diff --git a/src/main/java/org/opencord/cordvtn/rest/NeutronMl2SubnetsWebResource.java b/src/main/java/org/opencord/cordvtn/rest/NeutronMl2SubnetsWebResource.java
index 71ebbb0..4a57d28 100644
--- a/src/main/java/org/opencord/cordvtn/rest/NeutronMl2SubnetsWebResource.java
+++ b/src/main/java/org/opencord/cordvtn/rest/NeutronMl2SubnetsWebResource.java
@@ -15,53 +15,184 @@
  */
 package org.opencord.cordvtn.rest;
 
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import org.onlab.osgi.DefaultServiceDirectory;
 import org.onosproject.rest.AbstractWebResource;
+import org.opencord.cordvtn.api.CordVtnAdminService;
+import org.opencord.cordvtn.api.SubnetId;
+import org.openstack4j.core.transport.ObjectMapperSingleton;
+import org.openstack4j.model.network.Subnet;
+import org.openstack4j.openstack.networking.domain.NeutronSubnet;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import javax.ws.rs.Consumes;
 import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
 import javax.ws.rs.POST;
 import javax.ws.rs.PUT;
 import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
+import javax.ws.rs.core.Context;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
+import javax.ws.rs.core.UriBuilder;
+import javax.ws.rs.core.UriInfo;
 import java.io.InputStream;
+import java.util.Set;
+
+import static com.fasterxml.jackson.databind.SerializationFeature.INDENT_OUTPUT;
+import static javax.ws.rs.core.Response.Status.NOT_FOUND;
+import static javax.ws.rs.core.Response.created;
+import static javax.ws.rs.core.Response.noContent;
+import static javax.ws.rs.core.Response.status;
 
 /**
- * Dummy Neutron ML2 mechanism driver.
- * It just returns OK for subnets resource requests.
+ * Neutron ML2 mechanism driver implementation for the subnet resource.
  */
 @Path("subnets")
 public class NeutronMl2SubnetsWebResource extends AbstractWebResource {
     protected final Logger log = LoggerFactory.getLogger(getClass());
-    private static final String SUBNETS_MESSAGE = "Received subnets %s";
 
+    private static final String MESSAGE = "Received subnets %s request";
+    private static final String SUBNET  = "subnet";
+    private static final String SUBNETS = "subnets";
+
+    private final CordVtnAdminService adminService =
+            DefaultServiceDirectory.getService(CordVtnAdminService.class);
+
+    @Context
+    private UriInfo uriInfo;
+
+    /**
+     * Creates a subnet from the JSON input stream.
+     *
+     * @param input subnet JSON input stream
+     * @return 201 CREATED if the JSON is correct, 400 BAD_REQUEST if the JSON
+     * is invalid or duplicated subnet already exists
+     */
     @POST
     @Consumes(MediaType.APPLICATION_JSON)
     @Produces(MediaType.APPLICATION_JSON)
     public Response createSubnet(InputStream input) {
-        log.trace(String.format(SUBNETS_MESSAGE, "create"));
-        return Response.status(Response.Status.OK).build();
+        log.trace(String.format(MESSAGE, "CREATE"));
+
+        final NeutronSubnet subnet = readSubnet(input);
+        adminService.createSubnet(subnet);
+        UriBuilder locationBuilder = uriInfo.getBaseUriBuilder()
+                .path(SUBNETS)
+                .path(subnet.getId());
+
+        // TODO fix networking-onos to send Network UPDATE when subnet created
+        return created(locationBuilder.build()).build();
     }
 
-
+    /**
+     * Updates the subnet with the specified identifier.
+     *
+     * @param id    subnet identifier
+     * @param input subnet JSON input stream
+     * @return 200 OK with the updated subnet, 400 BAD_REQUEST if the requested
+     * subnet does not exist
+     */
     @PUT
     @Path("{id}")
     @Produces(MediaType.APPLICATION_JSON)
     @Consumes(MediaType.APPLICATION_JSON)
     public Response updateSubnet(@PathParam("id") String id, InputStream input) {
-        log.trace(String.format(SUBNETS_MESSAGE, "update"));
-        return Response.status(Response.Status.OK).build();
+        log.trace(String.format(MESSAGE, "UPDATE " + id));
 
+        final NeutronSubnet subnet = readSubnet(input);
+        adminService.updateSubnet(subnet);
+
+        ObjectNode result = this.mapper().createObjectNode();
+        return ok(result.set(SUBNET, writeSubnet(subnet))).build();
     }
 
+    /**
+     * Returns all subnets.
+     *
+     * @return 200 OK with set of subnets
+     */
+    @GET
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response getSubnets() {
+        log.trace(String.format(MESSAGE, "GET"));
+
+        Set<Subnet> subnets = adminService.getSubnets();
+        ArrayNode arrayNodes = mapper().createArrayNode();
+        subnets.stream().forEach(subnet -> {
+            arrayNodes.add(writeSubnet(subnet));
+        });
+
+        ObjectNode result = this.mapper().createObjectNode();
+        return ok(result.set(SUBNETS, arrayNodes)).build();
+    }
+
+    /**
+     * Returns the subnet with the given subnet id.
+     *
+     * @param id subnet id
+     * @return 200 OK with the subnet, 404 NOT_FOUND if the subnet does not exist
+     */
+    @GET
+    @Path("{id}")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response getSubnet(@PathParam("id") String id) {
+        log.trace(String.format(MESSAGE, "GET " + id));
+
+        Subnet subnet = adminService.getSubnet(SubnetId.of(id));
+        if (subnet == null) {
+            return status(NOT_FOUND).build();
+        }
+
+        ObjectNode result = this.mapper().createObjectNode();
+        return ok(result.set(SUBNET, writeSubnet(subnet))).build();
+    }
+
+    /**
+     * Removes the subnet.
+     *
+     * @param id subnet identifier
+     * @return 204 NO_CONTENT, 400 BAD_REQUEST if the subnet does not exist
+     */
     @DELETE
     @Path("{id}")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
     public Response deleteSubnet(@PathParam("id") String id) {
-        log.trace(String.format(SUBNETS_MESSAGE, "delete"));
-        return Response.noContent().build();
+        log.trace(String.format(MESSAGE, "DELETE " + id));
+
+        adminService.removeSubnet(SubnetId.of(id));
+        return noContent().build();
+    }
+
+    private NeutronSubnet readSubnet(InputStream input) {
+        try {
+            JsonNode jsonTree = mapper().enable(INDENT_OUTPUT).readTree(input);
+            log.trace(mapper().writeValueAsString(jsonTree));
+            return ObjectMapperSingleton.getContext(NeutronSubnet.class)
+                    .readerFor(NeutronSubnet.class)
+                    .readValue(jsonTree);
+        } catch (Exception e) {
+            throw new IllegalArgumentException();
+        }
+    }
+
+    private ObjectNode writeSubnet(Subnet subnet) {
+        try {
+            String strSubnet = ObjectMapperSingleton.getContext(NeutronSubnet.class)
+                    .writerFor(NeutronSubnet.class)
+                    .writeValueAsString(subnet);
+            log.trace(strSubnet);
+            return (ObjectNode) mapper().readTree(strSubnet.getBytes());
+        } catch (Exception e) {
+            throw new IllegalStateException();
+        }
     }
 }