diff --git a/configs/nottingham/nottingham-mdf-4507.cfg b/configs/nottingham/nottingham-mdf-4507.cfg
index b76a7aa..03ee6de 100644
--- a/configs/nottingham/nottingham-mdf-4507.cfg
+++ b/configs/nottingham/nottingham-mdf-4507.cfg
@@ -1,9 +1,9 @@
 Building configuration...
 
-Current configuration : 37651 bytes
+Current configuration : 38333 bytes
 !
-! Last configuration change at 15:59:54 EDT Wed Jun 11 2025 by josoto73.admin
-! NVRAM config last updated at 15:59:55 EDT Wed Jun 11 2025 by josoto73.admin
+! Last configuration change at 19:43:29 EDT Thu Sep 18 2025 by jkafta72.admin
+! NVRAM config last updated at 19:43:29 EDT Thu Sep 18 2025 by jkafta72.admin
 !
 version 15.2
 no service pad
@@ -185,9 +185,18 @@ vlan 251
 vlan 506
  name CC-Ring
 !
+vlan 516
+ name ring6_ct-b
+!
 vlan 525
  name native_stub
 !
+vlan 526
+ name ring6_sh-a
+!
+vlan 536
+ name ring6_sh-b
+!
 vlan 1030
  name hvac_iot
 lldp run
@@ -770,7 +779,7 @@ interface TenGigabitEthernet3/7
 !
 interface TenGigabitEthernet3/8
  description to Ring#6 CCF Circuit ID 159971
- switchport trunk allowed vlan 506
+ switchport trunk allowed vlan 506,516,526,536
  switchport trunk native vlan 525
  switchport mode trunk
  ip flow monitor netflow-monitor input
@@ -1320,10 +1329,29 @@ interface Vlan506
  description to Ring #6 CCF Service #S200286
  ip address 10.250.206.4 255.255.255.0
  ip pim sparse-mode
+ ip ospf cost 3000
+!
+interface Vlan516
+ description ring6_ct-b
+ ip address 10.254.216.4 255.255.255.0
+ ip pim sparse-mode
+ ip ospf cost 4000
 !
 interface Vlan525
  no ip address
 !
+interface Vlan526
+ description ring6_sh-a
+ ip address 10.254.226.4 255.255.255.0
+ ip pim sparse-mode
+ ip ospf cost 1000
+!
+interface Vlan536
+ description ring6_sh-b
+ ip address 10.254.236.4 255.255.255.0
+ ip pim sparse-mode
+ ip ospf cost 2000
+!
 interface Vlan1030
  description HVAC IoT
  no ip address
@@ -1335,8 +1363,14 @@ router ospf 315
  area 206 range 10.4.0.0 255.255.0.0
  passive-interface default
  no passive-interface Vlan506
+ no passive-interface Vlan516
+ no passive-interface Vlan526
+ no passive-interface Vlan536
  network 10.4.0.0 0.0.255.255 area 206
  network 10.250.206.4 0.0.0.0 area 0
+ network 10.254.216.4 0.0.0.0 area 0
+ network 10.254.226.4 0.0.0.0 area 0
+ network 10.254.236.4 0.0.0.0 area 0
  network 192.168.4.0 0.0.0.255 area 206
 !
 ip local policy route-map blue