diff --git a/routers/router_topo.py b/routers/router_topo.py
index 69d3210..397e882 100755
--- a/routers/router_topo.py
+++ b/routers/router_topo.py
@@ -129,18 +129,27 @@ def run():
     info(net['r2'].cmd("ip route add 10.101.0.0/24 via 10.103.0.2 dev r2-eth3 metric 200"))
     
     info(net['r3'].cmd("ip route add 10.0.0.0/24 via 10.101.0.1 dev r3-eth2"))
-    info(net['r3'].cmd("ip route add 10.3.0.0/24 via 10.102.0.2 dev r3-eth3"))
+    info(net['r3'].cmd("ip route add 10.3.0.0/24 via 10.102.0.2 dev r3-eth3 metric 100"))
+    info(net['r3'].cmd("ip route add 10.3.0.0/24 via 10.101.0.1 dev r3-eth2 metric 200"))
     info(net['r3'].cmd("ip route add 10.1.0.0/24 via 10.102.0.2 dev r3-eth3 metric 100"))
     info(net['r3'].cmd("ip route add 10.1.0.0/24 via 10.101.0.1 dev r3-eth2 metric 200"))
-    info(net['r3'].cmd("ip route add 10.103.0.0/24 via 10.102.0.2 dev r3-eth3"))
-    info(net['r3'].cmd("ip route add 10.100.0.0/24 via 10.101.0.1 dev r3-eth2"))
+    info(net['r3'].cmd("ip route add 10.103.0.0/24 via 10.102.0.2 dev r3-eth3 metric 100"))
+    info(net['r3'].cmd("ip route add 10.103.0.0/24 via 10.101.0.1 dev r3-eth2 metric 200"))
+    info(net['r3'].cmd("ip route add 10.100.0.0/24 via 10.101.0.1 dev r3-eth2 metric 100"))
+    info(net['r3'].cmd("ip route add 10.100.0.0/24 via 10.102.0.2 dev r3-eth3 metric 200"))
+
     
-    info(net['r4'].cmd("ip route add 10.1.0.0/24 via 10.103.0.1 dev r4-eth3"))
-    info(net['r4'].cmd("ip route add 10.2.0.0/24 via 10.102.0.1 dev r4-eth2"))    
+    info(net['r4'].cmd("ip route add 10.1.0.0/24 via 10.103.0.1 dev r4-eth3 metric 100"))
+    info(net['r4'].cmd("ip route add 10.1.0.0/24 via 10.102.0.1 dev r4-eth2 metric 200"))
+    info(net['r4'].cmd("ip route add 10.2.0.0/24 via 10.102.0.1 dev r4-eth2 metric 100"))    
+    info(net['r4'].cmd("ip route add 10.2.0.0/24 via 10.103.0.1 dev r4-eth3 metric 200")) 
     info(net['r4'].cmd("ip route add 10.0.0.0/24 via 10.102.0.1 dev r4-eth2 metric 100"))
     info(net['r4'].cmd("ip route add 10.0.0.0/24 via 10.103.0.1 dev r4-eth3 metric 200"))
-    info(net['r4'].cmd("ip route add 10.101.0.0/24 via 10.102.0.1 dev r4-eth2"))
+    info(net['r4'].cmd("ip route add 10.101.0.0/24 via 10.102.0.1 dev r4-eth2 metric 100"))
+    info(net['r4'].cmd("ip route add 10.101.0.0/24 via 10.103.0.1 dev r4-eth3 metric 200"))
     info(net['r4'].cmd("ip route add 10.103.0.0/24 via 10.103.0.1 dev r4-eth3"))
+    info(net['r3'].cmd("ip route add 10.100.0.0/24 via 10.102.0.1 dev r4-eth2 metric 100"))
+    info(net['r3'].cmd("ip route add 10.100.0.0/24 via 10.103.0.1 dev r4-eth3 metric 200"))
 
     net.start()
     CLI(net)