diff --git a/configs/psla/psla-mdf-a8360-sw1.cfg b/configs/psla/psla-mdf-a8360-sw1.cfg
index 8d6c0c8..7b402a6 100644
--- a/configs/psla/psla-mdf-a8360-sw1.cfg
+++ b/configs/psla/psla-mdf-a8360-sw1.cfg
@@ -240,13 +240,13 @@ vlan 254
     description Transit VLAN
     dhcpv4-snooping
 vlan 503
-    name CT-A
+    name ring3_ct-a
     dhcpv4-snooping
 vlan 513
     name CT-B
     dhcpv4-snooping
 vlan 523
-    name SH-A
+    name ring3_sh-a
     dhcpv4-snooping
 vlan 533
     name SH-B
@@ -259,6 +259,10 @@ spanning-tree priority 2
 spanning-tree trap topology-change instance 0
 spanning-tree ignore-pvid-inconsistency
 spanning-tree vlan 10,20,30,35,40,50,70,72,107,168,203,230,254,503,513,523,533,699
+spanning-tree vlan 503 priority 15
+spanning-tree vlan 513 priority 15
+spanning-tree vlan 523 priority 15
+spanning-tree vlan 533 priority 15
 interface mgmt
     no shutdown
     ip static 192.168.3.2/24
@@ -546,16 +550,18 @@ interface vlan 254
     ip ospf network point-to-point
     ip pim-sparse enable
 interface vlan 503
-    description to ring 3
+    description ring3_ct-a
     ip address 10.250.203.3/24
     ip ospf 1 area 0.0.0.0
     no ip ospf passive
+    ip ospf cost 3000
     ip pim-sparse enable
 interface vlan 523
-    description to ring 3
+    description ring3_sh-a
     ip address 10.254.223.3/24
     ip ospf 1 area 0.0.0.0
     no ip ospf passive
+    ip ospf cost 1000
     ip pim-sparse enable
 snmp-server vrf default
 snmp-server system-description psla-mdf-a8360-sw1