diff --git a/src/App.tsx b/src/App.tsx
index ca9c559..bb1fc8f 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -18,7 +18,8 @@ import {
   EdgeMouseHandler
 } from '@xyflow/react';
 import '@xyflow/react/dist/style.css';
-import { AppNode, AppEdge, NodeData, EdgeData, NodeDataUpdate, EdgeDataUpdate, Settings, initialSettings, SettingsContext } from './types/graph';
+import { AppNode, AppEdge, NodeData, EdgeData, NodeDataUpdate, EdgeDataUpdate } from './types/graph';
+import {Settings, initialSettings, SettingsContext} from './types/settings'
 import CustomNode from './components/CustomNode';
 import NodeEditor from './components/NodeEditor';
 import EdgeEditor from './components/EdgeEditor'
diff --git a/src/components/CustomNode.tsx b/src/components/CustomNode.tsx
index 6885f91..5fca8c6 100644
--- a/src/components/CustomNode.tsx
+++ b/src/components/CustomNode.tsx
@@ -1,9 +1,9 @@
 import { ReactNode, useContext } from 'react';
 import { Handle, Position, NodeProps,  useReactFlow} from '@xyflow/react';
 import { AppNode, AppEdge, AppGraph, NodeData } from '../types/graph';
-import {Settings, SettingsContext} from '../types/settings'
+import {Settings, SettingsContext, SubnetInfo} from '../types/settings'
 import StringBuilder from '../utils/StringBuilder';
-
+import { Result } from '../utils/Result';
 import { CIDR, IPUtils } from '../utils/iputils';
 import { tryDerivePublicKey } from '../utils/wireguardConfig'
 import './CustomNode.css';
@@ -17,26 +17,6 @@ class ConfigResult {
   ) {}
 }
 
-// function mapAddressToCIDR(nodeIds : string[], getAddress: GetAddress) : Record<string, CIDR> {
-//   const nodeIdToCIDR : Record<string, CIDR> = {};
-//   for(const nodeId of nodeIds) {
-//     const address = getAddress(nodeId);
-//     if(!address) continue;
-//     const result = IPUtils.parse(address);
-//     const cidr = result.cidr;
-//     if(!cidr) {
-//       throw new Error("节点地址无效");
-//     }
-//     if(cidr.version === 'IPv4') {
-//       cidr.mask = 32;
-//     } else if(cidr.version === 'IPv6') {
-//       cidr.mask = 128;
-//     }
-//     nodeIdToCIDR[nodeId] = cidr;
-//   }
-//   return nodeIdToCIDR;
-// }
-
 function generateInterfaceConfig(settings: Settings, data: NodeData) : StringBuilder {
   const address = [data.ipv4Address, data.ipv6Address].flatMap(p => p ? [p] : []).join(', ');
   const config = new StringBuilder();
@@ -52,8 +32,65 @@ function generateInterfaceConfig(settings: Settings, data: NodeData) : StringBui
   return config;
 }
 
-function generateConfig(settings: Settings, data: NodeData, graph: AppGraph) : ConfigResult {
-  const config = generateInterfaceConfig(settings, data);
+function getFromChildRouterMapper(subnet: SubnetInfo, graph: AppGraph, nodeId: string, disallowCIDRs: CIDR[]) : Result<Map<string, CIDR[]>> {
+  const subGraph = graph.getConnectedSubgraph(subnet.nodes.map(kv => kv.nodeId));
+
+  if(!subGraph) 
+    return Result.Error(`图不连通，无法生存子网路由：${subnet.subnet.toString()}`);
+  
+
+  const fromChildMapper: Map<string, string[]> = new Map();
+  const visited: Set<string> = new Set();
+  visited.add(nodeId);
+  const queue : string[] = [];
+  const children = subGraph.getChildren(nodeId);
+  children.forEach(child => {
+    fromChildMapper.set(child, [child]);
+    visited.add(child);
+    queue.push(child);
+  });
+
+  const allNodes = [];
+  while(queue.length > 0) {
+    const curr = queue.shift()!;
+    const fromChild = fromChildMapper.get(curr);
+    if(!fromChild) continue;
+    allNodes.push(curr);
+    const nexts = subGraph.getChildren(curr);
+    for(const next of nexts) {
+      if(visited.has(next)) continue;
+      fromChild.push(next);
+      visited.add(next);
+      queue.push(next);
+    }
+  }
+
+  const allCIDRs = allNodes.flatMap((nodeId: string) => {
+      const cidr = subnet.nodes.find(n => n.nodeId === nodeId)?.cidr;
+      return cidr ? [cidr] : [];
+    });
+
+  const result: Map<string, CIDR[]> = new Map();
+  for (const [fromChild, nodes] of fromChildMapper) {
+    const targetCIDRs = nodes.flatMap((nodeId: string) => {
+        const cidr = subnet.nodes.find(n => n.nodeId === nodeId)?.cidr;
+        if(!cidr || disallowCIDRs.some(disallow => disallow.contains(cidr))) return [];
+        return [cidr];
+      });
+
+      const mergeResult = IPUtils.mergeCIDRs(allCIDRs, targetCIDRs);
+      if(!mergeResult) {
+        return Result.Error("无法生成路由配置");
+      }
+      result.set(fromChild, mergeResult);
+  }
+  
+  return Result.Result(result);
+}
+
+
+function generateConfig(settings: Settings, data: NodeData, graph: AppGraph, subnets: SubnetInfo[]) : ConfigResult {
+  const config: StringBuilder = generateInterfaceConfig(settings, data);
   
   const disallowCIDRs : CIDR[] = [];
   if(data.disallowIPs) {
@@ -67,119 +104,120 @@ function generateConfig(settings: Settings, data: NodeData, graph: AppGraph) : C
     }
   }
 
-  const belongsToEdge : Record<string, string | undefined> = {[node.id]: node.id};
+  const allowIPsConfig: Map<string, string[]> = new Map();
 
-  const queue : AppNode[] = [];
-  const nearEdges = getNearEdges(node);
-  nearEdges.forEach(edge => {
-    const nextNode = getNextNode(edge, node)!;
-    belongsToEdge[nextNode.id] = edge.id;
-    queue.push(nextNode);
-  });
-
-  while(queue.length > 0) {
-    const currentNode = queue.shift()!;
-    const fromEdgeId = belongsToEdge[currentNode.id];
-    if(!fromEdgeId) continue;
-
-    getNearEdges(currentNode).forEach(edge => {
-      const nextNode = getNextNode(edge, currentNode)!;
-      if(!belongsToEdge[nextNode.id]) {
-        belongsToEdge[nextNode.id] = fromEdgeId;
-        queue.push(nextNode);
+  for(const subnet of subnets) {
+    const result = getFromChildRouterMapper(subnet, graph, data.id, disallowCIDRs);
+    const mapper = result.result;
+    if(!mapper) return new ConfigResult(false, undefined, `路由生成失败：${result.errorInfo()}`);
+    
+    for(const [fromChild, cidrs] of mapper) {
+      if(!allowIPsConfig.has(fromChild)) allowIPsConfig.set(fromChild, []);
+      const allowIPs = allowIPsConfig.get(fromChild)!;
+      for(const cidr of cidrs) {
+        allowIPs.push(cidr.toString());
       }
-    });
+    } 
   }
-  
-  const groupedByEdge: Record<string, string[] | undefined> = {};
-  const nodeIds : string[] = [];
-  for (const nodeId in belongsToEdge) {
-    const edgeId = belongsToEdge[nodeId];
-    if(edgeId === nodeId) continue; // 跳过起始节点
-    nodeIds.push(nodeId);
-    if(!edgeId) continue;
-    if (!groupedByEdge[edgeId]) {
-      groupedByEdge[edgeId] = [];
-    }
-    groupedByEdge[edgeId].push(nodeId);
-  }
-  
-  for(const edgeId in groupedByEdge) {
-    const groupNodeIds = groupedByEdge[edgeId]!;
-    const edge = getEdge(edgeId)!;
-    const nextNode = getNextNode(edge, node)!;
-    const nextNodeData = nextNode.data;
 
-    const publicKey = tryDerivePublicKey(nextNodeData.privateKey);
+  const nexts = graph.getChildren(data.id);
+  for(const next of nexts) {
+    const nextData = graph.queryNode(next)!.data;
+
+    const edge = graph.queryEdge(data.id, next)!;
+
+    const publicKey = tryDerivePublicKey(nextData.privateKey);
     if(!publicKey) return new ConfigResult(false, undefined, "无法从私钥派生公钥");
 
     config.appendLine("");
     config.appendLine("[Peer]");
-    config.appendLine(`# ${nextNodeData.label}`);
+    config.appendLine(`# ${nextData.label}`);
     config.appendLine(`PublicKey = ${ publicKey}`);
     
-    if(edge.data?.isTwoWayEdge || edge.source === node.id) {
+    if(edge.data?.isTwoWayEdge || edge.source === data.id) {
       if(edge.data?.persistentKeepalive) {
         config.appendLine(`PersistentKeepalive = ${edge.data.persistentKeepalive}`);
       }
 
-      if(!nextNodeData.listenAddress) {
-        return new ConfigResult(false, undefined, `节点 ${nextNodeData.label} 未设置监听地址，无法生成配置`);
+      if(!nextData.listenAddress) {
+        return new ConfigResult(false, undefined, `节点 ${nextData.label} 未设置监听地址，无法生成配置`);
       }
 
-      const parse = IPUtils.parse(`${nextNodeData.listenAddress}/0`);
+      const parse = IPUtils.parse(`${nextData.listenAddress}/0`);
       if(!parse.cidr) {
-        return new ConfigResult(false, undefined, `节点 ${nextNodeData.label} 的监听地址无效`);
+        return new ConfigResult(false, undefined, `节点 ${nextData.label} 的监听地址无效`);
       }
 
-      const listenAddress = parse.cidr.version === 'IPv4' ? nextNodeData.listenAddress : `[${nextNodeData.listenAddress}]`;
-      const listenPort = nextNodeData.listenPort || settings.listenPort;
+      const listenAddress = parse.cidr.version === 'IPv4' ? nextData.listenAddress : `[${nextData.listenAddress}]`;
+      const listenPort = nextData.listenPort || settings.listenPort;
       config.appendLine(`EndPoint = ${listenAddress}:${listenPort}`);
     }
 
-    const subnets : Record<string, CIDR>[] = [];
-
-    try {
-      subnets.push(mapAddressToCIDR(nodeIds, nodeId => node.data.ipv4Address && getNode(nodeId)?.data.ipv4Address));
-      subnets.push(mapAddressToCIDR(nodeIds, nodeId => node.data.ipv6Address && getNode(nodeId)?.data.ipv6Address));
-    } catch(e) {
-      if(e instanceof Error) {
-        return new ConfigResult(false, undefined, e.message);
-      }
-    }
-    const allowIPs : string[] = [];
-    for(const subnetMap of subnets) {
-      const allCIDRs = nodeIds.flatMap(id => subnetMap[id] ? [subnetMap[id]] : []);
-      const targetCIDRs = groupNodeIds.flatMap(id => {
-        const cidr = subnetMap[id];
-        if(!cidr || disallowCIDRs.some(disallow => disallow.contains(cidr))) return [];
-        return [cidr];
-      });
-      const mergeResult = IPUtils.mergeCIDRs(allCIDRs, targetCIDRs);
-      if(!mergeResult) {
-        return new ConfigResult(false, undefined, `无法生成路由配置`);
-      }
-      mergeResult.forEach(cidr => {allowIPs.push(cidr.toString())});
-    }
-    if(allowIPs.length > 0) {
+    const allowIPs = allowIPsConfig.get(next);
+    if(allowIPs && allowIPs.length > 0) {
       config.appendLine(`AllowedIPs = ${allowIPs.join(', ')}`);
     }
   }
   
-  // console.log(config.toString());
-
   return new ConfigResult(true, config.toString());
 }
 
+function getSubnet(nodes: AppNode[], version: 'ipv4' | 'ipv6'): Result<SubnetInfo | undefined> {
+  const addresses: {nodeId: string, cidr: CIDR}[] = [];
+
+  for(const node of nodes) {
+    const address = version === 'ipv4' ? node.data.ipv4Address : node.data.ipv6Address;
+    if(!address) continue;
+    const result = IPUtils.parse(address);
+    const cidr = result.cidr;
+    if(!cidr) return Result.Error(result.error);
+    addresses.push({nodeId: node.id, cidr: cidr});
+  }
+
+  if(addresses.length === 0) return Result.Result(undefined);
+
+  const subnet: SubnetInfo = {subnet: addresses[0].cidr, nodes: []}
+  for(const address of addresses) {
+    const cidr = address.cidr;
+    if(!subnet.subnet.contains(cidr)) {
+      return Result.Error("不在同一子网下");
+    }
+     
+    subnet.nodes.push({...address, cidr: new CIDR(cidr.version, cidr.binary, version === 'ipv4' ? 32 : 128)});
+  }
+  return Result.Result(subnet);
+}
+
+
 export default function CustomNode({ 
   data, 
   selected
 }: NodeProps<AppNode>): ReactNode {
   const settings = useContext(SettingsContext);
-  const { getNode, getEdge, getEdges } = useReactFlow<AppNode, AppEdge>();
+  const { getNodes, getEdges } = useReactFlow<AppNode, AppEdge>();
 
   const handleGenerate = (node : NodeData) => {
-    const result = generateConfig(settings, node, getEdges, getEdge, getNode);
+    const graph = new AppGraph(getNodes, getEdges);
+    const nodes = getNodes();
+    let subnets: SubnetInfo[] = [];
+
+    const v4 = getSubnet(nodes, 'ipv4');
+    const v6 = getSubnet(nodes, 'ipv6');
+    if(!v4.isValid()) {
+      toast.error(`ipv4子网配置有误：${v4.errorInfo()}`);
+      return;
+    }
+    
+    if(!v6.isValid()) {
+      toast.error(`ipv6子网配置有误：${v6.errorInfo()}`);
+      return;
+    }
+
+    if(v4.result) subnets.push(v4.result);
+    if(v6.result) subnets.push(v6.result);
+    subnets = subnets.concat(settings.subnets);
+
+    const result = generateConfig(settings, node, graph, subnets);
     if(result.success && result.config) {
       navigator.clipboard.writeText(result.config).then(() => {
         toast.success("配置已复制到剪贴板");
diff --git a/src/components/NodeEditor.tsx b/src/components/NodeEditor.tsx
index 5ce6237..603e146 100644
--- a/src/components/NodeEditor.tsx
+++ b/src/components/NodeEditor.tsx
@@ -1,5 +1,6 @@
 import { useState, ReactNode } from 'react';
-import { NodeData, Settings, NodeDataUpdate } from '../types/graph';
+import { NodeData, NodeDataUpdate } from '../types/graph';
+import { Settings } from '../types/settings';
 import { generateWireGuardPrivateKey } from '../utils/wireguardConfig'
 import { IPUtils} from '../utils/iputils'
 import './FormEditor.css';
@@ -12,7 +13,7 @@ interface NodeEditorProps {
   onClose: () => void;
 }
 
-function Validate(updateData : NodeDataUpdate, settings : Settings) : string[] {
+function Validate(updateData : NodeDataUpdate) : string[] {
   const errors: string[] = [];
   const {ipv4Address, ipv6Address, mtu, listenPort} = updateData;
 
@@ -95,7 +96,7 @@ export default function NodeEditor({
       notes: notes
     }
 
-    const validation = Validate(updateData, settings);
+    const validation = Validate(updateData);
     setErrors(validation);
     if(validation.length > 0) {
       return ;
diff --git a/src/types/graph.ts b/src/types/graph.ts
index 19d2080..d1483b3 100644
--- a/src/types/graph.ts
+++ b/src/types/graph.ts
@@ -40,8 +40,8 @@ export class AppGraph {
   private readonly _getNextNodeIds = new Map<string, string[]>();
 
   constructor(
+    public readonly getNodes: GetNodes,
     public readonly getEdges: GetEdges,
-    public readonly getNodes: GetNodes
   ) {
     const getNextNodeIds = this._getNextNodeIds;
     const nodeIds = getNodes().map(node => node.id);
@@ -57,9 +57,21 @@ export class AppGraph {
     }
   }
 
+  queryNode(nodeId: string): AppNode | undefined {
+    return this.getNodes().find(n => n.id === nodeId);
+  }
 
-  private static checkConnected(graph: AppGraph): boolean {
-    const nodes = graph.getNodes();
+  queryEdge(source: string, target: string): AppEdge | undefined {
+    return this.getEdges().find(e => 
+      (e.source === source && e.target === target) || (e.target === source && e.source === target));
+  }
+
+  getChildren(nodeId: string) : string[] {
+    return this._getNextNodeIds.get(nodeId) ?? [];
+  }
+
+  private checkConnected(): boolean {
+    const nodes = this.getNodes();
     if(nodes.length === 0) return true;
 
     const visited = new Set<string>();
@@ -68,7 +80,7 @@ export class AppGraph {
     queue.push(first.id);
     visited.add(first.id);
 
-    const getNextNodeIds = graph._getNextNodeIds;
+    const getNextNodeIds = this._getNextNodeIds;
     while(queue.length > 0) {
       const curr = queue.shift()!;
       const next = getNextNodeIds.get(curr);
@@ -83,7 +95,24 @@ export class AppGraph {
     return visited.size === nodes.length;
   }
 
+
   getConnectedSubgraph(nodeIds: string[]): AppGraph | undefined {
-    const node
+    let completed = false;
+    let graph: AppGraph = this;
+    
+    while(!completed) {
+      completed = true;
+      const nodes = graph.getNodes();
+
+      for(const node of nodes) {
+        if(nodeIds.includes(node.id)) continue;
+        const newGraph = new AppGraph(() => this.getNodes().filter(n => n.id !== node.id), this.getEdges);
+        if(!newGraph.checkConnected()) continue;
+        graph = newGraph;
+        completed = false;
+      }
+    }
+
+    return graph;
   }
 }
\ No newline at end of file
diff --git a/src/utils/Result.ts b/src/utils/Result.ts
new file mode 100644
index 0000000..aaf776a
--- /dev/null
+++ b/src/utils/Result.ts
@@ -0,0 +1,26 @@
+export class Result<T> {
+    private constructor(
+        public readonly errors: string[],
+        public readonly result?: T,
+    ) {}
+
+    isValid(): boolean {
+        return this.errors.length === 0;
+    }
+
+    errorInfo(): string {
+        return this.errors.join("\n");
+    }
+
+    static Error<T>(error: string): Result<T> {
+        return new Result<T>([error]);
+    }
+
+    static Errors<T>(errors: string[]): Result<T> {
+        return new Result<T>(errors);
+    }
+
+    static Result<T>(result: T) {
+        return new Result<T>([], result);
+    }
+}
\ No newline at end of file