diff --git a/src/nlsr_lsa.hpp b/src/nlsr_lsa.hpp
new file mode 100644
index 0000000..0f3e528
--- /dev/null
+++ b/src/nlsr_lsa.hpp
@@ -0,0 +1,194 @@
+#ifndef NLSR_LSA_HPP
+#define NLSR_LSA_HPP
+
+#include "nlsr_adjacent.hpp"
+#include "nlsr_npl.hpp"
+#include "nlsr_adl.hpp"
+
+using namespace std;
+
+class Lsa{
+public:
+	Lsa()
+		: origRouter()
+		, lsSeqNo()
+		, lifeTime()
+	{
+	}	
+
+
+	void setLsType(uint8_t lst)
+	{
+		lsType=lst;
+	}
+
+	uint8_t getLsType()
+	{
+		return lsType;
+	}
+
+	void setLsSeqNo(uint32_t lsn)
+	{
+		lsSeqNo=lsn;
+	}
+
+	uint32_t getLsSeqNo()
+	{
+		return lsSeqNo;
+	}
+
+	string& getOrigRouter()
+	{
+		return origRouter;
+	}
+
+	void setOrigRouter(string& org)
+	{
+		origRouter=org;
+	}
+
+	uint32_t getLifeTime()
+	{
+		return lifeTime;
+	}
+
+	void setLifeTime(uint32_t lt)
+	{
+		lifeTime=lt;
+	}
+	//string getLsaKey();
+protected:
+	string origRouter;
+	uint8_t lsType;
+	uint32_t lsSeqNo;
+	uint32_t lifeTime;
+};
+
+class NameLsa:public Lsa{
+public:
+	NameLsa()
+		: Lsa()
+		, npl()
+	{
+		setLsType(1);
+	}
+
+	NameLsa(string origR, uint8_t lst, uint32_t lsn, uint32_t lt, Npl npl);
+
+	Npl& getNpl(){
+		return npl;
+	}
+
+	void addNameToLsa(string& name)
+	{
+		npl.insertIntoNpl(name);
+	}
+
+	void removeNameFromLsa(string& name)
+	{
+		npl.removeFromNpl(name);
+	}
+
+	string getNameLsaKey();
+
+	string getNameLsaData();
+	
+private:
+	Npl npl;
+	
+};
+
+std::ostream& 
+operator<<(std::ostream& os, NameLsa& nLsa);
+
+class AdjLsa: public Lsa{
+public:
+	AdjLsa()
+		: Lsa()
+		, adl()
+	{
+		setLsType(2);
+	}
+
+	AdjLsa(string origR, uint8_t lst, uint32_t lsn, uint32_t lt, 
+	                                                        uint32_t nl ,Adl padl);
+	Adl& getAdl(){
+		return adl;
+	}
+
+	void addAdjacentToLsa(Adjacent adj)
+	{
+		adl.insert(adj);
+	}
+	string getAdjLsaKey();
+	string getAdjLsaData();
+	uint32_t getNoLink()
+	{
+		return noLink;
+	}
+
+	bool isLsaContentEqual(AdjLsa& alsa);
+	void addNptEntriesForAdjLsa(nlsr& pnlsr);
+	void removeNptEntriesForAdjLsa(nlsr& pnlsr);
+
+private:
+	uint32_t noLink;
+	Adl adl;
+};
+
+std::ostream& 
+operator<<(std::ostream& os, AdjLsa& aLsa);
+
+class CorLsa:public Lsa{
+public:
+	CorLsa()
+		:Lsa()
+	{
+		setLsType(3);
+	}
+
+	CorLsa(string origR, uint8_t lst, uint32_t lsn, uint32_t lt
+	      																							, double r, double theta);
+	string getCorLsaKey();
+	string getCorLsaData();
+	
+	double getCorRadius()
+	{
+		if ( corRad >= 0 )
+		{	
+			return corRad;
+		}
+		else 
+		{
+			return -1;
+		}
+	}
+	
+	void setCorRadius(double cr)
+	{
+		corRad=cr;
+	}
+
+	double getCorTheta()
+	{
+		return corTheta;
+	}
+
+	void setCorTheta(double ct){
+		corTheta=ct;
+	}
+
+	bool isLsaContentEqual(CorLsa& clsa);
+private:
+	double corRad;
+	double corTheta;
+
+};
+
+std::ostream& 
+operator<<(std::ostream& os, CorLsa& cLsa);
+
+
+
+
+#endif