code: private void doDeployNetwork(final String name, final Message<JsonObject> message) {
      // When deploying a bare network, we first attempt to load any existing
      // configuration from the cluster. This ensures that we don't overwrite
      // a cluster configuration. In some cases, the manager can be redeployed
      // by deploying a network name.
      String scontext = data.<String, String>getMap(String.format("%s.%s", cluster, name)).get(String.format("%s.%s", cluster, name));
      final NetworkContext context = scontext != null ? Contexts.<NetworkContext>deserialize(new JsonObject(scontext)) : ContextBuilder.buildContext(new DefaultNetworkConfig(name), cluster);
  
      // Simply deploy an empty network.
      if (!managers.containsKey(context.address())) {
        // If the network manager hasn't yet been deployed then deploy the manager
        // and then update the network's configuration.
        platform.deployVerticle(NetworkManager.class.getName(), new JsonObject().putString("cluster", cluster).putString("address", context.address()), 1, new Handler<AsyncResult<String>>() {
          @Override
          public void handle(AsyncResult<String> result) {
            if (result.failed()) {
              message.reply(new JsonObject().putString("status", "error").putString("message", "Failed to deploy network manager."));
            } else {
              // Once the manager has been deployed we can add the network name to
              // the set of networks that are deployed in the cluster.
              final String deploymentID = result.result();
              DefaultNodeManager.this.context.execute(new Action<Void>() {
                @Override
                public Void perform() {
                  networks.add(context.name());
                  return null;
                }
              }, new Handler<AsyncResult<Void>>() {
                @Override
                public void handle(AsyncResult<Void> result) {
                  // And store the manager's deployment ID in the local managers map.
                  managers.put(context.address(), deploymentID);
                  doDeployNetwork(context, message);
                }
              });
            }
          }
        });
      } else {
        message.reply(new JsonObject().putString("status", "ok").putObject("context", Contexts.serialize(context)));
      }
    }
docs: Deploys a network from name.