diff --git a/conf/springConfigXml/sugonSdnController.xml b/conf/springConfigXml/sugonSdnController.xml
index 02f8d5d414728e5aa10caeeb8b8a2e716712c5af..f0ff6ad0033d34701ad8e919f8661285c6428789 100644
--- a/conf/springConfigXml/sugonSdnController.xml
+++ b/conf/springConfigXml/sugonSdnController.xml
@@ -47,6 +47,7 @@
     <bean id="TfMigrateVmBackend" class="org.zstack.sugonSdnController.network.TfMigrateVmBackend">
         <zstack:plugin>
             <zstack:extension interface="org.zstack.header.vm.VmInstanceMigrateExtensionPoint" />
+            <zstack:extension interface="org.zstack.header.vm.VmPreMigrationExtensionPoint" />
         </zstack:plugin>
     </bean>
 
diff --git a/plugin/sugonSdnController/src/main/java/org/zstack/sugonSdnController/network/TfMigrateVmBackend.java b/plugin/sugonSdnController/src/main/java/org/zstack/sugonSdnController/network/TfMigrateVmBackend.java
index f54b1d608fbc243da8d5056556d8449563508e54..672e630f4335b56a2e5db450217a2e867a772e47 100644
--- a/plugin/sugonSdnController/src/main/java/org/zstack/sugonSdnController/network/TfMigrateVmBackend.java
+++ b/plugin/sugonSdnController/src/main/java/org/zstack/sugonSdnController/network/TfMigrateVmBackend.java
@@ -9,6 +9,7 @@ import org.zstack.core.cloudbus.CloudBus;
 import org.zstack.core.cloudbus.CloudBusCallBack;
 import org.zstack.core.db.DatabaseFacade;
 import org.zstack.core.db.Q;
+import org.zstack.header.core.Completion;
 import org.zstack.header.errorcode.ErrorCode;
 import org.zstack.header.errorcode.OperationFailureException;
 import org.zstack.header.host.HostConstant;
@@ -39,7 +40,7 @@ import java.util.stream.Collectors;
 import static org.zstack.core.Platform.operr;
 
 
-public class TfMigrateVmBackend implements VmInstanceMigrateExtensionPoint {
+public class TfMigrateVmBackend implements VmInstanceMigrateExtensionPoint, VmPreMigrationExtensionPoint {
     private static final CLogger logger = Utils.getLogger(TfMigrateVmBackend.class);
     public static final String NOTIFY_TF_NIC = "/vm/nodifytfnic";
     @Autowired
@@ -48,6 +49,7 @@ public class TfMigrateVmBackend implements VmInstanceMigrateExtensionPoint {
     private AccountManager accountMgr;
     @Autowired
     protected DatabaseFacade dbf;
+
     public static class SugonNicNotifyCmd extends KVMAgentCommands.AgentCommand {
         private String sugonSdnAction;
         private List<KVMAgentCommands.NicTO> nics;
@@ -91,6 +93,17 @@ public class TfMigrateVmBackend implements VmInstanceMigrateExtensionPoint {
 
     }
 
+
+    @Override
+    public void preVmMigration(VmInstanceInventory vm, VmMigrationType type, Completion completion) {
+//        try {
+//            notifySugonSdn(vm, vm.getHostUuid(), "add");
+//            completion.success();
+//        } catch (OperationFailureException e) {
+//            completion.fail(e.getErrorCode());
+//        }
+    }
+
     @Override
     public void preMigrateVm(VmInstanceInventory inv, String destHostUuid) {
         // pre支持物理机+本地存储迁移，以及物理机+共享存储迁移，before不支持物理机+共享存储的迁移