diff --git a/protos/voltha_protos/ext_config.proto b/protos/voltha_protos/ext_config.proto
new file mode 100644
index 0000000..47113e9
--- /dev/null
+++ b/protos/voltha_protos/ext_config.proto
@@ -0,0 +1,70 @@
+// Copyright (c) 2020 Open Networking Foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at:
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+syntax = "proto3";
+
+option go_package = "github.com/opencord/voltha-protos/v3/go/ext/config";
+
+package config;
+
+option java_package = "org.opencord.voltha";
+
+message AlarmConfig {
+    oneof config {
+       OnuItuPonAlarm onu_itu_pon_alarm_config = 1;
+    }
+}
+
+message OnuItuPonAlarm {
+   enum AlarmID {
+       RDI_ERRORS = 0; // RDI errors
+   }
+
+   enum AlarmReportingCondition {
+       RATE_THRESHOLD = 0; // The alarm is triggered if the stats delta value between samples crosses the configured threshold boundary
+       RATE_RANGE = 1; // The alarm is triggered if the stats delta value between samples deviates from the configured range
+       VALUE_THRESHOLD = 2; // The alarm is raised if the stats sample value becomes greater than this level.  The alarm is cleared when the host read the stats
+   }
+
+   message SoakTime {
+       fixed32 active_soak_time = 1;
+       fixed32 clear_soak_time = 2;
+   }
+
+   message RateThresholdConfig {
+       fixed64 rate_threshold_rising = 1;
+       fixed64 rate_threshold_falling = 2;
+       SoakTime soak_time = 3;
+   }
+
+   message RateRangeConfig {
+       fixed64 rate_range_lower = 1;
+       fixed64 rate_range_upper = 2;
+       SoakTime soak_time = 3;
+   }
+
+   message ValueThresholdConfig {
+       fixed64 threshold_limit = 1;
+       SoakTime soak_time = 2;
+   }
+
+   fixed32 pon_ni = 1;
+   fixed32 onu_id = 2;
+   AlarmID alarm_id = 3;
+   AlarmReportingCondition alarm_reporting_condition = 4;
+   oneof config {
+       RateThresholdConfig rate_threshold_config = 5;
+       RateRangeConfig rate_range_config = 6;
+       ValueThresholdConfig value_threshold_config = 7;
+   }
+}
diff --git a/protos/voltha_protos/openolt.proto b/protos/voltha_protos/openolt.proto
index 8c4c559..6a38963 100644
--- a/protos/voltha_protos/openolt.proto
+++ b/protos/voltha_protos/openolt.proto
@@ -22,6 +22,7 @@
 import "google/api/annotations.proto";
 import public "voltha_protos/tech_profile.proto";
 import public "voltha_protos/common.proto";
+import "voltha_protos/ext_config.proto";
 
 service Openolt {
 
@@ -188,7 +189,7 @@
         };
     }
 
-    rpc OnuItuPonAlarmSet(OnuItuPonAlarm) returns (Empty) {
+    rpc OnuItuPonAlarmSet(config.OnuItuPonAlarm) returns (Empty) {
         option (google.api.http) = {
           post: "/v1/OnuItuPonAlarmSet"
           body: "*"
@@ -447,50 +448,6 @@
     fixed32 tech_profile_id = 15;
 }
 
-message OnuItuPonAlarm {
-    enum AlarmID {
-        RDI_ERRORS = 0; // RDI errors
-    }
-
-    enum AlarmReportingCondition {
-        RATE_THRESHOLD = 0; // The alarm is triggered if the stats delta value between samples crosses the configured threshold boundary
-        RATE_RANGE = 1; // The alarm is triggered if the stats delta value between samples deviates from the configured range
-        VALUE_THRESHOLD = 2; // The alarm is raised if the stats sample value becomes greater than this level.  The alarm is cleared when the host read the stats
-    }
-
-    message SoakTime {
-        fixed32 active_soak_time = 1;
-        fixed32 clear_soak_time = 2;
-    }
-
-    message RateThresholdConfig {
-        fixed64 rate_threshold_rising = 1;
-        fixed64 rate_threshold_falling = 2;
-        SoakTime soak_time = 3;
-    }
-
-    message RateRangeConfig {
-        fixed64 rate_range_lower = 1;
-        fixed64 rate_range_upper = 2;
-        SoakTime soak_time = 3;
-    }
-
-    message ValueThresholdConfig {
-        fixed64 threshold_limit = 1;
-        SoakTime soak_time = 2;
-    }
-
-    fixed32 pon_ni = 1;
-    fixed32 onu_id = 2;
-    AlarmID alarm_id = 3;
-    AlarmReportingCondition alarm_reporting_condition = 4;
-    oneof config {
-        RateThresholdConfig rate_threshold_config = 5;
-        RateRangeConfig rate_range_config = 6;
-        ValueThresholdConfig value_threshold_config = 7;
-    }
-}
-
 message SerialNumber {
     bytes vendor_id = 1;
     bytes vendor_specific = 2;
diff --git a/protos/voltha_protos/voltha.proto b/protos/voltha_protos/voltha.proto
index e6d9fdd..53e97d1 100644
--- a/protos/voltha_protos/voltha.proto
+++ b/protos/voltha_protos/voltha.proto
@@ -23,6 +23,7 @@
 
 import "voltha_protos/omci_mib_db.proto";
 import "voltha_protos/omci_alarm_db.proto";
+import "voltha_protos/ext_config.proto";
 
 option java_package = "org.opencord.voltha";
 option java_outer_classname = "VolthaProtos";
@@ -97,6 +98,13 @@
     TestResponseResult result = 1;
 }
 
+message ValueSet {
+    string id = 1;
+    oneof value{
+        config.AlarmConfig alarm_config = 2;
+    }
+}
+
 // Voltha represents the Voltha cluster data.  Each Core instance will hold a subset of
 // the entire cluster. However, some items (e.g. adapters) will be held by all cores
 // for better performance
@@ -602,6 +610,11 @@
             get: "/api/v1/GetExtValue"
         };
     }
+    rpc SetExtValue(ValueSet) returns(google.protobuf.Empty) {
+        option (google.api.http) = {
+            get: "/api/v1/SetExtValue"
+        };
+    }
 
     // omci start and stop cli implementation
     rpc StartOmciTestAction(OmciTestRequest) returns(TestResponse) {