diff --git a/configs/lemoy/lemoy-mdf-a8360-sw2.cfg b/configs/lemoy/lemoy-mdf-a8360-sw2.cfg
index 370049b..71115c5 100755
--- a/configs/lemoy/lemoy-mdf-a8360-sw2.cfg
+++ b/configs/lemoy/lemoy-mdf-a8360-sw2.cfg
@@ -206,13 +206,13 @@ vlan 507
     name CT-A
     dhcpv4-snooping
 vlan 517
-    name CT-B
+    name ring7_ct-b
     dhcpv4-snooping
 vlan 527
     name SH-A
     dhcpv4-snooping
 vlan 537
-    name SH-B
+    name ring7_sh-b
     dhcpv4-snooping
 vlan 699
     name NativeVLAN
@@ -222,6 +222,10 @@ spanning-tree priority 2
 spanning-tree trap topology-change instance 0
 spanning-tree ignore-pvid-inconsistency
 spanning-tree vlan 10,20,30,35,50,70,72,168,230,254,507,517,527,537,699
+spanning-tree vlan 507 priority 15
+spanning-tree vlan 517 priority 15
+spanning-tree vlan 527 priority 15
+spanning-tree vlan 537 priority 15
 interface mgmt
     no shutdown
     ip static 192.168.33.3/24
@@ -427,16 +431,18 @@ interface vlan 254
     ip ospf network point-to-point
     ip pim-sparse enable
 interface vlan 517
-    description to ring 7
+    description ring7_ct-b
     ip address 10.254.217.33/24
     ip ospf 1 area 0.0.0.0
     no ip ospf passive
+    ip ospf cost 4000
     ip pim-sparse enable
 interface vlan 537
-    description to ring 7
+    description ring7_sh-b
     ip address 10.254.237.33/24
     ip ospf 1 area 0.0.0.0
     no ip ospf passive
+    ip ospf cost 2000
     ip pim-sparse enable
 snmp-server vrf default
 snmp-server system-description lemoy-mdf-a8360-sw2