--- a
+++ b/src/policies/DIF/Routing/SimpleRouting/IntSimpleRouting.h
@@ -0,0 +1,46 @@
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Lesser General Public License for more details.
+// 
+// You should have received a copy of the GNU Lesser General Public License
+// along with this program.  If not, see http://www.gnu.org/licenses/.
+// 
+
+#ifndef IntSimpleRouting_H_
+#define IntSimpleRouting_H_
+
+#include <IntRouting.h>
+#include <string>
+
+typedef std::pair<unsigned short, std::string> qosPaddr;
+typedef std::map<qosPaddr, std::string> entries2Next;
+typedef std::pair<qosPaddr, std::string> entries2NextItem;
+typedef entries2Next::iterator entries2NextIt;
+
+class IntSimpleRouting: public IntRouting {
+public:
+    //Process a Routing Update, return true => inform FWDG of the update
+    virtual bool processUpdate(IntRoutingUpdate * update) = 0;
+
+
+    //Flow inserted/removed
+    virtual void insertFlow(const Address &addr, const std::string &dst, const unsigned short &qos, const unsigned short &metric) = 0;
+    virtual void removeFlow(const Address &addr, const std::string &dst, const unsigned short &qos) = 0;
+
+    //Get Changes
+    virtual entries2Next getChanges() = 0;
+    virtual entries2Next getAll() = 0;
+
+protected:
+    // Called after initialize
+    virtual void onPolicyInit() = 0;
+};
+
+#endif /* IntSimpleRouting_H_ */