diff --git a/pipelines/fabric/src/main/java/org/onosproject/pipelines/fabric/FabricIntProgrammable.java b/pipelines/fabric/src/main/java/org/onosproject/pipelines/fabric/FabricIntProgrammable.java
new file mode 100644
index 0000000..a2bf569
--- /dev/null
+++ b/pipelines/fabric/src/main/java/org/onosproject/pipelines/fabric/FabricIntProgrammable.java
@@ -0,0 +1,487 @@
+/*
+ * 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.
+ */
+package org.onosproject.pipelines.fabric;
+
+import com.google.common.collect.Sets;
+import org.osgi.service.component.annotations.Reference;
+import org.osgi.service.component.annotations.ReferenceCardinality;
+
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.inbandtelemetry.api.IntConfig;
+import org.onosproject.inbandtelemetry.api.IntIntent;
+import org.onosproject.inbandtelemetry.api.IntObjective;
+import org.onosproject.inbandtelemetry.api.IntProgrammable;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.config.NetworkConfigService;
+import org.onosproject.net.flow.DefaultFlowRule;
+import org.onosproject.net.flow.DefaultTrafficSelector;
+import org.onosproject.net.flow.DefaultTrafficTreatment;
+import org.onosproject.net.flow.FlowRule;
+import org.onosproject.net.flow.FlowRuleService;
+import org.onosproject.net.flow.TableId;
+import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.flow.criteria.Criterion;
+import org.onosproject.net.flow.criteria.IPCriterion;
+import org.onosproject.net.flow.criteria.PiCriterion;
+import org.onosproject.net.flow.criteria.TcpPortCriterion;
+import org.onosproject.net.flow.criteria.UdpPortCriterion;
+import org.onosproject.net.pi.model.PiTableId;
+import org.onosproject.net.pi.runtime.PiAction;
+import org.onosproject.net.pi.runtime.PiActionParam;
+import org.onosproject.provider.general.device.api.GeneralProviderDeviceConfig;
+
+import java.util.Set;
+import java.util.stream.Collectors;
+import java.util.stream.StreamSupport;
+
+import static org.onlab.util.ImmutableByteSequence.copyFrom;
+
+/**
+ * Implementation of INT programmable behavior for fabric.p4. Currently supports
+ * only SOURCE and TRANSIT functionalities.
+ */
+public class FabricIntProgrammable extends AbstractFabricHandlerBehavior
+        implements IntProgrammable {
+
+    // TODO: change this value to the value of diameter of a network.
+    private static final int DEFAULT_PRIORITY = 10000;
+    private static final int MAXHOP = 64;
+    private static final int PORTMASK = 0xffff;
+    private static final int PKT_INSTANCE_TYPE_INGRESS_CLONE = 1;
+
+    private static final Set<Criterion.Type> SUPPORTED_CRITERION = Sets.newHashSet(
+            Criterion.Type.IPV4_DST, Criterion.Type.IPV4_SRC,
+            Criterion.Type.UDP_SRC, Criterion.Type.UDP_DST,
+            Criterion.Type.TCP_SRC, Criterion.Type.TCP_DST,
+            Criterion.Type.IP_PROTO);
+
+    private static final Set<PiTableId> TABLES_TO_CLEANUP = Sets.newHashSet(
+            FabricConstants.FABRIC_EGRESS_PROCESS_INT_MAIN_PROCESS_INT_TRANSIT_TB_INT_INSERT,
+            FabricConstants.FABRIC_INGRESS_PROCESS_SET_SOURCE_SINK_TB_SET_SOURCE,
+            FabricConstants.FABRIC_INGRESS_PROCESS_SET_SOURCE_SINK_TB_SET_SINK,
+            FabricConstants.FABRIC_EGRESS_PROCESS_INT_MAIN_PROCESS_INT_SOURCE_TB_INT_SOURCE,
+            FabricConstants.FABRIC_EGRESS_PROCESS_INT_MAIN_PROCESS_INT_REPORT_TB_GENERATE_REPORT
+    );
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY)
+    private FlowRuleService flowRuleService;
+
+    private CoreService coreService;
+    private NetworkConfigService cfgService;
+    private DeviceId deviceId;
+    private ApplicationId appId;
+
+    private boolean setupBehaviour() {
+        deviceId = this.data().deviceId();
+        flowRuleService = handler().get(FlowRuleService.class);
+        coreService = handler().get(CoreService.class);
+        cfgService = handler().get(NetworkConfigService.class);
+        appId = coreService.getAppId(PipeconfLoader.PIPELINE_APP_NAME);
+        if (appId == null) {
+            log.warn("Application ID is null. Cannot initialize behaviour.");
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    public boolean init() {
+
+        if (!setupBehaviour()) {
+            return false;
+        }
+
+        final GeneralProviderDeviceConfig cfg = cfgService.getConfig(
+                deviceId, GeneralProviderDeviceConfig.class);
+        if (cfg == null) {
+            log.warn("Missing GeneralProviderDevice config for {}", deviceId);
+            return false;
+        }
+        final String switchId = cfg.protocolsInfo().containsKey("int") ?
+                cfg.protocolsInfo().get("int").configValues().get("switchId")
+                : null;
+        if (switchId == null || switchId.isEmpty()) {
+            log.warn("Missing INT device config for {}", deviceId);
+            return false;
+        }
+
+        PiActionParam transitIdParam;
+        try {
+            transitIdParam = new PiActionParam(
+                    FabricConstants.SWITCH_ID,
+                    // FIXME set switch ID from netcfg
+                    copyFrom(Integer.parseInt(switchId)));
+        } catch (NumberFormatException e) {
+            log.warn("Invalid INT switch ID for {}: {}", deviceId, switchId);
+            return false;
+        }
+
+        PiAction transitAction = PiAction.builder()
+                .withId(FabricConstants.FABRIC_EGRESS_PROCESS_INT_MAIN_PROCESS_INT_TRANSIT_INIT_METADATA)
+                .withParameter(transitIdParam)
+                .build();
+        TrafficTreatment treatment = DefaultTrafficTreatment.builder()
+                .piTableAction(transitAction)
+                .build();
+        TrafficSelector selector = DefaultTrafficSelector.builder()
+                .matchPi(PiCriterion.builder().matchExact(
+                        FabricConstants.HDR_INT_IS_VALID, (byte) 0x01)
+                                 .build())
+                .build();
+
+        FlowRule transitFlowRule = DefaultFlowRule.builder()
+                .withSelector(selector)
+                .withTreatment(treatment)
+                .fromApp(appId)
+                .withPriority(DEFAULT_PRIORITY)
+                .makePermanent()
+                .forDevice(deviceId)
+                .forTable(FabricConstants.FABRIC_EGRESS_PROCESS_INT_MAIN_PROCESS_INT_TRANSIT_TB_INT_INSERT)
+                .build();
+
+        flowRuleService.applyFlowRules(transitFlowRule);
+        return true;
+    }
+
+    @Override
+    public boolean setSourcePort(PortNumber port) {
+
+        if (!setupBehaviour()) {
+            return false;
+        }
+
+        PiCriterion ingressCriterion = PiCriterion.builder()
+                .matchExact(FabricConstants.HDR_IG_PORT, port.toLong())
+                .build();
+        TrafficSelector srcSelector = DefaultTrafficSelector.builder()
+                .matchPi(ingressCriterion)
+                .build();
+        PiAction setSourceAct = PiAction.builder()
+                .withId(FabricConstants.FABRIC_INGRESS_PROCESS_SET_SOURCE_SINK_INT_SET_SOURCE)
+                .build();
+        TrafficTreatment srcTreatment = DefaultTrafficTreatment.builder()
+                .piTableAction(setSourceAct)
+                .build();
+        FlowRule srcFlowRule = DefaultFlowRule.builder()
+                .withSelector(srcSelector)
+                .withTreatment(srcTreatment)
+                .fromApp(appId)
+                .withPriority(DEFAULT_PRIORITY)
+                .makePermanent()
+                .forDevice(deviceId)
+                .forTable(FabricConstants.FABRIC_INGRESS_PROCESS_SET_SOURCE_SINK_TB_SET_SOURCE)
+                .build();
+        flowRuleService.applyFlowRules(srcFlowRule);
+        return true;
+    }
+
+    @Override
+    public boolean setSinkPort(PortNumber port) {
+
+        if (!setupBehaviour()) {
+            return false;
+        }
+
+        PiCriterion egressCriterion = PiCriterion.builder()
+                .matchExact(FabricConstants.HDR_EG_PORT, port.toLong())
+                .build();
+        TrafficSelector sinkSelector = DefaultTrafficSelector.builder()
+                .matchPi(egressCriterion)
+                .build();
+        PiAction setSinkAct = PiAction.builder()
+                .withId(FabricConstants.FABRIC_INGRESS_PROCESS_SET_SOURCE_SINK_INT_SET_SINK)
+                .build();
+        TrafficTreatment sinkTreatment = DefaultTrafficTreatment.builder()
+                .piTableAction(setSinkAct)
+                .build();
+        FlowRule sinkFlowRule = DefaultFlowRule.builder()
+                .withSelector(sinkSelector)
+                .withTreatment(sinkTreatment)
+                .fromApp(appId)
+                .withPriority(DEFAULT_PRIORITY)
+                .makePermanent()
+                .forDevice(deviceId)
+                .forTable(FabricConstants.FABRIC_INGRESS_PROCESS_SET_SOURCE_SINK_TB_SET_SINK)
+                .build();
+        flowRuleService.applyFlowRules(sinkFlowRule);
+        return true;
+    }
+
+    @Override
+    public boolean addIntObjective(IntObjective obj) {
+
+        if (!setupBehaviour()) {
+            return false;
+        }
+
+        return processIntObjective(obj, true);
+    }
+
+    @Override
+    public boolean removeIntObjective(IntObjective obj) {
+
+        if (!setupBehaviour()) {
+            return false;
+        }
+
+        return processIntObjective(obj, false);
+    }
+
+    @Override
+    public boolean setupIntConfig(IntConfig config) {
+
+        if (!setupBehaviour()) {
+            return false;
+        }
+
+        return setupIntReportInternal(config);
+    }
+
+    @Override
+    public void cleanup() {
+
+        if (!setupBehaviour()) {
+            return;
+        }
+
+        StreamSupport.stream(flowRuleService.getFlowEntries(
+                data().deviceId()).spliterator(), false)
+                .filter(f -> f.table().type() == TableId.Type.PIPELINE_INDEPENDENT)
+                .filter(f -> TABLES_TO_CLEANUP.contains((PiTableId) f.table()))
+                .forEach(flowRuleService::removeFlowRules);
+    }
+
+    @Override
+    public boolean supportsFunctionality(IntFunctionality functionality) {
+        // Sink not fully supported yet.
+        return functionality == IntFunctionality.SOURCE || functionality == IntFunctionality.TRANSIT;
+    }
+
+    private FlowRule buildWatchlistEntry(IntObjective obj) {
+        int instructionBitmap = buildInstructionBitmap(obj.metadataTypes());
+        PiActionParam maxHopParam = new PiActionParam(
+                FabricConstants.MAX_HOP,
+                copyFrom(MAXHOP));
+        PiActionParam instCntParam = new PiActionParam(
+                FabricConstants.INS_CNT,
+                copyFrom(Integer.bitCount(instructionBitmap)));
+        PiActionParam inst0003Param = new PiActionParam(
+                FabricConstants.INS_MASK0003,
+                copyFrom((instructionBitmap >> 12) & 0xF));
+        PiActionParam inst0407Param = new PiActionParam(
+                FabricConstants.INS_MASK0407,
+                copyFrom((instructionBitmap >> 8) & 0xF));
+
+        PiAction intSourceAction = PiAction.builder()
+                .withId(FabricConstants.FABRIC_EGRESS_PROCESS_INT_MAIN_PROCESS_INT_SOURCE_INT_SOURCE_DSCP)
+                .withParameter(maxHopParam)
+                .withParameter(instCntParam)
+                .withParameter(inst0003Param)
+                .withParameter(inst0407Param)
+                .build();
+
+        TrafficTreatment instTreatment = DefaultTrafficTreatment.builder()
+                .piTableAction(intSourceAction)
+                .build();
+
+        TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
+        for (Criterion criterion : obj.selector().criteria()) {
+            switch (criterion.type()) {
+                case IPV4_SRC:
+                    sBuilder.matchIPSrc(((IPCriterion) criterion).ip());
+                    break;
+                case IPV4_DST:
+                    sBuilder.matchIPDst(((IPCriterion) criterion).ip());
+                    break;
+                case TCP_SRC:
+                    sBuilder.matchPi(
+                            PiCriterion.builder().matchTernary(
+                                    FabricConstants.HDR_L4_SPORT,
+                                    ((TcpPortCriterion) criterion).tcpPort().toInt(), PORTMASK)
+                                    .build());
+                    break;
+                case UDP_SRC:
+                    sBuilder.matchPi(
+                            PiCriterion.builder().matchTernary(
+                                    FabricConstants.HDR_L4_SPORT,
+                                    ((UdpPortCriterion) criterion).udpPort().toInt(), PORTMASK)
+                                    .build());
+                    break;
+                case TCP_DST:
+                    sBuilder.matchPi(
+                            PiCriterion.builder().matchTernary(
+                                    FabricConstants.HDR_L4_DPORT,
+                                    ((TcpPortCriterion) criterion).tcpPort().toInt(), PORTMASK)
+                                    .build());
+                    break;
+                case UDP_DST:
+                    sBuilder.matchPi(
+                            PiCriterion.builder().matchTernary(
+                                    FabricConstants.HDR_L4_DPORT,
+                                    ((UdpPortCriterion) criterion).udpPort().toInt(), PORTMASK)
+                                    .build());
+                    break;
+                default:
+                    log.warn("Unsupported criterion type: {}", criterion.type());
+            }
+        }
+
+        return DefaultFlowRule.builder()
+                .forDevice(deviceId)
+                .withSelector(sBuilder.build())
+                .withTreatment(instTreatment)
+                .withPriority(DEFAULT_PRIORITY)
+                .forTable(FabricConstants.FABRIC_EGRESS_PROCESS_INT_MAIN_PROCESS_INT_SOURCE_TB_INT_SOURCE)
+                .fromApp(appId)
+                .makePermanent()
+                .build();
+    }
+
+    private int buildInstructionBitmap(Set<IntIntent.IntMetadataType> metadataTypes) {
+        int instBitmap = 0;
+        for (IntIntent.IntMetadataType metadataType : metadataTypes) {
+            switch (metadataType) {
+                case SWITCH_ID:
+                    instBitmap |= (1 << 15);
+                    break;
+                case L1_PORT_ID:
+                    instBitmap |= (1 << 14);
+                    break;
+                case HOP_LATENCY:
+                    instBitmap |= (1 << 13);
+                    break;
+                case QUEUE_OCCUPANCY:
+                    instBitmap |= (1 << 12);
+                    break;
+                case INGRESS_TIMESTAMP:
+                    instBitmap |= (1 << 11);
+                    break;
+                case EGRESS_TIMESTAMP:
+                    instBitmap |= (1 << 10);
+                    break;
+                case L2_PORT_ID:
+                    instBitmap |= (1 << 9);
+                    break;
+                case EGRESS_TX_UTIL:
+                    instBitmap |= (1 << 8);
+                    break;
+                default:
+                    log.info("Unsupported metadata type {}. Ignoring...", metadataType);
+                    break;
+            }
+        }
+        return instBitmap;
+    }
+
+    /**
+     * Returns a subset of Criterion from given selector, which is unsupported
+     * by this INT pipeline.
+     *
+     * @param selector a traffic selector
+     * @return a subset of Criterion from given selector, unsupported by this
+     * INT pipeline, empty if all criteria are supported.
+     */
+    private Set<Criterion> unsupportedSelectors(TrafficSelector selector) {
+        return selector.criteria().stream()
+                .filter(criterion -> !SUPPORTED_CRITERION.contains(criterion.type()))
+                .collect(Collectors.toSet());
+    }
+
+    private boolean processIntObjective(IntObjective obj, boolean install) {
+        if (install && !unsupportedSelectors(obj.selector()).isEmpty()) {
+            log.warn("Criteria {} not supported by {} for INT watchlist",
+                     unsupportedSelectors(obj.selector()), deviceId);
+            return false;
+        }
+
+        FlowRule flowRule = buildWatchlistEntry(obj);
+        if (flowRule != null) {
+            if (install) {
+                flowRuleService.applyFlowRules(flowRule);
+            } else {
+                flowRuleService.removeFlowRules(flowRule);
+            }
+            log.debug("IntObjective {} has been {} {}",
+                      obj, install ? "installed to" : "removed from", deviceId);
+            return true;
+        } else {
+            log.warn("Failed to {} IntObjective {} on {}",
+                     install ? "install" : "remove", obj, deviceId);
+            return false;
+        }
+    }
+
+    private boolean setupIntReportInternal(IntConfig cfg) {
+        // Report not fully supported yet.
+        return true;
+        // FlowRule reportRule = buildReportEntry(cfg, PKT_INSTANCE_TYPE_INGRESS_CLONE);
+        // if (reportRule != null) {
+        //     flowRuleService.applyFlowRules(reportRule);
+        //     log.info("Report entry {} has been added to {}", reportRule, this.data().deviceId());
+        //     return true;
+        // } else {
+        //     log.warn("Failed to add report entry on {}", this.data().deviceId());
+        //     return false;
+        // }
+    }
+
+    private FlowRule buildReportEntry(IntConfig cfg, int type) {
+
+        if (!setupBehaviour()) {
+            return null;
+        }
+
+        PiActionParam srcMacParam = new PiActionParam(
+                FabricConstants.SRC_MAC,
+                copyFrom(cfg.sinkMac().toBytes()));
+        PiActionParam nextHopMacParam = new PiActionParam(
+                FabricConstants.MON_MAC,
+                copyFrom(cfg.collectorNextHopMac().toBytes()));
+        PiActionParam srcIpParam = new PiActionParam(
+                FabricConstants.SRC_IP,
+                copyFrom(cfg.sinkIp().toOctets()));
+        PiActionParam monIpParam = new PiActionParam(
+                FabricConstants.MON_IP,
+                copyFrom(cfg.collectorIp().toOctets()));
+        PiActionParam monPortParam = new PiActionParam(
+                FabricConstants.MON_PORT,
+                copyFrom(cfg.collectorPort().toInt()));
+        PiAction reportAction = PiAction.builder()
+                .withId(FabricConstants.FABRIC_EGRESS_PROCESS_INT_MAIN_PROCESS_INT_REPORT_DO_REPORT_ENCAPSULATION)
+                .withParameter(srcMacParam)
+                .withParameter(nextHopMacParam)
+                .withParameter(srcIpParam)
+                .withParameter(monIpParam)
+                .withParameter(monPortParam)
+                .build();
+        TrafficTreatment treatment = DefaultTrafficTreatment.builder()
+                .piTableAction(reportAction)
+                .build();
+
+        return DefaultFlowRule.builder()
+                .withTreatment(treatment)
+                .fromApp(appId)
+                .withPriority(DEFAULT_PRIORITY)
+                .makePermanent()
+                .forDevice(this.data().deviceId())
+                .forTable(FabricConstants.FABRIC_EGRESS_PROCESS_INT_MAIN_PROCESS_INT_REPORT_TB_GENERATE_REPORT)
+                .build();
+    }
+
+}