diff --git a/api/src/main/java/org/opencord/bng/PppoeEventSubject.java b/api/src/main/java/org/opencord/bng/PppoeEventSubject.java
new file mode 100644
index 0000000..734ac37
--- /dev/null
+++ b/api/src/main/java/org/opencord/bng/PppoeEventSubject.java
@@ -0,0 +1,141 @@
+/*
+ * Copyright 2019-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.opencord.bng;
+
+import com.google.common.base.MoreObjects;
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.MacAddress;
+import org.onlab.packet.VlanId;
+import org.onosproject.net.ConnectPoint;
+
+/**
+ * Subject for a PPPoE attachment level events.
+ */
+public final class PppoeEventSubject {
+
+    private final ConnectPoint oltConnectPoint;
+    private final IpAddress ipAddress;
+    private final MacAddress macAddress;
+    private final String onuSerialNumber;
+    private final short sessionId;
+    private final VlanId sTag;
+    private final VlanId cTag;
+
+    /**
+     * Creates a PPPoE attachment event subject.
+     *
+     * @param oltConnectPoint The connect point of the OLT (UNI port)
+     * @param ipAddress       The IP Address that has been assigned
+     * @param macAddress      The MAC address of the attachment
+     * @param onuSerialNumber The serial number of the ONU
+     * @param sessionId       The PPPoE session ID
+     * @param sTag            The VLAN S-Tag
+     * @param cTag            The VLan C-Tag
+     */
+    public PppoeEventSubject(ConnectPoint oltConnectPoint,
+                             IpAddress ipAddress,
+                             MacAddress macAddress,
+                             String onuSerialNumber,
+                             short sessionId,
+                             VlanId sTag,
+                             VlanId cTag) {
+        this.oltConnectPoint = oltConnectPoint;
+        this.ipAddress = ipAddress;
+        this.macAddress = macAddress;
+        this.onuSerialNumber = onuSerialNumber;
+        this.sessionId = sessionId;
+        this.sTag = sTag;
+        this.cTag = cTag;
+    }
+
+    /**
+     * Returns the connect point of the OLT (UNI port).
+     *
+     * @return The connect point
+     */
+    public ConnectPoint getOltConnectPoint() {
+        return this.oltConnectPoint;
+    }
+
+
+    /**
+     * Returns the assigned IP address (if any).
+     *
+     * @return The IP address
+     */
+    public IpAddress getIpAddress() {
+        return this.ipAddress;
+    }
+
+    /**
+     * Returns the MAC address.
+     *
+     * @return The MAC address
+     */
+    public MacAddress getMacAddress() {
+        return this.macAddress;
+    }
+
+    /**
+     * Returns the ONU serial number.
+     *
+     * @return The ONU serial number
+     */
+    public String getOnuSerialNumber() {
+        return onuSerialNumber;
+    }
+
+    /**
+     * Returns the session ID.
+     *
+     * @return The session ID.
+     */
+    public short getSessionId() {
+        return this.sessionId;
+    }
+
+    /**
+     * Returns the VLAN S-Tag.
+     *
+     * @return The VLAN S-Tag.
+     */
+    public VlanId getsTag() {
+        return sTag;
+    }
+
+    /**
+     * Returns the VLAN C-Tag.
+     *
+     * @return The VLAN C-Tag.
+     */
+    public VlanId getcTag() {
+        return cTag;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("oltConnectPoint", oltConnectPoint)
+                .add("ipAddress", ipAddress)
+                .add("macAddress", macAddress)
+                .add("onuSerialNumber", onuSerialNumber)
+                .add("sessionId", sessionId)
+                .add("STag", sTag)
+                .add("CTag", cTag)
+                .toString();
+    }
+}