--- a/src/routing/global-routing/global-route-manager-impl.cc	Tue Aug 11 22:35:45 2009 +0800
+++ a/src/routing/global-routing/global-route-manager-impl.cc	Tue Aug 11 22:36:08 2009 +0800
@@ -730,6 +730,7 @@ 
 //
 // Walk the list of nodes in the system.
 //
+  NS_LOG_INFO ("About to start SPF calculation");
   for (NodeList::Iterator i = NodeList::Begin (); i != NodeList::End (); i++)
     {
       Ptr<Node> node = *i;
@@ -744,10 +745,11 @@ 
 // algorithms.
 //
       if (rtr && rtr->GetNumLSAs () )
-        {
-          SPFCalculate (rtr->GetRouterId ());
+        {          
+          SPFCalculate (rtr->GetRouterId ());          
         }
     }
+  NS_LOG_INFO ("Finished SPF calculation");
 }
 
 //