diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..60f17bc
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,2 @@
+venv
+.tox
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..07bffa2
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,15 @@
+# testing related
+.coverage
+.tox/
+coverage.xml
+nose-results.xml
+test/unit/tmp
+
+# python distribution related
+dist
+*.egg-info
+
+# ide workspace
+.idea
+
+*.pyc
diff --git a/.gitreview b/.gitreview
new file mode 100644
index 0000000..e299711
--- /dev/null
+++ b/.gitreview
@@ -0,0 +1,5 @@
+[gerrit]
+host=gerrit.opencord.org
+port=29418
+project=voltha-ponsimolt-adapter
+defaultremote=origin
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..fba9129
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,146 @@
+#
+# Copyright 2016 the original author or authors.
+#
+# 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.
+#
+
+# set default shell
+SHELL = bash -e -o pipefail
+
+# Variables
+VERSION                    ?= $(shell cat ./VERSION)
+
+DOCKER_LABEL_VCS_DIRTY     = false
+ifneq ($(shell git ls-files --others --modified --exclude-standard 2>/dev/null | wc -l | sed -e 's/ //g'),0)
+    DOCKER_LABEL_VCS_DIRTY = true
+endif
+## Docker related
+DOCKER_EXTRA_ARGS          ?=
+DOCKER_REGISTRY            ?=
+DOCKER_REPOSITORY          ?=
+DOCKER_TAG                 ?= ${VERSION}$(shell [[ ${DOCKER_LABEL_VCS_DIRTY} == "true" ]] && echo "-dirty" || true)
+PONSIMOLT_IMAGENAME        := ${DOCKER_REGISTRY}${DOCKER_REPOSITORY}voltha-adapter-ponsim-olt
+
+## Docker labels. Only set ref and commit date if committed
+DOCKER_LABEL_VCS_URL       ?= $(shell git remote get-url $(shell git remote))
+DOCKER_LABEL_VCS_REF       = $(shell git rev-parse HEAD)
+DOCKER_LABEL_BUILD_DATE    ?= $(shell date -u "+%Y-%m-%dT%H:%M:%SZ")
+DOCKER_LABEL_COMMIT_DATE   = $(shell git show -s --format=%cd --date=iso-strict HEAD)
+
+DOCKER_BUILD_ARGS ?= \
+	${DOCKER_EXTRA_ARGS} \
+	--build-arg org_label_schema_version="${VERSION}" \
+	--build-arg org_label_schema_vcs_url="${DOCKER_LABEL_VCS_URL}" \
+	--build-arg org_label_schema_vcs_ref="${DOCKER_LABEL_VCS_REF}" \
+	--build-arg org_label_schema_build_date="${DOCKER_LABEL_BUILD_DATE}" \
+	--build-arg org_opencord_vcs_commit_date="${DOCKER_LABEL_COMMIT_DATE}" \
+	--build-arg org_opencord_vcs_dirty="${DOCKER_LABEL_VCS_DIRTY}"
+
+DOCKER_BUILD_ARGS_LOCAL ?= ${DOCKER_BUILD_ARGS} \
+	--build-arg LOCAL_PYVOLTHA=${LOCAL_PYVOLTHA} \
+	--build-arg LOCAL_PROTOS=${LOCAL_PROTOS}
+
+.PHONY: local-protos local-pyvoltha
+
+# This should to be the first and default target in this Makefile
+help:
+	@echo "Usage: make [<target>]"
+	@echo "where available targets are:"
+	@echo
+	@echo "build                : Build the docker images."
+	@echo "                         - If this is the first time you are building, choose 'make build' option."
+	@echo "adapter_ponsim_olt   : Build the ponsim olt adapter docker image"
+	@echo "venv                 : Build local Python virtualenv"
+	@echo "clean                : Remove files created by the build and tests"
+	@echo "distclean            : Remove venv directory"
+	@echo "docker-push          : Push the docker images to an external repository"
+	@echo "lint-dockerfile      : Perform static analysis on Dockerfiles"
+	@echo "lint                 : Shorthand for lint-style & lint-sanity"
+	@echo "test                 : Generate reports for all go tests"
+	@echo
+
+## Local Development Helpers
+local-protos:
+	@mkdir -p local_imports
+ifdef LOCAL_PROTOS
+	rm -rf local_imports/voltha-protos
+	mkdir -p local_imports/voltha-protos/dist
+	cp ../voltha-protos/dist/*.tar.gz local_imports/voltha-protos/dist/
+endif
+
+local-pyvoltha:
+	@mkdir -p local_imports
+ifdef LOCAL_PYVOLTHA
+	rm -rf local_imports/pyvoltha
+	mkdir -p local_imports/pyvoltha/dist
+	cp ../pyvoltha/dist/*.tar.gz local_imports/pyvoltha/dist/
+endif
+
+## Python venv dev environment
+
+VENVDIR := venv
+
+venv: distclean local-protos local-pyvoltha
+	virtualenv ${VENVDIR};\
+	source ./${VENVDIR}/bin/activate ; set -u ;\
+	rm -f ${VENVDIR}/local/bin ${VENVDIR}/local/lib ${VENVDIR}/local/include ;\
+	pip install -r requirements.txt
+ifdef LOCAL_PYVOLTHA
+	source ./${VENVDIR}/bin/activate ; set -u ;\
+	pip install local_imports/pyvoltha/dist/*.tar.gz
+endif
+ifdef LOCAL_PROTOS
+	source ./${VENVDIR}/bin/activate ; set -u ;\
+	pip install local_imports/voltha-protos/dist/*.tar.gz
+endif
+
+## Docker targets
+
+build: docker-build
+
+docker-build: adapter_ponsim_olt
+
+adapter_ponsim_olt: local-protos local-pyvoltha
+	docker build $(DOCKER_BUILD_ARGS_LOCAL) -t ${PONSIMOLT_IMAGENAME}:${DOCKER_TAG} -t ${PONSIMOLT_IMAGENAME}:latest -f docker/Dockerfile.adapter_ponsim_olt .
+
+docker-push:
+	docker push ${PONSIMOLT_IMAGENAME}:${DOCKER_TAG}
+
+## lint and unit tests
+
+PATH:=$(GOPATH)/bin:$(PATH)
+HADOLINT=$(shell PATH=$(GOPATH):$(PATH) which hadolint)
+lint-dockerfile:
+ifeq (,$(shell PATH=$(GOPATH):$(PATH) which hadolint))
+	mkdir -p $(GOPATH)/bin
+	curl -o $(GOPATH)/bin/hadolint -sNSL https://github.com/hadolint/hadolint/releases/download/v1.17.1/hadolint-$(shell uname -s)-$(shell uname -m)
+	chmod 755 $(GOPATH)/bin/hadolint
+endif
+	@echo "Running Dockerfile lint check ..."
+	@hadolint $$(find . -name "Dockerfile.*")
+	@echo "Dockerfile lint check OK"
+
+lint: lint-dockerfile
+
+test:
+	@ echo "Executing unit tests w/tox"
+	tox
+
+clean:
+	rm -rf local_imports
+	find . -name '*.pyc' | xargs rm -f
+
+distclean: clean
+	rm -rf ${VENVDIR}
+
+# end file
diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..84e6d84
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+2.2.1-dev
diff --git a/docker/Dockerfile.adapter_ponsim_olt b/docker/Dockerfile.adapter_ponsim_olt
new file mode 100644
index 0000000..97b4182
--- /dev/null
+++ b/docker/Dockerfile.adapter_ponsim_olt
@@ -0,0 +1,80 @@
+# Copyright 2016 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+FROM ubuntu:16.04
+
+# Update to have latest images
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+	ca-certificates=20170717~16.04.2 \
+        python=2.7.12-1~16.04 \
+        openssl=1.0.2g-1ubuntu4.15 \
+        iproute2=4.3.0-1ubuntu3.16.04.5 \
+        libpcap-dev=1.7.4-2 \
+        wget=1.17.1-1ubuntu1.5 \
+        build-essential=12.1ubuntu2 \
+        git=1:2.7.4-0ubuntu1.6 \
+        binutils=2.26.1-1ubuntu1~16.04.8 \
+        python-dev=2.7.12-1~16.04 \
+        libffi-dev=3.2.1-4 \
+        libssl-dev=1.0.2g-1ubuntu4.15 \
+        && apt-get clean && rm -rf /var/lib/apt/lists/*
+
+# Install current version of pip rather than outdated pip from apt
+RUN wget -O /tmp/get-pip.py https://bootstrap.pypa.io/get-pip.py
+RUN python /tmp/get-pip.py
+
+# Install adapter requirements.
+COPY requirements.txt /tmp/requirements.txt
+RUN pip install -r /tmp/requirements.txt
+
+ARG LOCAL_PYVOLTHA
+ARG LOCAL_PROTOS
+COPY local_imports/ /local_imports/
+RUN if [ -n "$LOCAL_PYVOLTHA" ] ; then \
+    PYVOLTHA_PATH=$(ls /local_imports/pyvoltha/dist/) ; \
+    printf "/local_imports/pyvoltha/dist/%s\npyvoltha" "$PYVOLTHA_PATH" > pyvoltha-install.txt ; \
+    pip install -r pyvoltha-install.txt ; \
+fi
+
+RUN if [ -n "$LOCAL_PROTOS" ] ; then \
+    PROTOS_PATH=$(ls /local_imports/voltha-protos/dist/) ; \
+    printf "/local_imports/voltha-protos/dist/%s\nvoltha-protos" "$PROTOS_PATH" > protos-install.txt ; \
+    pip install -r protos-install.txt ; \
+fi
+
+# Bundle app source
+RUN mkdir /voltha && touch /voltha/__init__.py
+ENV PYTHONPATH=/voltha
+COPY ponsim_olt /voltha/python/adapters/ponsim_olt
+COPY VERSION /voltha/python/adapters/ponsim_olt
+RUN touch /voltha/python/__init__.py
+RUN touch /voltha/python/adapters/__init__.py
+
+# Exposing process and default entry point
+CMD ["python", "/voltha/python/adapters/ponsim_olt/main.py"]
+
+# Label image
+ARG org_label_schema_version=unknown
+ARG org_label_schema_vcs_url=unknown
+ARG org_label_schema_vcs_ref=unknown
+ARG org_label_schema_build_date=unknown
+ARG org_opencord_vcs_commit_date=unknown
+
+LABEL org.label-schema.schema-version=1.0 \
+      org.label-schema.name=voltha-adapter-ponsim-olt \
+      org.label-schema.version=$org_label_schema_version \
+      org.label-schema.vcs-url=$org_label_schema_vcs_url \
+      org.label-schema.vcs-ref=$org_label_schema_vcs_ref \
+      org.label-schema.build-date=$org_label_schema_build_date \
+      org.opencord.vcs-commit-date=$org_opencord_vcs_commit_date
diff --git a/ponsim_olt/__init__.py b/ponsim_olt/__init__.py
new file mode 100644
index 0000000..4a82628
--- /dev/null
+++ b/ponsim_olt/__init__.py
@@ -0,0 +1,13 @@
+# 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.
diff --git a/ponsim_olt/main.py b/ponsim_olt/main.py
new file mode 100755
index 0000000..5a49184
--- /dev/null
+++ b/ponsim_olt/main.py
@@ -0,0 +1,495 @@
+#!/usr/bin/env python
+#
+# Copyright 2018 the original author or authors.
+#
+# 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.
+#
+
+"""Ponsim OLT Adapter main entry point"""
+
+import argparse
+import os
+import time
+
+import arrow
+import yaml
+from packaging.version import Version
+from simplejson import dumps
+from twisted.internet.defer import inlineCallbacks, returnValue
+from twisted.internet.task import LoopingCall
+from zope.interface import implementer
+
+from pyvoltha.common.structlog_setup import setup_logging, update_logging
+from pyvoltha.common.utils.asleep import asleep
+from pyvoltha.common.utils.deferred_utils import TimeOutError
+from pyvoltha.common.utils.dockerhelpers import get_my_containers_name
+from pyvoltha.common.utils.nethelpers import get_my_primary_local_ipv4, \
+    get_my_primary_interface
+from pyvoltha.common.utils.registry import registry, IComponent
+from pyvoltha.adapters.kafka.adapter_proxy import AdapterProxy
+from pyvoltha.adapters.kafka.adapter_request_facade import AdapterRequestFacade
+from pyvoltha.adapters.kafka.core_proxy import CoreProxy
+from pyvoltha.adapters.kafka.kafka_inter_container_library import IKafkaMessagingProxy, \
+    get_messaging_proxy
+from pyvoltha.adapters.kafka.kafka_proxy import KafkaProxy, get_kafka_proxy
+from ponsim_olt import PonSimOltAdapter
+from voltha_protos.adapter_pb2 import AdapterConfig
+
+defs = dict(
+    version_file='./VERSION',
+    config=os.environ.get('CONFIG', './ponsim_olt.yml'),
+    container_name_regex=os.environ.get('CONTAINER_NUMBER_EXTRACTOR', '^.*\.(['
+                                                                      '0-9]+)\..*$'),
+    consul=os.environ.get('CONSUL', 'localhost:8500'),
+    name=os.environ.get('NAME', 'ponsim_olt'),
+    vendor=os.environ.get('VENDOR', 'Voltha Project'),
+    device_type=os.environ.get('DEVICE_TYPE', 'ponsim_olt'),
+    accept_bulk_flow=os.environ.get('ACCEPT_BULK_FLOW', True),
+    accept_atomic_flow=os.environ.get('ACCEPT_ATOMIC_FLOW', True),
+    etcd=os.environ.get('ETCD', 'localhost:2379'),
+    core_topic=os.environ.get('CORE_TOPIC', 'rwcore'),
+    interface=os.environ.get('INTERFACE', get_my_primary_interface()),
+    instance_id=os.environ.get('INSTANCE_ID', os.environ.get('HOSTNAME', '1')),
+    kafka_adapter=os.environ.get('KAFKA_ADAPTER', '172.20.10.3:9092'),
+    kafka_cluster=os.environ.get('KAFKA_CLUSTER', '172.20.10.3:9092'),
+    backend=os.environ.get('BACKEND', 'none'),
+    retry_interval=os.environ.get('RETRY_INTERVAL', 2),
+    heartbeat_topic=os.environ.get('HEARTBEAT_TOPIC', "adapters.heartbeat"),
+)
+
+
+def parse_args():
+    parser = argparse.ArgumentParser()
+
+    _help = ('Path to ponsim_onu.yml config file (default: %s). '
+             'If relative, it is relative to main.py of ponsim adapter.'
+             % defs['config'])
+    parser.add_argument('-c', '--config',
+                        dest='config',
+                        action='store',
+                        default=defs['config'],
+                        help=_help)
+
+    _help = 'Regular expression for extracting conatiner number from ' \
+            'container name (default: %s)' % defs['container_name_regex']
+    parser.add_argument('-X', '--container-number-extractor',
+                        dest='container_name_regex',
+                        action='store',
+                        default=defs['container_name_regex'],
+                        help=_help)
+
+    _help = '<hostname>:<port> to consul agent (default: %s)' % defs['consul']
+    parser.add_argument('-C', '--consul',
+                        dest='consul',
+                        action='store',
+                        default=defs['consul'],
+                        help=_help)
+
+    _help = 'name of this adapter (default: %s)' % defs['name']
+    parser.add_argument('-na', '--name',
+                        dest='name',
+                        action='store',
+                        default=defs['name'],
+                        help=_help)
+
+    _help = 'vendor of this adapter (default: %s)' % defs['vendor']
+    parser.add_argument('-ven', '--vendor',
+                        dest='vendor',
+                        action='store',
+                        default=defs['vendor'],
+                        help=_help)
+
+    _help = 'supported device type of this adapter (default: %s)' % defs[
+        'device_type']
+    parser.add_argument('-dt', '--device_type',
+                        dest='device_type',
+                        action='store',
+                        default=defs['device_type'],
+                        help=_help)
+
+    _help = 'specifies whether the device type accepts bulk flow updates ' \
+            'adapter (default: %s)' % defs['accept_bulk_flow']
+    parser.add_argument('-abf', '--accept_bulk_flow',
+                        dest='accept_bulk_flow',
+                        action='store',
+                        default=defs['accept_bulk_flow'],
+                        help=_help)
+
+    _help = 'specifies whether the device type accepts add/remove flow ' \
+            '(default: %s)' % defs['accept_atomic_flow']
+    parser.add_argument('-aaf', '--accept_atomic_flow',
+                        dest='accept_atomic_flow',
+                        action='store',
+                        default=defs['accept_atomic_flow'],
+                        help=_help)
+
+    _help = '<hostname>:<port> to etcd server (default: %s)' % defs['etcd']
+    parser.add_argument('-e', '--etcd',
+                        dest='etcd',
+                        action='store',
+                        default=defs['etcd'],
+                        help=_help)
+
+    _help = ('unique string id of this container instance (default: %s)'
+             % defs['instance_id'])
+    parser.add_argument('-i', '--instance-id',
+                        dest='instance_id',
+                        action='store',
+                        default=defs['instance_id'],
+                        help=_help)
+
+    _help = 'ETH interface to recieve (default: %s)' % defs['interface']
+    parser.add_argument('-I', '--interface',
+                        dest='interface',
+                        action='store',
+                        default=defs['interface'],
+                        help=_help)
+
+    _help = 'omit startup banner log lines'
+    parser.add_argument('-n', '--no-banner',
+                        dest='no_banner',
+                        action='store_true',
+                        default=False,
+                        help=_help)
+
+    _help = 'do not emit periodic heartbeat log messages'
+    parser.add_argument('-N', '--no-heartbeat',
+                        dest='no_heartbeat',
+                        action='store_true',
+                        default=False,
+                        help=_help)
+
+    _help = "suppress debug and info logs"
+    parser.add_argument('-q', '--quiet',
+                        dest='quiet',
+                        action='count',
+                        help=_help)
+
+    _help = 'enable verbose logging'
+    parser.add_argument('-v', '--verbose',
+                        dest='verbose',
+                        action='count',
+                        help=_help)
+
+    _help = ('use docker container name as conatiner instance id'
+             ' (overrides -i/--instance-id option)')
+    parser.add_argument('--instance-id-is-container-name',
+                        dest='instance_id_is_container_name',
+                        action='store_true',
+                        default=False,
+                        help=_help)
+
+    _help = ('<hostname>:<port> of the kafka adapter broker (default: %s). ('
+             'If not '
+             'specified (None), the address from the config file is used'
+             % defs['kafka_adapter'])
+    parser.add_argument('-KA', '--kafka_adapter',
+                        dest='kafka_adapter',
+                        action='store',
+                        default=defs['kafka_adapter'],
+                        help=_help)
+
+    _help = ('<hostname>:<port> of the kafka cluster broker (default: %s). ('
+             'If not '
+             'specified (None), the address from the config file is used'
+             % defs['kafka_cluster'])
+    parser.add_argument('-KC', '--kafka_cluster',
+                        dest='kafka_cluster',
+                        action='store',
+                        default=defs['kafka_cluster'],
+                        help=_help)
+
+    _help = 'backend to use for config persitence'
+    parser.add_argument('-b', '--backend',
+                        default=defs['backend'],
+                        choices=['none', 'consul', 'etcd'],
+                        help=_help)
+
+    _help = 'topic of core on the kafka bus'
+    parser.add_argument('-ct', '--core_topic',
+                        dest='core_topic',
+                        action='store',
+                        default=defs['core_topic'],
+                        help=_help)
+
+    args = parser.parse_args()
+
+    # post-processing
+
+    if args.instance_id_is_container_name:
+        args.instance_id = get_my_containers_name()
+
+    return args
+
+
+def load_config(args):
+    path = args.config
+    if path.startswith('.'):
+        dir = os.path.dirname(os.path.abspath(__file__))
+        path = os.path.join(dir, path)
+    path = os.path.abspath(path)
+    with open(path) as fd:
+        config = yaml.load(fd)
+    return config
+
+
+def print_banner(log):
+    log.info(' ____                 _              ___  _   _____   ')
+    log.info('|  _ \ ___  _ __  ___(_)_ __ ___    / _ \| | |_   _|  ')
+    log.info('| |_) / _ \| \'_ \/ __| | \'_ ` _ \  | | | | |   | |  ')
+    log.info('|  __/ (_) | | | \__ \ | | | | | | | |_| | |___| |    ')
+    log.info('|_|   \___/|_| |_|___/_|_| |_| |_|  \___/|_____|_|    ')
+    log.info('                                                      ')
+    log.info('   _       _             _                            ')
+    log.info('  / \   __| | __ _ _ __ | |_ ___ _ __                 ')
+    log.info('  / _ \ / _` |/ _` | \'_ \| __/ _ \ \'__|             ')
+    log.info(' / ___ \ (_| | (_| | |_) | ||  __/ |                  ')
+    log.info('/_/   \_\__,_|\__,_| .__/ \__\___|_|                  ')
+    log.info('                   |_|                                ')
+    log.info('(to stop: press Ctrl-C)')
+
+
+@implementer(IComponent)
+class Main(object):
+
+    def __init__(self):
+
+        self.args = args = parse_args()
+        self.config = load_config(args)
+
+        verbosity_adjust = (args.verbose or 0) - (args.quiet or 0)
+        self.log = setup_logging(self.config.get('logging', {}),
+                                 args.instance_id,
+                                 verbosity_adjust=verbosity_adjust)
+        self.log.info('container-number-extractor',
+                      regex=args.container_name_regex)
+
+        self.ponsim_olt_adapter_version = self.get_version()
+        self.log.info('Ponsim-OLT-Adapter-Version', version=
+        self.ponsim_olt_adapter_version)
+
+        if not args.no_banner:
+            print_banner(self.log)
+
+        self.adapter = None
+        # Create a unique instance id using the passed-in instance id and
+        # UTC timestamp
+        current_time = arrow.utcnow().timestamp
+        self.instance_id = self.args.instance_id + '_' + str(current_time)
+
+        self.core_topic = args.core_topic
+        self.listening_topic = args.name
+        self.startup_components()
+
+        if not args.no_heartbeat:
+            self.start_heartbeat()
+            self.start_kafka_cluster_heartbeat(self.instance_id)
+
+    def get_version(self):
+        path = defs['version_file']
+        if not path.startswith('/'):
+            dir = os.path.dirname(os.path.abspath(__file__))
+            path = os.path.join(dir, path)
+
+        path = os.path.abspath(path)
+        version_file = open(path, 'r')
+        v = version_file.read()
+
+        # Use Version to validate the version string - exception will be raised
+        # if the version is invalid
+        Version(v)
+
+        version_file.close()
+        return v
+
+    def start(self):
+        self.start_reactor()  # will not return except Keyboard interrupt
+
+    def stop(self):
+        pass
+
+    def get_args(self):
+        """Allow access to command line args"""
+        return self.args
+
+    def get_config(self):
+        """Allow access to content of config file"""
+        return self.config
+
+    def _get_adapter_config(self):
+        cfg = AdapterConfig()
+        return cfg
+
+    @inlineCallbacks
+    def startup_components(self):
+        try:
+            self.log.info('starting-internal-components',
+                          consul=self.args.consul,
+                          etcd=self.args.etcd)
+
+            registry.register('main', self)
+
+            # Update the logger to output the vcore id.
+            self.log = update_logging(instance_id=self.instance_id,
+                                      vcore_id=None)
+
+            yield registry.register(
+                'kafka_cluster_proxy',
+                KafkaProxy(
+                    self.args.consul,
+                    self.args.kafka_cluster,
+                    config=self.config.get('kafka-cluster-proxy', {})
+                )
+            ).start()
+
+            config = self._get_adapter_config()
+
+            self.core_proxy = CoreProxy(
+                kafka_proxy=None,
+                default_core_topic=self.core_topic,
+                my_listening_topic=self.listening_topic)
+
+            self.adapter_proxy = AdapterProxy(
+                kafka_proxy=None,
+                core_topic=self.core_topic,
+                my_listening_topic=self.listening_topic)
+
+            self.adapter = PonSimOltAdapter(core_proxy=self.core_proxy,
+                                            adapter_proxy=self.adapter_proxy,
+                                            config=config)
+
+            ponsim_request_handler = AdapterRequestFacade(adapter=self.adapter,
+                                                    core_proxy=self.core_proxy)
+
+            yield registry.register(
+                'kafka_adapter_proxy',
+                IKafkaMessagingProxy(
+                    kafka_host_port=self.args.kafka_adapter,
+                    # TODO: Add KV Store object reference
+                    kv_store=self.args.backend,
+                    default_topic=self.args.name,
+                    group_id_prefix=self.args.instance_id,
+                    target_cls=ponsim_request_handler
+                )
+            ).start()
+
+            self.core_proxy.kafka_proxy = get_messaging_proxy()
+            self.adapter_proxy.kafka_proxy = get_messaging_proxy()
+
+            # retry for ever
+            res = yield self._register_with_core(-1)
+
+            self.log.info('started-internal-services')
+
+        except Exception as e:
+            self.log.exception('Failure-to-start-all-components', e=e)
+
+    @inlineCallbacks
+    def shutdown_components(self):
+        """Execute before the reactor is shut down"""
+        self.log.info('exiting-on-keyboard-interrupt')
+        for component in reversed(registry.iterate()):
+            yield component.stop()
+
+        import threading
+        self.log.info('THREADS:')
+        main_thread = threading.current_thread()
+        for t in threading.enumerate():
+            if t is main_thread:
+                continue
+            if not t.isDaemon():
+                continue
+            self.log.info('joining thread {} {}'.format(
+                t.getName(), "daemon" if t.isDaemon() else "not-daemon"))
+            t.join()
+
+    def start_reactor(self):
+        from twisted.internet import reactor
+        reactor.callWhenRunning(
+            lambda: self.log.info('twisted-reactor-started'))
+        reactor.addSystemEventTrigger('before', 'shutdown',
+                                      self.shutdown_components)
+        reactor.run()
+
+    @inlineCallbacks
+    def _register_with_core(self, retries):
+        while 1:
+            try:
+                resp = yield self.core_proxy.register(
+                    self.adapter.adapter_descriptor(),
+                    self.adapter.device_types())
+                if resp:
+                    self.log.info('registered-with-core',
+                                  coreId=resp.instance_id)
+                returnValue(resp)
+            except TimeOutError as e:
+                self.log.warn("timeout-when-registering-with-core", e=e)
+                if retries == 0:
+                    self.log.exception("no-more-retries", e=e)
+                    raise
+                else:
+                    retries = retries if retries < 0 else retries - 1
+                    yield asleep(defs['retry_interval'])
+            except Exception as e:
+                self.log.exception("failed-registration", e=e)
+                raise
+
+    def start_heartbeat(self):
+
+        t0 = time.time()
+        t0s = time.ctime(t0)
+
+        def heartbeat():
+            self.log.debug(status='up', since=t0s, uptime=time.time() - t0)
+
+        lc = LoopingCall(heartbeat)
+        lc.start(10)
+
+    # Temporary function to send a heartbeat message to the external kafka
+    # broker
+    def start_kafka_cluster_heartbeat(self, instance_id):
+        # For heartbeat we will send a message to a specific "voltha-heartbeat"
+        #  topic.  The message is a protocol buf
+        # message
+        message = dict(
+            type='heartbeat',
+            adapter=self.args.name,
+            instance=instance_id,
+            ip=get_my_primary_local_ipv4()
+        )
+        topic = defs['heartbeat_topic']
+
+        def send_msg(start_time):
+            try:
+                kafka_cluster_proxy = get_kafka_proxy()
+                if kafka_cluster_proxy and not kafka_cluster_proxy.is_faulty():
+                    # self.log.debug('kafka-proxy-available')
+                    message['ts'] = arrow.utcnow().timestamp
+                    message['uptime'] = time.time() - start_time
+                    # self.log.debug('start-kafka-heartbeat')
+                    kafka_cluster_proxy.send_message(topic, dumps(message))
+                else:
+                    self.log.error('kafka-proxy-unavailable')
+            except Exception, e:
+                self.log.exception('failed-sending-message-heartbeat', e=e)
+
+        try:
+            t0 = time.time()
+            lc = LoopingCall(send_msg, t0)
+            lc.start(10)
+        except Exception, e:
+            self.log.exception('failed-kafka-heartbeat', e=e)
+
+
+if __name__ == '__main__':
+    Main().start()
diff --git a/ponsim_olt/ponsim_olt.py b/ponsim_olt/ponsim_olt.py
new file mode 100644
index 0000000..c99fcac
--- /dev/null
+++ b/ponsim_olt/ponsim_olt.py
@@ -0,0 +1,665 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# 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.
+#
+
+"""
+Fully simulated OLT adapter.
+"""
+
+import arrow
+import grpc
+import structlog
+from google.protobuf.empty_pb2 import Empty
+from google.protobuf.json_format import MessageToDict
+from scapy.layers.inet import Raw
+import json
+from google.protobuf.message import Message
+from grpc._channel import _Rendezvous
+from scapy.layers.l2 import Ether, Dot1Q
+from simplejson import dumps
+from twisted.internet import reactor
+from twisted.internet.defer import inlineCallbacks, returnValue
+from twisted.internet.task import LoopingCall
+
+from pyvoltha.adapters.common.frameio.frameio import BpfProgramFilter, hexify
+from pyvoltha.common.utils.asleep import asleep
+from pyvoltha.common.utils.registry import registry
+from pyvoltha.adapters.iadapter import OltAdapter
+from pyvoltha.adapters.kafka.kafka_proxy import get_kafka_proxy
+from voltha_protos.ponsim_pb2_grpc import PonSimStub
+from voltha_protos.common_pb2 import OperStatus, ConnectStatus
+from voltha_protos.inter_container_pb2 import SwitchCapability, PortCapability, \
+    InterAdapterMessageType, InterAdapterResponseBody
+from voltha_protos.device_pb2 import Port, PmConfig, PmConfigs
+from voltha_protos.events_pb2 import KpiEvent, KpiEventType, MetricValuePairs
+from voltha_protos.logical_device_pb2 import LogicalPort
+from voltha_protos.openflow_13_pb2 import OFPPS_LIVE, OFPPF_FIBER, \
+    OFPPF_1GB_FD, \
+    OFPC_GROUP_STATS, OFPC_PORT_STATS, OFPC_TABLE_STATS, OFPC_FLOW_STATS, \
+    ofp_switch_features, ofp_desc
+from voltha_protos.openflow_13_pb2 import ofp_port
+from voltha_protos.ponsim_pb2 import FlowTable, PonSimFrame, PonSimMetricsRequest
+
+log = structlog.get_logger()
+
+PACKET_IN_VLAN = 4000
+is_inband_frame = BpfProgramFilter('(ether[14:2] & 0xfff) = 0x{:03x}'.format(
+    PACKET_IN_VLAN))
+
+
+def mac_str_to_tuple(mac):
+    return tuple(int(d, 16) for d in mac.split(':'))
+
+
+class AdapterPmMetrics:
+    def __init__(self, device):
+        self.pm_names = {'tx_64_pkts', 'tx_65_127_pkts', 'tx_128_255_pkts',
+                         'tx_256_511_pkts', 'tx_512_1023_pkts',
+                         'tx_1024_1518_pkts', 'tx_1519_9k_pkts',
+                         'rx_64_pkts', 'rx_65_127_pkts',
+                         'rx_128_255_pkts', 'rx_256_511_pkts',
+                         'rx_512_1023_pkts', 'rx_1024_1518_pkts',
+                         'rx_1519_9k_pkts'}
+        self.device = device
+        self.id = device.id
+        self.name = 'ponsim_olt'
+        self.default_freq = 150
+        self.grouped = False
+        self.freq_override = False
+        self.pon_metrics_config = dict()
+        self.nni_metrics_config = dict()
+        self.lc = None
+        for m in self.pm_names:
+            self.pon_metrics_config[m] = PmConfig(name=m,
+                                                  type=PmConfig.COUNTER,
+                                                  enabled=True)
+            self.nni_metrics_config[m] = PmConfig(name=m,
+                                                  type=PmConfig.COUNTER,
+                                                  enabled=True)
+
+    def update(self, pm_config):
+        if self.default_freq != pm_config.default_freq:
+            # Update the callback to the new frequency.
+            self.default_freq = pm_config.default_freq
+            self.lc.stop()
+            self.lc.start(interval=self.default_freq / 10)
+        for m in pm_config.metrics:
+            self.pon_metrics_config[m.name].enabled = m.enabled
+            self.nni_metrics_config[m.name].enabled = m.enabled
+
+    def make_proto(self):
+        pm_config = PmConfigs(
+            id=self.id,
+            default_freq=self.default_freq,
+            grouped=False,
+            freq_override=False)
+        for m in sorted(self.pon_metrics_config):
+            pm = self.pon_metrics_config[m]  # Either will do they're the same
+            pm_config.metrics.extend([PmConfig(name=pm.name,
+                                               type=pm.type,
+                                               enabled=pm.enabled)])
+        return pm_config
+
+    def collect_port_metrics(self, channel):
+        rtrn_port_metrics = dict()
+        stub = PonSimStub(channel)
+        stats = stub.GetStats(Empty())
+        rtrn_port_metrics['pon'] = self.extract_pon_metrics(stats)
+        rtrn_port_metrics['nni'] = self.extract_nni_metrics(stats)
+        return rtrn_port_metrics
+
+    def extract_pon_metrics(self, stats):
+        rtrn_pon_metrics = dict()
+        for m in stats.metrics:
+            if m.port_name == "pon":
+                for p in m.packets:
+                    if self.pon_metrics_config[p.name].enabled:
+                        rtrn_pon_metrics[p.name] = p.value
+                return rtrn_pon_metrics
+
+    def extract_nni_metrics(self, stats):
+        rtrn_pon_metrics = dict()
+        for m in stats.metrics:
+            if m.port_name == "nni":
+                for p in m.packets:
+                    if self.pon_metrics_config[p.name].enabled:
+                        rtrn_pon_metrics[p.name] = p.value
+                return rtrn_pon_metrics
+
+    def start_collector(self, callback):
+        log.info("starting-pm-collection", device_name=self.name,
+                 device_id=self.device.id)
+        prefix = 'voltha.{}.{}'.format(self.name, self.device.id)
+        self.lc = LoopingCall(callback, self.device.id, prefix)
+        self.lc.start(interval=self.default_freq / 10)
+
+    def stop_collector(self):
+        log.info("stopping-pm-collection", device_name=self.name,
+                 device_id=self.device.id)
+        self.lc.stop()
+
+
+class AdapterAlarms:
+    def __init__(self, adapter, device):
+        self.adapter = adapter
+        self.device = device
+        self.lc = None
+
+    # TODO: Implement code to send to kafka cluster directly instead of
+    # going through the voltha core.
+    def send_alarm(self, context_data, alarm_data):
+        log.debug("send-alarm-not-implemented")
+        return
+
+
+class PonSimOltAdapter(OltAdapter):
+    def __init__(self, core_proxy, adapter_proxy, config):
+        super(PonSimOltAdapter, self).__init__(core_proxy=core_proxy,
+                                               adapter_proxy=adapter_proxy,
+                                               config=config,
+                                               device_handler_class=PonSimOltHandler,
+                                               name='ponsim_olt',
+                                               vendor='Voltha project',
+                                               version='0.4',
+                                               device_type='ponsim_olt',
+                                               accepts_bulk_flow_update=True,
+                                               accepts_add_remove_flow_updates=False)
+
+    def update_pm_config(self, device, pm_config):
+        log.info("adapter-update-pm-config", device=device,
+                 pm_config=pm_config)
+        handler = self.devices_handlers[device.id]
+        handler.update_pm_config(device, pm_config)
+
+
+class PonSimOltHandler(object):
+    def __init__(self, adapter, device_id):
+        self.adapter = adapter
+        self.core_proxy = adapter.core_proxy
+        self.adapter_proxy = adapter.adapter_proxy
+        self.device_id = device_id
+        self.log = structlog.get_logger(device_id=device_id)
+        self.channel = None
+        self.io_port = None
+        self.logical_device_id = None
+        self.nni_port = None
+        self.ofp_port_no = None
+        self.interface = registry('main').get_args().interface
+        self.pm_metrics = None
+        self.alarms = None
+        self.frames = None
+
+    @inlineCallbacks
+    def get_channel(self):
+        if self.channel is None:
+            try:
+                device = yield self.core_proxy.get_device(self.device_id)
+                self.log.info('device-info', device=device,
+                              host_port=device.host_and_port)
+                self.channel = grpc.insecure_channel(device.host_and_port)
+            except Exception as e:
+                log.exception("ponsim-connection-failure", e=e)
+
+        # returnValue(self.channel)
+
+    def close_channel(self):
+        if self.channel is None:
+            self.log.info('grpc-channel-already-closed')
+            return
+        else:
+            if self.frames is not None:
+                self.frames.cancel()
+                self.frames = None
+                self.log.info('cancelled-grpc-frame-stream')
+
+            self.channel.unsubscribe(lambda *args: None)
+            self.channel = None
+
+            self.log.info('grpc-channel-closed')
+
+    @inlineCallbacks
+    def _get_nni_port(self):
+        ports = yield self.core_proxy.get_ports(self.device_id,
+                                                Port.ETHERNET_NNI)
+        returnValue(ports)
+
+    @inlineCallbacks
+    def activate(self, device):
+        try:
+            self.log.info('activating')
+
+            if not device.host_and_port:
+                device.oper_status = OperStatus.FAILED
+                device.reason = 'No host_and_port field provided'
+                self.core_proxy.device_update(device)
+                return
+
+            yield self.get_channel()
+            stub = PonSimStub(self.channel)
+            info = stub.GetDeviceInfo(Empty())
+            log.info('got-info', info=info, device_id=device.id)
+            self.ofp_port_no = info.nni_port
+
+            device.root = True
+            device.vendor = 'ponsim'
+            device.model = 'n/a'
+            device.serial_number = device.host_and_port
+            device.mac_address = "AA:BB:CC:DD:EE:FF"
+            yield self.core_proxy.device_update(device)
+
+            # Now set the initial PM configuration for this device
+            self.pm_metrics = AdapterPmMetrics(device)
+            pm_config = self.pm_metrics.make_proto()
+            log.info("initial-pm-config", pm_config=pm_config)
+            yield self.core_proxy.device_pm_config_update(pm_config, init=True)
+
+            # Setup alarm handler
+            self.alarms = AdapterAlarms(self.adapter, device)
+
+            nni_port = Port(
+                port_no=info.nni_port,
+                label='nni-'+ str(info.nni_port),
+                type=Port.ETHERNET_NNI,
+                oper_status=OperStatus.ACTIVE
+            )
+            self.nni_port = nni_port
+            yield self.core_proxy.port_created(device.id, nni_port)
+            yield self.core_proxy.port_created(device.id, Port(
+                port_no=1,
+                label='pon-1',
+                type=Port.PON_OLT,
+                oper_status=OperStatus.ACTIVE
+            ))
+
+            yield self.core_proxy.device_state_update(device.id,
+                                                      connect_status=ConnectStatus.REACHABLE,
+                                                      oper_status=OperStatus.ACTIVE)
+
+            # register ONUS
+            self.log.info('onu-found', onus=info.onus, len=len(info.onus))
+            for onu in info.onus:
+                vlan_id = onu.uni_port
+                yield self.core_proxy.child_device_detected(
+                    parent_device_id=device.id,
+                    parent_port_no=1,
+                    child_device_type='ponsim_onu',
+                    channel_id=vlan_id,
+                    serial_number=onu.serial_number,
+                )
+
+            self.log.info('starting-frame-grpc-stream')
+            reactor.callInThread(self.rcv_grpc)
+            self.log.info('started-frame-grpc-stream')
+
+            # Start collecting stats from the device after a brief pause
+            self.start_kpi_collection(device.id)
+        except Exception as e:
+            log.exception("Exception-activating", e=e)
+
+    def get_ofp_device_info(self, device):
+        return SwitchCapability(
+            desc=ofp_desc(
+                hw_desc='ponsim pon',
+                sw_desc='ponsim pon',
+                serial_num=device.serial_number,
+                mfr_desc="VOLTHA Project",
+                dp_desc='n/a'
+            ),
+            switch_features=ofp_switch_features(
+                n_buffers=256,  # TODO fake for now
+                n_tables=2,  # TODO ditto
+                capabilities=(  # TODO and ditto
+                        OFPC_FLOW_STATS
+                        | OFPC_TABLE_STATS
+                        | OFPC_PORT_STATS
+                        | OFPC_GROUP_STATS
+                )
+            )
+        )
+
+    def get_ofp_port_info(self, device, port_no):
+        # Since the adapter created the device port then it has the reference of the port to
+        # return the capability.   TODO:  Do a lookup on the NNI port number and return the
+        # appropriate attributes
+        self.log.info('get_ofp_port_info', port_no=port_no,
+                      info=self.ofp_port_no, device_id=device.id)
+        cap = OFPPF_1GB_FD | OFPPF_FIBER
+        return PortCapability(
+            port=LogicalPort(
+                ofp_port=ofp_port(
+                    hw_addr=mac_str_to_tuple(
+                        'AA:BB:CC:DD:EE:%02x' % port_no),
+                    config=0,
+                    state=OFPPS_LIVE,
+                    curr=cap,
+                    advertised=cap,
+                    peer=cap,
+                    curr_speed=OFPPF_1GB_FD,
+                    max_speed=OFPPF_1GB_FD
+                ),
+                device_id=device.id,
+                device_port_no=port_no
+            )
+        )
+
+    # TODO - change for core 2.0
+    def reconcile(self, device):
+        self.log.info('reconciling-OLT-device')
+
+    @inlineCallbacks
+    def _rcv_frame(self, frame):
+        pkt = Ether(frame)
+
+        if pkt.haslayer(Dot1Q):
+            outer_shim = pkt.getlayer(Dot1Q)
+
+            if isinstance(outer_shim.payload, Dot1Q):
+                inner_shim = outer_shim.payload
+                cvid = inner_shim.vlan
+                popped_frame = (
+                        Ether(src=pkt.src, dst=pkt.dst, type=inner_shim.type) /
+                        inner_shim.payload
+                )
+                self.log.info('sending-packet-in',device_id=self.device_id, port=cvid)
+                yield self.core_proxy.send_packet_in(device_id=self.device_id,
+                                               port=cvid,
+                                               packet=str(popped_frame))
+            elif pkt.haslayer(Raw):
+                raw_data = json.loads(pkt.getlayer(Raw).load)
+                self.alarms.send_alarm(self, raw_data)
+
+    @inlineCallbacks
+    def rcv_grpc(self):
+        """
+        This call establishes a GRPC stream to receive frames.
+        """
+        yield self.get_channel()
+        stub = PonSimStub(self.channel)
+
+        # Attempt to establish a grpc stream with the remote ponsim service
+        self.frames = stub.ReceiveFrames(Empty())
+
+        self.log.info('start-receiving-grpc-frames')
+
+        try:
+            for frame in self.frames:
+                self.log.info('received-grpc-frame',
+                              frame_len=len(frame.payload))
+                self._rcv_frame(frame.payload)
+
+        except _Rendezvous, e:
+            log.warn('grpc-connection-lost', message=e.message)
+
+        self.log.info('stopped-receiving-grpc-frames')
+
+    @inlineCallbacks
+    def update_flow_table(self, flows):
+        yield self.get_channel()
+        stub = PonSimStub(self.channel)
+
+        self.log.info('pushing-olt-flow-table')
+        stub.UpdateFlowTable(FlowTable(
+            port=0,
+            flows=flows
+        ))
+        self.log.info('success')
+
+    def remove_from_flow_table(self, flows):
+        self.log.debug('remove-from-flow-table', flows=flows)
+        # TODO: Update PONSIM code to accept incremental flow changes
+        # Once completed, the accepts_add_remove_flow_updates for this
+        # device type can be set to True
+
+    def add_to_flow_table(self, flows):
+        self.log.debug('add-to-flow-table', flows=flows)
+        # TODO: Update PONSIM code to accept incremental flow changes
+        # Once completed, the accepts_add_remove_flow_updates for this
+        # device type can be set to True
+
+    def update_pm_config(self, device, pm_config):
+        log.info("handler-update-pm-config", device=device,
+                 pm_config=pm_config)
+        self.pm_metrics.update(pm_config)
+
+    def send_proxied_message(self, proxy_address, msg):
+        self.log.info('sending-proxied-message')
+        if isinstance(msg, FlowTable):
+            stub = PonSimStub(self.get_channel())
+            self.log.info('pushing-onu-flow-table', port=msg.port)
+            res = stub.UpdateFlowTable(msg)
+            self.core_proxy.receive_proxied_message(proxy_address, res)
+
+    @inlineCallbacks
+    def process_inter_adapter_message(self, request):
+        self.log.info('process-inter-adapter-message', msg=request)
+        try:
+            if request.header.type == InterAdapterMessageType.FLOW_REQUEST:
+                f = FlowTable()
+                if request.body:
+                    request.body.Unpack(f)
+                    stub = PonSimStub(self.channel)
+                    self.log.info('pushing-onu-flow-table')
+                    res = stub.UpdateFlowTable(f)
+                    # Send response back
+                    reply = InterAdapterResponseBody()
+                    reply.status = True
+                    self.log.info('sending-response-back', reply=reply)
+                    yield self.adapter_proxy.send_inter_adapter_message(
+                        msg=reply,
+                        type=InterAdapterMessageType.FLOW_RESPONSE,
+                        from_adapter=self.adapter.name,
+                        to_adapter=request.header.from_topic,
+                        to_device_id=request.header.to_device_id,
+                        message_id=request.header.id
+                    )
+            elif request.header.type == InterAdapterMessageType.METRICS_REQUEST:
+                m = PonSimMetricsRequest()
+                if request.body:
+                    request.body.Unpack(m)
+                    stub = PonSimStub(self.channel)
+                    self.log.info('proxying onu stats request', port=m.port)
+                    res = stub.GetStats(m)
+                    # Send response back
+                    reply = InterAdapterResponseBody()
+                    reply.status = True
+                    reply.body.Pack(res)
+                    self.log.info('sending-response-back', reply=reply)
+                    yield self.adapter_proxy.send_inter_adapter_message(
+                        msg=reply,
+                        type=InterAdapterMessageType.METRICS_RESPONSE,
+                        from_adapter=self.adapter.name,
+                        to_adapter=request.header.from_topic,
+                        to_device_id=request.header.to_device_id,
+                        message_id=request.header.id
+                    )
+        except Exception as e:
+            self.log.exception("error-processing-inter-adapter-message", e=e)
+
+    def packet_out(self, egress_port, msg):
+        self.log.info('sending-packet-out', egress_port=egress_port,
+                      msg=hexify(msg))
+        try:
+            pkt = Ether(msg)
+            out_pkt = pkt
+            if egress_port != self.nni_port.port_no:
+                # don't do the vlan manipulation for the NNI port, vlans are already correct
+                out_pkt = (
+                        Ether(src=pkt.src, dst=pkt.dst) /
+                        Dot1Q(vlan=egress_port, type=pkt.type) /
+                        pkt.payload
+                )
+
+            # TODO need better way of mapping logical ports to PON ports
+            out_port = self.nni_port.port_no if egress_port == self.nni_port.port_no else 1
+
+            # send over grpc stream
+            stub = PonSimStub(self.channel)
+            frame = PonSimFrame(id=self.device_id, payload=str(out_pkt),
+                                out_port=out_port)
+            stub.SendFrame(frame)
+        except Exception as e:
+            self.log.exception("error-processing-packet-out", e=e)
+
+
+    @inlineCallbacks
+    def reboot(self):
+        self.log.info('rebooting', device_id=self.device_id)
+
+        yield self.core_proxy.device_state_update(self.device_id,
+                                                  connect_status=ConnectStatus.UNREACHABLE)
+
+        # Update the child devices connect state to UNREACHABLE
+        yield self.core_proxy.children_state_update(self.device_id,
+                                                    connect_status=ConnectStatus.UNREACHABLE)
+
+        # Sleep 10 secs, simulating a reboot
+        # TODO: send alert and clear alert after the reboot
+        yield asleep(10)
+
+        # Change the connection status back to REACHABLE.  With a
+        # real OLT the connection state must be the actual state
+        yield self.core_proxy.device_state_update(self.device_id,
+                                                  connect_status=ConnectStatus.REACHABLE)
+
+        # Update the child devices connect state to REACHABLE
+        yield self.core_proxy.children_state_update(self.device_id,
+                                                    connect_status=ConnectStatus.REACHABLE)
+
+        self.log.info('rebooted', device_id=self.device_id)
+
+    def self_test_device(self, device):
+        """
+        This is called to Self a device based on a NBI call.
+        :param device: A Voltha.Device object.
+        :return: Will return result of self test
+        """
+        log.info('self-test-device', device=device.id)
+        raise NotImplementedError()
+
+    @inlineCallbacks
+    def disable(self):
+        self.log.info('disabling', device_id=self.device_id)
+
+        self.stop_kpi_collection()
+
+        # Update the operational status to UNKNOWN and connection status to UNREACHABLE
+        yield self.core_proxy.device_state_update(self.device_id,
+                                                  oper_status=OperStatus.UNKNOWN,
+                                                  connect_status=ConnectStatus.UNREACHABLE)
+
+        self.close_channel()
+        self.log.info('disabled-grpc-channel')
+
+        self.stop_kpi_collection()
+
+        # TODO:
+        # 1) Remove all flows from the device
+        # 2) Remove the device from ponsim
+
+        self.log.info('disabled', device_id=self.device_id)
+
+    @inlineCallbacks
+    def reenable(self):
+        self.log.info('re-enabling', device_id=self.device_id)
+
+        # Set the ofp_port_no and nni_port in case we bypassed the reconcile
+        # process if the device was in DISABLED state on voltha restart
+        if not self.ofp_port_no and not self.nni_port:
+            yield self.get_channel()
+            stub = PonSimStub(self.channel)
+            info = stub.GetDeviceInfo(Empty())
+            log.info('got-info', info=info)
+            self.ofp_port_no = info.nni_port
+            ports = yield self._get_nni_port()
+            # For ponsim, we are using only 1 NNI port
+            if ports.items:
+                self.nni_port = ports.items[0]
+
+        # Update the state of the NNI port
+        yield self.core_proxy.port_state_update(self.device_id,
+                                                port_type=Port.ETHERNET_NNI,
+                                                port_no=self.ofp_port_no,
+                                                oper_status=OperStatus.ACTIVE)
+
+        # Update the state of the PON port
+        yield self.core_proxy.port_state_update(self.device_id,
+                                                port_type=Port.PON_OLT,
+                                                port_no=1,
+                                                oper_status=OperStatus.ACTIVE)
+
+        # Set the operational state of the device to ACTIVE and connect status to REACHABLE
+        yield self.core_proxy.device_state_update(self.device_id,
+                                                  connect_status=ConnectStatus.REACHABLE,
+                                                  oper_status=OperStatus.ACTIVE)
+
+        # TODO: establish frame grpc-stream
+        # yield reactor.callInThread(self.rcv_grpc)
+
+        self.start_kpi_collection(self.device_id)
+
+        self.log.info('re-enabled', device_id=self.device_id)
+
+    def delete(self):
+        self.log.info('deleting', device_id=self.device_id)
+
+        self.close_channel()
+        self.log.info('disabled-grpc-channel')
+
+        # TODO:
+        # 1) Remove all flows from the device
+        # 2) Remove the device from ponsim
+
+        self.log.info('deleted', device_id=self.device_id)
+
+    def start_kpi_collection(self, device_id):
+
+        kafka_cluster_proxy = get_kafka_proxy()
+
+        def _collect(device_id, prefix):
+
+            try:
+                # Step 1: gather metrics from device
+                port_metrics = \
+                    self.pm_metrics.collect_port_metrics(self.channel)
+
+                # Step 2: prepare the KpiEvent for submission
+                # we can time-stamp them here (or could use time derived from OLT
+                ts = arrow.utcnow().timestamp
+                kpi_event = KpiEvent(
+                    type=KpiEventType.slice,
+                    ts=ts,
+                    prefixes={
+                        # OLT NNI port
+                        prefix + '.nni': MetricValuePairs(
+                            metrics=port_metrics['nni']),
+                        # OLT PON port
+                        prefix + '.pon': MetricValuePairs(
+                            metrics=port_metrics['pon'])
+                    }
+                )
+
+                # Step 3: submit directly to the kafka bus
+                if kafka_cluster_proxy:
+                    if isinstance(kpi_event, Message):
+                        kpi_event = dumps(MessageToDict(kpi_event, True, True))
+                    kafka_cluster_proxy.send_message("voltha.kpis", kpi_event)
+
+            except Exception as e:
+                log.exception('failed-to-submit-kpis', e=e)
+
+        self.pm_metrics.start_collector(_collect)
+
+    def stop_kpi_collection(self):
+        self.pm_metrics.stop_collector()
diff --git a/ponsim_olt/ponsim_olt.yml b/ponsim_olt/ponsim_olt.yml
new file mode 100644
index 0000000..7c7fac3
--- /dev/null
+++ b/ponsim_olt/ponsim_olt.yml
@@ -0,0 +1,67 @@
+---
+# Copyright 2018 the original author or authors.
+#
+# 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.
+
+logging:
+    version: 1
+
+    formatters:
+      brief:
+        format: '%(message)s'
+      default:
+        format: '%(asctime)s.%(msecs)03d %(levelname)-8s %(threadName)s %(module)s.%(funcName)s %(message)s'
+        datefmt: '%Y%m%dT%H%M%S'
+
+    handlers:
+        console:
+            class : logging.StreamHandler
+            level: DEBUG
+            formatter: default
+            stream: ext://sys.stdout
+        localRotatingFile:
+            class: logging.handlers.RotatingFileHandler
+            filename: ponsim_olt.log
+            formatter: default
+            maxBytes: 2097152
+            backupCount: 10
+            level: DEBUG
+        null:
+            class: logging.NullHandler
+
+    loggers:
+        amqp:
+            handlers: [null]
+            propagate: False
+        conf:
+            propagate: False
+        '': # root logger
+            handlers: [console, localRotatingFile]
+            level: DEBUG # this can be bumped up/down by -q and -v command line
+                        # options
+            propagate: False
+
+
+kafka-cluster-proxy:
+    event_bus_publisher:
+        topic_mappings:
+            'model-change-events':
+                kafka_topic: 'voltha.events'
+                filters:     [null]
+            'alarms':
+                kafka_topic: 'voltha.alarms'
+                filters:     [null]
+            'kpis':
+                kafka_topic: 'voltha.kpis'
+                filters:     [null]
+
diff --git a/ponsim_olt/test_ponsim_olt.py b/ponsim_olt/test_ponsim_olt.py
new file mode 100644
index 0000000..f306cec
--- /dev/null
+++ b/ponsim_olt/test_ponsim_olt.py
@@ -0,0 +1,30 @@
+# Copyright 2017-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.
+
+import unittest
+import ponsim_olt
+
+
+class TestPonsimOlt (unittest.TestCase):
+    def test_mac_str_to_tuple(self):
+        result = ponsim_olt.mac_str_to_tuple("01:02:03:04:05:06")
+        self.assertEqual(result, (1, 2, 3, 4, 5, 6))
+
+
+def main():
+    unittest.main()
+
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..b82f310
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,63 @@
+argparse==1.2.1
+arrow==0.10.0
+bitstring==3.1.5
+cmd2==0.7.0
+colorama==0.3.9
+confluent-kafka==0.11.5
+cython==0.24.1
+decorator==4.1.2
+docker-py==1.10.6
+fluent-logger==0.6.0
+grpc==0.3.post19
+grpcio==1.16.0
+grpcio-tools==1.16.0
+hash_ring==1.3.1
+hexdump==3.3
+jinja2==2.8
+jsonpatch==1.16
+kafka_python==1.3.5
+kafkaloghandler==0.9.0
+klein==17.10.0
+kubernetes==5.0.0
+netaddr==0.7.19
+networkx==2.0
+netifaces==0.10.6
+pcapy==0.11.1
+pep8==1.7.1
+pep8-naming>=0.3.3
+protobuf==3.6.1
+protobuf-to-dict==0.1.0
+pyflakes==2.1.0
+pylint==1.9.4
+pyOpenSSL==17.3.0
+PyYAML==3.12
+requests==2.18.4
+scapy==2.3.3
+service-identity==17.0.0
+simplejson==3.12.0
+jsonschema==2.6.0
+six==1.12.0
+structlog==17.2.0
+termcolor==1.1.0
+transitions==0.6.4
+treq==17.8.0
+Twisted==18.7.0
+txaioetcd==0.3.0
+urllib3==1.22
+pyang==1.7.3
+lxml==3.6.4
+nosexcover==1.0.11
+zmq==0.0.0
+pyzmq==16.0.3
+txZMQ==0.8.0
+ncclient==0.5.3
+xmltodict==0.11.0
+dicttoxml==1.7.4
+etcd3==0.7.0
+pyparsing==2.2.0
+packaging==17.1
+pexpect==4.6.0
+python-consul==0.6.2
+afkak==3.0.0.dev20181106
+voltha-protos==1.0.0
+pyvoltha==0.2.2
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..f7f2ca1
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,35 @@
+; Copyright 2017 the original author or authors.
+;
+; 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.
+
+[tox]
+envlist = py27
+skipsdist = True
+
+[testenv]
+commands =
+    nosetests -c tox.ini
+
+deps =
+   nose
+   mock
+   coverage
+   -rrequirements.txt
+
+[nosetests]
+with-xunit=1
+xunit-file=nose-results.xml
+with-coverage=1
+cover-xml=1
+cover-xml-file=coverage.xml
+cover-package=pyvoltha