diff --git a/apps/ofagent/src/main/java/org/onosproject/ofagent/cli/OFAgentAddControllerCommand.java b/apps/ofagent/src/main/java/org/onosproject/ofagent/cli/OFAgentAddControllerCommand.java
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index 0000000..354197b
--- /dev/null
+++ b/apps/ofagent/src/main/java/org/onosproject/ofagent/cli/OFAgentAddControllerCommand.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2017-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.ofagent.cli;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.TpPort;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.incubator.net.virtual.NetworkId;
+import org.onosproject.ofagent.api.OFAgent;
+import org.onosproject.ofagent.api.OFAgentAdminService;
+import org.onosproject.ofagent.api.OFAgentService;
+import org.onosproject.ofagent.impl.DefaultOFAgent;
+import org.onosproject.ofagent.impl.DefaultOFController;
+
+/**
+ * Adds a controller to the OFAgent.
+ */
+@Command(scope = "onos", name = "ofagent-controller-add",
+        description = "Add a controller to the ofagent")
+public class OFAgentAddControllerCommand extends AbstractShellCommand {
+
+    private static final String PATTERN_IP_PORT = "\\d{1,3}(?:\\.\\d{1,3}){3}(?::\\d{1,5})";
+
+    @Argument(index = 0, name = "network", description = "Virtual network ID",
+            required = true, multiValued = false)
+    private long networkId = NetworkId.NONE.id();
+
+    @Argument(index = 1, name = "controller",
+            description = "External controller with IP:PORT format",
+            required = true, multiValued = false)
+    private String strCtrl;
+
+    @Override
+    protected void execute() {
+        if (!isValidController(strCtrl)) {
+            error("Invalid controller string %s, must be IP:PORT", strCtrl);
+            return;
+        }
+
+        OFAgentService service = get(OFAgentService.class);
+        OFAgentAdminService adminService = get(OFAgentAdminService.class);
+
+        OFAgent existing = service.agent(NetworkId.networkId(networkId));
+        if (existing == null) {
+            error("OFAgent for network %s does not exist", networkId);
+            return;
+        }
+
+        String[] temp = strCtrl.split(":");
+        OFAgent updated = DefaultOFAgent.builder()
+                .from(existing)
+                .addController(DefaultOFController.of(
+                        IpAddress.valueOf(temp[0]),
+                        TpPort.tpPort(Integer.valueOf(temp[1]))))
+                .build();
+        adminService.updateAgent(updated);
+    }
+
+    private boolean isValidController(String ctrl) {
+        if (!ctrl.matches(PATTERN_IP_PORT)) {
+            return false;
+        }
+
+        String[] temp = ctrl.split(":");
+        try {
+            IpAddress.valueOf(temp[0]);
+            TpPort.tpPort(Integer.valueOf(temp[1]));
+            return true;
+        } catch (IllegalArgumentException e) {
+            return false;
+        }
+    }
+}