diff --git a/configs/mckin/mckin-mdf-a8360-sw1.cfg b/configs/mckin/mckin-mdf-a8360-sw1.cfg
index f35298b..55be642 100644
--- a/configs/mckin/mckin-mdf-a8360-sw1.cfg
+++ b/configs/mckin/mckin-mdf-a8360-sw1.cfg
@@ -206,13 +206,13 @@ vlan 254
     description Transit VLAN
     dhcpv4-snooping
 vlan 502
-    name CT-A
+    name ring2_ct-a
     dhcpv4-snooping
 vlan 512
     name CT-B
     dhcpv4-snooping
 vlan 522
-    name SH-A
+    name ring2_sh-a
     dhcpv4-snooping
 vlan 532
     name SH-B
@@ -225,6 +225,10 @@ spanning-tree priority 2
 spanning-tree trap topology-change instance 0
 spanning-tree ignore-pvid-inconsistency
 spanning-tree vlan 10,20,30,35,50,70,72,168,230,233,254,502,512,522,532,699
+spanning-tree vlan 502 priority 15
+spanning-tree vlan 512 priority 15
+spanning-tree vlan 522 priority 15
+spanning-tree vlan 532 priority 15
 interface mgmt
     no shutdown
     ip static 192.168.36.1/24
@@ -452,16 +456,18 @@ interface vlan 254
     ip ospf network point-to-point
     ip pim-sparse enable
 interface vlan 502
-    description to ring 2
+    description ring2_ct-a
     ip address 10.250.202.36/24
     ip ospf 1 area 0.0.0.0
     no ip ospf passive
+    ip ospf cost 3000
     ip pim-sparse enable
 interface vlan 522
-    description to ring 2
+    description ring2_sh-a
     ip address 10.254.222.36/24
     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 mckin-mdf-a8360-sw1