--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sim/Topology.cc	Thu Apr 21 14:57:45 2011 +0100
@@ -0,0 +1,46 @@
+/*
+ *    Copyright 2004-2006 Intel Corporation
+ * 
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ * 
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <dtn-config.h>
+#endif
+
+#include "Topology.h"
+#include "Node.h"
+
+namespace dtnsim {
+
+Topology::NodeTable Topology::nodes_;
+
+Node*
+Topology::create_node(const char* name)
+{
+    Node* node = new Node(name);
+    node->do_init();
+    nodes_[name] = node;
+    return node;
+}
+
+Node*
+Topology::find_node(const char* name)
+{
+    NodeTable::iterator iter = nodes_.find(name);
+    if (iter == nodes_.end())
+        return NULL;
+
+    return (*iter).second;
+}
+} // namespace dtnsim