diff --git a/tosca-configs/att-workflow/bbwf-fabric.yaml b/tosca-configs/att-workflow/bbwf-fabric.yaml
index fa61437..f0285c9 100755
--- a/tosca-configs/att-workflow/bbwf-fabric.yaml
+++ b/tosca-configs/att-workflow/bbwf-fabric.yaml
@@ -22,6 +22,8 @@
   - custom_types/bngportmapping.yaml
   - custom_types/attworkflowdriverwhitelistentry.yaml
   - custom_types/attworkflowdriverservice.yaml
+  - custom_types/serviceinstanceattribute.yaml
+  - custom_types/onosapp.yaml
 
 description: Configures the fabric and the whitelist
 
@@ -98,7 +100,6 @@
       type: tosca.nodes.SwitchPort
       properties:
         portId: 48
-        host_learning: false
       requirements:
         - switch:
             node: switch#leaf_1
@@ -112,6 +113,29 @@
         s_tag: any
         switch_port: 48
 
+    # DHCP L2 Relay config
+    onos_app#dhcpl2relay:
+      type: tosca.nodes.ONOSApp
+      properties:
+        name: dhcpl2relay
+        must-exist: true
+
+    dhcpl2relay-config-attr:
+      type: tosca.nodes.ServiceInstanceAttribute
+      properties:
+        name: /onos/v1/network/configuration/apps/org.opencord.dhcpl2relay
+        value: >
+          {
+            "dhcpl2relay" : {
+              "useOltUplinkForServerPktInOut" : false,
+              "dhcpServerConnectPoints" : [ "of:0000000000000001/31" ]
+            }
+          }
+      requirements:
+        - service_instance:
+            node: onos_app#dhcpl2relay
+            relationship: tosca.relationships.BelongsToOne
+
     # ONU Whitelist
     service#att:
       type: tosca.nodes.AttWorkflowDriverService
diff --git a/tosca-configs/att-workflow/bbwf-olt.yaml b/tosca-configs/att-workflow/bbwf-olt.yaml
index 1fd6316..8a8f993 100755
--- a/tosca-configs/att-workflow/bbwf-olt.yaml
+++ b/tosca-configs/att-workflow/bbwf-olt.yaml
@@ -69,7 +69,7 @@
         name: CIG OLT
         device_type: openolt
         host: 192.168.100.113
-        port: 9191
+        port: 10400
         switch_datapath_id: of:0000000000000001
         switch_port: "51"
         outer_tpid: "0x8100"
diff --git a/tosca-configs/att-workflow/onlab-pod1-fabric.yaml b/tosca-configs/att-workflow/onlab-pod1-fabric.yaml
index 77cae6b..0f9ddb0 100755
--- a/tosca-configs/att-workflow/onlab-pod1-fabric.yaml
+++ b/tosca-configs/att-workflow/onlab-pod1-fabric.yaml
@@ -23,6 +23,7 @@
   - custom_types/attworkflowdriverwhitelistentry.yaml
   - custom_types/attworkflowdriverservice.yaml
   - custom_types/serviceinstanceattribute.yaml
+  - custom_types/onosapp.yaml
 
 description: Configures the ONF SEBA POD with AT&T workflow
 
@@ -70,6 +71,12 @@
         switch_port: 31
 
     # DHCP L2 Relay config
+    onos_app#dhcpl2relay:
+      type: tosca.nodes.ONOSApp
+      properties:
+        name: dhcpl2relay
+        must-exist: true
+
     dhcpl2relay-config-attr:
       type: tosca.nodes.ServiceInstanceAttribute
       properties:
diff --git a/tosca-configs/att-workflow/onlab-pod2-fabric.yaml b/tosca-configs/att-workflow/onlab-pod2-fabric.yaml
index 76f16a9..382d8b4 100755
--- a/tosca-configs/att-workflow/onlab-pod2-fabric.yaml
+++ b/tosca-configs/att-workflow/onlab-pod2-fabric.yaml
@@ -23,6 +23,7 @@
   - custom_types/attworkflowdriverwhitelistentry.yaml
   - custom_types/attworkflowdriverservice.yaml
   - custom_types/serviceinstanceattribute.yaml
+  - custom_types/onosapp.yaml
 
 description: Configures the ONF SEBA POD2 with AT&T workflow
 
@@ -70,6 +71,12 @@
         switch_port: 32
 
     # DHCP L2 Relay config
+    onos_app#dhcpl2relay:
+      type: tosca.nodes.ONOSApp
+      properties:
+        name: dhcpl2relay
+        must-exist: true
+
     dhcpl2relay-config-attr:
       type: tosca.nodes.ServiceInstanceAttribute
       properties: