diff -r 702db66f4011 src/visualizer/model/visual-simulator-impl.cc
--- a/src/visualizer/model/visual-simulator-impl.cc	Sun Mar 19 21:02:51 2017 +0100
+++ b/src/visualizer/model/visual-simulator-impl.cc	Thu Mar 23 13:15:41 2017 +0530
@@ -108,17 +108,20 @@
   return m_simulator->IsFinished ();
 }
 
+
 void
 VisualSimulatorImpl::Run (void)
 {
+  std::ostringstream str; 
+  str << m_stopTime;
+  std::string pystring = std::string("import visualizer\nvisualizer.start(\'") + str.str () + std::string ("\');\n");
   if (!Py_IsInitialized ()) 
     {
       const char *argv[] = { "python", NULL};
       Py_Initialize ();
       PySys_SetArgv (1, (char**) argv);
       PyRun_SimpleString (
-                          "import visualizer\n"
-                          "visualizer.start();\n"
+                          pystring.c_str()
                           );
     }
   else
@@ -126,14 +129,14 @@
       PyGILState_STATE __py_gil_state = PyGILState_Ensure ();
     
       PyRun_SimpleString (
-                          "import visualizer\n"
-                          "visualizer.start();\n"
+                          pystring.c_str()
                           );
 
       PyGILState_Release (__py_gil_state);
     }
 }
 
+
 void 
 VisualSimulatorImpl::Stop (void)
 {
@@ -143,6 +146,7 @@
 void 
 VisualSimulatorImpl::Stop (Time const &delay)
 {
+  m_stopTime = delay;
   m_simulator->Stop (delay);
 }
 
diff -r 702db66f4011 src/visualizer/model/visual-simulator-impl.h
--- a/src/visualizer/model/visual-simulator-impl.h	Sun Mar 19 21:02:51 2017 +0100
+++ b/src/visualizer/model/visual-simulator-impl.h	Thu Mar 23 13:15:41 2017 +0530
@@ -80,6 +80,7 @@
   Ptr<SimulatorImpl> m_simulator;
   ObjectFactory m_simulatorImplFactory;
 
+  Time m_stopTime;
 };
 
 } // namespace ns3
diff -r 702db66f4011 src/visualizer/visualizer/core.py
--- a/src/visualizer/visualizer/core.py	Sun Mar 19 21:02:51 2017 +0100
+++ b/src/visualizer/visualizer/core.py	Thu Mar 23 13:15:41 2017 +0530
@@ -365,6 +365,7 @@
         self.quit = False
         self.sim_helper = ns.visualizer.PyViz()
         self.pause_messages = []
+        self.simtime = ''
 
     def set_nodes_of_interest(self, nodes):
         self.lock.acquire()
@@ -372,9 +373,16 @@
             self.sim_helper.SetNodesOfInterest(nodes)
         finally:
             self.lock.release()
+
+    def set_sim_time (self, simtime):
+        self.simtime = simtime
         
     def run(self):
         while not self.quit:
+            if not self.simtime == '':
+                if ns.core.Simulator.Now () >= ns.core.Time(self.simtime):
+                    self.viz.play_button.set_sensitive(False)
+                    break
             #print "sim: Wait for go"
             self.go.wait() # wait until the main (view) thread gives us the go signal
             self.go.clear()
@@ -1185,6 +1193,9 @@
 
         gtk.main()
 
+    def setSimTime (self, simtime):
+        self.simulation.set_sim_time (simtime)
+
 
     def on_root_button_press_event(self, view, target, event):
         if event.button == 1:
@@ -1479,7 +1490,7 @@
     add_initialization_hook(hook)
 
 
-def start():
+def start(simtime):
     assert Visualizer.INSTANCE is None
     if _import_error is not None:
         import sys
@@ -1491,4 +1502,5 @@
     for hook, args in initialization_hooks:
         gobject.idle_add(hook, viz, *args)
     ns.network.Packet.EnablePrinting()
+    viz.setSimTime(simtime)
     viz.start()