diff --git a/apps/segmentrouting/app/src/main/java/org/onosproject/segmentrouting/OsgiPropertyConstants.java b/apps/segmentrouting/app/src/main/java/org/onosproject/segmentrouting/OsgiPropertyConstants.java
new file mode 100644
index 0000000..399e95b
--- /dev/null
+++ b/apps/segmentrouting/app/src/main/java/org/onosproject/segmentrouting/OsgiPropertyConstants.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018-present 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.
+ */
+
+package org.onosproject.segmentrouting;
+
+/**
+ * Constants for default values of configurable properties.
+ */
+public final class OsgiPropertyConstants {
+
+    private OsgiPropertyConstants() {}
+
+    public static final String PROP_ACTIVE_PROBING = "activeProbing";
+    public static final boolean ACTIVE_PROBING_DEFAULT = true;
+
+    public static final String PROP_SINGLE_HOMED_DOWN = "singleHomedDown";
+    public static final boolean SINGLE_HOMED_DOWN_DEFAULT = false;
+
+    public static final String PROP_RESPOND_TO_UNKNOWN_HOSTS = "respondToUnknownHosts";
+    public static final boolean RESPOND_TO_UNKNOWN_HOSTS_DEFAULT = true;
+
+    public static final String PROP_ROUTE_DOUBLE_TAGGED_HOSTS = "routeDoubleTaggedHosts";
+    public static final boolean ROUTE_DOUBLE_TAGGED_HOSTS_DEFAULT = false;
+
+    public static final String PROP_DEFAULT_INTERNAL_VLAN = "defaultInternalVlan";
+    public static final int DEFAULT_INTERNAL_VLAN_DEFAULT = 4094;
+
+    public static final String PROP_PW_TRANSPORT_VLAN = "pwTransportVlan";
+    public static final int PW_TRANSPORT_VLAN_DEFAULT = 4090;
+
+}