diff --git a/daemon/core/mobility.py b/daemon/core/mobility.py
index 8335cf37..3bbb510f 100644
--- a/daemon/core/mobility.py
+++ b/daemon/core/mobility.py
@@ -74,6 +74,20 @@ class MobilityManager(ConfigurableManager):
         ''' Reset all configs.
         '''
         self.clearconfig(nodenum=None)
+        
+    def setconfig(self, nodenum, conftype, values):
+        ''' Normal setconfig() with check for run-time updates for WLANs.
+        '''
+        super(MobilityManager, self).setconfig(nodenum, conftype, values)
+        if self.session is None:
+            return
+        if self.session.getstate() == coreapi.CORE_EVENT_RUNTIME_STATE:
+            try:
+                n = self.session.obj(nodenum)
+            except KeyError:
+                self.session.warn("Skipping mobility configuration for unknown"
+                                "node %d." % nodenum)
+            n.updatemodel(conftype, values)
 
     def register(self):
         ''' Register models as configurable object(s) with the Session object.
@@ -254,6 +268,13 @@ class WirelessModel(Configurable):
         
     def update(self, moved, moved_netifs):
         raise NotImplementedError
+        
+    def updateconfig(self, values):
+        ''' For run-time updates of model config.
+        Returns True when self._positioncallback() and self.setlinkparams()
+        should be invoked.
+        '''
+        return False
 
 
 class BasicRangeModel(WirelessModel):
@@ -296,6 +317,9 @@ class BasicRangeModel(WirelessModel):
         if self.verbose:
             self.session.info("Basic range model configured for WLAN %d using" \
                 " range %d" % (objid, self.range))
+        self.valuestolinkparams(values)
+
+    def valuestolinkparams(self, values):
         self.bw = int(self.valueof("bandwidth", values))
         if self.bw == 0.0:
             self.bw = None
@@ -408,6 +432,15 @@ class BasicRangeModel(WirelessModel):
             c = p1[2] - p2[2]
         return math.hypot(math.hypot(a, b), c)
         
+    def updateconfig(self, values):
+        ''' Configuration has changed during runtime.
+        MobilityManager.setconfig() -> WlanNode.updatemodel() -> 
+        WirelessModel.updateconfig()
+        '''
+        self.valuestolinkparams(values)
+        self.range = float(self.valueof("range",  values))        
+        return True
+        
     def linkmsg(self, netif, netif2, flags):
         ''' Create a wireless link/unlink API message.
         '''
diff --git a/daemon/core/netns/nodes.py b/daemon/core/netns/nodes.py
index 942fb419..5e29eda9 100644
--- a/daemon/core/netns/nodes.py
+++ b/daemon/core/netns/nodes.py
@@ -222,6 +222,25 @@ class WlanNode(LxBrNet):
         elif model._type == coreapi.CORE_TLV_REG_MOBILITY:
             self.mobility = model(session=self.session, objid=self.objid,
                                verbose=self.verbose, values=config)
+                               
+    def updatemodel(self, model_name, values):
+        ''' Allow for model updates during runtime (similar to setmodel().)
+        '''
+        if (self.verbose):
+            self.info("updating model %s" % model_name)
+        if self.model is None or self.model._name != model_name:
+            raise ValueError, "model %s not configured" % model_name
+        model = self.model
+        if model._type == coreapi.CORE_TLV_REG_WIRELESS:
+            if not model.updateconfig(values):
+                return
+            if self.model._positioncallback:
+                for netif in self.netifs():
+                    netif.poshook = self.model._positioncallback
+                    if netif.node is not None:
+                        (x,y,z) = netif.node.position.get()
+                        netif.poshook(netif, x, y, z)
+            self.model.setlinkparams()
         
     def tolinkmsgs(self, flags):
         msgs = LxBrNet.tolinkmsgs(self, flags)
diff --git a/gui/wlan.tcl b/gui/wlan.tcl
index 33a84e8a..e731614e 100755
--- a/gui/wlan.tcl
+++ b/gui/wlan.tcl
@@ -304,6 +304,7 @@ proc wlanConfigDialogHelper { wi target apply } {
     global systype
     global plugin_img_edit
     global g_selected_model
+    global oper_mode
 
     set wlan $target
     set emulation_type [lindex [getEmulPlugin $target] 1]
@@ -378,6 +379,10 @@ proc wlanConfigDialogHelper { wi target apply } {
 	# remove any range circles
 	updateRangeCircles $target 0
 
+	if { $oper_mode == "exec" } {
+	    # this generates Config Messages for updating the model parameters
+	    pluginCapsInitialize $target "mobmodel"
+	}
 	return
     }