diff --git a/python/common/kvstore/consul_client.py b/python/common/kvstore/consul_client.py
new file mode 100644
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--- /dev/null
+++ b/python/common/kvstore/consul_client.py
@@ -0,0 +1,304 @@
+# Copyright 2018-present Open Networking Foundation
+#
+# 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.
+
+from common.kvstore.kv_client import DEFAULT_TIMEOUT, Event, KVClient, KVPair, RETRY_BACKOFF
+from common.utils.asleep import asleep
+from common.utils.deferred_utils import DeferredWithTimeout, TimeOutError
+from consul import ConsulException
+from consul.twisted import Consul
+from structlog import get_logger
+from twisted.internet.defer import inlineCallbacks, returnValue, Deferred
+
+log = get_logger()
+
+class ConsulClient(KVClient):
+
+    def __init__(self, kv_host, kv_port):
+        KVClient.__init__(self, kv_host, kv_port)
+        self.session_id = None
+        self.client = Consul(kv_host, kv_port)
+
+    def watch(self, key, key_change_callback, timeout=DEFAULT_TIMEOUT):
+        self._retriggering_watch(key, key_change_callback, timeout)
+
+    @inlineCallbacks
+    def _retriggering_watch(self, key, key_change_callback, timeout):
+        self.key_watches[key] = ConsulWatch(self.client, key, key_change_callback, timeout)
+        yield self.key_watches[key].start()
+
+    def close_watch(self, key, timeout=DEFAULT_TIMEOUT):
+        if key in self.key_watches:
+            self.key_watches[key].stop()
+
+    @inlineCallbacks
+    def _op_with_retry(self, operation, key, value, timeout, *args, **kw):
+        log.debug('kv-op', operation=operation, key=key, timeout=timeout, args=args, kw=kw)
+        err = None
+        result = None
+        while True:
+            try:
+                if operation == 'GET':
+                    result = yield self._get(key, **kw)
+                elif operation == 'LIST':
+                    result, err = yield self._list(key)
+                elif operation == 'PUT':
+                    # Put returns a boolean response
+                    result = yield self.client.kv.put(key, value)
+                    if not result:
+                        err = 'put-failed'
+                elif operation == 'DELETE':
+                    # Delete returns a boolean response
+                    result = yield self.client.kv.delete(key)
+                    if not result:
+                        err = 'delete-failed'
+                elif operation == 'RESERVE':
+                    result, err = yield self._reserve(key, value, **kw)
+                elif operation == 'RENEW':
+                    result, err = yield self._renew_reservation(key)
+                elif operation == 'RELEASE':
+                    result, err = yield self._release_reservation(key)
+                elif operation == 'RELEASE-ALL':
+                    err = yield self._release_all_reservations()
+                self._clear_backoff()
+                break
+            except ConsulException as ex:
+                if 'ConnectionRefusedError' in ex.message:
+                    log.exception('comms-exception', ex=ex)
+                    yield self._backoff('consul-not-up')
+                else:
+                    log.error('consul-specific-exception', ex=ex)
+                    err = ex
+            except Exception as ex:
+                log.error('consul-exception', ex=ex)
+                err = ex
+
+            if timeout > 0 and self.retry_time > timeout:
+                err = 'operation-timed-out'
+            if err is not None:
+                self._clear_backoff()
+                break
+
+        returnValue((result,err))
+
+    @inlineCallbacks
+    def _get(self, key, **kw):
+        kvp = None
+        index, rec = yield self.client.kv.get(key, **kw)
+        if rec is not None:
+            kvp = KVPair(rec['Key'], rec['Value'], index)
+        returnValue(kvp)
+
+    @inlineCallbacks
+    def _list(self, key):
+        err = None
+        list = []
+        index, recs = yield self.client.kv.get(key, recurse=True)
+        for rec in recs:
+            list.append(KVPair(rec['Key'], rec['Value'], rec['ModifyIndex']))
+        returnValue((list, err))
+
+    @inlineCallbacks
+    def _reserve(self, key, value, **kw):
+        for name, val in kw.items():
+            if name == 'ttl':
+                ttl = val
+                break
+        reserved = False
+        err = 'reservation-failed'
+        owner = None
+
+        # Create a session
+        self.session_id = yield self.client.session.create(behavior='delete',
+                                                           ttl=ttl) # lock_delay=1)
+        log.debug('create-session', id=self.session_id)
+        # Try to acquire the key
+        result = yield self.client.kv.put(key, value, acquire=self.session_id)
+        log.debug('key-acquire', key=key, value=value, sess=self.session_id, result=result)
+
+        # Check if reservation succeeded
+        index, record = yield self.client.kv.get(key)
+        if record is not None and 'Value' in record:
+            owner = record['Value']
+            log.debug('get-key', session=record['Session'], owner=owner)
+            if record['Session'] == self.session_id and owner == value:
+                reserved = True
+                log.debug('key-reserved', key=key, value=value, ttl=ttl)
+                # Add key to reservation list
+                self.key_reservations[key] = self.session_id
+            else:
+                log.debug('reservation-held-by-another', owner=owner)
+
+        if reserved:
+            err = None
+        returnValue((owner, err))
+
+    @inlineCallbacks
+    def _renew_reservation(self, key):
+        result = None
+        err = None
+        if key not in self.key_reservations:
+            err = 'key-not-reserved'
+        else:
+            session_id = self.key_reservations[key]
+            # A successfully renewed session returns an object with fields:
+            # Node, CreateIndex, Name, ModifyIndex, ID, Behavior, TTL,
+            # LockDelay, and Checks
+            result = yield self.client.session.renew(session_id=session_id)
+            log.debug('session-renew', result=result)
+        if result is None:
+            err = 'session-renewal-failed'
+        returnValue((result, err))
+
+    @inlineCallbacks
+    def _release_reservation(self, key):
+        err = None
+        if key not in self.key_reservations:
+            err = 'key-not-reserved'
+        else:
+            session_id = self.key_reservations[key]
+            # A successfully destroyed session returns a boolean result
+            success = yield self.client.session.destroy(session_id)
+            log.debug('session-destroy', result=success)
+            if not success:
+                err = 'session-destroy-failed'
+            self.session_id = None
+            self.key_reservations.pop(key)
+        returnValue((success, err))
+
+    @inlineCallbacks
+    def _release_all_reservations(self):
+        err = None
+        keys_to_delete = []
+        for key in self.key_reservations:
+            session_id = self.key_reservations[key]
+            # A successfully destroyed session returns a boolean result
+            success = yield self.client.session.destroy(session_id)
+            if not success:
+                err = 'session-destroy-failed'
+                log.debug('session-destroy', id=session_id, result=success)
+            self.session_id = None
+            keys_to_delete.append(key)
+        for key in keys_to_delete:
+            self.key_reservations.pop(key)
+        returnValue(err)
+
+
+class ConsulWatch():
+
+    def __init__(self, consul, key, callback, timeout):
+        self.client = consul
+        self.key = key
+        self.index = None
+        self.callback = callback
+        self.timeout = timeout
+        self.period = 60
+        self.running = True
+        self.retries = 0
+        self.retry_time = 0
+
+    @inlineCallbacks
+    def start(self):
+        self.running = True
+        index, rec = yield self._get_with_retry(self.key, None,
+                                              timeout=self.timeout)
+        self.index = str(index)
+
+        @inlineCallbacks
+        def _get(key, deferred):
+            try:
+                index, rec = yield self._get_with_retry(key, None,
+                                                     timeout=self.timeout,
+                                                     index=self.index)
+                self.index = str(index)
+                if not deferred.called:
+                    log.debug('got-result-cancelling-deferred')
+                    deferred.callback((self.index, rec))
+            except Exception as e:
+                log.exception('got-exception', e=e)
+
+        while self.running:
+            try:
+                rcvd = DeferredWithTimeout(timeout=self.period)
+                _get(self.key, rcvd)
+                try:
+                    # Update index for next watch iteration
+                    index, rec = yield rcvd
+                    log.debug('event-received', index=index, rec=rec)
+                    # Notify client of key change event
+                    if rec is None:
+                        # Key has been deleted
+                        self._send_event(Event(Event.DELETE, self.key, None))
+                    else:
+                        self._send_event(Event(Event.PUT, rec['Key'], rec['Value']))
+                except TimeOutError as e:
+                    log.debug('no-events-over-watch-period', key=self.key)
+                except Exception as e:
+                    log.exception('exception', e=e)
+            except Exception as e:
+                log.exception('exception', e=e)
+
+        log.debug('close-watch', key=self.key)
+
+    def stop(self):
+        self.running = False
+        self.callback = None
+
+    @inlineCallbacks
+    def _get_with_retry(self, key, value, timeout, *args, **kw):
+        log.debug('watch-period', key=key, period=self.period, timeout=timeout, args=args, kw=kw)
+        err = None
+        result = None
+        while True:
+            try:
+                result = yield self.client.kv.get(key, **kw)
+                self._clear_backoff()
+                break
+            except ConsulException as ex:
+                err = ex
+                if 'ConnectionRefusedError' in ex.message:
+                    self._send_event(Event(Event.CONNECTION_DOWN, self.key, None))
+                    log.exception('comms-exception', ex=ex)
+                    yield self._backoff('consul-not-up')
+                else:
+                    log.error('consul-specific-exception', ex=ex)
+            except Exception as ex:
+                err = ex
+                log.error('consul-exception', ex=ex)
+
+            if timeout > 0 and self.retry_time > timeout:
+                err = 'operation-timed-out'
+            if err is not None:
+                self._clear_backoff()
+                break
+
+        returnValue(result)
+
+    def _send_event(self, event):
+        if self.callback is not None:
+            self.callback(event)
+
+    def _backoff(self, msg):
+        wait_time = RETRY_BACKOFF[min(self.retries, len(RETRY_BACKOFF) - 1)]
+        self.retry_time += wait_time
+        self.retries += 1
+        log.error(msg, next_retry_in_secs=wait_time,
+                  total_delay_in_secs = self.retry_time,
+                  retries=self.retries)
+        return asleep(wait_time)
+
+    def _clear_backoff(self):
+        if self.retries:
+            log.debug('reconnected-to-kv', after_retries=self.retries)
+            self.retries = 0
+            self.retry_time = 0