diff --git a/core/api/src/main/java/org/onosproject/net/device/DeviceAdminService.java b/core/api/src/main/java/org/onosproject/net/device/DeviceAdminService.java
index 500b635..a750e06 100644
--- a/core/api/src/main/java/org/onosproject/net/device/DeviceAdminService.java
+++ b/core/api/src/main/java/org/onosproject/net/device/DeviceAdminService.java
@@ -16,6 +16,7 @@
 package org.onosproject.net.device;
 
 import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
 
 /**
  * Service for administering the inventory of infrastructure devices.
@@ -31,4 +32,13 @@
 
     // TODO: add ability to administratively suspend/resume device
 
+
+  /**
+   * Administratively enables or disables a port on a device.
+   *
+   * @param deviceId  device identifier
+   * @param portNumber port identifier
+   * @param enable true if port is to be enabled, false to disable
+   */
+    void changePortState(DeviceId deviceId, PortNumber portNumber, boolean enable);
 }
diff --git a/core/api/src/main/java/org/onosproject/net/device/DeviceProvider.java b/core/api/src/main/java/org/onosproject/net/device/DeviceProvider.java
index d8adbb0..1727fc8 100644
--- a/core/api/src/main/java/org/onosproject/net/device/DeviceProvider.java
+++ b/core/api/src/main/java/org/onosproject/net/device/DeviceProvider.java
@@ -17,6 +17,7 @@
 
 import org.onosproject.net.DeviceId;
 import org.onosproject.net.MastershipRole;
+import org.onosproject.net.PortNumber;
 import org.onosproject.net.provider.Provider;
 
 /**
@@ -54,4 +55,14 @@
      * @return true if reachable, false otherwise
      */
     boolean isReachable(DeviceId deviceId);
+
+    /**
+     * Administratively enables or disables a port.
+     *
+     * @param deviceId device identifier
+     * @param portNumber device identifier
+     * @param enable true if port is to be enabled, false to disable
+     */
+    void changePortState(DeviceId deviceId, PortNumber portNumber,
+                         boolean enable);
 }