diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/storekey/SubnetAssignedVidStoreKey.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/storekey/SubnetAssignedVidStoreKey.java
new file mode 100644
index 0000000..8c6dce2
--- /dev/null
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/storekey/SubnetAssignedVidStoreKey.java
@@ -0,0 +1,86 @@
+/*
+ * 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.segmentrouting.storekey;
+
+import java.util.Objects;
+
+import org.onlab.packet.Ip4Prefix;
+import org.onosproject.net.DeviceId;
+
+/**
+ * Key of assigned VLAN ID store.
+ */
+public class SubnetAssignedVidStoreKey {
+    private final DeviceId deviceId;
+    private final Ip4Prefix subnet;
+
+    /**
+     * Constructs the key of per subnet VLAN ID store.
+     *
+     * @param deviceId device ID of the VLAN cross-connection
+     * @param subnet subnet information
+     */
+    public SubnetAssignedVidStoreKey(DeviceId deviceId, Ip4Prefix subnet) {
+        this.deviceId = deviceId;
+        this.subnet = subnet;
+    }
+
+    /**
+     * Returns the device identification used to create this key.
+     *
+     * @return the device identifier
+     */
+    public DeviceId deviceId() {
+        return deviceId;
+    }
+
+    /**
+     * Returns the subnet information used to create this key.
+     *
+     * @return the subnet
+     */
+    public Ip4Prefix subnet() {
+        return subnet;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (!(o instanceof SubnetAssignedVidStoreKey)) {
+            return false;
+        }
+        SubnetAssignedVidStoreKey that =
+                (SubnetAssignedVidStoreKey) o;
+        return (Objects.equals(this.deviceId, that.deviceId) &&
+                Objects.equals(this.subnet, that.subnet));
+    }
+
+    @Override
+    public int hashCode() {
+        int result = 17;
+        result = 31 * result + Objects.hashCode(deviceId)
+                + Objects.hashCode(subnet);
+        return result;
+    }
+
+    @Override
+    public String toString() {
+        return "Device: " + deviceId + " Subnet: " + subnet;
+    }
+
+}