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--- a
+++ b/src/Common/CongestionDescriptor.cc
@@ -0,0 +1,59 @@
+//
+// 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/.
+// 
+
+#include <CongestionDescriptor.h>
+
+CongestionDescriptor::CongestionDescriptor()
+{
+    ConId.setSrcCepId(-1);
+    ConId.setDstCepId(-1);
+    ConId.setQoSId(0);
+}
+
+CongestionDescriptor::~CongestionDescriptor() {
+    ConId.setSrcCepId(-1);
+    ConId.setDstCepId(-1);
+    ConId.setQoSId(0);
+}
+
+ConnectionId& CongestionDescriptor::getConnectionId() {
+    return ConId;
+}
+
+CongestionDescriptor::CongestionDescriptor(int srcCepId, int dstCepId,
+        unsigned short qosId)
+{
+    ConId.setSrcCepId(srcCepId);
+    ConId.setDstCepId(dstCepId);
+    ConId.setQoSId(qosId);
+}
+
+void CongestionDescriptor::setConnectionId(const ConnectionId& conId) {
+    ConId = conId;
+}
+
+std::string CongestionDescriptor::getCongesDescrName() const {
+    std::stringstream os;
+    os << ConId.getSrcCepId() << "<=>" << ConId.getDstCepId();
+    return os.str();
+}
+
+CongestionDescriptor* CongestionDescriptor::dup() const {
+    CongestionDescriptor* congDesc = new CongestionDescriptor();
+    congDesc->getConnectionId().setSrcCepId(ConId.getSrcCepId());
+    congDesc->getConnectionId().setDstCepId(ConId.getDstCepId());
+    congDesc->getConnectionId().setQoSId(ConId.getQoSId());
+    return congDesc;
+}