diff --git a/model/rocketfuel-weights-reader.cc b/model/rocketfuel-weights-reader.cc
index 246d1b0..ac7f6b1 100644
--- a/model/rocketfuel-weights-reader.cc
+++ b/model/rocketfuel-weights-reader.cc
@@ -50,518 +50,114 @@
 #include <iomanip>
 #include <set>
 
+using namespace std;
+
+NS_LOG_COMPONENT_DEFINE ("RocketfuelWeightsReader");
 
 namespace ns3 {
     
-    NS_LOG_COMPONENT_DEFINE ("RocketfuelWeightsReader");
-    
-    NS_OBJECT_ENSURE_REGISTERED (RocketfuelWeightsReader);
-    
-    TypeId RocketfuelWeightsReader::GetTypeId (void)
-    {
-        static TypeId tid = TypeId ("ns3::RocketfuelWeightsReader")
-        .SetParent<Object> ()
-        ;
-        return tid;
-    }
-    
-    RocketfuelWeightsReader::RocketfuelWeightsReader ()
-    {
-        NS_LOG_FUNCTION (this);
-    }
-    
-    RocketfuelWeightsReader::~RocketfuelWeightsReader ()
-    {
-        NS_LOG_FUNCTION (this);
-    }
-    
-    /* uid @loc [+] [bb] (num_neigh) [&ext] -> <nuid-1> <nuid-2> ... {-euid} ... =name[!] rn */
-    
-#define REGMATCH_MAX 16
-    
-#define START "^"
-#define END "$"
-#define SPACE "[ \t]+"
-#define MAYSPACE "[ \t]*"
-    
-#define ROCKETFUEL_MAPS_LINE \
-START "(-*[0-9]+)" SPACE "(@[?A-Za-z0-9,+]+)" SPACE \
-"(\\+)*" MAYSPACE "(bb)*" MAYSPACE \
-"\\(([0-9]+)\\)" SPACE "(&[0-9]+)*" MAYSPACE \
-"->" MAYSPACE "(<[0-9 \t<>]+>)*" MAYSPACE \
-"(\\{-[0-9\\{\\} \t-]+\\})*" SPACE \
-"=([A-Za-z0-9.!-]+)" SPACE "r([0-9])" \
-MAYSPACE END
-    
-#define ROCKETFUEL_WEIGHTS_LINE \
-START "([^ \t]+)" SPACE "([^ \t]+)" SPACE "([0-9.]+)" MAYSPACE END
-    
-    int linksNumber = 0;
-    int nodesNumber = 0;
-    std::map<std::string, Ptr<Node> > nodeMap;
-    
-    NodeContainer
-    RocketfuelWeightsReader::GenerateFromWeightsFile (int argc, char *argv[], char *argl[])
-    {
-        /* uid @loc [+] [bb] (num_neigh) [&ext] -> <nuid-1> <nuid-2> ... {-euid} ... =name[!] rn */
-        std::string sname;
-        std::string tname;
-        char *endptr;
-        NodeContainer nodes;
-        
-        sname = argv[0];
-        tname = argv[1];
-        double v = strtod (argv[2], &endptr); // weight
-        double l = strtod (argl[2], &endptr); //latency
-        // cast v to void , to suppress 'v' set but not used compiler warning
-        //(void) v;
-        
-        
-        
-        if (*endptr != '\0')
-        {
-            NS_LOG_WARN ("invalid weight: " << argv[2]);
-            return nodes;
-        }
-        
-        // Create node and link
-        if (!sname.empty () && !tname.empty ())
-        {
-            if (nodeMap[sname] == 0)
-            {
-                Ptr<Node> tmpNode = CreateObject<Node> ();
-                nodeMap[sname] = tmpNode;
-                nodes.Add (tmpNode);
-                nodesNumber++;
-            }
-            
-            if (nodeMap[tname] == 0)
-            {
-                Ptr<Node> tmpNode = CreateObject<Node> ();
-                nodeMap[tname] = tmpNode;
-                nodes.Add (tmpNode);
-                nodesNumber++;
-            }
-            NS_LOG_INFO (linksNumber << ":" << nodesNumber << " From: " << sname << " to: " << tname);
-            TopologyReader::ConstLinksIterator iter;
-            bool found = false;
-            for (iter = LinksBegin (); iter != LinksEnd (); iter++)
-            {
-                if ((iter->GetFromNode () == nodeMap[tname])
-                    && (iter->GetToNode () == nodeMap[sname]))
-                {
-                    found = true;
-                    break;
-                }
-            }
-            
-            if (!found)
-            {
-                Link link (nodeMap[sname], sname, nodeMap[tname], tname);
-                
-                std::ostringstream s;
-                s << std::setprecision(2) << v;
-                std::string ss = s.str();
-                link.SetAttribute ("OSPF", ss);
-                
-                std::ostringstream s2;
-                s2 << std::setprecision(2) << l;
-                std::string ss2 = s2.str();
-                link.SetAttribute("Latency", ss2);
-                NS_LOG_INFO("Written Latency = " << ss2);
-                
-                
-                AddLink (link);
-                linksNumber++;
-            }
-        }
-        return nodes;
-    }
-    
-    enum RocketfuelWeightsReader::RF_FileType
-    RocketfuelWeightsReader::GetFileType (const char *line)
-    {
-        int ret;
-        regmatch_t regmatch[REGMATCH_MAX];
-        regex_t regex;
-        char errbuf[512];
-        
-        // Check whether MAPS file or not
-        ret = regcomp (&regex, ROCKETFUEL_MAPS_LINE, REG_EXTENDED | REG_NEWLINE);
-        if (ret != 0)
-        {
-            regerror (ret, &regex, errbuf, sizeof (errbuf));
-            return RF_UNKNOWN;
-        }
-        ret = regexec (&regex, line, REGMATCH_MAX, regmatch, 0);
-        if (ret != REG_NOMATCH)
-        {
-            regfree (&regex);
-            return RF_MAPS;
-        }
-        regfree (&regex);
-        
-        // Check whether Weights file or not
-        ret = regcomp (&regex, ROCKETFUEL_WEIGHTS_LINE, REG_EXTENDED | REG_NEWLINE);
-        if (ret != 0)
-        {
-            regerror (ret, &regex, errbuf, sizeof (errbuf));
-            return RF_UNKNOWN;
-        }
-        ret = regexec (&regex, line, REGMATCH_MAX, regmatch, 0);
-        if (ret != REG_NOMATCH)
-        {
-            regfree (&regex);
-            return RF_WEIGHTS;
-        }
-        regfree (&regex);
-        
-        return RF_UNKNOWN;
-    }
-    
-    NodeContainer
-    RocketfuelWeightsReader::Read (void)
-    {
-        NodeContainer nodes;
-        NS_LOG_INFO("Not implemented");
-        return nodes;
-    }
-    
-    NodeContainer
-    RocketfuelWeightsReader::Read (std::string latenciesFile)
-    {
-        std::ifstream topgen;
-        topgen.open (GetFileName ().c_str ());
-        NodeContainer nodes;
-        
-        std::ifstream latencies;
-        latencies.open(latenciesFile.c_str());
-        
-        std::istringstream lineBuffer;
-        std::istringstream lineBuffer2;
-        std::string line;
-        std::string line2;
-        
-        int lineNumber = 0;
-        enum RF_FileType ftype = RF_UNKNOWN;
-        char errbuf[512];
-        
-        if (!topgen.is_open ())
-        {
-            NS_LOG_WARN ("Couldn't open the file " << GetFileName ());
-            return nodes;
-        }
-        
-        if (!latencies.is_open ())
-        {
-            NS_LOG_WARN ("Couldn't open Latencies file " << latenciesFile);
-            return nodes;
-        }
-        
-        while (!topgen.eof ())
-        {
-            int ret;
-            int argc;
-            char *argv[REGMATCH_MAX];
-            char *argl[REGMATCH_MAX];
-            char *buf;
-            char *buf2;
-            
-            lineNumber++;
-            line.clear ();
-            line2.clear ();
-            lineBuffer.clear ();
-            lineBuffer2.clear ();
-            
-            getline (topgen, line);
-            getline (latencies, line2);
-            buf = (char *)line.c_str ();
-            buf2 = (char *)line2.c_str ();
-            
-            if (lineNumber == 1)
-            {
-                ftype = GetFileType (buf);
-                if (ftype == RF_UNKNOWN)
-                {
-                    NS_LOG_INFO ("Unknown File Format (" << GetFileName () << ")");
-                    break;
-                }
-            }
-            
-            regmatch_t regmatch[REGMATCH_MAX];
-            regex_t regex;
-            
-            if (ftype == RF_MAPS)
-            {
-                ret = regcomp (&regex, ROCKETFUEL_MAPS_LINE, REG_EXTENDED | REG_NEWLINE);
-                if (ret != 0)
-                {
-                    regerror (ret, &regex, errbuf, sizeof (errbuf));
-                    regfree (&regex);
-                    break;
-                }
-                
-                ret = regexec (&regex, buf, REGMATCH_MAX, regmatch, 0);
-                if (ret == REG_NOMATCH)
-                {
-                    NS_LOG_WARN ("match failed (maps file): %s" << buf);
-                    regfree (&regex);
-                    break;
-                }
-            }
-            else if (ftype == RF_WEIGHTS)
-            {
-                ret = regcomp (&regex, ROCKETFUEL_WEIGHTS_LINE, REG_EXTENDED | REG_NEWLINE);
-                if (ret != 0)
-                {
-                    regerror (ret, &regex, errbuf, sizeof (errbuf));
-                    regfree (&regex);
-                    break;
-                }
-                
-                ret = regexec (&regex, buf, REGMATCH_MAX, regmatch, 0);
-                regexec (&regex, buf2, REGMATCH_MAX, regmatch, 0);
-                if (ret == REG_NOMATCH)
-                {
-                    NS_LOG_WARN ("match failed (weights file): %s" << buf);
-                    regfree (&regex);
-                    break;
-                }
-            }
-            
-            line = buf;
-            line2 = buf2;
-            argc = 0;
-            
-            /* regmatch[0] is the entire strings that matched */
-            for (int i = 1; i < REGMATCH_MAX; i++)
-            {
-                if (regmatch[i].rm_so == -1)
-                {
-                    argv[i - 1] = NULL;
-                    argl[i - 1] = NULL;
-                }
-                else
-                {
-                    line[regmatch[i].rm_eo] = '\0';
-                    line2[regmatch[i].rm_eo] = '\0';
-                    argv[i - 1] = &line[regmatch[i].rm_so];
-                    argl[i - 1] = &line2[regmatch[i].rm_so];
-                    argc = i;
-                }
-            }
-            
-            if (ftype == RF_MAPS)
-            {
-                NS_LOG_INFO("MAPS FILE is not supported");
-                //nodes.Add (GenerateFromMapsFile (argc, argv));
-            }
-            else if (ftype == RF_WEIGHTS)
-            {
-                nodes.Add (GenerateFromWeightsFile (argc, argv, argl));
-            }
-            else
-            {
-                NS_LOG_WARN ("Unsupported file format (only Maps/Weights are supported)");
-            }
-            
-            regfree (&regex);
-        }
-        
-        
-        topgen.close ();
-        latencies.close ();
-        NS_LOG_INFO ("Rocketfuel topology created with " << nodesNumber << " nodes and " << linksNumber << " links");
-        return nodes;
-    }
-    
-    
-void
-RocketfuelWeightsReader::ApplySettings(NetDeviceContainer* ndc, NodeContainer* nc)
+RocketfuelWeightsReader::RocketfuelWeightsReader ()
 {
-  InternetStackHelper stack;
-  Ipv4AddressHelper address;
-  address.SetBase ("10.1.0.0", "255.255.0.0");
-        
-  Ipv4GlobalRoutingHelper ipv4RoutingHelper ("ns3::Ipv4GlobalRoutingOrderedNexthops");
-  stack.SetRoutingHelper (ipv4RoutingHelper);
-        
-  //This loop passes all links and checks if ipv4 is installed on the node
-  // if not, it installs. 
-  // We can't use stack.Install(nc) because in nc there are duplicates and assertion fails
-        TopologyReader::ConstLinksIterator iter;
-        int j = 0;
-        for ( iter = this->LinksBegin (); iter != this->LinksEnd (); iter++, j++ )
-        {
-            NodeContainer twoNodes = nc[j];
-            
-            Ptr<Node> nd = twoNodes.Get(0);
-            if(nd==NULL)
-                NS_LOG_INFO("nd = null");
-            
-            Ptr<Node> nd2 = twoNodes.Get(1);
-            if(nd2==NULL)
-                NS_LOG_INFO("nd2 = null");
-            
-            Ptr<Ipv4> ipv4 = nd->GetObject<Ipv4>();
-            if(ipv4 == 0)
-            {
-                NS_LOG_INFO("ipv4 = null");
-                stack.Install(nd);
-            }
-            
-            Ptr<Ipv4> ipv42 = nd2->GetObject<Ipv4>();
-            if(ipv42 == 0)
-            {
-                NS_LOG_INFO("ipv42 = null");
-                stack.Install(nd2);
-            }
-            
-            //NS_LOG_INFO("#netdevices = " << nd->GetNDevices());
-            //NS_LOG_INFO("#netdevices = " << nd2->GetNDevices());
-        }
-        
-        NS_LOG_INFO("ITER2");
-        
-        PointToPointHelper p2p;
-        TopologyReader::ConstLinksIterator iter2;
-        int i = 0;
-        for ( iter2 = this->LinksBegin (); iter2 != this->LinksEnd (); iter2++, i++ )
-        {
-            p2p.SetDeviceAttribute("DataRate", StringValue("9920000Kbps"));
-            //p2p.SetChannelAttribute("Delay", StringValue("10ms"));
-            NS_LOG_INFO("Latency = " + iter2->GetAttribute("Latency")+"ms");
-            p2p.SetChannelAttribute("Delay", StringValue(iter2->GetAttribute("Latency")+"ms"));
-            
+  NS_LOG_FUNCTION (this);
+}
+    
+RocketfuelWeightsReader::~RocketfuelWeightsReader ()
+{
+  NS_LOG_FUNCTION (this);
+}
 
-            p2p.SetQueue("ns3::DropTailQueue","MaxPackets",StringValue("100"));
-            ndc[i] = p2p.Install(nc[i]);
-            
-            
-            NodeContainer twoNodes = nc[i];
-            
-            Ptr<Node> nd = twoNodes.Get(0);
-            if(nd==NULL)
-                NS_LOG_INFO("nd = null");
-            
-            
-            
-            Ptr<Node> nd2 = twoNodes.Get(1);
-            if(nd2==NULL)
-                NS_LOG_INFO("nd2 = null");
-            
-            //NS_LOG_INFO("1");
-            NS_LOG_INFO("#netdevices = " << nd->GetNDevices());
-            NS_LOG_INFO("#netdevices = " << nd2->GetNDevices());
-            
-            Ptr<NetDevice> device = nd->GetDevice(nd->GetNDevices()-1)->GetObject<PointToPointNetDevice> ();
-            
-            if(device==NULL)
-                NS_LOG_INFO("device = 0");
-            
-            std::string ospf = iter2->GetAttribute("OSPF");
-            double metric_d = atof(ospf.c_str());
-            uint16_t metric = static_cast<int>(metric_d * 10); 
-            NS_LOG_INFO("OSPF metric = " << metric);
-            
-            {
-                NetDeviceContainer* temp = new NetDeviceContainer[1];
-                temp->Add(device);
-                address.Assign (*temp);
-            }
-            
-            Ptr<Ipv4> ipv4 = nd->GetObject<Ipv4>();
-            if(ipv4 == 0)
-            {
-                NS_LOG_INFO("ipv4 = null");
-                //stack.Install(nd);
-                /*NetDeviceContainer* temp = new NetDeviceContainer[1];
-                 temp->Add(device);
-                 address.Assign (*temp);
-                 ipv4 = nd->GetObject<Ipv4>();*/
-            }
-            
-            NS_LOG_INFO("Before GetID");
-            int32_t interfaceId = ipv4->GetInterfaceForDevice(device);
-            NS_LOG_INFO("InterfaceID = " << interfaceId);
-            ipv4->SetMetric(interfaceId,metric);
-            
-            
-            
-            
-            
-            /*Ptr<Ipv4> ipv4 = nd->GetObject<Ipv4>();
-             
-             if(ipv4 == 0)
-             NS_LOG_INFO("ipv4 = null");
-             int32_t interfaceId = ipv4->GetInterfaceForDevice(device);
-             ipv4->SetMetric(interfaceId,metric);*/
-            
-            //Ptr<Ipv4Interface> interface = nd->GetDevice(nd->GetNDevices()-1)->GetObject<Ipv4Interface> ();
-            //ipv4->SetMetric(metric);
-            
-            //NS_LOG_INFO("2");
-            
-            Ptr<NetDevice> device2 = nd2->GetDevice(nd2->GetNDevices()-1)->GetObject<PointToPointNetDevice> ();
-            
-            if(device2==NULL)
-                NS_LOG_INFO("device2 = 0");
-            
-            {
-                NetDeviceContainer* temp = new NetDeviceContainer[1];
-                temp->Add(device2);
-                address.Assign (*temp);
-            }
-            
-            Ptr<Ipv4> ipv42 = nd2->GetObject<Ipv4>();
-            if(ipv42 == 0)
-            {
-                NS_LOG_INFO("ipv42 = null");
-                /*stack.Install(nd2);
-                 NetDeviceContainer* temp = new NetDeviceContainer[1];
-                 temp->Add(device2);
-                 address.Assign (*temp);
-                 ipv42 = nd2->GetObject<Ipv4>();*/
-            }
-            
-            NS_LOG_INFO("Before GetID");
-            interfaceId = ipv42->GetInterfaceForDevice(device2);
-            NS_LOG_INFO("InterfaceID = " << interfaceId);
-            ipv42->SetMetric(interfaceId,metric);
-            
-            
-            
-            /*PointerValue tmp1;
-            device->GetAttribute ("TxQueue", tmp1);
-            //NS_LOG_INFO("2.5");
-            Ptr<Object> txQueue1 = tmp1.GetObject ();
-            
-            PointerValue tmp2;
-            device2->GetAttribute ("TxQueue", tmp2);
-            Ptr<Object> txQueue2 = tmp2.GetObject ();
-            //NS_LOG_INFO("3");
-            Ptr<DropTailQueue> dtq1 = txQueue1->GetObject <DropTailQueue> ();
-            NS_ASSERT (dtq1 != 0);
-            
-            Ptr<DropTailQueue> dtq2 = txQueue2->GetObject <DropTailQueue> ();
-            NS_ASSERT (dtq2 != 0);
-            
-            std::string queuesize1 = iter2->GetAttribute("QueueSizeNode1");
-            std::string queuesize2 = iter2->GetAttribute("QueueSizeNode2");
-            //NS_LOG_INFO("4");
-            txQueue1->SetAttribute("MaxPackets", UintegerValue (atoi(queuesize1.c_str())));
-            txQueue2->SetAttribute("MaxPackets", UintegerValue (atoi(queuesize2.c_str())));
-            
-            UintegerValue limit;
-            txQueue1->GetAttribute ("MaxPackets", limit);
-            NS_LOG_INFO ("NetDevice #"<< device->GetIfIndex() << "has queue limit " << limit.Get () << " packets");
-            
-            txQueue2->GetAttribute ("MaxPackets", limit);
-            NS_LOG_INFO ("NetDevice #"<< device2->GetIfIndex() << "has queue limit " << limit.Get () << " packets");*/
-        }
+void
+RocketfuelWeightsReader::SetFileType (uint8_t inputType)
+{
+  m_inputType = inputType;
+}
+
+NodeContainer
+RocketfuelWeightsReader::Read ()
+{
+  ifstream topgen;
+  topgen.open (GetFileName ().c_str ());
+  NodeContainer nodes;
+        
+  if ( !topgen.is_open () )
+    {
+      NS_LOG_ERROR ("Cannot open file " << GetFileName () << " for reading");
+      return nodes;
     }
 
+  map<string, set<string> > processedLinks; // to eliminate duplications
+  bool repeatedRun = LinksSize () > 0;
+  std::list<Link>::iterator linkIterator = m_linksList.begin ();
+  
+  while (!topgen.eof ())
+    {
+      string line;
+      getline (topgen,line);
+      if (line == "") continue;
+      if (line[0] == '#') continue; // comments
+
+      // NS_LOG_DEBUG ("Input: [" << line << "]");
+      
+      istringstream lineBuffer (line);
+      string from, to, attribute;
+
+      lineBuffer >> from >> to >> attribute;
+
+      if (processedLinks[to].size () != 0 &&
+          processedLinks[to].find (from) != processedLinks[to].end ())
+        {
+          continue; // duplicated link
+        }
+      processedLinks[from].insert (to);
+      
+      Ptr<Node> fromNode = Names::Find<Node> (m_path, from);
+      if (fromNode == 0)
+        {
+          fromNode = CreateNode (from);
+          nodes.Add (fromNode);
+        }
+
+      Ptr<Node> toNode   = Names::Find<Node> (m_path, to);
+      if (toNode == 0)
+        {
+          toNode = CreateNode (to);
+          nodes.Add (toNode);
+        }
+
+      Link *link;
+      if (!repeatedRun)
+        link = new Link (fromNode, from, toNode, to);
+      else
+        {
+          NS_ASSERT (linkIterator != m_linksList.end ());
+          link = &(*linkIterator);
+
+          linkIterator++;
+        }
+
+      switch (m_inputType)
+        {
+        case WEIGHTS:
+          link->SetAttribute ("OSPF", attribute);
+          break;
+        case LATENCIES:
+          link->SetAttribute ("Delay", attribute);
+          break;
+        default:
+          ; //
+        }
+
+      NS_LOG_DEBUG ("Link " << from << " <==> " << to << " / " << attribute);
+      if (!repeatedRun)
+        {
+          AddLink (*link);
+          delete link;
+        }
+    }
+        
+  topgen.close ();
+  NS_LOG_INFO ("Rocketfuel topology created with " << nodes.GetN () << " nodes and " << LinksSize () << " links");
+  return nodes;
+}
     
 } /* namespace ns3 */
-
-