diff --git a/nlsr_lsdb.hpp b/nlsr_lsdb.hpp
index 9ba0729..62c91ee 100644
--- a/nlsr_lsdb.hpp
+++ b/nlsr_lsdb.hpp
@@ -11,6 +11,7 @@
 class Lsdb{
 public:
 	Lsdb()
+		: lsaRefreshTime(0)
 	{
 	}
 
@@ -38,6 +39,10 @@
 	std::pair<AdjLsa& , bool> getAdjLsa(string key);
 	std::list<AdjLsa>& getAdjLsdb();
 	void printAdjLsdb();
+
+	//void scheduleRefreshLsdb(nlsr& pnlsr, int interval);
+	void setLsaRefreshTime(int lrt);
+	void setThisRouterPrefix(string trp);
 	
 private:
 	bool addNameLsa(NameLsa &nlsa);
@@ -49,6 +54,13 @@
 
 	bool addAdjLsa(AdjLsa &alsa);
 	bool doesAdjLsaExist(string key);
+  
+	void scheduleNameLsaExpiration(nlsr& pnlsr, string key, int seqNo, int expTime);
+	void exprireOrRefreshNameLsa(nlsr& pnlsr, string lsaKey, int seqNo);
+	void scheduleAdjLsaExpiration(nlsr& pnlsr, string key, int seqNo, int expTime);
+	void exprireOrRefreshAdjLsa(nlsr& pnlsr, string lsaKey, int seqNo);
+	void scheduleCorLsaExpiration(nlsr& pnlsr, string key, int seqNo, int expTime);
+	void exprireOrRefreshCorLsa(nlsr& pnlsr, string lsaKey, int seqNo);
 	
 
 private:
@@ -56,6 +68,9 @@
 	std::list<AdjLsa> adjLsdb;
 	std::list<CorLsa> corLsdb;
 
+	int lsaRefreshTime;
+	string thisRouterPrefix;
+
 };
 
 #endif