byId = new Map(graph.nodes.map((n) => [n.fabric_node_id, n]));
+  let changed = false;
+  const nodes = current.map((node) => {
+    const g = byId.get(node.id);
+    if (!g || node.data.kind === "region") return node;
+    const next = {
+      connect_status: g.connect_status || "",
+      level: g.level ?? null,
+      fabric_role: g.role || "",
+      ume_ne_id: g.ume_ne_id || "",
+      managed_ne_id: g.managed_ne_id || "",
+      ne_ip: g.ip || "",
+      vendor: g.vendor || "",
+      managed_source: g.managed_source || "",
+    };
+    if (
+      node.data.connect_status === next.connect_status &&
+      (node.data.level ?? null) === next.level &&
+      (node.data.fabric_role || "") === next.fabric_role &&
+      (node.data.ume_ne_id || "") === next.ume_ne_id &&
+      (node.data.managed_ne_id || "") === next.managed_ne_id &&
+      (node.data.ne_ip || "") === next.ne_ip &&
+      (node.data.vendor || "") === next.vendor &&
+      (node.data.managed_source || "") === next.managed_source
+    ) {
+      return node;
+    }
+    changed = true;
+    return { ...node, data: { ...node.data, ...next } };
+  });
+  return { nodes, changed };
+}
+
 export function applyViewGraph(
   graph: TopologyViewGraph,
   defaults: EdgeDefaults,
diff --git a/web/src/pages/topology/hooks/useTopologyAlarmOverlay.ts b/web/src/pages/topology/hooks/useTopologyAlarmOverlay.ts
new file mode 100644
index 0000000..51f0be5
--- /dev/null
+++ b/web/src/pages/topology/hooks/useTopologyAlarmOverlay.ts
@@ -0,0 +1,131 @@
+import { useMemo } from "react";
+import { useQuery } from "@tanstack/react-query";
+import type { Node } from "@xyflow/react";
+import { fetchUmeCurrentAlarms } from "../../../services/api";
+import { queryKeys } from "../../../constants/queryKeys";
+import type { UmeAlarmItem } from "../../../types";
+import { fetchAllPages } from "../../../utils/csvExport";
+import {
+  isStrongHostKey,
+  looksLikeIp,
+  normalizeAlarmSeverity,
+  normalizeHostKey,
+  worseSeverity,
+  type NodeAlarmSummary,
+} from "../alarmOverlay";
+import type { NeNodeData } from "../TopologyReactFlowView";
+
+function accumulate(
+  map: Map<string, NodeAlarmSummary>,
+  key: string,
+  severity: string,
+) {
+  const k = key.trim();
+  if (!k) return;
+  const sev = normalizeAlarmSeverity(severity);
+  if (sev === "cleared") return;
+  const prev = map.get(k);
+  if (!prev) {
+    map.set(k, { severity: sev, count: 1 });
+    return;
+  }
+  map.set(k, {
+    severity: worseSeverity(prev.severity, sev),
+    count: prev.count + 1,
+  });
+}
+
+function buildIndexes(items: UmeAlarmItem[]) {
+  const byNeId = new Map<string, NodeAlarmSummary>();
+  const byHost = new Map<string, NodeAlarmSummary>();
+  for (const item of items) {
+    if (String(item.is_cleared || "").toLowerCase() === "true" || item.is_cleared === "1") {
+      continue;
+    }
+    accumulate(byNeId, String(item.ne_id || "").trim(), item.perceived_severity);
+    // Only index strong host keys — skip short names that false-match canvas labels.
+    for (const raw of [item.host_name, item.ne_name, item.user_label]) {
+      const key = normalizeHostKey(raw);
+      if (isStrongHostKey(key)) {
+        accumulate(byHost, key, item.perceived_severity);
+      }
+    }
+  }
+  return { byNeId, byHost };
+}
+
+type Args = {
+  enabled: boolean;
+  nodes: Node<NeNodeData>[];
+};
+
+const ALARM_PAGE_SIZE = 500;
+const ALARM_MAX_ROWS = 5000;
+
+/** Poll uncleared UME alarms and join onto canvas nodes by ume_ne_id / strong name / IP. */
+export function useTopologyAlarmOverlay({ enabled, nodes }: Args) {
+  const query = useQuery({
+    queryKey: [...queryKeys.umeCurrentAlarmsAll, "topo-overlay", "uncleared"],
+    queryFn: () =>
+      fetchAllPages<UmeAlarmItem>({
+        pageSize: ALARM_PAGE_SIZE,
+        maxRows: ALARM_MAX_ROWS,
+        fetchPage: (page, pageSize) =>
+          fetchUmeCurrentAlarms({
+            severity: "",
+            isCleared: "false",
+            hostName: "",
+            keyword: "",
+            page,
+            pageSize,
+          }),
+      }),
+    enabled,
+    refetchInterval: enabled ? 30_000 : false,
+    staleTime: 15_000,
+  });
+
+  const alarmByNodeId = useMemo(() => {
+    const out = new Map<string, NodeAlarmSummary>();
+    if (!enabled) return out;
+    const items = query.data || [];
+    if (!items.length || !nodes.length) return out;
+    const { byNeId, byHost } = buildIndexes(items);
+
+    // Host keys claimed by >1 canvas node are ambiguous → skip name/IP join for those keys.
+    const hostClaimCount = new Map<string, number>();
+    for (const n of nodes) {
+      if (n.data.kind === "region") continue;
+      for (const raw of [n.data.label, n.data.ne_ip]) {
+        const key = normalizeHostKey(raw);
+        if (!isStrongHostKey(key)) continue;
+        hostClaimCount.set(key, (hostClaimCount.get(key) || 0) + 1);
+      }
+    }
+
+    for (const n of nodes) {
+      if (n.data.kind === "region") continue;
+      const umeId = String(n.data.ume_ne_id || "").trim();
+      let hit = umeId ? byNeId.get(umeId) : undefined;
+      if (!hit) {
+        const candidates = [normalizeHostKey(n.data.ne_ip), normalizeHostKey(n.data.label)].filter(
+          (k) => isStrongHostKey(k) && (hostClaimCount.get(k) || 0) === 1,
+        );
+        // Prefer IP over label when both present.
+        candidates.sort((a, b) => Number(looksLikeIp(b)) - Number(looksLikeIp(a)));
+        for (const key of candidates) {
+          hit = byHost.get(key);
+          if (hit) break;
+        }
+      }
+      if (hit) out.set(n.id, hit);
+    }
+    return out;
+  }, [enabled, query.data, nodes]);
+
+  return {
+    alarmByNodeId,
+    alarmLoading: query.isLoading,
+    alarmError: query.error ? String(query.error) : "",
+  };
+}
diff --git a/web/src/pages/topology/hooks/useTopologyCanvas.ts b/web/src/pages/topology/hooks/useTopologyCanvas.ts
index df9c0ae..916caba 100644
--- a/web/src/pages/topology/hooks/useTopologyCanvas.ts
+++ b/web/src/pages/topology/hooks/useTopologyCanvas.ts
@@ -12,7 +12,7 @@ import {
 } from "../constants";
 import type { EdgeDefaults, EdgeStyleData } from "../edgeStyle";
 import { withEdgeVisual } from "../edgeStyle";
-import { graphFingerprint, graphToFlow } from "../graphFlow";
+import { graphFingerprint, graphToFlow, mergeOverlayIntoNodes, overlayFingerprint } from "../graphFlow";
 import {
   buildLinkDisplayEdges,
   type LinkMember,
@@ -45,6 +45,9 @@ export type UseTopologyCanvasOptions = {
   hideVendor: boolean;
   hidePorts: boolean;
   showPlaceholderBadge: boolean;
+  showConnectStatus: boolean;
+  showAlarmOverlay: boolean;
+  showLevelColors: boolean;
   expandPhysicalLinks: boolean;
   scaleBundleWidth: boolean;
   edgeFlow: boolean;
@@ -82,6 +85,9 @@ export function useTopologyCanvas(opts: UseTopologyCanvasOptions) {
     hideVendor,
     hidePorts,
     showPlaceholderBadge,
+    showConnectStatus,
+    showAlarmOverlay,
+    showLevelColors,
     expandPhysicalLinks,
     scaleBundleWidth,
     edgeFlow,
@@ -106,6 +112,7 @@ export function useTopologyCanvas(opts: UseTopologyCanvasOptions) {
   const canvasRef = useRef<HTMLDivElement | null>(null);
   const appliedMapIdRef = useRef("");
   const appliedGraphFpRef = useRef("");
+  const appliedOverlayFpRef = useRef("");
   const pendingFitRef = useRef(false);
   const nodesRef = useRef<Node<NeNodeData>[]>([]);
   const [canvasZoom, setCanvasZoom] = useState(1);
@@ -149,9 +156,22 @@ export function useTopologyCanvas(opts: UseTopologyCanvasOptions) {
       hidePorts,
       connectMode: toolMode === "connect",
       showPlaceholderBadge,
+      showConnectStatus,
+      showAlarmOverlay,
+      showLevelColors,
       worldVisualLod,
     }),
-    [hideIp, hideVendor, hidePorts, toolMode, showPlaceholderBadge, worldVisualLod],
+    [
+      hideIp,
+      hideVendor,
+      hidePorts,
+      toolMode,
+      showPlaceholderBadge,
+      showConnectStatus,
+      showAlarmOverlay,
+      showLevelColors,
+      worldVisualLod,
+    ],
   );
 
   const displayEdges = useMemo(() => {
@@ -286,13 +306,27 @@ export function useTopologyCanvas(opts: UseTopologyCanvasOptions) {
   useEffect(() => {
     appliedMapIdRef.current = "";
     appliedGraphFpRef.current = "";
+    appliedOverlayFpRef.current = "";
   }, [mapId]);
 
   useEffect(() => {
     if (!canvasMode) return;
     if (!mapId || !graphQuery.data) return;
     const entering = appliedMapIdRef.current !== mapId;
-    if (!entering && dirtyRef.current) return;
+
+    // Dirty geometry: still refresh connect/level/inventory overlays from live graph.
+    if (!entering && dirtyRef.current) {
+      const ofp = overlayFingerprint(graphQuery.data);
+      if (ofp === appliedOverlayFpRef.current) return;
+      const { nodes: merged, changed } = mergeOverlayIntoNodes(nodesRef.current, graphQuery.data);
+      appliedOverlayFpRef.current = ofp;
+      if (changed) {
+        historyLockRef.current = true;
+        setNodes(merged);
+        historyLockRef.current = false;
+      }
+      return;
+    }
 
     const fp = graphFingerprint(graphQuery.data);
     if (!entering && fp === appliedGraphFpRef.current) return;
@@ -310,6 +344,7 @@ export function useTopologyCanvas(opts: UseTopologyCanvasOptions) {
     setNodes(nextNodes);
     setEdges(rfEdges);
     appliedGraphFpRef.current = fp;
+    appliedOverlayFpRef.current = overlayFingerprint(graphQuery.data);
     if (entering) {
       appliedMapIdRef.current = mapId;
       historyRef.current = [];
diff --git a/web/src/pages/topology/hooks/useTopologyConnectTest.ts b/web/src/pages/topology/hooks/useTopologyConnectTest.ts
index 8e04f34..0294c6f 100644
--- a/web/src/pages/topology/hooks/useTopologyConnectTest.ts
+++ b/web/src/pages/topology/hooks/useTopologyConnectTest.ts
@@ -1,6 +1,8 @@
-import { useCallback, useEffect, useState } from "react";
+import { useCallback, useEffect, useState, type Dispatch, type SetStateAction } from "react";
 import type { Node } from "@xyflow/react";
+import { useQueryClient } from "@tanstack/react-query";
 import { connectTestManagedNe, fetchManagedNeById } from "../../../services/api";
+import { queryKeys } from "../../../constants/queryKeys";
 import { useI18n } from "../../../i18n";
 import { useToast } from "../../../hooks/useToast";
 import type { ManagedNeItem } from "../../../types";
@@ -8,30 +10,101 @@ import type { NeNodeData } from "../TopologyReactFlowView";
 
 type Args = {
   closeCtxMenu: () => void;
+  mapId?: string | null;
+  setNodes: Dispatch<SetStateAction<Node<NeNodeData>[]>>;
 };
 
-export function useTopologyConnectTest({ closeCtxMenu }: Args) {
+/** Patch canvas node connect_status without wiping dirty local edits. */
+function patchNodesConnectStatus(
+  setNodes: Dispatch<SetStateAction<Node<NeNodeData>[]>>,
+  updates: Array<{ id: string; status: string }>,
+) {
+  if (!updates.length) return;
+  const byId = new Map(updates.map((u) => [u.id, u.status]));
+  setNodes((ns) =>
+    ns.map((n) => {
+      const mid = String(n.data.managed_ne_id || "").trim();
+      if (!mid || !byId.has(mid)) return n;
+      const status = byId.get(mid) || "unknown";
+      if (n.data.connect_status === status) return n;
+      return { ...n, data: { ...n.data, connect_status: status } };
+    }),
+  );
+}
+
+export function useTopologyConnectTest({ closeCtxMenu, mapId, setNodes }: Args) {
   const { t } = useI18n();
   const { showOk, showError } = useToast();
+  const queryClient = useQueryClient();
   const [detailRow, setDetailRow] = useState<ManagedNeItem | null>(null);
   const [submitting, setSubmitting] = useState(false);
+  /** Managed NE ids whose canvas dots should track poll results. */
+  const [trackingIds, setTrackingIds] = useState<string[]>([]);
 
-  const refreshRow = useCallback(async (id: string) => {
-    const row = await fetchManagedNeById(id);
-    setDetailRow(row);
-    return row;
-  }, []);
+  const finishTracking = useCallback(() => {
+    setTrackingIds([]);
+    if (mapId) {
+      void queryClient.invalidateQueries({ queryKey: queryKeys.topologyGraph(mapId) });
+    }
+    void queryClient.invalidateQueries({ queryKey: queryKeys.managedNeAll });
+  }, [mapId, queryClient]);
 
+  // Poll tracked connect tests → update dots (works even when graph apply is dirty-locked).
   useEffect(() => {
-    if (!detailRow || detailRow.connect_status !== "testing") return;
-    const id = detailRow.id;
-    const timer = window.setInterval(() => {
-      void refreshRow(id).catch(() => {
+    if (!trackingIds.length) return;
+    let cancelled = false;
+    const ids = trackingIds;
+
+    const tick = async () => {
+      try {
+        const rows = await Promise.all(ids.map((id) => fetchManagedNeById(id)));
+        if (cancelled) return;
+        patchNodesConnectStatus(
+          setNodes,
+          rows.map((row) => ({ id: row.id, status: row.connect_status || "unknown" })),
+        );
+        setDetailRow((prev) => {
+          if (!prev) {
+            return ids.length === 1 ? rows[0] : prev;
+          }
+          const match = rows.find((r) => r.id === prev.id);
+          return match || prev;
+        });
+        if (rows.every((r) => r.connect_status !== "testing")) {
+          finishTracking();
+        }
+      } catch {
         /* ignore transient poll errors */
-      });
-    }, 2000);
-    return () => window.clearInterval(timer);
-  }, [detailRow?.id, detailRow?.connect_status, refreshRow]);
+      }
+    };
+
+    void tick();
+    const timer = window.setInterval(() => void tick(), 2000);
+    return () => {
+      cancelled = true;
+      window.clearInterval(timer);
+    };
+  }, [trackingIds, setNodes, finishTracking]);
+
+  const startTracking = useCallback(
+    (ids: string[], openDetail: boolean) => {
+      const unique = [...new Set(ids.map((x) => String(x || "").trim()).filter(Boolean))];
+      if (!unique.length) return;
+      patchNodesConnectStatus(
+        setNodes,
+        unique.map((id) => ({ id, status: "testing" })),
+      );
+      setTrackingIds(unique);
+      if (openDetail && unique.length === 1) {
+        void fetchManagedNeById(unique[0])
+          .then((row) => setDetailRow(row))
+          .catch(() => {
+            /* ignore */
+          });
+      }
+    },
+    [setNodes],
+  );
 
   const runForNode = useCallback(
     async (node: Node<NeNodeData> | null) => {
@@ -45,17 +118,16 @@ export function useTopologyConnectTest({ closeCtxMenu }: Args) {
       try {
         const res = await connectTestManagedNe([managedId]);
         showOk(t("managedNe.connect.submitted", { n: res.submitted }));
-        await refreshRow(managedId);
+        startTracking([managedId], true);
       } catch (err) {
         showError(String(err));
       } finally {
         setSubmitting(false);
       }
     },
-    [closeCtxMenu, refreshRow, showError, showOk, t],
+    [closeCtxMenu, showError, showOk, startTracking, t],
   );
 
-  /** Batch: submit connect tests; open detail only when exactly one managed NE. */
   const runForNodes = useCallback(
     async (nodes: Node<NeNodeData>[]) => {
       closeCtxMenu();
@@ -70,7 +142,7 @@ export function useTopologyConnectTest({ closeCtxMenu }: Args) {
         showError(t("topology.connectTestNeedManaged"));
         return;
       }
-      const skipped = nodes.length - ids.length;
+      const skipped = Math.max(0, nodes.length - ids.length);
       setSubmitting(true);
       try {
         const res = await connectTestManagedNe(ids);
@@ -80,24 +152,22 @@ export function useTopologyConnectTest({ closeCtxMenu }: Args) {
             ? `${msg} · ${t("topology.connectTestSkipped").replace("{{count}}", String(skipped))}`
             : msg,
         );
-        if (ids.length === 1) {
-          await refreshRow(ids[0]);
-        }
+        startTracking(ids, ids.length === 1);
       } catch (err) {
         showError(String(err));
       } finally {
         setSubmitting(false);
       }
     },
-    [closeCtxMenu, refreshRow, showError, showOk, t],
+    [closeCtxMenu, showError, showOk, startTracking, t],
   );
 
   const onRetestSubmitted = useCallback(
     (rowId: string) => {
       showOk(t("managedNe.connect.submitted", { n: 1 }));
-      void refreshRow(rowId);
+      startTracking([rowId], true);
     },
-    [refreshRow, showOk, t],
+    [showOk, startTracking, t],
   );
 
   return {
diff --git a/web/src/pages/topology/hooks/useTopologyCreateNe.ts b/web/src/pages/topology/hooks/useTopologyCreateNe.ts
index 5f485a9..668c9f4 100644
--- a/web/src/pages/topology/hooks/useTopologyCreateNe.ts
+++ b/web/src/pages/topology/hooks/useTopologyCreateNe.ts
@@ -167,38 +167,56 @@ export function useTopologyCreateNe({
   const onManagedFormSaved = useCallback(
     async (item: ManagedNeItem) => {
       setManagedFormOpen(false);
+      void queryClient.invalidateQueries({ queryKey: queryKeys.managedNeAll });
+      void queryClient.invalidateQueries({ queryKey: ["webcrtTargets"] });
       if (!mapId) {
         showOk(t("managedNe.form.created"));
         return;
       }
       const at = placeAtRef.current || { flowX: 80, flowY: 80 };
+      const displayName = item.name || item.ip_address || item.id;
       setManagedBusy(true);
       try {
-        const graph = await addTopologyViewNodes(mapId, {
+        let graph = await addTopologyViewNodes(mapId, {
           managed_ne_ids: [item.id],
           layout: "grid",
         });
         const added = graph.nodes.find((n) => n.managed_ne_id === item.id);
+        let placedAtClick = false;
         if (added?.fabric_node_id) {
-          await patchTopologyPositions(mapId, [
-            {
-              fabric_node_id: added.fabric_node_id,
-              x: at.flowX,
-              y: at.flowY,
-              label: added.label || added.name || item.name || "",
-            },
-          ]);
+          try {
+            await patchTopologyPositions(mapId, [
+              {
+                fabric_node_id: added.fabric_node_id,
+                x: at.flowX,
+                y: at.flowY,
+                label: added.label || added.name || item.name || "",
+              },
+            ]);
+            graph = await fetchTopologyGraph(mapId);
+            placedAtClick = true;
+          } catch {
+            // NE is already on the map; keep grid layout coords.
+          }
         }
-        const refreshed = await fetchTopologyGraph(mapId);
-        applyGraph(refreshed);
+        applyGraph(graph);
         if (added?.fabric_node_id) {
           focusNode(added.fabric_node_id, false);
         }
-        showOk(t("topology.createManagedNeDone").replace("{{name}}", item.name || item.ip_address));
-        void queryClient.invalidateQueries({ queryKey: queryKeys.managedNeAll });
-        void queryClient.invalidateQueries({ queryKey: ["webcrtTargets"] });
+        if (placedAtClick) {
+          showOk(t("topology.createManagedNeDone").replace("{{name}}", displayName));
+        } else if (added?.fabric_node_id) {
+          showError(t("topology.createManagedNePosFailed").replace("{{name}}", displayName));
+        } else {
+          showOk(t("topology.createManagedNeDone").replace("{{name}}", displayName));
+        }
       } catch (err) {
-        showError(String(err));
+        // Inventory already has the NE; placement failed → avoid silent orphan confusion.
+        showError(
+          t("topology.createManagedNePlaceFailed")
+            .replace("{{name}}", displayName)
+            .replace("{{error}}", String(err)),
+        );
       } finally {
         setManagedBusy(false);
       }
diff --git a/web/src/pages/topology/levelTone.ts b/web/src/pages/topology/levelTone.ts
new file mode 100644
index 0000000..f949271
--- /dev/null
+++ b/web/src/pages/topology/levelTone.ts
@@ -0,0 +1,21 @@
+/** Map fabric level/role to a short CSS tone key for canvas chrome. */
+
+export type LevelToneKey = "external" | "core" | "aggregation" | "access" | "edge" | "";
+
+export function levelToneKey(level: number | null | undefined, role?: string | null): LevelToneKey {
+  const r = String(role || "").trim().toLowerCase();
+  if (r === "external" || r === "core" || r === "access" || r === "edge") return r;
+  if (r === "aggregation" || r === "aggregate" || r === "agg") return "aggregation";
+  if (level == null || Number.isNaN(Number(level))) return "";
+  const maj = Math.floor(Number(level));
+  if (maj <= 0) return "external";
+  if (maj === 1) return "core";
+  if (maj === 2) return "aggregation";
+  if (maj === 3) return "access";
+  return "edge";
+}
+
+export function levelLabelKey(tone: LevelToneKey): string {
+  if (!tone) return "topology.levelUnmatched";
+  return `topology.level.${tone}`;
+}
diff --git a/web/src/types.ts b/web/src/types.ts
index 4f51797..32deb2a 100644
--- a/web/src/types.ts
+++ b/web/src/types.ts
@@ -537,6 +537,10 @@ export type TopologyViewNodeItem = {
   device_type: string;
   connect_status: string;
   managed_source?: string;
+  /** Fabric classify rank; smaller = closer to external/WAN. */
+  level?: number | null;
+  /** Synced alias from floor(level): external|core|aggregation|access|edge|"" */
+  role?: string;
   /** ne | region — region drills into a child canvas */
   kind?: string;
   folder_id?: string;