diff --git a/src/communication/nlsr_dm.hpp b/src/communication/nlsr_dm.hpp
new file mode 100644
index 0000000..fdb45db
--- /dev/null
+++ b/src/communication/nlsr_dm.hpp
@@ -0,0 +1,40 @@
+#ifndef NLSR_DM_HPP
+#define NLSR_DM_HPP
+
+#include <ndn-cpp-dev/face.hpp>
+#include <ndn-cpp-dev/security/key-chain.hpp>
+#include <ndn-cpp-dev/util/scheduler.hpp>
+
+#include "nlsr_im.hpp"
+
+namespace nlsr
+{
+
+    using namespace ndn;
+    using namespace std;
+
+    class Nlsr;
+
+    class DataManager
+    {
+    public:
+        void processContent(Nlsr& pnlsr, const ndn::Interest &interest,
+                            const ndn::Data& data, interestManager& im);
+    private:
+        void processContentInfo(Nlsr& pnlsr, string& dataName,
+                                string& dataContent);
+        void processContentLsa(Nlsr& pnlsr, string& dataName,
+                               string& dataContent);
+        void processContentNameLsa(Nlsr& pnlsr, string lsaKey,
+                                   uint32_t lsSeqNo, string& dataContent);
+        void processContentAdjLsa(Nlsr& pnlsr, string lsaKey,
+                                  uint32_t lsSeqNo, string& dataContent);
+        void processContentCorLsa(Nlsr& pnlsr, string lsaKey,
+                                  uint32_t lsSeqNo, string& dataContent);
+        void processContentKeys(Nlsr& pnlsr, const ndn::Data& data);
+        
+
+    };
+
+}//namespace nlsr
+#endif