diff --git a/rhel/ovn-fedora.spec.in b/rhel/ovn-fedora.spec.in
index 14035de9a..9ee807fab 100644
--- a/rhel/ovn-fedora.spec.in
+++ b/rhel/ovn-fedora.spec.in
@@ -430,6 +430,7 @@ fi
 %{_bindir}/ovn-sbctl
 %{_bindir}/ovn-trace
 %{_bindir}/ovn-detrace
+%{_bindir}/ovn-appctl
 %{_datadir}/ovn/scripts/ovn-ctl
 %{_datadir}/ovn/scripts/ovn-lib
 %{_datadir}/ovn/scripts/ovndb-servers.ocf
@@ -440,6 +441,7 @@ fi
 %{_mandir}/man8/ovn-nbctl.8*
 %{_mandir}/man8/ovn-trace.8*
 %{_mandir}/man1/ovn-detrace.1*
+%{_mandir}/man8/ovn-appctl.8*
 #%{_mandir}/man7/ovn-architecture.7* - Uncomment this once the manpage is fixed
 %{_mandir}/man8/ovn-sbctl.8*
 #%{_mandir}/man5/ovn-nb.5* - Uncomment this once the manpage is fixed
diff --git a/utilities/.gitignore b/utilities/.gitignore
index 1d01e0b28..b319e8366 100644
--- a/utilities/.gitignore
+++ b/utilities/.gitignore
@@ -3,6 +3,8 @@
 /ovn-nbctl.8
 /ovn-sbctl
 /ovn-sbctl.8
+/ovn-appctl
+/ovn-appctl.8
 /ovn-trace
 /ovn-trace.8
 /ovn-detrace
diff --git a/utilities/automake.mk b/utilities/automake.mk
index 21dd8ccdf..ab0f6003a 100644
--- a/utilities/automake.mk
+++ b/utilities/automake.mk
@@ -8,7 +8,8 @@ man_MANS += \
     utilities/ovn-nbctl.8 \
     utilities/ovn-sbctl.8 \
     utilities/ovn-trace.8 \
-    utilities/ovn-detrace.1
+    utilities/ovn-detrace.1 \
+    utilities/ovn-appctl.8
 
 MAN_ROOTS += \
     utilities/ovn-sbctl.8.in \
@@ -27,6 +28,7 @@ EXTRA_DIST += \
     utilities/ovn-docker-overlay-driver.in \
     utilities/ovn-docker-underlay-driver.in \
     utilities/ovn-nbctl.8.xml \
+    utilities/ovn-appctl.8.xml \
     utilities/ovn-trace.8.xml \
     utilities/ovn-detrace.in \
     utilities/ovndb-servers.ocf \
@@ -49,7 +51,9 @@ CLEANFILES += \
     utilities/ovn-sbctl.8 \
     utilities/ovn-trace.8 \
     utilities/ovn-detrace.1 \
-    utilities/ovn-detrace
+    utilities/ovn-detrace \
+    utilities/ovn-appctl.8 \
+    utilities/ovn-appctl
 
 utilities/ovn-lib: $(top_builddir)/config.status
 
@@ -68,4 +72,9 @@ bin_PROGRAMS += utilities/ovn-trace
 utilities_ovn_trace_SOURCES = utilities/ovn-trace.c
 utilities_ovn_trace_LDADD = lib/libovn.la $(OVSDB_LIBDIR)/libovsdb.la $(OVS_LIBDIR)/libopenvswitch.la
 
+# ovn-nbctl
+bin_PROGRAMS += utilities/ovn-appctl
+utilities_ovn_appctl_SOURCES = utilities/ovn-appctl.c
+utilities_ovn_appctl_LDADD = lib/libovn.la $(OVSDB_LIBDIR)/libovsdb.la $(OVS_LIBDIR)/libopenvswitch.la
+
 include utilities/bugtool/automake.mk
diff --git a/utilities/ovn-appctl.8.xml b/utilities/ovn-appctl.8.xml
new file mode 100644
index 000000000..32a42a766
--- /dev/null
+++ b/utilities/ovn-appctl.8.xml
@@ -0,0 +1,352 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manpage program="ovn-appctl" section="8" title="ovn-appctl">
+    <h1>Name</h1>
+    <p>ovn-appctl -- utility for configuring running OVN daemons</p>
+
+    <h1>Synopsis</h1>
+    <p>
+      <code> ovn-appctl</code> [--target=target | -t target]
+      [-T secs | --timeout=secs] <var>command</var> [<var>arg</var>...]
+    </p>
+    <p><code>ovn-appctl</code> --help </p>
+    <p><code>ovn-appctl</code> --version </p>
+
+    <h1>Description</h1>
+    <p>
+      OVN daemons accept certain commands at runtime to control their behavior
+      and query their settings. Every daemon accepts a common set of commands
+      documented under COMMON COMMANDS below. Some daemons support additional
+      commands documented in their own manpages.
+    </p>
+
+    <p>
+       The <code>ovn-appctl</code> program provides a simple way to invoke
+       these commands. The command to be sent is specified on
+       <code>ovn-appctl's</code> command line as non-option arguments.
+       <code>ovn-appctl</code> sends the command and prints the daemon's
+       response on standard output.
+    </p>
+
+    <p>
+      <code>ovn-ctl</code> is exactly similar to Open vSwitch
+      <code>ovs-appctl</code> utility.
+    </p>
+
+    <h1>Command Commands</h1>
+    <p>
+      Every OVN daemon supports a common set of commands, which are documented
+      in this section.
+    </p>
+
+    <h2>General Commands</h2>
+    <p>
+      These commands display daemon-specific commands and the running version.
+      Note that these commands are different from the --help and --version
+      options that return information about the <code>ovn-appctl</code>
+      utility itself.
+    </p>
+
+    <dl>
+      <dt><code>list-commands</code></dt>
+      <dd>
+        Lists the commands supported by the target.
+      </dd>
+
+      <dt><code>version</code></dt>
+      <dd>
+        Displays the version and compilation date of the target.
+      </dd>
+    </dl>
+
+    <h2>Logging Commands</h2>
+    <p>
+      OVN has several log levels.  The highest-severity log level is:
+    </p>
+
+    <dl>
+      <dt><code>off</code></dt>
+      <dd>
+        No message is ever logged at this level, so setting a logging
+        destination's log level to off disables logging to that
+        destination.
+      </dd>
+    </dl>
+
+    <p>
+      The following log levels, in order of descending severity, are
+      available:
+    </p>
+
+    <dl>
+      <dt><code>emer</code></dt>
+      <dd>
+        A major failure forced a process to abort.
+      </dd>
+
+      <dt><code>err</code></dt>
+      <dd>
+        A high-level operation or a subsystem failed.  Attention is warranted.
+      </dd>
+
+      <dt><code>warn</code></dt>
+      <dd>
+        A low-level operation failed, but higher-level subsystems may be able
+        to recover.
+      </dd>
+
+      <dt><code>info</code></dt>
+      <dd>
+        Information that may be useful in retrospect when investigating a
+        problem.
+      </dd>
+
+      <dt><code>dbg</code></dt>
+      <dd>
+        Information useful only to someone with intricate knowledge of the
+        system, or that would commonly cause too-voluminous log output.
+        Log messages at this level are not logged by default.
+      </dd>
+    </dl>
+
+    <p>
+      Every OVN daemon supports the following commands for examining and
+      adjusting log levels.
+    </p>
+
+    <dl>
+      <dt><code>vlog/list</code></dt>
+      <dd>
+        Lists the known logging modules and their current levels.
+      </dd>
+
+      <dt><code>vlog/list-pattern</code></dt>
+      <dd>
+        Lists logging pattern used for each destination.
+      </dd>
+
+      <dt><code>vlog/set <var>[spec]</var></code></dt>
+      <dd>
+        Sets logging levels. Without any spec, sets the log level for every
+        module and destination to dbg. Otherwise, spec is a list of words
+        separated by spaces or commas or colons, up to one from each
+        category below:
+        <ul>
+          <li>
+            A valid module name, as displayed by the vlog/list command on
+            ovn-appctl(8), limits the log level change to the specified module.
+          </li>
+
+          <li>
+            <p>
+              <code>syslog</code>, <code>console</code>, or <code>file</code>,
+              to limit the log level change to only to the system log, to the
+              console, or to a file, respectively.
+            </p>
+
+            <p>
+              On Windows platform, <code>syslog</code> is accepted as a word
+              and is only useful if the target was started with the
+              <code>--syslog-target</code> option (the word has no effect
+              otherwise).
+            </p>
+          </li>
+
+          <li>
+            <code>off</code>, <code>emer</code>, <code>err</code>,
+            <code>warn</code>, <code>info</code>, or <code>dbg</code>, to
+            control the log level.  Messages of the given severity or higher
+            will be logged, and messages of lower severity will be filtered
+            out. <code>off</code> filters out all messages.
+          </li>
+        </ul>
+
+        <p>
+          Case is not significant within <var>spec</var>.
+        </p>
+      </dd>
+
+      <dt>
+        <code>vlog/set PATTERN</code>:<var>destination</var>:
+        <var>pattern</var>
+      </dt>
+      <dd>
+        Sets the log pattern for <var>destination</var> to <var>pattern</var>.
+        Each time a message is logged to destination, pattern determines the
+        message's formatting. Most characters in pattern are copied literally
+        to the log, but special escapes beginning with <code>%</code> are
+        expanded as follows:
+
+        <ul>
+          <li>
+            <code>%A</code> : The name of the application logging the
+            message, e.g. ovn-controller.
+          </li>
+
+          <li>
+            <code>%B</code> : The RFC5424 syslog PRI of the message.
+          </li>
+
+          <li>
+            <code>%c</code> : The name of the module
+            (as shown by ovn-appctl --list) logging the message.
+          </li>
+
+          <li>
+            <code>%d</code> : The current date and time in ISO 8601 format
+            (YYYY-MM-DD HH:MM:SS).
+          </li>
+
+          <li>
+            <code>%d<var>{format}</var></code> : The  current  date and time in
+            the specified format, which takes the same format as the template
+            argument to strftime(3). As an extension, any # characters in
+            format will be replaced by fractional seconds, e.g. use
+            <code>%H:%M:%S.###</code> for the time to the nearest millisecond.
+            Sub-second times are only approximate and currently decimal places
+            after the third will always be reported as zero.
+          </li>
+
+          <li>
+            <code>%D</code> : The current UTC date and time in ISO 8601 format
+            <code>(YYYY-MM-DD HH:MM:SS)</code>.
+          </li>
+
+          <li>
+            <code>%D<var>{format}</var></code> : The current UTC date and time
+            in the specified format, which takes the same format as the
+            template argument to strftime(3). Supports the same extension for
+            sub-second resolution as <code>%d{...}</code>.
+          </li>
+
+          <li>
+            <code>%E</code> : The hostname of the node running the application.
+          </li>
+
+          <li>
+            <code>%m</code> : The message being logged.
+          </li>
+
+          <li>
+            <code>%N</code> : A serial number for this message within this run
+            of the program, as a decimal number. The first message a program
+            logs has serial number 1, the second one has serial number 2,
+            and so on.
+          </li>
+
+          <li>
+            <code>%n</code> : A new-line.
+          </li>
+
+          <li>
+            <code>%p</code> : The level at which the message is logged, e.g.
+            <code>DBG</code>.
+          </li>
+
+          <li>
+            <code>%P</code> : The program's process ID (pid), as a decimal
+            number.
+          </li>
+
+          <li>
+            <code>%r</code> : The number of milliseconds elapsed from the start
+            of the application to the time the message was logged.
+          </li>
+
+          <li>
+            <code>%t</code> : The subprogram name, that is, an identifying name
+            for the process or thread that emitted the log message, such as
+            monitor for the process used for --monitor or main for the primary
+            process or thread in a program.
+          </li>
+
+          <li>
+            <code>%T</code> : The subprogram name enclosed in parentheses, e.g.
+            (monitor), or the empty string for the primary process or thread in
+            a program.
+          </li>
+
+          <li>
+            <code>%%</code> : A literal %.
+          </li>
+        </ul>
+
+        <p>
+          A few options may appear between the % and the format specifier
+          character, in this order:
+        </p>
+
+        <ul>
+        <li>
+          <code>-</code> : Left justify the escape's expansion within its field
+          width. Right justification is the default.
+        </li>
+
+        <li>
+          <code>-</code> : Pad the field to the field width with 0s.  Padding
+          with spaces is the default.
+        </li>
+        </ul>
+
+        <p>
+          <var>width</var>  A number specifies the minimum field width. If the
+          escape expands to fewer characters than width then it is padded to
+          fill the field width. (A field wider than width is not truncated to
+          fit.)
+        </p>
+
+        <p>
+          The default pattern for console and file output is
+          <code>%D{%Y-%m-%dT %H:%M:%SZ}|%05N|%c|%p|%m;</code> for syslog
+          output, <code>%05N|%c|%p|%m</code>.
+        </p>
+      </dd>
+
+      <dt><code>vlog/set FACILITY:<var>facility</var></code></dt>
+      <dd>
+        Sets the RFC5424 facility of the log message. facility can be one of
+        <code>kern</code>, <code>user</code>, <code>mail</code>,
+        <code>daemon</code>, <code>auth</code>, <code>syslog</code>,
+        <code>lpr</code>, <code>news</code>, <code>uucp</code>,
+        <code>clock</code>, <code>ftp</code>, <code>ntp</code>,
+        <code>audit</code>, <code>alert</code>, <code>clock2</code>,
+        <code>local0</code>, <code>local1</code>, <code>local2</code>,
+        <code>local3</code>, <code>local4</code>, <code>local5</code>,
+        <code>local6</code> or <code>local7</code>.
+      </dd>
+
+      <dt><code>vlog/close</code></dt>
+      <dd>
+        Causes the daemon to close its log file, if it is open.
+        (Use <code>vlog/reopen</code> to reopen it later.)
+      </dd>
+
+      <dt><code>vlog/reopen</code></dt>
+      <dd>
+        <p>
+          Causes the daemon to close its log file, if it is open, and then
+          reopen it. (This is useful after rotating log files, to cause a
+          new log file to be used.)
+        </p>
+
+        <p>
+          This has no effect if the target application was not invoked
+          with the <code>--log-file</code> option.
+        </p>
+      </dd>
+    </dl>
+
+    <h1>Options</h1>
+    <dl>
+      <dt><code>-h</code></dt>
+      <dt><code>--help</code></dt>
+      <dd>
+        Prints a brief help message to the console.
+      </dd>
+
+      <dt><code>-V</code></dt>
+      <dt><code>--version</code></dt>
+      <dd>
+        Prints version information to the console.
+      </dd>
+    </dl>
+</manpage>
\ No newline at end of file
diff --git a/utilities/ovn-appctl.c b/utilities/ovn-appctl.c
new file mode 100644
index 000000000..ffd30b452
--- /dev/null
+++ b/utilities/ovn-appctl.c
@@ -0,0 +1,239 @@
+/*
+ * Copyright (c) 2019 Nicira, Inc.
+ *
+ * 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.
+ */
+
+#include <config.h>
+
+#include <errno.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "command-line.h"
+#include "daemon.h"
+#include "lib/ovn-dirs.h"
+#include "openvswitch/dynamic-string.h"
+#include "jsonrpc.h"
+#include "process.h"
+#include "timeval.h"
+#include "unixctl.h"
+#include "util.h"
+#include "openvswitch/vlog.h"
+
+static void usage(void);
+static const char *parse_command_line(int argc, char *argv[]);
+static struct jsonrpc *connect_to_target(const char *target);
+
+int
+main(int argc, char *argv[])
+{
+    char *cmd_result, *cmd_error;
+    struct jsonrpc *client;
+    char *cmd, **cmd_argv;
+    const char *target;
+    int cmd_argc;
+    int error;
+
+    set_program_name(argv[0]);
+
+    /* Parse command line and connect to target. */
+    target = parse_command_line(argc, argv);
+    client = connect_to_target(target);
+
+    /* Transact request and process reply. */
+    cmd = argv[optind++];
+    cmd_argc = argc - optind;
+    cmd_argv = cmd_argc ? argv + optind : NULL;
+    error = unixctl_client_transact(client, cmd, cmd_argc, cmd_argv,
+                                    &cmd_result, &cmd_error);
+    if (error) {
+        ovs_fatal(error, "%s: transaction error", target);
+    }
+
+    if (cmd_error) {
+        jsonrpc_close(client);
+        fputs(cmd_error, stderr);
+        ovs_error(0, "%s: server returned an error", target);
+        exit(2);
+    } else if (cmd_result) {
+        fputs(cmd_result, stdout);
+    } else {
+        OVS_NOT_REACHED();
+    }
+
+    jsonrpc_close(client);
+    free(cmd_result);
+    free(cmd_error);
+    return 0;
+}
+
+static void
+usage(void)
+{
+    printf("\
+%s, for querying and controlling OVN daemon\n\
+usage: %s [TARGET] COMMAND [ARG...]\n\
+Targets:\n\
+  -t, --target=TARGET  pidfile or socket to contact\n\
+Common commands:\n\
+  list-commands      List commands supported by the target\n\
+  version            Print version of the target\n\
+  vlog/list          List current logging levels\n\
+  vlog/list-pattern  List logging patterns for each destination.\n\
+  vlog/set [SPEC]\n\
+      Set log levels as detailed in SPEC, which may include:\n\
+      A valid module name (all modules, by default)\n\
+      'syslog', 'console', 'file' (all destinations, by default))\n\
+      'off', 'emer', 'err', 'warn', 'info', or 'dbg' ('dbg', bydefault)\n\
+  vlog/reopen        Make the program reopen its log file\n\
+Other options:\n\
+  --timeout=SECS     wait at most SECS seconds for a response\n\
+  -h, --help         Print this helpful information\n\
+  -V, --version      Display ovn-appctl version information\n",
+           program_name, program_name);
+    exit(EXIT_SUCCESS);
+}
+
+static const char *
+parse_command_line(int argc, char *argv[])
+{
+    enum {
+        OPT_START = UCHAR_MAX + 1,
+        VLOG_OPTION_ENUMS
+    };
+    static const struct option long_options[] = {
+        {"target", required_argument, NULL, 't'},
+        {"execute", no_argument, NULL, 'e'},
+        {"help", no_argument, NULL, 'h'},
+        {"option", no_argument, NULL, 'o'},
+        {"version", no_argument, NULL, 'V'},
+        {"timeout", required_argument, NULL, 'T'},
+        VLOG_LONG_OPTIONS,
+        {NULL, 0, NULL, 0},
+    };
+    char *short_options_ =
+        ovs_cmdl_long_options_to_short_options(long_options);
+    char *short_options = xasprintf("+%s", short_options_);
+    const char *target;
+    int e_options;
+    unsigned int timeout = 0;
+
+    target = NULL;
+    e_options = 0;
+    for (;;) {
+        int option;
+
+        option = getopt_long(argc, argv, short_options, long_options, NULL);
+        if (option == -1) {
+            break;
+        }
+        switch (option) {
+        case 't':
+            if (target) {
+                ovs_fatal(0, "-t or --target may be specified only once");
+            }
+            target = optarg;
+            break;
+
+        case 'e':
+            /* We ignore -e for compatibility.  Older versions specified the
+             * command as the argument to -e.  Since the current version takes
+             * the command as non-option arguments and we say that -e has no
+             * arguments, this just works in the common case. */
+            if (e_options++) {
+                ovs_fatal(0, "-e or --execute may be speciifed only once");
+            }
+            break;
+
+        case 'h':
+            usage();
+            break;
+
+        case 'o':
+            ovs_cmdl_print_options(long_options);
+            exit(EXIT_SUCCESS);
+
+        case 'T':
+            if (!str_to_uint(optarg, 10, &timeout) || !timeout) {
+                ovs_fatal(0, "value %s on -T or --timeout is invalid", optarg);
+            }
+            break;
+
+        case 'V':
+            ovs_print_version(0, 0);
+            exit(EXIT_SUCCESS);
+
+        VLOG_OPTION_HANDLERS
+
+        case '?':
+            exit(EXIT_FAILURE);
+
+        default:
+            OVS_NOT_REACHED();
+        }
+    }
+    free(short_options_);
+    free(short_options);
+
+    ctl_timeout_setup(timeout);
+
+    if (optind >= argc) {
+        ovs_fatal(0, "at least one non-option argument is required "
+                  "(use --help for help)");
+    }
+
+    return target ? target : "ovn-controller";
+}
+
+static struct jsonrpc *
+connect_to_target(const char *target)
+{
+    struct jsonrpc *client;
+    char *socket_name;
+    int error;
+
+#ifndef _WIN32
+    if (target[0] != '/') {
+        char *pidfile_name;
+        pid_t pid;
+
+        pidfile_name = xasprintf("%s/%s.pid", ovn_rundir(), target);
+        pid = read_pidfile(pidfile_name);
+        if (pid < 0) {
+            ovs_fatal(-pid, "cannot read pidfile \"%s\"", pidfile_name);
+        }
+        free(pidfile_name);
+        socket_name = xasprintf("%s/%s.%ld.ctl",
+                                ovn_rundir(), target, (long int) pid);
+#else
+    /* On windows, if the 'target' contains ':', we make an assumption that
+     * it is an absolute path. */
+    if (!strchr(target, ':')) {
+        socket_name = xasprintf("%s/%s.ctl", ovn_rundir(), target);
+#endif
+    } else {
+        socket_name = xstrdup(target);
+    }
+
+    error = unixctl_client_create(socket_name, &client);
+    if (error) {
+        ovs_fatal(error, "cannot connect to \"%s\"", socket_name);
+    }
+    free(socket_name);
+
+    return client;
+}
+
diff --git a/utilities/ovn-ctl b/utilities/ovn-ctl
index c955aa177..4242cd2c8 100755
--- a/utilities/ovn-ctl
+++ b/utilities/ovn-ctl
@@ -44,13 +44,13 @@ pidfile_is_running () {
 
 stop_nb_ovsdb() {
     if pidfile_is_running $DB_NB_PID; then
-        ovs-appctl -t $OVN_RUNDIR/ovnnb_db.ctl exit
+        ovn-appctl -t $OVN_RUNDIR/ovnnb_db.ctl exit
     fi
 }
 
 stop_sb_ovsdb() {
     if pidfile_is_running $DB_SB_PID; then
-        ovs-appctl -t $OVN_RUNDIR/ovnsb_db.ctl exit
+        ovn-appctl -t $OVN_RUNDIR/ovnsb_db.ctl exit
     fi
 }
 
@@ -65,8 +65,8 @@ demote_ovnnb() {
     fi
 
     if test -e $ovnnb_active_conf_file; then
-        ovs-appctl -t $OVN_RUNDIR/ovnnb_db.ctl ovsdb-server/set-active-ovsdb-server `cat $ovnnb_active_conf_file`
-        ovs-appctl -t $OVN_RUNDIR/ovnnb_db.ctl ovsdb-server/connect-active-ovsdb-server
+        ovn-appctl -t $OVN_RUNDIR/ovnnb_db.ctl ovsdb-server/set-active-ovsdb-server `cat $ovnnb_active_conf_file`
+        ovn-appctl -t $OVN_RUNDIR/ovnnb_db.ctl ovsdb-server/connect-active-ovsdb-server
     else
         echo >&2 "$0: active server details not set"
         exit 1
@@ -79,8 +79,8 @@ demote_ovnsb() {
     fi
 
     if test -e $ovnsb_active_conf_file; then
-        ovs-appctl -t $OVN_RUNDIR/ovnsb_db.ctl ovsdb-server/set-active-ovsdb-server `cat $ovnsb_active_conf_file`
-        ovs-appctl -t $OVN_RUNDIR/ovnsb_db.ctl ovsdb-server/connect-active-ovsdb-server
+        ovn-appctl -t $OVN_RUNDIR/ovnsb_db.ctl ovsdb-server/set-active-ovsdb-server `cat $ovnsb_active_conf_file`
+        ovn-appctl -t $OVN_RUNDIR/ovnsb_db.ctl ovsdb-server/connect-active-ovsdb-server
     else
         echo >&2 "$0: active server details not set"
         exit 1
@@ -89,12 +89,12 @@ demote_ovnsb() {
 
 promote_ovnnb() {
     rm -f $ovnnb_active_conf_file
-    ovs-appctl -t $OVN_RUNDIR/ovnnb_db.ctl ovsdb-server/disconnect-active-ovsdb-server
+    ovn-appctl -t $OVN_RUNDIR/ovnnb_db.ctl ovsdb-server/disconnect-active-ovsdb-server
 }
 
 promote_ovnsb() {
     rm -f $ovnsb_active_conf_file
-    ovs-appctl -t $OVN_RUNDIR/ovnsb_db.ctl ovsdb-server/disconnect-active-ovsdb-server
+    ovn-appctl -t $OVN_RUNDIR/ovnsb_db.ctl ovsdb-server/disconnect-active-ovsdb-server
 }
 
 start_ovsdb__() {
@@ -274,7 +274,7 @@ start_ovsdb () {
 }
 
 sync_status() {
-    ovs-appctl -t $OVN_RUNDIR/ovn${1}_db.ctl ovsdb-server/sync-status | awk '{if(NR==1) print $2}'
+    ovn-appctl -t $OVN_RUNDIR/ovn${1}_db.ctl ovsdb-server/sync-status | awk '{if(NR==1) print $2}'
 }
 
 status_ovnnb() {
