diff --git a/src/nlsr_adl.hpp b/src/nlsr_adl.hpp
new file mode 100644
index 0000000..0d868ae
--- /dev/null
+++ b/src/nlsr_adl.hpp
@@ -0,0 +1,54 @@
+#ifndef NLSR_ADL_HPP
+#define NLSR_ADL_HPP
+
+#include <ndn-cpp-dev/face.hpp>
+#include "nlsr_adjacent.hpp"
+#include<list>
+
+class nlsr;
+
+using namespace std;
+
+class Adl{
+
+public:
+	Adl();
+	~Adl();
+	int insert(Adjacent& adj);
+	int updateAdjacentStatus(string adjName, int s);
+	int updateAdjacentLinkCost(string adjName, double lc);	
+	std::list<Adjacent>& getAdjList();
+	bool isNeighbor(string adjName);
+	void incrementTimedOutInterestCount(string& neighbor);
+	int getTimedOutInterestCount(string& neighbor);
+	int getStatusOfNeighbor(string& neighbor);
+	void setStatusOfNeighbor(string& neighbor, int status);
+	void setTimedOutInterestCount(string& neighbor, int count);
+	void addAdjacentsFromAdl(Adl& adl);
+
+	bool isAdjLsaBuildable(nlsr& pnlsr);
+	int getNumOfActiveNeighbor();
+	Adjacent getAdjacent(string adjName);
+
+	bool isAdlEqual(Adl &adl);
+
+	int getAdlSize()
+	{
+		return adjList.size();
+	}
+
+	void resetAdl()
+	{
+		if( adjList.size() > 0 )
+		{
+			adjList.clear();
+		}
+	}
+
+	void printAdl();
+
+private:	
+	std::list< Adjacent > adjList;
+};	
+
+#endif