Esempio n. 1
0
def of_demo_26():
    f = "cfg.yml"
    d = {}
    if (load_dict_from_file(f, d) is False):
        print("Config file '%s' read error: " % f)
        exit()

    try:
        ctrlIpAddr = d['ctrlIpAddr']
        ctrlPortNum = d['ctrlPortNum']
        ctrlUname = d['ctrlUname']
        ctrlPswd = d['ctrlPswd']
        nodeName = d['nodeName']
        rundelay = d['rundelay']
    except:
        print("Failed to get Controller device attributes")
        exit(0)

    print("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<")
    print("<<< Demo 26 Start")
    print("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<")

    ctrl = Controller(ctrlIpAddr, ctrlPortNum, ctrlUname, ctrlPswd)
    ofswitch = OFSwitch(ctrl, nodeName)

    print("<<< 'Controller': %s, 'OpenFlow' switch: '%s'" %
          (ctrlIpAddr, nodeName))

    flow_table_id = 0
    flow_id_base = 12
    flow_id = flow_id_base
    flowEntries = []

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(6001)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_idle_timeout(12000)
    flow_entry.set_flow_hard_timeout(12000)
    flow_entry.set_flow_priority(1000)

    instruction = Instruction(instruction_order=0)
    action = DropAction(order=0)
    instruction.add_apply_action(action)
    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_eth_type(ETH_TYPE_ARP)
    match.set_eth_src("00:11:22:33:44:55")
    match.set_eth_dst("aa:bb:cc:dd:ee:ff")
    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(7001)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_idle_timeout(2400)
    flow_entry.set_flow_hard_timeout(2400)
    flow_entry.set_flow_priority(2000)

    instruction = Instruction(instruction_order=0)
    action = OutputAction(order=0, port="CONTROLLER", max_len=60)
    instruction.add_apply_action(action)
    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_eth_type(ETH_TYPE_IPv4)
    match.set_ipv4_src("1.2.3.4/32")
    match.set_ipv4_dst("192.168.1.11/32")
    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(800)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_hard_timeout(1800)
    flow_entry.set_flow_idle_timeout(1800)
    flow_entry.set_flow_priority(3000)

    instruction = Instruction(instruction_order=0)
    action = OutputAction(order=0, port=5)
    instruction.add_apply_action(action)
    action = OutputAction(order=1, port=6)
    instruction.add_apply_action(action)
    action = OutputAction(order=2, port=7)
    instruction.add_apply_action(action)

    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_in_port(1)

    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(1234)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_hard_timeout(0)
    flow_entry.set_flow_idle_timeout(0)
    flow_entry.set_flow_priority(4000)

    instruction = Instruction(instruction_order=0)

    action = PushVlanHeaderAction(order=0)
    action.set_eth_type(ETH_TYPE_QINQ)
    instruction.add_apply_action(action)

    action = SetFieldAction(order=1)
    action.set_vlan_id(100)
    instruction.add_apply_action(action)

    action = PushVlanHeaderAction(order=2)
    action.set_eth_type(ETH_TYPE_DOT1Q)
    instruction.add_apply_action(action)

    action = SetFieldAction(order=3)
    action.set_vlan_id(998)
    instruction.add_apply_action(action)

    action = OutputAction(order=4, port=111)
    instruction.add_apply_action(action)

    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_eth_type(ETH_TYPE_ARP)
    match.set_vlan_id(998)
    match.set_in_port(in_port=110)

    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(1234)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_hard_timeout(0)
    flow_entry.set_flow_idle_timeout(0)
    flow_entry.set_flow_priority(4000)

    instruction = Instruction(instruction_order=0)

    action = PushVlanHeaderAction(order=0)
    action.set_eth_type(ETH_TYPE_QINQ)
    instruction.add_apply_action(action)

    action = SetFieldAction(order=1)
    action.set_vlan_id(100)
    instruction.add_apply_action(action)

    action = PushVlanHeaderAction(order=2)
    action.set_eth_type(ETH_TYPE_DOT1Q)
    instruction.add_apply_action(action)

    action = SetFieldAction(order=3)
    action.set_vlan_id(998)
    instruction.add_apply_action(action)

    action = OutputAction(order=4, port=111)
    instruction.add_apply_action(action)

    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_eth_type(ETH_TYPE_IPv4)
    match.set_vlan_id(998)
    match.set_in_port(in_port=110)

    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(1234)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_hard_timeout(0)
    flow_entry.set_flow_idle_timeout(0)
    flow_entry.set_flow_priority(4000)

    instruction = Instruction(instruction_order=0)

    action = PopVlanHeaderAction(order=0)
    instruction.add_apply_action(action)

    action = OutputAction(order=1, port=110)
    instruction.add_apply_action(action)

    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_eth_type(ETH_TYPE_ARP)
    match.set_vlan_id(100)
    match.set_in_port(111)

    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(1234)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_hard_timeout(0)
    flow_entry.set_flow_idle_timeout(0)
    flow_entry.set_flow_priority(4000)

    instruction = Instruction(instruction_order=0)

    action = PopVlanHeaderAction(order=0)
    instruction.add_apply_action(action)

    action = OutputAction(order=1, port=110)
    instruction.add_apply_action(action)

    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_eth_type(ETH_TYPE_IPv4)
    match.set_vlan_id(100)
    match.set_in_port(111)

    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    print("\n")
    print("<<< Remove configured flows from the Controller")
    ofswitch.delete_flows(flow_table_id)

    print("\n")
    print("<<< Set OpenFlow flows on the Controller")

    print("\n")
    print("<<< Flows to be configured:")

    flowEntries = sorted(flowEntries, key=lambda fe: fe.get_flow_priority())
    for fe in flowEntries:
        print(" %s" % fe.to_ofp_oxm_syntax())

    time.sleep(rundelay)
    success = True
    for fe in flowEntries:
        result = ofswitch.add_modify_flow(fe)
        status = result.get_status()
        if (status.eq(STATUS.OK)):
            pass
        else:
            success = False
            print("\n")
            print("!!!Demo terminated, failed to add flow:\n '%s'" %
                  fe.to_ofp_oxm_syntax())
            print(" Failure reason: %s" % status.detailed())

    if success:
        print "\n"
        print("<<< Flows successfully added to the Controller")
    else:
        print "\n"
        print("<<< Removing all flows from the Controller")
        ofswitch.delete_flows(flow_table_id)
        exit(0)

    print("\n")
    print("<<< Get configured flows from the Controller")
    time.sleep(rundelay)

    print("\n")
    print("<<< Configured flows:")
    result = ofswitch.get_configured_FlowEntries(flow_table_id=0)
    status = result.get_status()
    if (status.eq(STATUS.OK)):
        data = result.get_data()
        flowEntries = sorted(data, key=lambda fe: fe.get_flow_priority())
        for fe in flowEntries:
            print " %s" % fe.to_ofp_oxm_syntax()
    else:
        print("\n")
        print("!!!Demo terminated, reason: %s" % status.brief().lower())
        exit(0)

    print("\n")
    print("<<< Get configured flows by IDs from the Controller:")
    time.sleep(rundelay)
    for i in range(flow_id_base, flow_id):
        result = ofswitch.get_configured_FlowEntry(flow_table_id, i)
        status = result.get_status()
        if (status.eq(STATUS.OK)):
            print(" -- Flow id '%s'" % i)
            fe = result.get_data()
            print " %s" % fe.to_ofp_oxm_syntax()
        else:
            print("\n")
            print("!!!Demo terminated, reason: %s" % status.brief().lower())
            print("<<< Removing all flows from the Controller")
            ofswitch.delete_flows(flow_table_id)
            exit(0)

    time.sleep(rundelay)

    print("\n")
    print("<<< Remove configured flows from the Controller")
    ofswitch.delete_flows(flow_table_id)

    time.sleep(rundelay)

    print("\n")
    print("<<< Get configured flows from the Controller")
    result = ofswitch.get_configured_FlowEntries(flow_table_id=0)
    status = result.get_status()
    if (status.eq(STATUS.DATA_NOT_FOUND)):
        print("\n")
        print "<<< No configured flows"
    else:
        print("\n")
        print("!!!Demo terminated, reason: %s" % status.detailed())
        exit(0)

    print("\n")
    print(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>")
    print(">>> Demo End")
    print(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>")
Esempio n. 2
0
 flow_id_base = 12
 flow_id = flow_id_base
 flowEntries = []
 
 # Sample flow entry
 flow_entry = FlowEntry()
 flow_entry.set_flow_cookie(6001)
 flow_entry.set_flow_table_id(flow_table_id)
 flow_entry.set_flow_id(flow_id)
 flow_id += 1
 flow_entry.set_flow_idle_timeout(12000)
 flow_entry.set_flow_hard_timeout(12000)
 flow_entry.set_flow_priority(1000)
 
 instruction = Instruction(instruction_order = 0)
 action = DropAction(order = 0)
 instruction.add_apply_action(action)
 flow_entry.add_instruction(instruction)
 
 match = Match()
 match.set_eth_type(ETH_TYPE_ARP)
 match.set_eth_src("00:11:22:33:44:55")
 match.set_eth_dst("aa:bb:cc:dd:ee:ff")
 flow_entry.add_match(match)
 
 flowEntries.append(flow_entry)
 
 # Sample flow entry
 flow_entry = FlowEntry()
 flow_entry.set_flow_cookie(7001)
 flow_entry.set_flow_table_id(flow_table_id)
Esempio n. 3
0
def of_demo_26():
    f = "cfg.yml"
    d = {}
    if(load_dict_from_file(f, d) is False):
        print("Config file '%s' read error: " % f)
        exit()

    try:
        ctrlIpAddr = d['ctrlIpAddr']
        ctrlPortNum = d['ctrlPortNum']
        ctrlUname = d['ctrlUname']
        ctrlPswd = d['ctrlPswd']
        nodeName = d['nodeName']
        rundelay = d['rundelay']
    except:
        print ("Failed to get Controller device attributes")
        exit(0)

    print ("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<")
    print ("<<< Demo 26 Start")
    print ("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<")

    ctrl = Controller(ctrlIpAddr, ctrlPortNum, ctrlUname, ctrlPswd)
    ofswitch = OFSwitch(ctrl, nodeName)

    print ("<<< 'Controller': %s, 'OpenFlow' switch: '%s'" %
           (ctrlIpAddr, nodeName))

    flow_table_id = 0
    flow_id_base = 12
    flow_id = flow_id_base
    flowEntries = []

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(6001)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_idle_timeout(12000)
    flow_entry.set_flow_hard_timeout(12000)
    flow_entry.set_flow_priority(1000)

    instruction = Instruction(instruction_order=0)
    action = DropAction(order=0)
    instruction.add_apply_action(action)
    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_eth_type(ETH_TYPE_ARP)
    match.set_eth_src("00:11:22:33:44:55")
    match.set_eth_dst("aa:bb:cc:dd:ee:ff")
    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(7001)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_idle_timeout(2400)
    flow_entry.set_flow_hard_timeout(2400)
    flow_entry.set_flow_priority(2000)

    instruction = Instruction(instruction_order=0)
    action = OutputAction(order=0, port="CONTROLLER", max_len=60)
    instruction.add_apply_action(action)
    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_eth_type(ETH_TYPE_IPv4)
    match.set_ipv4_src("1.2.3.4/32")
    match.set_ipv4_dst("192.168.1.11/32")
    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(800)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_hard_timeout(1800)
    flow_entry.set_flow_idle_timeout(1800)
    flow_entry.set_flow_priority(3000)

    instruction = Instruction(instruction_order=0)
    action = OutputAction(order=0, port=5)
    instruction.add_apply_action(action)
    action = OutputAction(order=1, port=6)
    instruction.add_apply_action(action)
    action = OutputAction(order=2, port=7)
    instruction.add_apply_action(action)

    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_in_port(1)

    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(1234)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_hard_timeout(0)
    flow_entry.set_flow_idle_timeout(0)
    flow_entry.set_flow_priority(4000)

    instruction = Instruction(instruction_order=0)

    action = PushVlanHeaderAction(order=0)
    action.set_eth_type(ETH_TYPE_QINQ)
    instruction.add_apply_action(action)

    action = SetFieldAction(order=1)
    action.set_vlan_id(100)
    instruction.add_apply_action(action)

    action = PushVlanHeaderAction(order=2)
    action.set_eth_type(ETH_TYPE_DOT1Q)
    instruction.add_apply_action(action)

    action = SetFieldAction(order=3)
    action.set_vlan_id(998)
    instruction.add_apply_action(action)

    action = OutputAction(order=4, port=111)
    instruction.add_apply_action(action)

    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_eth_type(ETH_TYPE_ARP)
    match.set_vlan_id(998)
    match.set_in_port(in_port=110)

    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(1234)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_hard_timeout(0)
    flow_entry.set_flow_idle_timeout(0)
    flow_entry.set_flow_priority(4000)

    instruction = Instruction(instruction_order=0)

    action = PushVlanHeaderAction(order=0)
    action.set_eth_type(ETH_TYPE_QINQ)
    instruction.add_apply_action(action)

    action = SetFieldAction(order=1)
    action.set_vlan_id(100)
    instruction.add_apply_action(action)

    action = PushVlanHeaderAction(order=2)
    action.set_eth_type(ETH_TYPE_DOT1Q)
    instruction.add_apply_action(action)

    action = SetFieldAction(order=3)
    action.set_vlan_id(998)
    instruction.add_apply_action(action)

    action = OutputAction(order=4, port=111)
    instruction.add_apply_action(action)

    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_eth_type(ETH_TYPE_IPv4)
    match.set_vlan_id(998)
    match.set_in_port(in_port=110)

    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(1234)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_hard_timeout(0)
    flow_entry.set_flow_idle_timeout(0)
    flow_entry.set_flow_priority(4000)

    instruction = Instruction(instruction_order=0)

    action = PopVlanHeaderAction(order=0)
    instruction.add_apply_action(action)

    action = OutputAction(order=1, port=110)
    instruction.add_apply_action(action)

    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_eth_type(ETH_TYPE_ARP)
    match.set_vlan_id(100)
    match.set_in_port(111)

    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    # Sample flow entry
    flow_entry = FlowEntry()
    flow_entry.set_flow_cookie(1234)
    flow_entry.set_flow_table_id(flow_table_id)
    flow_entry.set_flow_id(flow_id)
    flow_id += 1
    flow_entry.set_flow_hard_timeout(0)
    flow_entry.set_flow_idle_timeout(0)
    flow_entry.set_flow_priority(4000)

    instruction = Instruction(instruction_order=0)

    action = PopVlanHeaderAction(order=0)
    instruction.add_apply_action(action)

    action = OutputAction(order=1, port=110)
    instruction.add_apply_action(action)

    flow_entry.add_instruction(instruction)

    match = Match()
    match.set_eth_type(ETH_TYPE_IPv4)
    match.set_vlan_id(100)
    match.set_in_port(111)

    flow_entry.add_match(match)

    flowEntries.append(flow_entry)

    print ("\n")
    print ("<<< Remove configured flows from the Controller")
    ofswitch.delete_flows(flow_table_id)

    print ("\n")
    print ("<<< Set OpenFlow flows on the Controller")

    print ("\n")
    print ("<<< Flows to be configured:")

    flowEntries = sorted(flowEntries, key=lambda fe: fe.get_flow_priority())
    for fe in flowEntries:
        print (" %s" % fe.to_ofp_oxm_syntax())

    time.sleep(rundelay)
    success = True
    for fe in flowEntries:
        result = ofswitch.add_modify_flow(fe)
        status = result.get_status()
        if(status.eq(STATUS.OK)):
            pass
        else:
            success = False
            print ("\n")
            print ("!!!Demo terminated, failed to add flow:\n '%s'" %
                   fe.to_ofp_oxm_syntax())
            print (" Failure reason: %s" % status.detailed())

    if success:
        print "\n"
        print ("<<< Flows successfully added to the Controller")
    else:
        print "\n"
        print ("<<< Removing all flows from the Controller")
        ofswitch.delete_flows(flow_table_id)
        exit(0)

    print ("\n")
    print ("<<< Get configured flows from the Controller")
    time.sleep(rundelay)

    print ("\n")
    print ("<<< Configured flows:")
    result = ofswitch.get_configured_FlowEntries(flow_table_id=0)
    status = result.get_status()
    if(status.eq(STATUS.OK)):
        data = result.get_data()
        flowEntries = sorted(data, key=lambda fe: fe.get_flow_priority())
        for fe in flowEntries:
            print " %s" % fe.to_ofp_oxm_syntax()
    else:
        print ("\n")
        print ("!!!Demo terminated, reason: %s" % status.brief().lower())
        exit(0)

    print ("\n")
    print ("<<< Get configured flows by IDs from the Controller:")
    time.sleep(rundelay)
    for i in range(flow_id_base, flow_id):
        result = ofswitch.get_configured_FlowEntry(flow_table_id, i)
        status = result.get_status()
        if(status.eq(STATUS.OK)):
            print (" -- Flow id '%s'" % i)
            fe = result.get_data()
            print " %s" % fe.to_ofp_oxm_syntax()
        else:
            print ("\n")
            print ("!!!Demo terminated, reason: %s" % status.brief().lower())
            print ("<<< Removing all flows from the Controller")
            ofswitch.delete_flows(flow_table_id)
            exit(0)

    time.sleep(rundelay)

    print ("\n")
    print ("<<< Remove configured flows from the Controller")
    ofswitch.delete_flows(flow_table_id)

    time.sleep(rundelay)

    print ("\n")
    print ("<<< Get configured flows from the Controller")
    result = ofswitch.get_configured_FlowEntries(flow_table_id=0)
    status = result.get_status()
    if(status.eq(STATUS.DATA_NOT_FOUND)):
        print ("\n")
        print "<<< No configured flows"
    else:
        print ("\n")
        print ("!!!Demo terminated, reason: %s" % status.detailed())
        exit(0)

    print ("\n")
    print (">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>")
    print (">>> Demo End")
    print (">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>")
Esempio n. 4
0
def of_demo_5():
    f = "cfg.yml"
    d = {}
    if(load_dict_from_file(f, d) is False):
        print("Config file '%s' read error: " % f)
        exit()

    try:
        ctrlIpAddr = d['ctrlIpAddr']
        ctrlPortNum = d['ctrlPortNum']
        ctrlUname = d['ctrlUname']
        ctrlPswd = d['ctrlPswd']
        nodeName = d['nodeName']
        rundelay = d['rundelay']
    except:
        print ("Failed to get Controller device attributes")
        exit(0)

    print ("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<")
    print ("<<< Demo 5 Start")
    print ("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<")

    ctrl = Controller(ctrlIpAddr, ctrlPortNum, ctrlUname, ctrlPswd)
    ofswitch = OFSwitch(ctrl, nodeName)

    # --- Flow Match: IPv4 Source Address
    #     NOTE: Ethernet type MUST be 2048 (0x800) -> IPv4 protocol
    eth_type = ETH_TYPE_IPv4
    ipv4_src = "10.11.12.13/24"

    print ("<<< 'Controller': %s, 'OpenFlow' switch: %s" %
           (ctrlIpAddr, nodeName))

    print "\n"
    print ("<<< Set OpenFlow flow on the Controller")
    print ("        Match:  Ethernet Type (%s)\n"
           "                IPv4 Source Address (%s)" %
           (hex(eth_type), ipv4_src))
    print ("        Action: Drop")

    time.sleep(rundelay)

    flow_entry = FlowEntry()
    table_id = 0
    flow_entry.set_flow_table_id(table_id)
    flow_id = 12
    flow_entry.set_flow_id(flow_id)
    flow_entry.set_flow_priority(flow_priority=1000)

    # --- Instruction: 'Apply-actions'
    #     Action:      'Drop'
    instruction = Instruction(instruction_order=0)
    action = DropAction(order=0)
    instruction.add_apply_action(action)
    flow_entry.add_instruction(instruction)

    # --- Match Fields: Ethernet Type
    #                   IPv4 Source Address
    match = Match()
    match.set_eth_type(eth_type)
    match.set_ipv4_src(ipv4_src)
    flow_entry.add_match(match)

    print ("\n")
    print ("<<< Flow to send:")
    print flow_entry.get_payload()
    time.sleep(rundelay)
    result = ofswitch.add_modify_flow(flow_entry)
    status = result.get_status()
    if(status.eq(STATUS.OK)):
        print ("<<< Flow successfully added to the Controller")
    else:
        print ("\n")
        print ("!!!Demo terminated, reason: %s" % status.brief().lower())
        exit(0)

    print ("\n")
    print ("<<< Get configured flow from the Controller")
    time.sleep(rundelay)
    result = ofswitch.get_configured_flow(table_id, flow_id)
    status = result.get_status()
    if(status.eq(STATUS.OK)):
        print ("<<< Flow successfully read from the Controller")
        print ("Flow info:")
        flow = result.get_data()
        print json.dumps(flow, indent=4)
    else:
        print ("\n")
        print ("!!!Demo terminated, reason: %s" % status.brief().lower())
        exit(0)

    print ("\n")
    print ("<<< Delete flow with id of '%s' from the Controller's cache "
           "and from the table '%s' on the '%s' node" %
           (flow_id, table_id, nodeName))
    time.sleep(rundelay)
    result = ofswitch.delete_flow(flow_entry.get_flow_table_id(),
                                  flow_entry.get_flow_id())
    status = result.get_status()
    if(status.eq(STATUS.OK)):
        print ("<<< Flow successfully removed from the Controller")
    else:
        print ("\n")
        print ("!!!Demo terminated, reason: %s" % status.brief().lower())
        exit(0)

    print ("\n")
    print (">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>")
    print (">>> Demo End")
    print (">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>")