Feat: 支持通过MAC地址进行邻居匹配和拓扑连线

- Neighbor模型添加RemoteMAC字段
- Device模型添加MACAddresses字段
- H3C解析器保存邻居MAC地址和设备所有接口MAC
- 拓扑构建支持三层匹配: IP -> 设备名 -> MAC地址
- 即使ARP表获取失败也能通过MAC地址自动连线

internal/device/h3c.go

@@ -41,6 +41,17 @@ func (p *H3CParser) Parse(device *models.Device, outputs []string) error {
 			fmt.Printf("Warning: parsed 0 interfaces for device %s (output length: %d)\n", 
 				device.IP, len(outputs[1]))
 		}
+		
+		// 收集所有接口的MAC地址（用于邻居匹配）
+		macSet := make(map[string]bool)
+		for _, iface := range device.Interfaces {
+			if iface.MAC != "" {
+				macSet[iface.MAC] = true
+			}
+		}
+		for mac := range macSet {
+			device.MACAddresses = append(device.MACAddresses, mac)
+		}
 	}
 	
 	// 解析ARP表用于MAC到IP映射（允许失败）
@@ -276,14 +287,16 @@ func (p *H3CParser) parseNeighbors(output string, arpTable map[string]string) []
 					// 格式: a4bb-6de2-62cd/MAC address
 					if macParts := strings.Split(value, "/"); len(macParts) > 0 {
 						mac := strings.TrimSpace(strings.ToLower(macParts[0]))
-						// 通过ARP表查找IP
+						// 保存MAC地址
+						currentNeighbor.RemoteMAC = mac
+						
+						// 通过ARP表查找IP（如果有）
 						if ip, ok := arpTable[mac]; ok {
 							currentNeighbor.RemoteIP = ip
 							currentNeighbor.RemoteDevice = ip
 						} else {
-							// 如果ARP表中没有，使用MAC地址作为标识
+							// 如果ARP表中没有，使用MAC地址作为标识（但RemoteIP仍为空）
 							currentNeighbor.RemoteDevice = mac
-							// 注意：RemoteIP为空，拓扑可能无法连线
 						}
 					}
 				}

internal/topology/builder.go

@@ -56,24 +56,41 @@ func (b *Builder) Build() models.TopologyGraph {
 	edgeMap := make(map[string]bool) // 用于去重
 	for _, device := range b.devices {
 		for _, neighbor := range device.Neighbors {
-			// 检查邻居是否在设备列表中
-			if _, exists := nodeMap[neighbor.RemoteIP]; !exists && neighbor.RemoteDevice != "" {
-				// 尝试通过设备名匹配
+			// 尝试匹配邻居设备
+			targetIP := neighbor.RemoteIP
+			
+			// 如果没有IP，尝试通过设备名匹配
+			if targetIP == "" && neighbor.RemoteDevice != "" {
 				for _, d := range b.devices {
 					if d.Hostname == neighbor.RemoteDevice {
-						neighbor.RemoteIP = d.IP
+						targetIP = d.IP
+						break
+					}
+				}
+			}
+			
+			// 如果还是没有，尝试通过MAC地址匹配（新增）
+			if targetIP == "" && neighbor.RemoteMAC != "" {
+				for _, d := range b.devices {
+					for _, mac := range d.MACAddresses {
+						if mac == neighbor.RemoteMAC {
+							targetIP = d.IP
+							break
+						}
+					}
+					if targetIP != "" {
 						break
 					}
 				}
 			}
 
-			if neighbor.RemoteIP == "" {
+			if targetIP == "" {
 				continue
 			}
 
 			// 创建唯一的边ID
-			edgeID := fmt.Sprintf("%s-%s-%s", device.IP, neighbor.LocalInterface, neighbor.RemoteIP)
-			reverseEdgeID := fmt.Sprintf("%s-%s-%s", neighbor.RemoteIP, neighbor.RemoteInterface, device.IP)
+			edgeID := fmt.Sprintf("%s-%s-%s", device.IP, neighbor.LocalInterface, targetIP)
+			reverseEdgeID := fmt.Sprintf("%s-%s-%s", targetIP, neighbor.RemoteInterface, device.IP)
 
 			// 避免重复边
 			if edgeMap[edgeID] || edgeMap[reverseEdgeID] {
@@ -83,7 +100,7 @@ func (b *Builder) Build() models.TopologyGraph {
 			edge := models.TopologyEdge{
 				ID:              edgeID,
 				Source:          device.IP,
-				Target:          neighbor.RemoteIP,
+				Target:          targetIP,
 				SourceInterface: neighbor.LocalInterface,
 				TargetInterface: neighbor.RemoteInterface,
 				Protocol:        neighbor.Protocol,

pkg/models/models.go

@@ -24,6 +24,7 @@ type Device struct {
 	Uptime       string      `json:"uptime"`
 	Interfaces   []Interface `json:"interfaces"`
 	Neighbors    []Neighbor  `json:"neighbors"`
+	MACAddresses []string    `json:"mac_addresses,omitempty"` // 设备的所有MAC地址（用于邻居匹配）
 	LastScanned  time.Time   `json:"last_scanned"`
 	ScanStatus   string      `json:"scan_status"` // success, failed, pending
 	ErrorMessage string      `json:"error_message,omitempty"`
@@ -46,11 +47,13 @@ type Interface struct {
 	OutPackets  int64  `json:"out_packets"`
 }
 
+// Neighbor 邻居设备信息
 // Neighbor 邻居设备信息
 type Neighbor struct {
 	LocalInterface  string `json:"local_interface"`
 	RemoteDevice    string `json:"remote_device"`
 	RemoteIP        string `json:"remote_ip"`
+	RemoteMAC       string `json:"remote_mac,omitempty"`  // 新增：邻居MAC地址
 	RemoteInterface string `json:"remote_interface"`
 	Protocol        string `json:"protocol"` // CDP, LLDP, ARP
 }