diff --git a/backend/config/routes.js b/backend/config/routes.js
index 4941aea..c991141 100644
--- a/backend/config/routes.js
+++ b/backend/config/routes.js
@@ -105,6 +105,10 @@ const routesConfig = [
     file: 'dangerousOperations.js',
     path: '/api/dangerous-operations',
   },
+  {
+    file: 'topology.js',
+    path: '/api/topology',
+  },
 ];
 
 module.exports = routesConfig;
diff --git a/backend/routes/topology.js b/backend/routes/topology.js
new file mode 100644
index 0000000..7ec9819
--- /dev/null
+++ b/backend/routes/topology.js
@@ -0,0 +1,323 @@
+const express = require('express');
+const router = express.Router();
+const { Op } = require('sequelize');
+const Cable = require('../models/Cable');
+const Device = require('../models/Device');
+const DevicePort = require('../models/DevicePort');
+const Rack = require('../models/Rack');
+const Room = require('../models/Room');
+
+router.get('/switch/:switchId', async (req, res) => {
+  try {
+    const { switchId } = req.params;
+    const { maxNodes = 100 } = req.query;
+
+    const centerDevice = await Device.findByPk(switchId, {
+      include: [
+        {
+          model: Rack,
+          as: 'Rack',
+          include: [{ model: Room, as: 'Room' }]
+        }
+      ]
+    });
+
+    if (!centerDevice) {
+      return res.status(404).json({ success: false, error: '交换机不存在' });
+    }
+
+    if (centerDevice.type !== 'switch') {
+      return res.status(400).json({ success: false, error: '指定设备不是交换机' });
+    }
+
+    const cables = await Cable.findAll({
+      where: {
+        [Op.or]: [
+          { sourceDeviceId: switchId },
+          { targetDeviceId: switchId }
+        ]
+      },
+      include: [
+        {
+          model: Device,
+          as: 'sourceDevice',
+          attributes: ['deviceId', 'name', 'type', 'model', 'status', 'ipAddress', 'rackId', 'position']
+        },
+        {
+          model: Device,
+          as: 'targetDevice',
+          attributes: ['deviceId', 'name', 'type', 'model', 'status', 'ipAddress', 'rackId', 'position']
+        }
+      ]
+    });
+
+    const connectedDeviceIds = new Set();
+    cables.forEach(cable => {
+      if (cable.sourceDeviceId !== switchId) {
+        connectedDeviceIds.add(cable.sourceDeviceId);
+      }
+      if (cable.targetDeviceId !== switchId) {
+        connectedDeviceIds.add(cable.targetDeviceId);
+      }
+    });
+
+    if (connectedDeviceIds.size > parseInt(maxNodes)) {
+      return res.status(400).json({
+        success: false,
+        error: `连接设备数量(${connectedDeviceIds.size})超过限制(${maxNodes})，请使用更具体的筛选条件`
+      });
+    }
+
+    const connectedDevices = await Device.findAll({
+      where: { deviceId: { [Op.in]: Array.from(connectedDeviceIds) } },
+      include: [
+        {
+          model: Rack,
+          as: 'Rack',
+          include: [{ model: Room, as: 'Room' }]
+        }
+      ]
+    });
+
+    const deviceMap = {};
+    connectedDevices.forEach(device => {
+      deviceMap[device.deviceId] = device.toJSON();
+    });
+
+    const centerRack = centerDevice.Rack;
+    const centerRoom = centerRack?.Room;
+
+    const nodes = [
+      {
+        id: centerDevice.deviceId,
+        deviceId: centerDevice.deviceId,
+        name: centerDevice.name,
+        type: centerDevice.type,
+        model: centerDevice.model,
+        status: centerDevice.status,
+        ipAddress: centerDevice.ipAddress,
+        rackId: centerDevice.rackId,
+        rackName: centerRack?.name,
+        roomId: centerRoom?.roomId,
+        roomName: centerRoom?.name,
+        position: centerDevice.position,
+        isCenter: true
+      },
+      ...connectedDevices.map(device => {
+        const d = device.toJSON();
+        const rack = d.Rack;
+        const room = rack?.Room;
+        return {
+          id: d.deviceId,
+          deviceId: d.deviceId,
+          name: d.name,
+          type: d.type,
+          model: d.model,
+          status: d.status,
+          ipAddress: d.ipAddress,
+          rackId: d.rackId,
+          rackName: rack?.name,
+          roomId: room?.roomId,
+          roomName: room?.name,
+          position: d.position,
+          isCenter: false
+        };
+      })
+    ];
+
+    const edges = cables.map(cable => {
+      const sourceId = cable.sourceDeviceId === switchId ? cable.targetDeviceId : cable.sourceDeviceId;
+      return {
+        id: cable.cableId,
+        source: cable.sourceDeviceId,
+        target: cable.targetDeviceId,
+        sourcePort: cable.sourcePort,
+        targetPort: cable.targetPort,
+        cableId: cable.cableId,
+        cableType: cable.cableType,
+        cableLength: cable.cableLength,
+        cableLabel: cable.cableLabel,
+        cableColor: cable.cableColor,
+        status: cable.status,
+        description: cable.description,
+        installedAt: cable.installedAt
+      };
+    });
+
+    const portStats = {};
+    const allDeviceIds = [switchId, ...Array.from(connectedDeviceIds)];
+    const ports = await DevicePort.findAll({
+      where: { deviceId: { [Op.in]: allDeviceIds } },
+      attributes: ['deviceId', 'status']
+    });
+
+    ports.forEach(port => {
+      if (!portStats[port.deviceId]) {
+        portStats[port.deviceId] = { total: 0, used: 0, free: 0, fault: 0 };
+      }
+      portStats[port.deviceId].total++;
+      if (port.status === 'occupied') portStats[port.deviceId].used++;
+      else if (port.status === 'free') portStats[port.deviceId].free++;
+      else if (port.status === 'fault') portStats[port.deviceId].fault++;
+    });
+
+    nodes.forEach(node => {
+      node.portCount = portStats[node.deviceId] || { total: 0, used: 0, free: 0, fault: 0 };
+    });
+
+    const statistics = {
+      totalDevices: nodes.length,
+      totalCables: edges.length,
+      normalCables: edges.filter(e => e.status === 'normal').length,
+      faultCables: edges.filter(e => e.status === 'fault').length,
+      disconnectedCables: edges.filter(e => e.status === 'disconnected').length,
+      byDeviceType: {},
+      byCableType: {}
+    };
+
+    nodes.forEach(node => {
+      statistics.byDeviceType[node.type] = (statistics.byDeviceType[node.type] || 0) + 1;
+    });
+
+    edges.forEach(edge => {
+      statistics.byCableType[edge.cableType] = (statistics.byCableType[edge.cableType] || 0) + 1;
+    });
+
+    res.json({
+      success: true,
+      data: {
+        centerDevice: nodes[0],
+        nodes: nodes.slice(1),
+        edges,
+        statistics
+      }
+    });
+  } catch (error) {
+    console.error('获取拓扑数据失败:', error);
+    res.status(500).json({ success: false, error: error.message });
+  }
+});
+
+router.get('/rack/:rackId', async (req, res) => {
+  try {
+    const { rackId } = req.params;
+    const { maxNodes = 100 } = req.query;
+
+    const devices = await Device.findAll({
+      where: { rackId },
+      attributes: ['deviceId']
+    });
+
+    const deviceIds = devices.map(d => d.deviceId);
+
+    if (deviceIds.length === 0) {
+      return res.json({
+        success: true,
+        data: {
+          nodes: [],
+          edges: [],
+          statistics: {
+            totalDevices: 0,
+            totalCables: 0,
+            normalCables: 0,
+            faultCables: 0,
+            disconnectedCables: 0
+          }
+        }
+      });
+    }
+
+    const cables = await Cable.findAll({
+      where: {
+        [Op.or]: [
+          { sourceDeviceId: { [Op.in]: deviceIds } },
+          { targetDeviceId: { [Op.in]: deviceIds } }
+        ]
+      },
+      include: [
+        {
+          model: Device,
+          as: 'sourceDevice',
+          attributes: ['deviceId', 'name', 'type', 'model', 'status', 'ipAddress', 'rackId', 'position']
+        },
+        {
+          model: Device,
+          as: 'targetDevice',
+          attributes: ['deviceId', 'name', 'type', 'model', 'status', 'ipAddress', 'rackId', 'position']
+        }
+      ]
+    });
+
+    const relatedDeviceIds = new Set(deviceIds);
+    cables.forEach(cable => {
+      relatedDeviceIds.add(cable.sourceDeviceId);
+      relatedDeviceIds.add(cable.targetDeviceId);
+    });
+
+    if (relatedDeviceIds.size > parseInt(maxNodes)) {
+      return res.status(400).json({
+        success: false,
+        error: `设备数量(${relatedDeviceIds.size})超过限制(${maxNodes})`
+      });
+    }
+
+    const allDevices = await Device.findAll({
+      where: { deviceId: { [Op.in]: Array.from(relatedDeviceIds) } },
+      include: [
+        {
+          model: Rack,
+          as: 'Rack',
+          include: [{ model: Room, as: 'Room' }]
+        }
+      ]
+    });
+
+    const nodes = allDevices.map(device => {
+      const d = device.toJSON();
+      const rack = d.Rack;
+      const room = rack?.Room;
+      return {
+        id: d.deviceId,
+        deviceId: d.deviceId,
+        name: d.name,
+        type: d.type,
+        model: d.model,
+        status: d.status,
+        ipAddress: d.ipAddress,
+        rackId: d.rackId,
+        rackName: rack?.name,
+        roomId: room?.roomId,
+        roomName: room?.name,
+        position: d.position,
+        isCenter: deviceIds.includes(d.deviceId)
+      };
+    });
+
+    const edges = cables.map(cable => ({
+      id: cable.cableId,
+      source: cable.sourceDeviceId,
+      target: cable.targetDeviceId,
+      sourcePort: cable.sourcePort,
+      targetPort: cable.targetPort,
+      cableId: cable.cableId,
+      cableType: cable.cableType,
+      cableLength: cable.cableLength,
+      status: cable.status
+    }));
+
+    const statistics = {
+      totalDevices: nodes.length,
+      totalCables: edges.length,
+      normalCables: edges.filter(e => e.status === 'normal').length,
+      faultCables: edges.filter(e => e.status === 'fault').length,
+      disconnectedCables: edges.filter(e => e.status === 'disconnected').length
+    };
+
+    res.json({ success: true, data: { nodes, edges, statistics } });
+  } catch (error) {
+    console.error('获取机柜拓扑数据失败:', error);
+    res.status(500).json({ success: false, error: error.message });
+  }
+});
+
+module.exports = router;
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index b6411b8..565b034 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -11,8 +11,10 @@
         "@ant-design/icons": "^6.1.0",
         "@react-three/drei": "^9.122.0",
         "@react-three/fiber": "^8.18.0",
+        "@types/dagre": "^0.7.54",
         "antd": "^5.8.6",
         "axios": "^1.13.6",
+        "dagre": "^0.8.5",
         "dayjs": "^1.11.19",
         "framer-motion": "^12.34.0",
         "html2canvas": "^1.4.1",
@@ -2823,6 +2825,12 @@
         "@types/d3-selection": "*"
       }
     },
+    "node_modules/@types/dagre": {
+      "version": "0.7.54",
+      "resolved": "https://registry.npmjs.org/@types/dagre/-/dagre-0.7.54.tgz",
+      "integrity": "sha512-QjcRY+adGbYvBFS7cwv5txhVIwX1XXIUswWl+kSQTbI6NjgZydrZkEKX/etzVd7i+bCsCb40Z/xlBY5eoFuvWQ==",
+      "license": "MIT"
+    },
     "node_modules/@types/deep-eql": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/@types/deep-eql/-/deep-eql-4.0.2.tgz",
@@ -4172,6 +4180,16 @@
         "node": ">=12"
       }
     },
+    "node_modules/dagre": {
+      "version": "0.8.5",
+      "resolved": "https://registry.npmjs.org/dagre/-/dagre-0.8.5.tgz",
+      "integrity": "sha512-/aTqmnRta7x7MCCpExk7HQL2O4owCT2h8NT//9I1OQ9vt29Pa0BzSAkR5lwFUcQ7491yVi/3CXU9jQ5o0Mn2Sw==",
+      "license": "MIT",
+      "dependencies": {
+        "graphlib": "^2.1.8",
+        "lodash": "^4.17.15"
+      }
+    },
     "node_modules/data-urls": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/data-urls/-/data-urls-6.0.0.tgz",
@@ -5328,6 +5346,15 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/graphlib": {
+      "version": "2.1.8",
+      "resolved": "https://registry.npmjs.org/graphlib/-/graphlib-2.1.8.tgz",
+      "integrity": "sha512-jcLLfkpoVGmH7/InMC/1hIvOPSUh38oJtGhvrOFGzioE1DZ+0YW16RgmOJhHiuWTvGiJQ9Z1Ik43JvkRPRvE+A==",
+      "license": "MIT",
+      "dependencies": {
+        "lodash": "^4.17.15"
+      }
+    },
     "node_modules/has-bigints": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/has-bigints/-/has-bigints-1.1.0.tgz",
@@ -6249,6 +6276,12 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/lodash": {
+      "version": "4.18.1",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.18.1.tgz",
+      "integrity": "sha512-dMInicTPVE8d1e5otfwmmjlxkZoUpiVLwyeTdUsi/Caj/gfzzblBcCE5sRHV/AsjuCmxWrte2TNGSYuCeCq+0Q==",
+      "license": "MIT"
+    },
     "node_modules/lodash.merge": {
       "version": "4.6.2",
       "resolved": "https://registry.npmjs.org/lodash.merge/-/lodash.merge-4.6.2.tgz",
diff --git a/frontend/package.json b/frontend/package.json
index b715f8b..cd36079 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -16,8 +16,10 @@
     "@ant-design/icons": "^6.1.0",
     "@react-three/drei": "^9.122.0",
     "@react-three/fiber": "^8.18.0",
+    "@types/dagre": "^0.7.54",
     "antd": "^5.8.6",
     "axios": "^1.13.6",
+    "dagre": "^0.8.5",
     "dayjs": "^1.11.19",
     "framer-motion": "^12.34.0",
     "html2canvas": "^1.4.1",
diff --git a/frontend/public/png/交换机.png b/frontend/public/png/交换机.png
new file mode 100644
index 0000000..9de9a0a
Binary files /dev/null and b/frontend/public/png/交换机.png differ
diff --git a/frontend/public/png/服务器.png b/frontend/public/png/服务器.png
new file mode 100644
index 0000000..7613a29
Binary files /dev/null and b/frontend/public/png/服务器.png differ
diff --git a/frontend/public/png/路由器.png b/frontend/public/png/路由器.png
new file mode 100644
index 0000000..3a3c9f6
Binary files /dev/null and b/frontend/public/png/路由器.png differ
diff --git a/frontend/public/png/防火墙.png b/frontend/public/png/防火墙.png
new file mode 100644
index 0000000..baa33b1
Binary files /dev/null and b/frontend/public/png/防火墙.png differ
diff --git a/frontend/src/components/CableWizardModal.jsx b/frontend/src/components/CableWizardModal.jsx
index de39a1a..b639941 100644
--- a/frontend/src/components/CableWizardModal.jsx
+++ b/frontend/src/components/CableWizardModal.jsx
@@ -189,7 +189,6 @@ const CableWizardModal = ({ visible, onClose, onSuccess, initialSourceDevice, ed
   useEffect(() => {
     if (visible) {
       setCurrentStep(0);
-      setSourceDevice(null);
       setTargetDevice(null);
       setSourcePort(null);
       setTargetPort(null);
@@ -197,22 +196,30 @@ const CableWizardModal = ({ visible, onClose, onSuccess, initialSourceDevice, ed
       setSelectedCableLength(3);
       setCableLabel('');
       setCableDescription('');
-      setSourcePorts([]);
       setTargetPorts([]);
       setConflicts([]);
       setCompatibilityWarning(null);
-      setDevices([]);
       setCablesData([]);
 
-      fetchDevices('', 'switch').then(deviceList => {
-        if (initialSourceDevice?.deviceId) {
-          const device = deviceList.find(d => d.deviceId === initialSourceDevice.deviceId);
-          if (device) {
-            setSourceDevice(device);
-            fetchDevicePorts(device.deviceId, 'source');
-          }
-        }
-      });
+      if (initialSourceDevice?.deviceId) {
+        const deviceWithId = {
+          deviceId: initialSourceDevice.deviceId,
+          name: initialSourceDevice.name || initialSourceDevice.deviceId,
+          type: initialSourceDevice.type || 'switch',
+          model: initialSourceDevice.model,
+          status: initialSourceDevice.status,
+          Rack: initialSourceDevice.Rack,
+          ipAddress: initialSourceDevice.ipAddress,
+          position: initialSourceDevice.position,
+        };
+        setSourceDevice(deviceWithId);
+        fetchDevicePorts(deviceWithId.deviceId, 'source');
+        fetchDevices('', 'switch');
+      } else {
+        setSourceDevice(null);
+        setSourcePorts([]);
+        fetchDevices('', 'switch');
+      }
       fetchCables();
     }
   }, [visible, initialSourceDevice, fetchDevices, fetchDevicePorts, fetchCables]);
@@ -677,152 +684,165 @@ const Step1SourceDevice = ({
   onPortSelect,
   onDevicesChange,
 }) => {
+  const isSourcePreSelected = !!sourceDevice;
+
   return (
     <div style={{ padding: '20px 0' }}>
       <Card
         title={
           <Space>
             <CloudServerOutlined style={{ color: '#1890ff' }} />
-            <span>步骤 1: 选择源设备</span>
+            <span>步骤 1: 选择源设备端口</span>
           </Space>
         }
         size="small"
         style={{ marginBottom: '20px' }}
       >
-        <div style={{ marginBottom: '16px' }}>
-          <Typography.Text type="secondary" style={{ fontSize: '13px' }}>
-            选择接线的起点设备
-          </Typography.Text>
-        </div>
-
-        <div style={{ marginBottom: '16px' }}>
-          <FilterableDeviceSelect
-            filterType="switch"
-            onDeviceListChange={onDevicesChange}
-          />
-        </div>
-
-        <div
-          style={{
-            display: 'grid',
-            gridTemplateColumns: 'repeat(auto-fill, minmax(280px, 1fr))',
-            gap: '12px',
-            maxHeight: 300,
-            overflowY: 'auto',
-            padding: '8px',
-            background: designTokens.colors.background,
-            borderRadius: '8px',
-          }}
-        >
-          {fetchingDevices ? (
-            <div style={{ textAlign: 'center', padding: '40px', gridColumn: '1 / -1' }}>
-              <Spin size="large" />
+        {!isSourcePreSelected && (
+          <>
+            <div style={{ marginBottom: '16px' }}>
+              <Typography.Text type="secondary" style={{ fontSize: '13px' }}>
+                选择接线的起点设备
+              </Typography.Text>
             </div>
-          ) : (
-            devices.map(device => (
-              <motion.div
-                key={device.deviceId}
-                whileHover={{ scale: 1.02 }}
-                whileTap={{ scale: 0.98 }}
-              >
-                <Card
-                  onClick={() => onDeviceSelect(device)}
-                  hoverable
-                  style={{
-                    border: sourceDevice?.deviceId === device.deviceId
-                      ? `2px solid ${designTokens.colors.primary}`
-                      : '1px solid #d9d9d9',
-                    background: sourceDevice?.deviceId === device.deviceId
-                      ? 'rgba(24,144,255,0.08)'
-                      : '#fff',
-                  }}
-                >
-                  <div style={{ display: 'flex', alignItems: 'flex-start', gap: '12px' }}>
-                    <div
+
+            <div style={{ marginBottom: '16px' }}>
+              <FilterableDeviceSelect
+                filterType="switch"
+                onDeviceListChange={onDevicesChange}
+              />
+            </div>
+
+            <div
+              style={{
+                display: 'grid',
+                gridTemplateColumns: 'repeat(auto-fill, minmax(280px, 1fr))',
+                gap: '12px',
+                maxHeight: 300,
+                overflowY: 'auto',
+                padding: '8px',
+                background: designTokens.colors.background,
+                borderRadius: '8px',
+              }}
+            >
+              {fetchingDevices ? (
+                <div style={{ textAlign: 'center', padding: '40px', gridColumn: '1 / -1' }}>
+                  <Spin size="large" />
+                </div>
+              ) : (
+                devices.map(device => (
+                  <motion.div
+                    key={device.deviceId}
+                    whileHover={{ scale: 1.02 }}
+                    whileTap={{ scale: 0.98 }}
+                  >
+                    <Card
+                      onClick={() => onDeviceSelect(device)}
+                      hoverable
                       style={{
-                        width: '48px',
-                        height: '48px',
-                        borderRadius: '10px',
-                        background: 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)',
-                        display: 'flex',
-                        alignItems: 'center',
-                        justifyContent: 'center',
-                        fontSize: '24px',
-                        flexShrink: 0,
+                        border: sourceDevice?.deviceId === device.deviceId
+                          ? `2px solid ${designTokens.colors.primary}`
+                          : '1px solid #d9d9d9',
+                        background: sourceDevice?.deviceId === device.deviceId
+                          ? 'rgba(24,144,255,0.08)'
+                          : '#fff',
                       }}
                     >
-                      {device.type === 'server' ? '🖥️' : device.type === 'switch' ? '📡' : device.type === 'router' ? '🔀' : device.type === 'storage' ? '💾' : '📦'}
-                    </div>
-                    <div style={{ flex: 1, minWidth: 0 }}>
-                      <div style={{ display: 'flex', alignItems: 'center', gap: '8px', marginBottom: '6px' }}>
-                        <div style={{ fontWeight: 600, color: '#262626', fontSize: '15px' }}>
-                          {device.name || device.deviceId}
+                      <div style={{ display: 'flex', alignItems: 'flex-start', gap: '12px' }}>
+                        <div
+                          style={{
+                            width: '48px',
+                            height: '48px',
+                            borderRadius: '10px',
+                            background: 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)',
+                            display: 'flex',
+                            alignItems: 'center',
+                            justifyContent: 'center',
+                            fontSize: '24px',
+                            flexShrink: 0,
+                          }}
+                        >
+                          {device.type === 'server' ? '🖥️' : device.type === 'switch' ? '📡' : device.type === 'router' ? '🔀' : device.type === 'storage' ? '💾' : '📦'}
                         </div>
-                        {device.status && getStatusTag(device.status)}
-                      </div>
-                      <div style={{ fontSize: '12px', color: '#8c8c8c', marginBottom: '4px' }}>
-                        <span style={{ marginRight: '12px' }}>
-                          <span style={{ color: '#bfbfbf', marginRight: '4px' }}>ID:</span>
-                          {device.deviceId}
-                        </span>
-                        <span>
-                          <span style={{ color: '#bfbfbf', marginRight: '4px' }}>类型:</span>
-                          {device.type === 'server' ? '服务器' : device.type === 'switch' ? '交换机' : device.type === 'router' ? '路由器' : device.type === 'storage' ? '存储设备' : device.type}
-                        </span>
-                      </div>
-                      <div style={{ fontSize: '11px', color: '#8c8c8c', lineHeight: '1.5' }}>
-                        {device.Rack?.Room?.name && (
-                          <span style={{ marginRight: '12px' }}>
-                            <span style={{ color: '#bfbfbf', marginRight: '4px' }}>机房:</span>
-                            {device.Rack.Room.name}
-                          </span>
-                        )}
-                        {device.Rack?.name && (
-                          <span style={{ marginRight: '12px' }}>
-                            <span style={{ color: '#bfbfbf', marginRight: '4px' }}>机柜:</span>
-                            {device.Rack.name}
-                          </span>
-                        )}
-                        {device.position && (
-                          <span style={{ marginRight: '12px' }}>
-                            <span style={{ color: '#bfbfbf', marginRight: '4px' }}>U位:</span>
-                            U{device.position}
-                          </span>
-                        )}
-                        {device.ipAddress && (
-                          <span>
-                            <span style={{ color: '#bfbfbf', marginRight: '4px' }}>IP:</span>
-                            {device.ipAddress}
-                          </span>
-                        )}
-                      </div>
-                      {device.model && (
-                        <div style={{ fontSize: '11px', color: '#bfbfbf', marginTop: '4px' }}>
-                          <span style={{ color: '#8c8c8c', marginRight: '4px' }}>型号:</span>
-                          {device.model}
+                        <div style={{ flex: 1, minWidth: 0 }}>
+                          <div style={{ display: 'flex', alignItems: 'center', gap: '8px', marginBottom: '6px' }}>
+                            <div style={{ fontWeight: 600, color: '#262626', fontSize: '15px' }}>
+                              {device.name || device.deviceId}
+                            </div>
+                            {device.status && getStatusTag(device.status)}
+                          </div>
+                          <div style={{ fontSize: '12px', color: '#8c8c8c', marginBottom: '4px' }}>
+                            <span style={{ marginRight: '12px' }}>
+                              <span style={{ color: '#bfbfbf', marginRight: '4px' }}>ID:</span>
+                              {device.deviceId}
+                            </span>
+                            <span>
+                              <span style={{ color: '#bfbfbf', marginRight: '4px' }}>类型:</span>
+                              {device.type === 'server' ? '服务器' : device.type === 'switch' ? '交换机' : device.type === 'router' ? '路由器' : device.type === 'storage' ? '存储设备' : device.type}
+                            </span>
+                          </div>
+                          <div style={{ fontSize: '11px', color: '#8c8c8c', lineHeight: '1.5' }}>
+                            {device.Rack?.Room?.name && (
+                              <span style={{ marginRight: '12px' }}>
+                                <span style={{ color: '#bfbfbf', marginRight: '4px' }}>机房:</span>
+                                {device.Rack.Room.name}
+                              </span>
+                            )}
+                            {device.Rack?.name && (
+                              <span style={{ marginRight: '12px' }}>
+                                <span style={{ color: '#bfbfbf', marginRight: '4px' }}>机柜:</span>
+                                {device.Rack.name}
+                              </span>
+                            )}
+                            {device.position && (
+                              <span style={{ marginRight: '12px' }}>
+                                <span style={{ color: '#bfbfbf', marginRight: '4px' }}>U位:</span>
+                                U{device.position}
+                              </span>
+                            )}
+                            {device.ipAddress && (
+                              <span>
+                                <span style={{ color: '#bfbfbf', marginRight: '4px' }}>IP:</span>
+                                {device.ipAddress}
+                              </span>
+                            )}
+                          </div>
+                          {device.model && (
+                            <div style={{ fontSize: '11px', color: '#bfbfbf', marginTop: '4px' }}>
+                              <span style={{ color: '#8c8c8c', marginRight: '4px' }}>型号:</span>
+                              {device.model}
+                            </div>
+                          )}
                         </div>
-                      )}
-                    </div>
-                    {sourceDevice?.deviceId === device.deviceId && (
-                      <CheckCircleOutlined style={{ color: designTokens.colors.primary, fontSize: '22px', flexShrink: 0 }} />
-                    )}
-                  </div>
-                </Card>
-              </motion.div>
-            ))
-          )}
-        </div>
+                        {sourceDevice?.deviceId === device.deviceId && (
+                          <CheckCircleOutlined style={{ color: designTokens.colors.primary, fontSize: '22px', flexShrink: 0 }} />
+                        )}
+                      </div>
+                    </Card>
+                  </motion.div>
+                ))
+              )}
+            </div>
+          </>
+        )}
 
         {sourceDevice && (
           <motion.div
             initial={{ opacity: 0, height: 0 }}
             animate={{ opacity: 1, height: 'auto' }}
-            style={{ marginTop: '20px' }}
+            style={{ marginTop: isSourcePreSelected ? 0 : '20px' }}
           >
-            <div style={{ marginBottom: '12px' }}>
+            <div style={{ marginBottom: '12px', display: 'flex', alignItems: 'center', gap: '8px' }}>
+              <DatabaseOutlined style={{ color: '#1890ff' }} />
               <Typography.Text style={{ fontWeight: 600, color: '#262626' }}>
-                源设备已选择: {sourceDevice.name}
+                源设备: {sourceDevice.name}
               </Typography.Text>
+              {isSourcePreSelected && (
+                <Tag color="blue" style={{ marginLeft: '8px' }}>已选择</Tag>
+              )}
+              <Tag color="blue" style={{ marginLeft: 'auto' }}>
+                {sourcePorts.filter(p => p.status === 'free').length} 个空闲端口
+              </Tag>
             </div>
 
             <div
@@ -833,14 +853,6 @@ const Step1SourceDevice = ({
                 border: '1px solid #d9d9d9',
               }}
             >
-              <div style={{ marginBottom: '12px', display: 'flex', alignItems: 'center', gap: '8px' }}>
-                <DatabaseOutlined style={{ color: '#1890ff' }} />
-                <Typography.Text style={{ fontWeight: 600 }}>端口选择</Typography.Text>
-                <Tag color="blue" style={{ marginLeft: 'auto' }}>
-                  {sourcePorts.filter(p => p.status === 'free').length} 个空闲端口
-                </Tag>
-              </div>
-
               {sourcePorts.length === 0 ? (
                 <Empty description="该设备暂无端口数据" />
               ) : (
@@ -848,9 +860,6 @@ const Step1SourceDevice = ({
                   <div style={{ marginBottom: '8px', fontSize: '12px', color: '#8c8c8c' }}>
                     端口总数: {sourcePorts.length} | 空闲端口: {sourcePorts.filter(p => p.status === 'free').length}
                   </div>
-                  <div style={{ marginBottom: '8px', fontSize: '11px', color: '#bfbfbf' }}>
-                    端口状态分布: {sourcePorts.map(p => p.status).filter((v, i, a) => a.indexOf(v) === i).join(', ')}
-                  </div>
                   {sourcePort && (
                     <div
                       style={{
diff --git a/frontend/src/components/PortCreateModal.jsx b/frontend/src/components/PortCreateModal.jsx
index 9dd298d..83d7da2 100644
--- a/frontend/src/components/PortCreateModal.jsx
+++ b/frontend/src/components/PortCreateModal.jsx
@@ -62,7 +62,8 @@ function parsePortRange(portName) {
     return null;
   }
 
-  const prefix = startPart.replace(startNumMatch[0], '');
+  const startIdx = startPart.length - startNumMatch[0].length;
+  const prefix = startPart.substring(0, startIdx);
   const portCount = endNum - startNum + 1;
 
   const ports = [];
diff --git a/frontend/src/components/topology/TopologyControls.jsx b/frontend/src/components/topology/TopologyControls.jsx
new file mode 100644
index 0000000..fe93f1a
--- /dev/null
+++ b/frontend/src/components/topology/TopologyControls.jsx
@@ -0,0 +1,93 @@
+import React from 'react';
+import { Card, Select, Space, Button, Row, Col, Statistic, Tag, Typography } from 'antd';
+import {
+  ReloadOutlined,
+  AppstoreOutlined
+} from '@ant-design/icons';
+
+const { Text } = Typography;
+const { Option } = Select;
+
+function TopologyControls({
+  switchDevices,
+  selectedSwitchId,
+  onSwitchChange,
+  loading,
+  onRefresh,
+  statistics
+}) {
+  return (
+    <Card
+      size="small"
+      title={
+        <Space>
+          <AppstoreOutlined />
+          <span>选择交换机</span>
+        </Space>
+      }
+      extra={
+        <Button
+          type="text"
+          icon={<ReloadOutlined />}
+          onClick={onRefresh}
+          loading={loading}
+          size="small"
+        />
+      }
+      style={{ marginBottom: 16, borderRadius: 8 }}
+      bodyStyle={{ padding: 16 }}
+    >
+      <Select
+        placeholder="搜索并选择交换机..."
+        value={selectedSwitchId || undefined}
+        onChange={onSwitchChange}
+        style={{ width: '100%', marginBottom: 16 }}
+        allowClear
+        showSearch
+        filterOption={(input, option) =>
+          option.label?.toLowerCase().includes(input.toLowerCase()) ?? true
+        }
+      >
+        {switchDevices.map(device => (
+          <Option key={device.deviceId} value={device.deviceId} label={device.name}>
+            <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
+              <span>{device.name}</span>
+              <Text type="secondary" style={{ fontSize: 11 }}>{device.deviceId}</Text>
+            </div>
+          </Option>
+        ))}
+      </Select>
+
+      {statistics && (
+        <div style={{ marginTop: 16, paddingTop: 16, borderTop: '1px solid #f0f0f0' }}>
+          <Row gutter={[8, 8]}>
+            <Col span={12}>
+              <Statistic
+                title="设备数"
+                value={statistics.totalDevices || 0}
+                valueStyle={{ fontSize: 18 }}
+              />
+            </Col>
+            <Col span={12}>
+              <Statistic
+                title="连接数"
+                value={statistics.totalCables || 0}
+                valueStyle={{ fontSize: 18 }}
+              />
+            </Col>
+          </Row>
+          <div style={{ marginTop: 12 }}>
+            <Text type="secondary" style={{ fontSize: 12 }}>连接状态：</Text>
+            <Space size={4} style={{ marginTop: 4 }}>
+              <Tag color="success" style={{ fontSize: 11 }}>{statistics.normalCables || 0} 正常</Tag>
+              <Tag color="error" style={{ fontSize: 11 }}>{statistics.faultCables || 0} 故障</Tag>
+              <Tag style={{ fontSize: 11 }}>{statistics.disconnectedCables || 0} 未连接</Tag>
+            </Space>
+          </div>
+        </div>
+      )}
+    </Card>
+  );
+}
+
+export default TopologyControls;
diff --git a/frontend/src/components/topology/TopologyGraph.jsx b/frontend/src/components/topology/TopologyGraph.jsx
new file mode 100644
index 0000000..b60c057
--- /dev/null
+++ b/frontend/src/components/topology/TopologyGraph.jsx
@@ -0,0 +1,264 @@
+import React, { useCallback, useState, useEffect, useRef } from 'react';
+import {
+  ReactFlow,
+  Background,
+  Controls,
+  MiniMap,
+  useNodesState,
+  useEdgesState,
+  Handle,
+  Position
+} from 'reactflow';
+import 'reactflow/dist/style.css';
+import { Card, Tag, Badge, Typography } from 'antd';
+import {
+  CloudServerOutlined,
+  AppstoreOutlined,
+  DatabaseOutlined,
+  SwapOutlined,
+  SafetyOutlined
+} from '@ant-design/icons';
+import { SwitchNode, ServerNode, RouterNode, StorageNode, GenericNode, FirewallNode } from './nodes';
+
+const { Text: AntText } = Typography;
+
+const DEVICE_COLORS = {
+  switch: '#1890ff',
+  router: '#722ed1',
+  server: '#52c41a',
+  storage: '#fa8c16',
+  firewall: '#eb595a',
+  default: '#8c8c8c'
+};
+
+const DEVICE_ICONS = {
+  switch: AppstoreOutlined,
+  router: SwapOutlined,
+  server: CloudServerOutlined,
+  storage: DatabaseOutlined,
+  firewall: SafetyOutlined,
+  default: CloudServerOutlined
+};
+
+const CABLE_COLORS = {
+  ethernet: '#1890ff',
+  fiber: '#13c2c2',
+  copper: '#fa8c16'
+};
+
+const STATUS_COLORS = {
+  online: '#52c41a',
+  offline: '#d9d9d9',
+  fault: '#ff4d4f',
+  warning: '#faad14'
+};
+
+function DeviceNode({ data }) {
+  if (!data) {
+    return (
+      <Card size="small" style={{ width: 180 }}>
+        <AntText type="secondary">无数据</AntText>
+      </Card>
+    );
+  }
+
+  const nodeType = data.type || 'default';
+
+  return (
+    <>
+      <Handle type="target" position={Position.Left} style={{ background: '#555', width: 8, height: 8 }} />
+      {nodeType === 'switch' && <SwitchNode data={data} />}
+      {nodeType === 'server' && <ServerNode data={data} />}
+      {nodeType === 'router' && <RouterNode data={data} />}
+      {nodeType === 'storage' && <StorageNode data={data} />}
+      {nodeType === 'firewall' && <FirewallNode data={data} />}
+      {(nodeType === 'default' || !['switch', 'server', 'router', 'storage', 'firewall'].includes(nodeType)) && <GenericNode data={data} />}
+      <Handle type="source" position={Position.Right} style={{ background: '#555', width: 8, height: 8 }} />
+    </>
+  );
+}
+
+const nodeTypes = {
+  device: DeviceNode
+};
+
+function TopologyGraph({ nodes, edges, onNodeClick, onEdgeClick, selectedNode, selectedEdge }) {
+  const [flowNodes, setFlowNodes, onNodesChange] = useNodesState([]);
+  const [flowEdges, setFlowEdges, onEdgesChange] = useEdgesState([]);
+  const [hoveredNodeId, setHoveredNodeId] = useState(null);
+  const initializedRef = useRef(false);
+
+  useEffect(() => {
+    if (!nodes || nodes.length === 0) return;
+
+    setFlowNodes(prevNodes => {
+      const newNodes = nodes.map(node => {
+        const existingNode = prevNodes.find(n => n.id === node.id);
+        const position = existingNode?.position || node.position || { x: Math.random() * 400, y: Math.random() * 300 };
+
+        return {
+          id: node.id,
+          type: 'device',
+          position,
+          data: {
+            ...node,
+            selected: selectedNode?.id === node.id,
+            hovered: hoveredNodeId === node.id
+          },
+          selected: selectedNode?.id === node.id
+        };
+      });
+      return newNodes;
+    });
+    initializedRef.current = true;
+  }, [nodes, selectedNode, hoveredNodeId]);
+
+  useEffect(() => {
+    if (!edges || edges.length === 0) return;
+
+    setFlowEdges(edges.map(edge => ({
+      id: edge.id,
+      source: edge.source,
+      target: edge.target,
+      type: 'default',
+      animated: edge.status === 'fault',
+      style: {
+        stroke: edge.status === 'fault' ? '#ff4d4f' :
+                edge.status === 'disconnected' ? '#d9d9d9' :
+                CABLE_COLORS[edge.cableType] || '#8c8c8c',
+        strokeWidth: edge.status === 'fault' ? 3 : 2,
+        strokeDasharray: edge.status === 'disconnected' ? '5,5' : '0',
+      },
+      data: edge,
+      selected: selectedEdge?.id === edge.id
+    })));
+  }, [edges, selectedEdge]);
+
+  const onNodeClickHandler = useCallback((event, node) => {
+    if (onNodeClick) {
+      onNodeClick(node);
+    }
+  }, [onNodeClick]);
+
+  const onEdgeClickHandler = useCallback((event, edge) => {
+    if (onEdgeClick) {
+      onEdgeClick(edge);
+    }
+  }, [onEdgeClick]);
+
+  const onNodeMouseEnterHandler = useCallback((event, node) => {
+    setHoveredNodeId(node.id);
+  }, []);
+
+  const onNodeMouseLeaveHandler = useCallback(() => {
+    setHoveredNodeId(null);
+  }, []);
+
+  if (!nodes || nodes.length === 0) {
+    return (
+      <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', height: '100%' }}>
+        <AntText type="secondary">暂无拓扑数据</AntText>
+      </div>
+    );
+  }
+
+  return (
+    <ReactFlow
+      nodes={flowNodes}
+      edges={flowEdges}
+      onNodesChange={onNodesChange}
+      onEdgesChange={onEdgesChange}
+      onNodeClick={onNodeClickHandler}
+      onEdgeClick={onEdgeClickHandler}
+      onNodeMouseEnter={onNodeMouseEnterHandler}
+      onNodeMouseLeave={onNodeMouseLeaveHandler}
+      nodeTypes={nodeTypes}
+      fitView
+      attributionPosition="bottom-left"
+      style={{ background: '#fafafa' }}
+      defaultEdgeOptions={{
+        type: 'default',
+        animated: false
+      }}
+    >
+      <Background color="#e0e0e0" gap={20} />
+      <Controls
+        showZoom={true}
+        showFitView={true}
+        showInteractive={false}
+      />
+      <MiniMap
+        nodeColor={(node) => {
+          const type = node.data?.type;
+          switch (type) {
+            case 'switch': return '#1890ff';
+            case 'router': return '#722ed1';
+            case 'server': return '#52c41a';
+            case 'storage': return '#fa8c16';
+            case 'firewall': return '#eb595a';
+            default: return '#8c8c8c';
+          }
+        }}
+        maskColor="rgba(0,0,0,0.1)"
+        style={{ border: '1px solid #e0e0e0', borderRadius: 8 }}
+      />
+
+      <div style={{
+        position: 'absolute',
+        bottom: 20,
+        left: 20,
+        background: 'rgba(255,255,255,0.9)',
+        padding: '12px 16px',
+        borderRadius: 8,
+        border: '1px solid #e0e0e0',
+        fontSize: 12,
+        zIndex: 5
+      }}>
+        <div style={{ marginBottom: 8, fontWeight: 600, color: '#262626' }}>设备类型</div>
+        <div style={{ display: 'flex', gap: 12, flexWrap: 'wrap' }}>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+            <div style={{ width: 12, height: 12, background: '#1890ff', borderRadius: 2 }} />
+            <span>交换机</span>
+          </div>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+            <div style={{ width: 12, height: 12, background: '#722ed1', borderRadius: 2 }} />
+            <span>路由器</span>
+          </div>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+            <div style={{ width: 12, height: 12, background: '#52c41a', borderRadius: 2 }} />
+            <span>服务器</span>
+          </div>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+            <div style={{ width: 12, height: 12, background: '#fa8c16', borderRadius: 2 }} />
+            <span>存储</span>
+          </div>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+            <div style={{ width: 12, height: 12, background: '#eb595a', borderRadius: 2 }} />
+            <span>防火墙</span>
+          </div>
+        </div>
+        <div style={{ marginTop: 8, marginBottom: 4, fontWeight: 600, color: '#262626' }}>线缆类型</div>
+        <div style={{ display: 'flex', gap: 12, flexWrap: 'wrap' }}>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+            <div style={{ width: 20, height: 2, background: '#1890ff' }} />
+            <span>网线</span>
+          </div>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+            <div style={{ width: 20, height: 2, background: '#13c2c2' }} />
+            <span>光纤</span>
+          </div>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+            <div style={{ width: 20, height: 2, background: '#fa8c16' }} />
+            <span>铜缆</span>
+          </div>
+          <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+            <div style={{ width: 20, height: 2, background: '#ff4d4f', borderStyle: 'dashed' }} />
+            <span>故障</span>
+          </div>
+        </div>
+      </div>
+    </ReactFlow>
+  );
+}
+
+export default TopologyGraph;
diff --git a/frontend/src/components/topology/TopologyModal.jsx b/frontend/src/components/topology/TopologyModal.jsx
new file mode 100644
index 0000000..b162ea4
--- /dev/null
+++ b/frontend/src/components/topology/TopologyModal.jsx
@@ -0,0 +1,227 @@
+import React, { useState, useEffect, useCallback } from 'react';
+import { Modal, Spin, message, Alert, Space } from 'antd';
+import {
+  SwapOutlined,
+  CloudServerOutlined
+} from '@ant-design/icons';
+import axios from 'axios';
+import { motion } from 'framer-motion';
+import { designTokens } from '../../config/theme';
+import TopologyGraph from './TopologyGraph';
+import TopologySidebar from './TopologySidebar';
+import TopologyControls from './TopologyControls';
+import { useTopologyLayout } from './hooks/useTopologyLayout';
+
+function TopologyModal({ visible, onClose }) {
+  const [switchDevices, setSwitchDevices] = useState([]);
+  const [selectedSwitchId, setSelectedSwitchId] = useState(null);
+  const [topologyData, setTopologyData] = useState(null);
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState(null);
+  const [selectedNode, setSelectedNode] = useState(null);
+  const [selectedEdge, setSelectedEdge] = useState(null);
+  const [sidebarVisible, setSidebarVisible] = useState(false);
+
+  const { calculateLayout } = useTopologyLayout();
+
+  const fetchSwitchDevices = useCallback(async () => {
+    try {
+      const response = await axios.get('/api/devices/all', {
+        params: { pageSize: 50000, type: 'switch' }
+      });
+      setSwitchDevices(response.data.devices || []);
+    } catch (err) {
+      console.error('获取交换机列表失败:', err);
+    }
+  }, []);
+
+  useEffect(() => {
+    if (visible) {
+      fetchSwitchDevices();
+    }
+  }, [visible, fetchSwitchDevices]);
+
+  const handleSwitchChange = useCallback(async (switchId) => {
+    setSelectedSwitchId(switchId);
+    setSelectedNode(null);
+    setSelectedEdge(null);
+    setTopologyData(null);
+    setError(null);
+
+    if (!switchId) return;
+
+    try {
+      setLoading(true);
+      const response = await axios.get(`/api/topology/switch/${switchId}`, {
+        params: { maxNodes: 100 }
+      });
+
+      if (response.data.success) {
+        setTopologyData(response.data.data);
+      } else {
+        setError(response.data.error || '获取拓扑数据失败');
+      }
+    } catch (err) {
+      const errorMessage = err.response?.data?.error || '获取拓扑数据失败';
+      setError(errorMessage);
+      console.error('获取拓扑数据失败:', err);
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  const handleNodeClick = useCallback((node) => {
+    setSelectedNode(node.data || node);
+    setSelectedEdge(null);
+    setSidebarVisible(true);
+  }, []);
+
+  const handleEdgeClick = useCallback((edge) => {
+    setSelectedEdge(edge.data || edge);
+    setSelectedNode(null);
+    setSidebarVisible(true);
+  }, []);
+
+  const handleSidebarClose = useCallback(() => {
+    setSidebarVisible(false);
+    setSelectedNode(null);
+    setSelectedEdge(null);
+  }, []);
+
+  const layoutedElements = React.useMemo(() => {
+    if (!topologyData) return { nodes: [], edges: [] };
+
+    const centerDevice = topologyData.centerDevice;
+    const connectedNodes = topologyData.nodes || [];
+    const edges = topologyData.edges || [];
+
+    const allNodes = centerDevice ? [centerDevice, ...connectedNodes] : connectedNodes;
+    return calculateLayout(allNodes, edges, {
+      layoutType: 'TB',
+      centerNodeId: centerDevice?.deviceId
+    });
+  }, [topologyData, calculateLayout]);
+
+  const handleClose = useCallback(() => {
+    setSelectedSwitchId(null);
+    setTopologyData(null);
+    setError(null);
+    setSelectedNode(null);
+    setSelectedEdge(null);
+    onClose();
+  }, [onClose]);
+
+  return (
+    <Modal
+      title={
+        <div style={{ display: 'flex', alignItems: 'center', gap: 12 }}>
+          <div
+            style={{
+              width: 36,
+              height: 36,
+              borderRadius: 8,
+              background: designTokens.colors.primary.gradient,
+              display: 'flex',
+              alignItems: 'center',
+              justifyContent: 'center',
+              color: '#fff'
+            }}
+          >
+            <SwapOutlined />
+          </div>
+          <span style={{ fontSize: 18, fontWeight: 600 }}>接线拓扑图</span>
+        </div>
+      }
+      open={visible}
+      onCancel={handleClose}
+      width="90%"
+      style={{ top: 20 }}
+      bodyStyle={{ padding: '16px 24px', height: 'calc(100vh - 180px)' }}
+      footer={null}
+      destroyOnClose
+    >
+      <div style={{ display: 'flex', height: '100%', gap: 16 }}>
+        <div style={{ width: 280, flexShrink: 0 }}>
+          <TopologyControls
+            switchDevices={switchDevices}
+            selectedSwitchId={selectedSwitchId}
+            onSwitchChange={handleSwitchChange}
+            loading={loading}
+            onRefresh={fetchSwitchDevices}
+            statistics={topologyData?.statistics}
+          />
+
+          {topologyData?.statistics && (
+            <div style={{ fontSize: 12, color: '#999', textAlign: 'center', marginTop: 8 }}>
+              数据更新时间: {new Date().toLocaleTimeString()}
+            </div>
+          )}
+        </div>
+
+        <div style={{ flex: 1, position: 'relative', borderRadius: 8, overflow: 'hidden', border: '1px solid #e0e0e0' }}>
+          {loading && (
+            <div style={{
+              position: 'absolute',
+              top: '50%',
+              left: '50%',
+              transform: 'translate(-50%, -50%)',
+              zIndex: 10,
+              background: 'rgba(255,255,255,0.9)',
+              padding: 24,
+              borderRadius: 8
+            }}>
+              <Spin size="large" tip="加载拓扑数据..." />
+            </div>
+          )}
+
+          {error && (
+            <div style={{ padding: 16 }}>
+              <Alert
+                type="error"
+                message={error}
+                showIcon
+                style={{ marginBottom: 16 }}
+              />
+            </div>
+          )}
+
+          {!loading && !error && !selectedSwitchId && (
+            <div style={{
+              position: 'absolute',
+              top: '50%',
+              left: '50%',
+              transform: 'translate(-50%, -50%)',
+              textAlign: 'center'
+            }}>
+              <CloudServerOutlined style={{ fontSize: 48, color: '#ccc' }} />
+              <div style={{ marginTop: 16, color: '#999' }}>
+                请从左侧选择交换机以生成拓扑图
+              </div>
+            </div>
+          )}
+
+          <div style={{ width: '100%', height: '100%' }}>
+            <TopologyGraph
+              nodes={layoutedElements.nodes}
+              edges={layoutedElements.edges}
+              onNodeClick={handleNodeClick}
+              onEdgeClick={handleEdgeClick}
+              selectedNode={selectedNode}
+              selectedEdge={selectedEdge}
+            />
+          </div>
+        </div>
+
+        <TopologySidebar
+          visible={sidebarVisible}
+          onClose={handleSidebarClose}
+          selectedNode={selectedNode}
+          selectedEdge={selectedEdge}
+          data={topologyData}
+        />
+      </div>
+    </Modal>
+  );
+}
+
+export default TopologyModal;
diff --git a/frontend/src/components/topology/TopologySidebar.jsx b/frontend/src/components/topology/TopologySidebar.jsx
new file mode 100644
index 0000000..885b005
--- /dev/null
+++ b/frontend/src/components/topology/TopologySidebar.jsx
@@ -0,0 +1,333 @@
+import React from 'react';
+import { Drawer, Card, Descriptions, Tag, Badge, Row, Col, Statistic, Typography, Space, Progress } from 'antd';
+import {
+  CloudServerOutlined,
+  AppstoreOutlined,
+  DatabaseOutlined,
+  SwapOutlined
+} from '@ant-design/icons';
+
+const { Text, Title } = Typography;
+
+const DEVICE_COLORS = {
+  switch: '#1890ff',
+  router: '#722ed1',
+  server: '#52c41a',
+  storage: '#fa8c16',
+  default: '#8c8c8c'
+};
+
+const DEVICE_ICONS = {
+  switch: AppstoreOutlined,
+  router: SwapOutlined,
+  server: CloudServerOutlined,
+  storage: DatabaseOutlined,
+  default: CloudServerOutlined
+};
+
+const CABLE_COLORS = {
+  ethernet: '#1890ff',
+  fiber: '#13c2c2',
+  copper: '#fa8c16'
+};
+
+function TopologySidebar({ visible, onClose, selectedNode, selectedEdge, data }) {
+  if (!selectedNode && !selectedEdge) {
+    return null;
+  }
+
+  const renderDeviceDetail = () => {
+    if (!selectedNode) return null;
+
+    const IconComponent = DEVICE_ICONS[selectedNode.type] || DEVICE_ICONS.default;
+    const nodeColor = DEVICE_COLORS[selectedNode.type] || DEVICE_COLORS.default;
+    const portCount = selectedNode.portCount || {};
+    const usedPercent = portCount.total > 0 ? Math.round((portCount.used / portCount.total) * 100) : 0;
+
+    return (
+      <div>
+        <div
+          style={{
+            textAlign: 'center',
+            padding: '24px 16px',
+            background: `linear-gradient(135deg, ${nodeColor}15 0%, ${nodeColor}05 100%)`,
+            borderRadius: 12,
+            marginBottom: 20,
+            border: `1px solid ${nodeColor}30`
+          }}
+        >
+          <div
+            style={{
+              width: 64,
+              height: 64,
+              borderRadius: 16,
+              background: `${nodeColor}20`,
+              display: 'inline-flex',
+              alignItems: 'center',
+              justifyContent: 'center',
+              marginBottom: 12
+            }}
+          >
+            <IconComponent style={{ fontSize: 32, color: nodeColor }} />
+          </div>
+          <Title level={4} style={{ margin: '8px 0 4px' }}>{selectedNode.name}</Title>
+          <Text type="secondary" style={{ fontSize: 12 }}>{selectedNode.deviceId}</Text>
+          <div style={{ marginTop: 12, display: 'flex', justifyContent: 'center', gap: 8 }}>
+            <Tag color={nodeColor} style={{ borderRadius: 4, margin: 0 }}>
+              {selectedNode.type === 'switch' ? '交换机' :
+               selectedNode.type === 'router' ? '路由器' :
+               selectedNode.type === 'server' ? '服务器' :
+               selectedNode.type === 'storage' ? '存储' : '设备'}
+            </Tag>
+            {selectedNode.isCenter && (
+              <Tag color="gold" style={{ borderRadius: 4, margin: 0 }}>拓扑中心</Tag>
+            )}
+          </div>
+        </div>
+
+        <Card size="small" style={{ marginBottom: 16, borderRadius: 8 }}>
+          <Descriptions column={1} size="small">
+            <Descriptions.Item label={<Text type="secondary">设备型号</Text>}>
+              <Text>{selectedNode.model || '-'}</Text>
+            </Descriptions.Item>
+            <Descriptions.Item label={<Text type="secondary">IP地址</Text>}>
+              <Text code>{selectedNode.ipAddress || '-'}</Text>
+            </Descriptions.Item>
+            <Descriptions.Item label={<Text type="secondary">所属机房</Text>}>
+              <Text>{selectedNode.roomName || '-'}</Text>
+            </Descriptions.Item>
+            <Descriptions.Item label={<Text type="secondary">所属机柜</Text>}>
+              <Text>{selectedNode.rackName || '-'}</Text>
+            </Descriptions.Item>
+            <Descriptions.Item label={<Text type="secondary">U位</Text>}>
+              <Text>{typeof selectedNode.position === 'string' || typeof selectedNode.position === 'number'
+                ? selectedNode.position
+                : selectedNode.position?.x !== undefined
+                  ? `坐标(${selectedNode.position.x}, ${selectedNode.position.y})`
+                  : '-'}</Text>
+            </Descriptions.Item>
+            <Descriptions.Item label={<Text type="secondary">状态</Text>}>
+              <Badge
+                status={selectedNode.status === 'online' ? 'success' :
+                        selectedNode.status === 'fault' ? 'error' : 'default'}
+                text={selectedNode.status === 'online' ? '在线' :
+                       selectedNode.status === 'fault' ? '故障' : '离线'}
+              />
+            </Descriptions.Item>
+          </Descriptions>
+        </Card>
+
+        {portCount.total > 0 && (
+          <Card size="small" title={<Text style={{ fontSize: 13 }}>端口统计</Text>} style={{ marginBottom: 16, borderRadius: 8 }}>
+            <Row gutter={[8, 12]}>
+              <Col span={24}>
+                <Progress
+                  percent={usedPercent}
+                  strokeColor={nodeColor}
+                  trailColor="#f0f0f0"
+                  size="small"
+                  format={(percent) => (
+                    <span style={{ fontSize: 11, color: '#8c8c8c' }}>
+                      {portCount.used}/{portCount.total} 已用 ({percent}%)
+                    </span>
+                  )}
+                />
+              </Col>
+              <Col span={8}>
+                <Statistic
+                  title={<Text style={{ fontSize: 11 }}>总数</Text>}
+                  value={portCount.total || 0}
+                  valueStyle={{ fontSize: 18, color: '#262626' }}
+                />
+              </Col>
+              <Col span={8}>
+                <Statistic
+                  title={<Text style={{ fontSize: 11 }}>已用</Text>}
+                  value={portCount.used || 0}
+                  valueStyle={{ fontSize: 18, color: '#1890ff' }}
+                />
+              </Col>
+              <Col span={8}>
+                <Statistic
+                  title={<Text style={{ fontSize: 11 }}>空闲</Text>}
+                  value={portCount.free || 0}
+                  valueStyle={{ fontSize: 18, color: '#52c41a' }}
+                />
+              </Col>
+              {portCount.fault > 0 && (
+                <Col span={8}>
+                  <Statistic
+                    title={<Text style={{ fontSize: 11 }}>故障</Text>}
+                    value={portCount.fault || 0}
+                    valueStyle={{ fontSize: 18, color: '#ff4d4f' }}
+                  />
+                </Col>
+              )}
+            </Row>
+          </Card>
+        )}
+      </div>
+    );
+  };
+
+  const renderEdgeDetail = () => {
+    if (!selectedEdge) return null;
+
+    const centerDevice = data?.centerDevice;
+    const sourceDevice = selectedEdge.source === centerDevice?.deviceId
+      ? centerDevice
+      : data?.nodes?.find(n => n.id === selectedEdge.source);
+    const targetDevice = selectedEdge.target === centerDevice?.deviceId
+      ? centerDevice
+      : data?.nodes?.find(n => n.id === selectedEdge.target);
+    const cableColor = CABLE_COLORS[selectedEdge.cableType] || '#8c8c8c';
+
+    return (
+      <div>
+        <div
+          style={{
+            padding: '24px 16px',
+            background: `linear-gradient(135deg, ${cableColor}15 0%, ${cableColor}05 100%)`,
+            borderRadius: 12,
+            marginBottom: 20,
+            border: `1px solid ${cableColor}30`
+          }}
+        >
+          <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', gap: 16 }}>
+            <div style={{ textAlign: 'center', flex: 1 }}>
+              <div
+                style={{
+                  width: 48,
+                  height: 48,
+                  borderRadius: 8,
+                  background: `${DEVICE_COLORS[sourceDevice?.type] || '#8c8c8c'}20`,
+                  display: 'inline-flex',
+                  alignItems: 'center',
+                  justifyContent: 'center',
+                  marginBottom: 8
+                }}
+              >
+                {React.createElement(DEVICE_ICONS[sourceDevice?.type] || DEVICE_ICONS.default, {
+                  style: { fontSize: 24, color: DEVICE_COLORS[sourceDevice?.type] || '#8c8c8c' }
+                })}
+              </div>
+              <div style={{ fontWeight: 600, fontSize: 12 }}>{sourceDevice?.name || selectedEdge.source}</div>
+              <Tag size="small" style={{ marginTop: 4 }}>{selectedEdge.sourcePort}</Tag>
+            </div>
+
+            <div style={{ display: 'flex', flexDirection: 'column', alignItems: 'center', gap: 4 }}>
+              <div
+                style={{
+                  width: 40,
+                  height: 2,
+                  background: cableColor,
+                  position: 'relative'
+                }}
+              >
+                <div
+                  style={{
+                    position: 'absolute',
+                    right: -4,
+                    top: -3,
+                    width: 0,
+                    height: 0,
+                    borderLeft: `8px solid ${cableColor}`,
+                    borderTop: '4px solid transparent',
+                    borderBottom: '4px solid transparent'
+                  }}
+                />
+              </div>
+              <Tag color={cableColor} style={{ fontSize: 10, borderRadius: 4 }}>
+                {selectedEdge.cableType === 'ethernet' ? '网线' :
+                 selectedEdge.cableType === 'fiber' ? '光纤' :
+                 selectedEdge.cableType === 'copper' ? '铜缆' : selectedEdge.cableType}
+              </Tag>
+            </div>
+
+            <div style={{ textAlign: 'center', flex: 1 }}>
+              <div
+                style={{
+                  width: 48,
+                  height: 48,
+                  borderRadius: 8,
+                  background: `${DEVICE_COLORS[targetDevice?.type] || '#8c8c8c'}20`,
+                  display: 'inline-flex',
+                  alignItems: 'center',
+                  justifyContent: 'center',
+                  marginBottom: 8
+                }}
+              >
+                {React.createElement(DEVICE_ICONS[targetDevice?.type] || DEVICE_ICONS.default, {
+                  style: { fontSize: 24, color: DEVICE_COLORS[targetDevice?.type] || '#8c8c8c' }
+                })}
+              </div>
+              <div style={{ fontWeight: 600, fontSize: 12 }}>{targetDevice?.name || selectedEdge.target}</div>
+              <Tag size="small" style={{ marginTop: 4 }}>{selectedEdge.targetPort}</Tag>
+            </div>
+          </div>
+        </div>
+
+        <Card size="small" style={{ marginBottom: 16, borderRadius: 8 }}>
+          <Descriptions column={1} size="small">
+            <Descriptions.Item label={<Text type="secondary">线缆ID</Text>}>
+              <Text code>{selectedEdge.cableId}</Text>
+            </Descriptions.Item>
+            <Descriptions.Item label={<Text type="secondary">线缆类型</Text>}>
+              <Tag color={cableColor}>
+                {selectedEdge.cableType === 'ethernet' ? '网线' :
+                 selectedEdge.cableType === 'fiber' ? '光纤' :
+                 selectedEdge.cableType === 'copper' ? '铜缆' : selectedEdge.cableType}
+              </Tag>
+            </Descriptions.Item>
+            <Descriptions.Item label={<Text type="secondary">线缆长度</Text>}>
+              <Text>{selectedEdge.cableLength ? `${selectedEdge.cableLength}m` : '-'}</Text>
+            </Descriptions.Item>
+            <Descriptions.Item label={<Text type="secondary">线缆标签</Text>}>
+              <Text>{selectedEdge.cableLabel || '-'}</Text>
+            </Descriptions.Item>
+            <Descriptions.Item label={<Text type="secondary">状态</Text>}>
+              <Badge
+                status={selectedEdge.status === 'normal' ? 'success' :
+                        selectedEdge.status === 'fault' ? 'error' : 'default'}
+                text={selectedEdge.status === 'normal' ? '正常' :
+                       selectedEdge.status === 'fault' ? '故障' : '未连接'}
+              />
+            </Descriptions.Item>
+            <Descriptions.Item label={<Text type="secondary">安装时间</Text>}>
+              <Text>{selectedEdge.installedAt ? new Date(selectedEdge.installedAt).toLocaleDateString() : '-'}</Text>
+            </Descriptions.Item>
+          </Descriptions>
+        </Card>
+
+        {selectedEdge.description && (
+          <Card size="small" title={<Text style={{ fontSize: 13 }}>描述</Text>} style={{ borderRadius: 8 }}>
+            <Text>{selectedEdge.description}</Text>
+          </Card>
+        )}
+      </div>
+    );
+  };
+
+  return (
+    <Drawer
+      title={
+        <Space>
+          {selectedNode
+            ? React.createElement(DEVICE_ICONS[selectedNode?.type] || DEVICE_ICONS.default, {})
+            : React.createElement(SwapOutlined, {})}
+          <span>{selectedNode ? '设备详情' : '连接详情'}</span>
+        </Space>
+      }
+      placement="right"
+      width={340}
+      open={visible}
+      onClose={onClose}
+      destroyOnClose
+    >
+      {selectedNode && renderDeviceDetail()}
+      {selectedEdge && renderEdgeDetail()}
+    </Drawer>
+  );
+}
+
+export default TopologySidebar;
diff --git a/frontend/src/components/topology/hooks/useTopologyData.js b/frontend/src/components/topology/hooks/useTopologyData.js
new file mode 100644
index 0000000..bf8d9c4
--- /dev/null
+++ b/frontend/src/components/topology/hooks/useTopologyData.js
@@ -0,0 +1,74 @@
+import { useState, useCallback } from 'react';
+import axios from 'axios';
+
+export function useTopologyData() {
+  const [data, setData] = useState(null);
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState(null);
+
+  const fetchTopologyBySwitch = useCallback(async (switchId, options = {}) => {
+    if (!switchId) {
+      setData(null);
+      return;
+    }
+
+    try {
+      setLoading(true);
+      setError(null);
+      const params = { maxNodes: options.maxNodes || 100 };
+      const response = await axios.get(`/api/topology/switch/${switchId}`, { params });
+
+      if (response.data.success) {
+        setData(response.data.data);
+      } else {
+        setError(response.data.error || '获取拓扑数据失败');
+      }
+    } catch (err) {
+      const errorMessage = err.response?.data?.error || err.message || '获取拓扑数据失败';
+      setError(errorMessage);
+      console.error('获取拓扑数据失败:', err);
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  const fetchTopologyByRack = useCallback(async (rackId, options = {}) => {
+    if (!rackId) {
+      setData(null);
+      return;
+    }
+
+    try {
+      setLoading(true);
+      setError(null);
+      const params = { maxNodes: options.maxNodes || 100 };
+      const response = await axios.get(`/api/topology/rack/${rackId}`, { params });
+
+      if (response.data.success) {
+        setData(response.data.data);
+      } else {
+        setError(response.data.error || '获取拓扑数据失败');
+      }
+    } catch (err) {
+      const errorMessage = err.response?.data?.error || err.message || '获取拓扑数据失败';
+      setError(errorMessage);
+      console.error('获取拓扑数据失败:', err);
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  const clearData = useCallback(() => {
+    setData(null);
+    setError(null);
+  }, []);
+
+  return {
+    data,
+    loading,
+    error,
+    fetchTopologyBySwitch,
+    fetchTopologyByRack,
+    clearData
+  };
+}
diff --git a/frontend/src/components/topology/hooks/useTopologyLayout.js b/frontend/src/components/topology/hooks/useTopologyLayout.js
new file mode 100644
index 0000000..241ae6a
--- /dev/null
+++ b/frontend/src/components/topology/hooks/useTopologyLayout.js
@@ -0,0 +1,73 @@
+import { useCallback } from 'react';
+import dagre from 'dagre';
+
+const NODE_WIDTH = 180;
+const NODE_HEIGHT = 80;
+
+export function useTopologyLayout() {
+  const calculateLayout = useCallback((nodes, edges, options = {}) => {
+    if (!nodes || nodes.length === 0) {
+      return { nodes: [], edges: [] };
+    }
+
+    const { layoutType = 'TB', centerNodeId = null } = options;
+
+    const g = new dagre.graphlib.Graph();
+    g.setGraph({
+      rankdir: layoutType,
+      nodesep: 60,
+      ranksep: 100,
+      marginx: 30,
+      marginy: 30
+    });
+    g.setDefaultEdgeLabel(() => ({}));
+
+    nodes.forEach(node => {
+      g.setNode(node.id, { width: NODE_WIDTH, height: NODE_HEIGHT });
+    });
+
+    edges.forEach(edge => {
+      g.setEdge(edge.source, edge.target);
+    });
+
+    dagre.layout(g);
+
+    const positionedNodes = nodes.map(node => {
+      const nodeData = g.node(node.id);
+      if (!nodeData) return node;
+
+      let x = nodeData.x - NODE_WIDTH / 2;
+      let y = nodeData.y - NODE_HEIGHT / 2;
+
+      if (centerNodeId && node.id === centerNodeId) {
+        x = nodeData.x - NODE_WIDTH / 2;
+        y = nodeData.y - NODE_HEIGHT / 2;
+      }
+
+      return {
+        ...node,
+        position: { x, y }
+      };
+    });
+
+    return {
+      nodes: positionedNodes,
+      edges: edges.map(edge => ({
+        ...edge,
+        source: edge.source,
+        target: edge.target
+      }))
+    };
+  }, []);
+
+  const getLayoutedElements = useCallback((centerDevice, connectedNodes, edges, options = {}) => {
+    const allNodes = centerDevice ? [centerDevice, ...connectedNodes] : connectedNodes;
+    const layouted = calculateLayout(allNodes, edges, options);
+    return layouted;
+  }, [calculateLayout]);
+
+  return {
+    calculateLayout,
+    getLayoutedElements
+  };
+}
diff --git a/frontend/src/components/topology/index.js b/frontend/src/components/topology/index.js
new file mode 100644
index 0000000..fd73d03
--- /dev/null
+++ b/frontend/src/components/topology/index.js
@@ -0,0 +1,6 @@
+export { default as TopologyGraph } from './TopologyGraph';
+export { default as TopologySidebar } from './TopologySidebar';
+export { default as TopologyControls } from './TopologyControls';
+export { default as TopologyModal } from './TopologyModal';
+export { useTopologyData } from './hooks/useTopologyData';
+export { useTopologyLayout } from './hooks/useTopologyLayout';
diff --git a/frontend/src/components/topology/nodes/FirewallNode.jsx b/frontend/src/components/topology/nodes/FirewallNode.jsx
new file mode 100644
index 0000000..722eaed
--- /dev/null
+++ b/frontend/src/components/topology/nodes/FirewallNode.jsx
@@ -0,0 +1,114 @@
+import React from 'react';
+import { Tooltip } from 'antd';
+
+const NODE_WIDTH = 200;
+const NODE_HEIGHT = 100;
+
+const STATUS_COLORS = {
+  online: '#52c41a',
+  offline: '#d9d9d9',
+  fault: '#ff4d4f',
+  warning: '#faad14'
+};
+
+function RouterNode({ data }) {
+  if (!data) {
+    return (
+      <div style={{
+        width: NODE_WIDTH,
+        height: NODE_HEIGHT,
+        background: '#f0f0f0',
+        borderRadius: 8,
+        display: 'flex',
+        alignItems: 'center',
+        justifyContent: 'center'
+      }}>
+        无数据
+      </div>
+    );
+  }
+
+  const nodeColor = '#eb595a';
+  const statusColor = STATUS_COLORS[data.status] || STATUS_COLORS.offline;
+  const isCenter = data.isCenter;
+  const isSelected = data.selected;
+
+  return (
+    <div
+      style={{
+        width: NODE_WIDTH,
+        height: NODE_HEIGHT,
+        background: '#fff',
+        borderRadius: 8,
+        border: isSelected
+          ? `2px solid ${nodeColor}`
+          : isCenter
+            ? `2px solid ${nodeColor}`
+            : `1px solid #d9d9d9`,
+        boxShadow: isCenter
+          ? `0 4px 16px ${nodeColor}40`
+          : isSelected
+            ? `0 4px 12px ${nodeColor}30`
+            : '0 2px 8px rgba(0,0,0,0.1)',
+        overflow: 'hidden',
+        transition: 'all 0.2s ease',
+        cursor: 'pointer',
+        display: 'flex',
+        flexDirection: 'column'
+      }}
+    >
+      <div style={{ flex: 1, display: 'flex', alignItems: 'center', justifyContent: 'center', padding: '8px' }}>
+        <img
+          src="/png/防火墙.png"
+          alt="防火墙"
+          style={{ width: 'auto', height: '60px', objectFit: 'contain' }}
+          onError={(e) => { e.target.style.display = 'none'; }}
+        />
+      </div>
+
+      <div style={{
+        height: 32,
+        background: '#fff1f0',
+        padding: '4px 8px',
+        display: 'flex',
+        alignItems: 'center',
+        justifyContent: 'space-between'
+      }}>
+        <Tooltip title={data.name || '防火墙'} placement="bottomLeft">
+          <div style={{
+            fontSize: 11,
+            fontWeight: 'bold',
+            color: '#262626',
+            overflow: 'hidden',
+            textOverflow: 'ellipsis',
+            whiteSpace: 'nowrap',
+            flex: 1,
+            cursor: 'pointer'
+          }}>
+            {data.name?.substring(0, 14) || '防火墙'}
+          </div>
+        </Tooltip>
+        <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+          <span style={{
+            width: 8,
+            height: 8,
+            borderRadius: '50%',
+            background: statusColor,
+            display: 'inline-block'
+          }} />
+          {isCenter && (
+            <span style={{
+              fontSize: 9,
+              color: '#faad14',
+              fontWeight: 'bold'
+            }}>
+              ★
+            </span>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
+
+export default RouterNode;
diff --git a/frontend/src/components/topology/nodes/GenericNode.jsx b/frontend/src/components/topology/nodes/GenericNode.jsx
new file mode 100644
index 0000000..9b32623
--- /dev/null
+++ b/frontend/src/components/topology/nodes/GenericNode.jsx
@@ -0,0 +1,155 @@
+import React from 'react';
+
+const NODE_WIDTH = 200;
+const NODE_HEIGHT = 80;
+
+const STATUS_COLORS = {
+  online: '#52c41a',
+  offline: '#d9d9d9',
+  fault: '#ff4d4f',
+  warning: '#faad14'
+};
+
+const TYPE_COLORS = {
+  switch: '#1890ff',
+  router: '#722ed1',
+  server: '#52c41a',
+  storage: '#fa8c16',
+  default: '#8c8c8c'
+};
+
+function GenericNode({ data }) {
+  if (!data) {
+    return (
+      <div style={{
+        width: NODE_WIDTH,
+        height: NODE_HEIGHT,
+        background: '#f0f0f0',
+        borderRadius: 8,
+        display: 'flex',
+        alignItems: 'center',
+        justifyContent: 'center'
+      }}>
+        无数据
+      </div>
+    );
+  }
+
+  const nodeColor = TYPE_COLORS[data.type] || TYPE_COLORS.default;
+  const statusColor = STATUS_COLORS[data.status] || STATUS_COLORS.offline;
+  const isCenter = data.isCenter;
+  const isSelected = data.selected;
+
+  return (
+    <div
+      style={{
+        width: NODE_WIDTH,
+        height: NODE_HEIGHT,
+        background: '#fff',
+        borderRadius: 8,
+        border: isSelected
+          ? `2px solid ${nodeColor}`
+          : isCenter
+            ? `2px solid ${nodeColor}`
+            : `1px solid #d9d9d9`,
+        boxShadow: isCenter
+          ? `0 4px 16px ${nodeColor}40`
+          : isSelected
+            ? `0 4px 12px ${nodeColor}30`
+            : '0 2px 8px rgba(0,0,0,0.1)',
+        overflow: 'hidden',
+        transition: 'all 0.2s ease',
+        cursor: 'pointer'
+      }}
+    >
+      <svg
+        width={NODE_WIDTH}
+        height={NODE_HEIGHT}
+        viewBox={`0 0 ${NODE_WIDTH} ${NODE_HEIGHT}`}
+        style={{ display: 'block' }}
+      >
+        <rect
+          x="10"
+          y="10"
+          width={NODE_WIDTH - 20}
+          height={NODE_HEIGHT - 20}
+          rx="4"
+          fill="#fafafa"
+          stroke={nodeColor}
+          strokeWidth="1"
+        />
+
+        <rect
+          x="20"
+          y="20"
+          width="50"
+          height={NODE_HEIGHT - 40}
+          rx="4"
+          fill={nodeColor}
+          opacity="0.2"
+        />
+
+        <rect
+          x="25"
+          y="25"
+          width="40"
+          height="30"
+          rx="2"
+          fill={nodeColor}
+        />
+
+        <circle cx="35" cy="35" r="6" fill="#fff" />
+        <circle cx="35" cy="35" r="3" fill="#fff" opacity="0.5" />
+
+        <line x1="75" y1="20" x2="75" y2={NODE_HEIGHT - 20} stroke="#d9d9d9" strokeWidth="1" />
+
+        <text
+          x="85"
+          y="35"
+          fill="#262626"
+          fontSize="12"
+          fontWeight="bold"
+        >
+          <title>{data.name || '设备'}</title>
+          {data.name?.substring(0, 10) || '设备'}
+        </text>
+        <text
+          x="85"
+          y="50"
+          fill="#8c8c8c"
+          fontSize="10"
+        >
+          {data.type === 'switch' ? '交换机' :
+           data.type === 'router' ? '路由器' :
+           data.type === 'server' ? '服务器' :
+           data.type === 'storage' ? '存储' : '设备'}
+        </text>
+
+        {isCenter && (
+          <>
+            <circle cx={NODE_WIDTH - 20} cy="15" r="8" fill={nodeColor} />
+            <text
+              x={NODE_WIDTH - 20}
+              y="19"
+              fill="#fff"
+              fontSize="8"
+              fontWeight="bold"
+              textAnchor="middle"
+            >
+              ★
+            </text>
+          </>
+        )}
+
+        <circle
+          cx={NODE_WIDTH - 15}
+          cy={NODE_HEIGHT - 15}
+          r="4"
+          fill={statusColor}
+        />
+      </svg>
+    </div>
+  );
+}
+
+export default GenericNode;
diff --git a/frontend/src/components/topology/nodes/RouterNode.jsx b/frontend/src/components/topology/nodes/RouterNode.jsx
new file mode 100644
index 0000000..788c81f
--- /dev/null
+++ b/frontend/src/components/topology/nodes/RouterNode.jsx
@@ -0,0 +1,114 @@
+import React from 'react';
+import { Tooltip } from 'antd';
+
+const NODE_WIDTH = 200;
+const NODE_HEIGHT = 100;
+
+const STATUS_COLORS = {
+  online: '#52c41a',
+  offline: '#d9d9d9',
+  fault: '#ff4d4f',
+  warning: '#faad14'
+};
+
+function RouterNode({ data }) {
+  if (!data) {
+    return (
+      <div style={{
+        width: NODE_WIDTH,
+        height: NODE_HEIGHT,
+        background: '#f0f0f0',
+        borderRadius: 8,
+        display: 'flex',
+        alignItems: 'center',
+        justifyContent: 'center'
+      }}>
+        无数据
+      </div>
+    );
+  }
+
+  const nodeColor = '#722ed1';
+  const statusColor = STATUS_COLORS[data.status] || STATUS_COLORS.offline;
+  const isCenter = data.isCenter;
+  const isSelected = data.selected;
+
+  return (
+    <div
+      style={{
+        width: NODE_WIDTH,
+        height: NODE_HEIGHT,
+        background: '#fff',
+        borderRadius: 8,
+        border: isSelected
+          ? `2px solid ${nodeColor}`
+          : isCenter
+            ? `2px solid ${nodeColor}`
+            : `1px solid #d9d9d9`,
+        boxShadow: isCenter
+          ? `0 4px 16px ${nodeColor}40`
+          : isSelected
+            ? `0 4px 12px ${nodeColor}30`
+            : '0 2px 8px rgba(0,0,0,0.1)',
+        overflow: 'hidden',
+        transition: 'all 0.2s ease',
+        cursor: 'pointer',
+        display: 'flex',
+        flexDirection: 'column'
+      }}
+    >
+      <div style={{ flex: 1, display: 'flex', alignItems: 'center', justifyContent: 'center', padding: '8px' }}>
+        <img
+          src="/png/路由器.png"
+          alt="路由器"
+          style={{ width: 'auto', height: '60px', objectFit: 'contain' }}
+          onError={(e) => { e.target.style.display = 'none'; }}
+        />
+      </div>
+
+      <div style={{
+        height: 32,
+        background: '#f9f0ff',
+        padding: '4px 8px',
+        display: 'flex',
+        alignItems: 'center',
+        justifyContent: 'space-between'
+      }}>
+        <Tooltip title={data.name || '路由器'} placement="bottomLeft">
+          <div style={{
+            fontSize: 11,
+            fontWeight: 'bold',
+            color: '#262626',
+            overflow: 'hidden',
+            textOverflow: 'ellipsis',
+            whiteSpace: 'nowrap',
+            flex: 1,
+            cursor: 'pointer'
+          }}>
+            {data.name?.substring(0, 14) || '路由器'}
+          </div>
+        </Tooltip>
+        <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+          <span style={{
+            width: 8,
+            height: 8,
+            borderRadius: '50%',
+            background: statusColor,
+            display: 'inline-block'
+          }} />
+          {isCenter && (
+            <span style={{
+              fontSize: 9,
+              color: '#faad14',
+              fontWeight: 'bold'
+            }}>
+              ★
+            </span>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
+
+export default RouterNode;
diff --git a/frontend/src/components/topology/nodes/ServerNode.jsx b/frontend/src/components/topology/nodes/ServerNode.jsx
new file mode 100644
index 0000000..607274f
--- /dev/null
+++ b/frontend/src/components/topology/nodes/ServerNode.jsx
@@ -0,0 +1,114 @@
+import React from 'react';
+import { Tooltip } from 'antd';
+
+const NODE_WIDTH = 200;
+const NODE_HEIGHT = 100;
+
+const STATUS_COLORS = {
+  online: '#52c41a',
+  offline: '#d9d9d9',
+  fault: '#ff4d4f',
+  warning: '#faad14'
+};
+
+function ServerNode({ data }) {
+  if (!data) {
+    return (
+      <div style={{
+        width: NODE_WIDTH,
+        height: NODE_HEIGHT,
+        background: '#f0f0f0',
+        borderRadius: 8,
+        display: 'flex',
+        alignItems: 'center',
+        justifyContent: 'center'
+      }}>
+        无数据
+      </div>
+    );
+  }
+
+  const nodeColor = '#52c41a';
+  const statusColor = STATUS_COLORS[data.status] || STATUS_COLORS.offline;
+  const isCenter = data.isCenter;
+  const isSelected = data.selected;
+
+  return (
+    <div
+      style={{
+        width: NODE_WIDTH,
+        height: NODE_HEIGHT,
+        background: '#fff',
+        borderRadius: 8,
+        border: isSelected
+          ? `2px solid ${nodeColor}`
+          : isCenter
+            ? `2px solid ${nodeColor}`
+            : `1px solid #d9d9d9`,
+        boxShadow: isCenter
+          ? `0 4px 16px ${nodeColor}40`
+          : isSelected
+            ? `0 4px 12px ${nodeColor}30`
+            : '0 2px 8px rgba(0,0,0,0.1)',
+        overflow: 'hidden',
+        transition: 'all 0.2s ease',
+        cursor: 'pointer',
+        display: 'flex',
+        flexDirection: 'column'
+      }}
+    >
+      <div style={{ flex: 1, display: 'flex', alignItems: 'center', justifyContent: 'center', padding: '8px' }}>
+        <img
+          src="/png/服务器.png"
+          alt="服务器"
+          style={{ width: 'auto', height: '60px', objectFit: 'contain' }}
+          onError={(e) => { e.target.style.display = 'none'; }}
+        />
+      </div>
+
+      <div style={{
+        height: 32,
+        background: '#f6ffed',
+        padding: '4px 8px',
+        display: 'flex',
+        alignItems: 'center',
+        justifyContent: 'space-between'
+      }}>
+        <Tooltip title={data.name || '服务器'} placement="bottomLeft">
+          <div style={{
+            fontSize: 11,
+            fontWeight: 'bold',
+            color: '#262626',
+            overflow: 'hidden',
+            textOverflow: 'ellipsis',
+            whiteSpace: 'nowrap',
+            flex: 1,
+            cursor: 'pointer'
+          }}>
+            {data.name?.substring(0, 14) || '服务器'}
+          </div>
+        </Tooltip>
+        <div style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
+          <span style={{
+            width: 8,
+            height: 8,
+            borderRadius: '50%',
+            background: statusColor,
+            display: 'inline-block'
+          }} />
+          {isCenter && (
+            <span style={{
+              fontSize: 9,
+              color: '#faad14',
+              fontWeight: 'bold'
+            }}>
+              ★
+            </span>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
+
+export default ServerNode;
diff --git a/frontend/src/components/topology/nodes/StorageNode.jsx b/frontend/src/components/topology/nodes/StorageNode.jsx
new file mode 100644
index 0000000..9900453
--- /dev/null
+++ b/frontend/src/components/topology/nodes/StorageNode.jsx
@@ -0,0 +1,226 @@
+import React from 'react';
+import { Tooltip } from 'antd';
+
+const NODE_WIDTH = 200;
+const NODE_HEIGHT = 110;
+
+const STATUS_COLORS = {
+  online: '#52c41a',
+  offline: '#d9d9d9',
+  fault: '#ff4d4f',
+  warning: '#faad14'
+};
+
+function StorageNode({ data }) {
+  if (!data) {
+    return (
+      <div style={{
+        width: NODE_WIDTH,
+        height: NODE_HEIGHT,
+        background: '#f0f0f0',
+        borderRadius: 8,
+        display: 'flex',
+        alignItems: 'center',
+        justifyContent: 'center'
+      }}>
+        无数据
+      </div>
+    );
+  }
+
+  const nodeColor = '#fa8c16';
+  const statusColor = STATUS_COLORS[data.status] || STATUS_COLORS.offline;
+  const isCenter = data.isCenter;
+  const isSelected = data.selected;
+
+  const diskCount = 8;
+  const activeDisks = Math.floor((data.portCount?.used || 12) / 4);
+
+  return (
+    <div
+      style={{
+        width: NODE_WIDTH,
+        height: NODE_HEIGHT,
+        background: '#fff',
+        borderRadius: 8,
+        border: isSelected
+          ? `2px solid ${nodeColor}`
+          : isCenter
+            ? `2px solid ${nodeColor}`
+            : `1px solid #d9d9d9`,
+        boxShadow: isCenter
+          ? `0 4px 16px ${nodeColor}40`
+          : isSelected
+            ? `0 4px 12px ${nodeColor}30`
+            : '0 2px 8px rgba(0,0,0,0.1)',
+        overflow: 'hidden',
+        transition: 'all 0.2s ease',
+        cursor: 'pointer'
+      }}
+    >
+      <svg
+        width={NODE_WIDTH}
+        height={NODE_HEIGHT}
+        viewBox={`0 0 ${NODE_WIDTH} ${NODE_HEIGHT}`}
+        style={{ display: 'block' }}
+      >
+        <rect
+          x="10"
+          y="10"
+          width={NODE_WIDTH - 20}
+          height={NODE_HEIGHT - 20}
+          rx="4"
+          fill="#fff7e6"
+          stroke={nodeColor}
+          strokeWidth="1"
+        />
+
+        <rect
+          x="15"
+          y="15"
+          width={NODE_WIDTH - 30}
+          height="55"
+          rx="3"
+          fill="#fff"
+          stroke={nodeColor}
+          strokeWidth="1"
+        />
+
+        <rect
+          x="20"
+          y="20"
+          width="35"
+          height="45"
+          rx="2"
+          fill="#262626"
+        />
+        <rect x="23" y="23" width="29" height="4" rx="1" fill="#52c41a" />
+        {[...Array(6)].map((_, i) => (
+          <rect
+            key={i}
+            x="23"
+            y={29 + i * 6}
+            width="29"
+            height="4"
+            rx="1"
+            fill={i < activeDisks ? nodeColor : '#595959'}
+          />
+        ))}
+
+        <rect
+          x="60"
+          y="20"
+          width="35"
+          height="45"
+          rx="2"
+          fill="#262626"
+        />
+        <rect x="63" y="23" width="29" height="4" rx="1" fill="#52c41a" />
+        {[...Array(6)].map((_, i) => (
+          <rect
+            key={i}
+            x="63"
+            y={29 + i * 6}
+            width="29"
+            height="4"
+            rx="1"
+            fill={i < activeDisks - 2 ? nodeColor : '#595959'}
+          />
+        ))}
+
+        <rect
+          x="100"
+          y="20"
+          width="35"
+          height="45"
+          rx="2"
+          fill="#262626"
+        />
+        <rect x="103" y="23" width="29" height="4" rx="1" fill="#52c41a" />
+        {[...Array(6)].map((_, i) => (
+          <rect
+            key={i}
+            x="103"
+            y={29 + i * 6}
+            width="29"
+            height="4"
+            rx="1"
+            fill={i < activeDisks - 4 ? nodeColor : '#595959'}
+          />
+        ))}
+
+        <rect
+          x="140"
+          y="20"
+          width="35"
+          height="45"
+          rx="2"
+          fill="#262626"
+        />
+        <rect x="143" y="23" width="29" height="4" rx="1" fill="#52c41a" />
+        {[...Array(6)].map((_, i) => (
+          <rect
+            key={i}
+            x="143"
+            y={29 + i * 6}
+            width="29"
+            height="4"
+            rx="1"
+            fill={i < activeDisks - 6 ? nodeColor : '#595959'}
+          />
+        ))}
+
+        <line x1="15" y1="75" x2={NODE_WIDTH - 15} y2="75" stroke="#d9d9d9" strokeWidth="1" />
+
+        <rect x="15" y="80" width="80" height="5" rx="1" fill="#262626" />
+        <rect x="100" y="80" width="40" height="5" rx="1" fill="#52c41a" />
+
+        <text
+          x="15"
+          y="98"
+          fill="#262626"
+          fontSize="10"
+          fontWeight="bold"
+        >
+          <title>{data.name || '存储设备'}</title>
+          {data.name?.substring(0, 14) || '存储设备'}
+        </text>
+
+        <text
+          x={NODE_WIDTH - 15}
+          y="98"
+          fill="#8c8c8c"
+          fontSize="9"
+          textAnchor="end"
+        >
+          {data.model || 'Storage'}
+        </text>
+
+        {isCenter && (
+          <>
+            <circle cx={NODE_WIDTH - 20} cy="12" r="8" fill={nodeColor} />
+            <text
+              x={NODE_WIDTH - 20}
+              y="16"
+              fill="#fff"
+              fontSize="8"
+              fontWeight="bold"
+              textAnchor="middle"
+            >
+              ★
+            </text>
+          </>
+        )}
+
+        <circle
+          cx={NODE_WIDTH - 15}
+          cy={NODE_HEIGHT - 12}
+          r="4"
+          fill={statusColor}
+        />
+      </svg>
+    </div>
+  );
+}
+
+export default StorageNode;
diff --git a/frontend/src/components/topology/nodes/SwitchNode.jsx b/frontend/src/components/topology/nodes/SwitchNode.jsx
new file mode 100644
index 0000000..e1d2952
--- /dev/null
+++ b/frontend/src/components/topology/nodes/SwitchNode.jsx
@@ -0,0 +1,120 @@
+import React from 'react';
+import { Tooltip } from 'antd';
+
+const NODE_WIDTH = 200;
+const NODE_HEIGHT = 120;
+
+const STATUS_COLORS = {
+  online: '#52c41a',
+  offline: '#d9d9d9',
+  fault: '#ff4d4f',
+  warning: '#faad14'
+};
+
+function SwitchNode({ data }) {
+  if (!data) {
+    return (
+      <div style={{
+        width: NODE_WIDTH,
+        height: NODE_HEIGHT,
+        background: '#f0f0f0',
+        borderRadius: 8,
+        display: 'flex',
+        alignItems: 'center',
+        justifyContent: 'center'
+      }}>
+        无数据
+      </div>
+    );
+  }
+
+  const nodeColor = '#1890ff';
+  const statusColor = STATUS_COLORS[data.status] || STATUS_COLORS.offline;
+  const isCenter = data.isCenter;
+  const isSelected = data.selected;
+  const portCount = data.portCount || { total: 24, used: 12, free: 12 };
+
+  return (
+    <div
+      style={{
+        width: NODE_WIDTH,
+        height: NODE_HEIGHT,
+        background: '#fff',
+        borderRadius: 8,
+        border: isSelected
+          ? `2px solid ${nodeColor}`
+          : isCenter
+            ? `2px solid ${nodeColor}`
+            : `1px solid #d9d9d9`,
+        boxShadow: isCenter
+          ? `0 4px 16px ${nodeColor}40`
+          : isSelected
+            ? `0 4px 12px ${nodeColor}30`
+            : '0 2px 8px rgba(0,0,0,0.1)',
+        overflow: 'hidden',
+        transition: 'all 0.2s ease',
+        cursor: 'pointer',
+        display: 'flex',
+        flexDirection: 'column'
+      }}
+    >
+      <div style={{ flex: 1, display: 'flex', alignItems: 'center', justifyContent: 'center', padding: '8px' }}>
+        <img
+          src="/png/交换机.png"
+          alt="交换机"
+          style={{ width: 'auto', height: '70px', objectFit: 'contain' }}
+          onError={(e) => { e.target.style.display = 'none'; }}
+        />
+      </div>
+
+      <div style={{
+        height: 36,
+        background: '#e6f7ff',
+        padding: '4px 8px',
+        display: 'flex',
+        flexDirection: 'column',
+        justifyContent: 'center'
+      }}>
+        <Tooltip title={data.name || '交换机'} placement="bottomLeft">
+          <div style={{
+            fontSize: 11,
+            fontWeight: 'bold',
+            color: '#262626',
+            overflow: 'hidden',
+            textOverflow: 'ellipsis',
+            whiteSpace: 'nowrap',
+            cursor: 'pointer'
+          }}>
+            {data.name?.substring(0, 16) || '交换机'}
+          </div>
+        </Tooltip>
+        <div style={{ display: 'flex', alignItems: 'center', gap: 4, marginTop: 2 }}>
+          <span style={{
+            fontSize: 9,
+            color: '#8c8c8c'
+          }}>
+            端口: {portCount.used}/{portCount.total}
+          </span>
+          <span style={{
+            width: 8,
+            height: 8,
+            borderRadius: '50%',
+            background: statusColor,
+            display: 'inline-block'
+          }} />
+          {isCenter && (
+            <span style={{
+              fontSize: 9,
+              color: '#faad14',
+              fontWeight: 'bold'
+            }}>
+              ★ 中心
+            </span>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
+
+export default SwitchNode;
diff --git a/frontend/src/components/topology/nodes/index.js b/frontend/src/components/topology/nodes/index.js
new file mode 100644
index 0000000..127c8af
--- /dev/null
+++ b/frontend/src/components/topology/nodes/index.js
@@ -0,0 +1,6 @@
+export { default as SwitchNode } from './SwitchNode';
+export { default as ServerNode } from './ServerNode';
+export { default as RouterNode } from './RouterNode';
+export { default as StorageNode } from './StorageNode';
+export { default as GenericNode } from './GenericNode';
+export { default as FirewallNode } from './FirewallNode';
diff --git a/frontend/src/pages/CableManagement.jsx b/frontend/src/pages/CableManagement.jsx
index bae3b9e..3982d5a 100644
--- a/frontend/src/pages/CableManagement.jsx
+++ b/frontend/src/pages/CableManagement.jsx
@@ -46,6 +46,7 @@ import {
   FilterOutlined,
   ClearOutlined,
   MoreOutlined,
+  ShareAltOutlined,
 } from '@ant-design/icons';
 import axios from 'axios';
 import * as XLSX from 'xlsx';
@@ -55,6 +56,7 @@ import { designTokens } from '../config/theme';
 import { debounce } from '../utils/common';
 import CloseButton from '../components/CloseButton';
 import CableWizardModal from '../components/CableWizardModal';
+import { TopologyModal } from '../components/topology';
 
 const { Option } = Select;
 const { Panel } = Collapse;
@@ -145,6 +147,8 @@ function CableManagement() {
 
   const [expandedKeys, setExpandedKeys] = useState([]);
 
+  const [topologyModalVisible, setTopologyModalVisible] = useState(false);
+
   const fetchCables = useCallback(async () => {
     try {
       setLoading(true);
@@ -1069,6 +1073,14 @@ function CableManagement() {
               >
                 导出
               </Button>
+              <Button
+                icon={<ShareAltOutlined />}
+                onClick={() => setTopologyModalVisible(true)}
+                size="large"
+                style={{ borderRadius: designTokens.borderRadius.sm }}
+              >
+                生成拓扑图
+              </Button>
             </Space>
             <Space>
               <Tooltip title="刷新数据">
@@ -1866,6 +1878,11 @@ function CableManagement() {
           </div>
         )}
       </Modal>
+
+      <TopologyModal
+        visible={topologyModalVisible}
+        onClose={() => setTopologyModalVisible(false)}
+      />
     </motion.div>
   );
 }