1. Edit conf/onos.properties

    floodlight.modules = net.floodlightcontroller.core.FloodlightProvider,\
    net.floodlightcontroller.threadpool.ThreadPool,\
    net.onrc.onos.core.topology.TopologyPublisher, \
    net.onrc.onos.core.datagrid.HazelcastDatagrid,\
    net.onrc.onos.core.flowprogrammer.FlowProgrammer,\
    net.onrc.onos.core.intent.runtime.PathCalcRuntimeModule,\
    net.onrc.onos.core.intent.runtime.PlanInstallModule,\
    net.onrc.onos.core.registry.ZookeeperRegistry, \
    net.onrc.onos.core.metrics.OnosMetricsModule, \
    net.onrc.onos.apps.websocket.WebSocketModule, \
    net.onrc.onos.core.main.config.DefaultConfiguration, \
    net.onrc.onos.apps.segmentrouting.SegmentRoutingManager
    net.floodlightcontroller.restserver.RestApiServer.port = 8080
    net.floodlightcontroller.core.FloodlightProvider.openflowport = 6633
    net.floodlightcontroller.core.FloodlightProvider.workerthreads = 16
    net.floodlightcontroller.core.FloodlightProvider.cpqdUsePipeline13 = true
    net.floodlightcontroller.forwarding.Forwarding.idletimeout = 5
    net.floodlightcontroller.forwarding.Forwarding.hardtimeout = 0
    net.onrc.onos.apps.websocket.WebSocketModule.port = 8081
    net.floodlightcontroller.core.FloodlightProvider.cpqdUsePipeline13 = true
    # NOTE: Do NOT modify or remove the line below. This value will be overwritten by onos.sh script.
    net.onrc.onos.core.datagrid.HazelcastDatagrid.datagridConfig = 
    # Uncomment and list all the ZooKeeper instances after localhost on multi-instance deployment.
    #net.onrc.onos.core.registry.ZookeeperRegistry.connectionString = localhost:2181,otherhost:2181
    # Specify a network configuration file to be used by the NetworkConfigManager
    net.onrc.onos.core.configmanager.NetworkConfigManager.networkConfigFile = conf/sr-3node.conf



  2. Edit network configuration file

    {
      "comment": " Segment routing topology description and configuration",
      "restrictSwitches": true,
      "restrictLinks": true,
      "switchConfig":
                 [
                   { "nodeDpid": "00:01", "name": "Dallas-R1", "type": "Router_SR", "allowed": true,
                     "latitude": 80.80, "longitude": 90.10,
                     "params": { "routerIp": "192.168.0.1/32",
                                 "routerMac": "00:00:01:01:01:80",
                                 "nodeSid": 101,
                                 "isEdgeRouter" : true,
                                 "subnets": [
                                             { "portNo": 1, "subnetIp": "10.0.1.128/24" },
                        					 { "portNo": 2, "subnetIp": "10.0.1.128/24" },
    					                     { "portNo": 3, "subnetIp": "10.0.1.128/24" },
                                             { "portNo": 4, "subnetIp": "10.0.2.128/24" },
                                             { "portNo": 5, "subnetIp": "10.0.3.128/24" }
                                             ]
                                 }
                     },
                   { "nodeDpid": "00:02", "name": "Dallas-R2", "type": "Router_SR", "allowed": true,
                     "latitude": 80.80, "longitude": 90.10,
                     "params": { "routerIp": "192.168.0.2/32",
                                 "routerMac": "00:00:02:02:02:80",
                                 "nodeSid": 102,
                                 "isEdgeRouter" : false
                                 }
                     },
                   { "nodeDpid": "00:03", "name": "Dallas-R3", "type": "Router_SR", "allowed": true,
                     "latitude": 80.80, "longitude": 90.10,
                     "params": { "routerIp": "192.168.0.3/32",
                                 "routerMac": "00:00:07:07:07:80",
                                 "nodeSid": 103,
                                 "isEdgeRouter" : true,
                                 "subnets": [
                                             { "portNo": 1, "subnetIp": "7.7.7.128/24" }
                                             ]
                                 }
                     }
                   ],
      "linkConfig":[
                    { "type": "pktLink", "allowed": true,
                      "nodeDpid1": "01", "nodeDpid2": "02",
                      "params": { "port1": 6, "port2": 1 }
                      },
                   { "type": "pktLink", "allowed": true,
                      "nodeDpid1": "01", "nodeDpid2": "02",
                      "params": { "port1": 7, "port2": 3 }
                      },
                    { "type": "pktLink", "allowed": true,
                      "nodeDpid1": "02", "nodeDpid2": "03",
                      "params": { "port1": 2, "port2": 2 }
                      }
                    ]
    }