diff --git a/src/main/java/net/floodlightcontroller/topology/TopologyInstance.java b/src/main/java/net/floodlightcontroller/topology/TopologyInstance.java
index d0e59b33f2c72bcb95cae31a49d1ae4198811f79..51398fd5c386a556af785687f27694ae3560b274 100644
--- a/src/main/java/net/floodlightcontroller/topology/TopologyInstance.java
+++ b/src/main/java/net/floodlightcontroller/topology/TopologyInstance.java
@@ -110,7 +110,7 @@ public class TopologyInstance {
     // routecache contains n (specified in floodlightdefault.properties) routes
     // in order between every switch. Calculated using Yen's algorithm.
     protected Map<RouteId, ArrayList<Route>> routecache;
-    protected static volatile int maximumRouteEntriesStored = 10;
+    protected int maximumRouteEntriesStored = 10;
 
     public TopologyInstance(Map<DatapathId, Set<OFPort>> switchPorts,
                             Set<NodePortTuple> blockedPorts,
@@ -174,6 +174,7 @@ public class TopologyInstance {
                             });
 
         this.routecache = new HashMap<RouteId, ArrayList<Route>>();
+        this.maximumRouteEntriesStored = TopologyManager.maximumRouteEntriesStored;
 
     }
 	
diff --git a/src/main/java/net/floodlightcontroller/topology/TopologyManager.java b/src/main/java/net/floodlightcontroller/topology/TopologyManager.java
index 95868eafd26a8b20a66b991e1702b41f1d40e9a2..a3e392f8dd8a1554afd7fb9ba3ef8b04d67aa65f 100644
--- a/src/main/java/net/floodlightcontroller/topology/TopologyManager.java
+++ b/src/main/java/net/floodlightcontroller/topology/TopologyManager.java
@@ -68,6 +68,11 @@ public class TopologyManager implements IFloodlightModule, ITopologyService, IRo
 	protected static volatile ROUTE_METRIC routeMetric = ROUTE_METRIC.HOPCOUNT_AVOID_TUNNELS; //default: route on hop count
 	protected static boolean collectStatistics = false;
 
+	/**
+	 * Maximum number of route entries stored in memory.
+	 */
+	protected static volatile int maximumRouteEntriesStored = 10;
+
 	/**
 	 * Role of the controller.
 	 */
@@ -809,8 +814,13 @@ public class TopologyManager implements IFloodlightModule, ITopologyService, IRo
 					break;
 			}
 		}
-
 		log.info("Route Metrics set to {}", routeMetric);
+
+		String maxroutes = configOptions.get("maximumRouteEntriesStored") != null
+				? configOptions.get("maximumRouteEntriesStored").trim() : null;
+		if (maxroutes != null) {
+			maximumRouteEntriesStored = Integer.parseInt(maxroutes);
+		}
 	}
 
 	@Override
diff --git a/src/main/resources/floodlightdefault.properties b/src/main/resources/floodlightdefault.properties
index 5b63cb1d74c86632bc2f40dbb182c5cfd7db43ac..971e9a0d12d46acbeacec4d89a68a993b48ab438 100644
--- a/src/main/resources/floodlightdefault.properties
+++ b/src/main/resources/floodlightdefault.properties
@@ -63,4 +63,5 @@ net.floodlightcontroller.restserver.RestApiServer.httpPort=11080
 net.floodlightcontroller.restserver.RestApiServer.accessControlAllowAllOrigins=TRUE
 net.floodlightcontroller.statistics.StatisticsCollector.enable=FALSE
 net.floodlightcontroller.statistics.StatisticsCollector.collectionIntervalPortStatsSeconds=10
-net.floodlightcontroller.topology.TopologyManager.routeMetric=latency
\ No newline at end of file
+net.floodlightcontroller.topology.TopologyManager.routeMetric=latency
+net.floodlightcontroller.topology.TopologyManager.maximumRouteEntriesStored=10
\ No newline at end of file