--- /dev/null
+/*
+ * Copyright (c) 2003-2005 The BISON Project
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+package peersim.transport;
+
+/**
+ * Generic interface to be implemented by protocols that need to be assigned to
+ * routers. The idea is that each node is assigned to a router, by
+ * invoking {@link #setRouter(int)} method. Routers are identified by
+ * integer indexes (starting from 0), based on the assumption that the
+ * router network
+ * is static. The router information is then used by different
+ * implementations to compute latency, congestion, etc.
+ *
+ * @author Alberto Montresor
+ * @version $Revision: 1.4 $
+ */
+public interface RouterInfo
+{
+
+/**
+ * Associates the node hosting this transport protocol instance with
+ * a router in the router network.
+ *
+ * @param router the numeric index of the router
+ */
+public void setRouter(int router);
+
+/**
+ * @return the router associated to this transport protocol.
+ */
+public int getRouter();
+
+}
