diff --git a/configs/corcoran/corcoran-mdf-4507.cfg b/configs/corcoran/corcoran-mdf-4507.cfg
index 1257abf..e27d03a 100644
--- a/configs/corcoran/corcoran-mdf-4507.cfg
+++ b/configs/corcoran/corcoran-mdf-4507.cfg
@@ -1,9 +1,9 @@
 Building configuration...
 
-Current configuration : 32033 bytes
+Current configuration : 32633 bytes
 !
-! Last configuration change at 10:37:12 EDT Tue Jul 8 2025 by swalts49.admin
-! NVRAM config last updated at 10:37:13 EDT Tue Jul 8 2025 by swalts49.admin
+! Last configuration change at 17:22:56 EDT Tue Aug 19 2025 by estein66.admin
+! NVRAM config last updated at 17:23:27 EDT Tue Aug 19 2025 by estein66.admin
 !
 version 15.2
 no service pad
@@ -484,7 +484,7 @@ interface TenGigabitEthernet3/6
 !
 interface TenGigabitEthernet3/7
  description to Ring#1 CCF Circuit ID 157699
- switchport trunk allowed vlan 501
+ switchport trunk allowed vlan 501,511,521,531
  switchport trunk native vlan 525
  switchport mode trunk
  ip flow monitor netflow-monitor input
@@ -982,6 +982,25 @@ interface Vlan501
  description to Ring #1 CCF Service #S200279
  ip address 10.250.201.7 255.255.255.0
  ip pim sparse-mode
+ ip ospf cost 3000
+!
+interface Vlan511
+ description ring1_ct-b
+ ip address 10.254.211.7 255.255.255.0
+ ip pim sparse-mode
+ ip ospf cost 4000
+!
+interface Vlan521
+ description ring1_sh-a
+ ip address 10.254.221.7 255.255.255.0
+ ip pim sparse-mode
+ ip ospf cost 1000
+!
+interface Vlan531
+ description ring1_sh-b
+ ip address 10.254.231.7 255.255.255.0
+ ip pim sparse-mode
+ ip ospf cost 2000
 !
 router ospf 315
  router-id 7.7.7.7
@@ -990,9 +1009,15 @@ router ospf 315
  area 201 range 192.168.0.0 255.255.252.0
  passive-interface default
  no passive-interface Vlan501
+ no passive-interface Vlan511
+ no passive-interface Vlan521
+ no passive-interface Vlan531
  network 10.7.230.0 0.0.0.31 area 201
  network 10.7.0.0 0.0.255.255 area 201
  network 10.250.201.7 0.0.0.0 area 0
+ network 10.254.211.7 0.0.0.0 area 0
+ network 10.254.221.7 0.0.0.0 area 0
+ network 10.254.231.7 0.0.0.0 area 0
  network 192.168.7.0 0.0.0.255 area 201
 !
 ip forward-protocol nd