diff --git a/utils/misc/src/main/java/org/onlab/packet/dhcp/CircuitId.java b/utils/misc/src/main/java/org/onlab/packet/dhcp/CircuitId.java
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+++ b/utils/misc/src/main/java/org/onlab/packet/dhcp/CircuitId.java
@@ -0,0 +1,111 @@
+/*
+ * 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.onlab.packet.dhcp;
+
+import com.google.common.collect.Lists;
+import org.onlab.packet.VlanId;
+
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+import java.util.Objects;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+/**
+ * Representation of DHCP option 82 Circuit id.
+ */
+public class CircuitId {
+    private static final String SEPARATOR = ":";
+    private static final String CIRCUIT_ID_FORMAT = "%s" + SEPARATOR + "%s";
+    private String connectPoint;
+    private VlanId vlanId;
+
+    /**
+     * Creates a circuit id by given information.
+     *
+     * @param connectPoint the connect point of circuit id
+     * @param vlanId the vlan id of circuit id
+     */
+    public CircuitId(String connectPoint, VlanId vlanId) {
+        this.connectPoint = connectPoint;
+        this.vlanId = vlanId;
+    }
+
+    /**
+     * Combines connect point with vlan id with separator ':' as circuit id.
+     * e.g. of:0000000000000204/1:100
+     *
+     * @return serialized circuit id for connect point and vlan ID
+     */
+    public byte[] serialize() {
+        return String
+                .format(CIRCUIT_ID_FORMAT, connectPoint, vlanId.toString())
+                .getBytes(StandardCharsets.US_ASCII);
+    }
+
+    /**
+     * Deserialize circuit id from byte string.
+     *
+     * @param circuitId the circuit id byte string
+     * @return a Circuit Id
+     */
+    public static CircuitId deserialize(byte[] circuitId) {
+        String cIdString = new String(circuitId, StandardCharsets.US_ASCII);
+        List<String> split = Lists.newArrayList(cIdString.split(SEPARATOR));
+        checkArgument(split.size() > 1, "Illegal circuit id.");
+        // remove last element (vlan id)
+        String vlanId = split.remove(split.size() - 1);
+        String connectPoint = String.join(SEPARATOR, split);
+        return new CircuitId(connectPoint, VlanId.vlanId(vlanId));
+    }
+
+    /**
+     * Gets the connect point of circuit id.
+     *
+     * @return the connect point
+     */
+    public String connectPoint() {
+        return connectPoint;
+    }
+
+    /**
+     * Gets the vlan id of circuit id.
+     *
+     * @return the vlan id
+     */
+    public VlanId vlanId() {
+        return vlanId;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == this) {
+            return true;
+        }
+        if (!(obj instanceof CircuitId)) {
+            return false;
+        }
+        CircuitId that = (CircuitId) obj;
+        return Objects.equals(this.connectPoint, that.connectPoint) &&
+                Objects.equals(this.vlanId, that.vlanId);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(connectPoint, vlanId);
+    }
+}