diff --git a/apps/openstacknode/src/main/java/org/onosproject/openstacknode/Constants.java b/apps/openstacknode/src/main/java/org/onosproject/openstacknode/Constants.java
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index 0000000..b4c3f04
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+++ b/apps/openstacknode/src/main/java/org/onosproject/openstacknode/Constants.java
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.openstacknode;
+
+/**
+ * Provides constants used in OpenStack node services.
+ */
+public final class Constants {
+
+    private Constants() {
+    }
+
+    public static final String INTEGRATION_BRIDGE = "br-int";
+    public static final String ROUTER_BRIDGE = "br-router";
+    public static final String DEFAULT_TUNNEL = "vxlan";
+    public static final String PATCH_INTG_BRIDGE = "patch-intg";
+    public static final String PATCH_ROUT_BRIDGE = "patch-rout";
+}
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