def run_pfcwd_burst_storm_test(api,
                                   testbed_config,
                                   port_config_list,
                                   conn_data,
                                   fanout_data,
                                   duthost,
                                   dut_port,
                                   prio_list,
                                   prio_dscp_map):
        """
        Test PFC watchdog under bursty PFC storms

        Args:
            api (obj): SNAPPI session
            testbed_config (obj): testbed L1/L2/L3 configuration
            port_config_list (list): list of port configuration
            conn_data (dict): the dictionary returned by conn_graph_fact.
            fanout_data (dict): the dictionary returned by fanout_graph_fact.
            duthost (Ansible host instance): device under test
            dut_port (str): DUT port to test
            prio_list (list): priorities to generate PFC storms and data traffic
            prio_dscp_map (dict): Priority vs. DSCP map (key = priority).

        Returns:
            N/A
        """
        pytest_assert(testbed_config is not None,
                      'Fail to get L2/3 testbed config')

        start_pfcwd(duthost)
        enable_packet_aging(duthost)

        """ Get the ID of the port to test """
        port_id = get_dut_port_id(dut_hostname=duthost.hostname,
                                  dut_port=dut_port,
                                  conn_data=conn_data,
                                  fanout_data=fanout_data)

        pytest_assert(port_id is not None,
                      'Fail to get ID for port {}'.format(dut_port))

>       poll_interval_sec = get_pfcwd_poll_interval(duthost) / 1000.0
E       TypeError: unsupported operand type(s) for /: 'NoneType' and 'float'

api        = <snappi_ixnetwork.snappi_api.Api object at 0x7eff06e5a2e0>
conn_data  = {'device_bmc_info': {'qsp305': {}}, 'device_bmc_link': {'qsp305': {}}, 'device_conn': {'qsp305': {'Ethernet10': {'peer...device': 'snappi-sonic', 'peerport': 'Card1/Port5.1', 'speed': '200000'}}}, 'device_console_info': {'qsp305': {}}, ...}
dut_port   = 'Ethernet16'
duthost    = <MultiAsicSonicHost qsp305>
fanout_data = {'snappi-sonic': {'device_bmc_info': {}, 'device_bmc_link': {}, 'device_conn': {'Card1/Port5.1': {'peerdevice': 'qsp30...ard1/Port6.2': {'peerdevice': 'qsp305', 'peerport': 'Ethernet18', 'speed': '200000'}}, 'device_console_info': {}, ...}}
port_config_list = [<tests.common.snappi_tests.port.SnappiPortConfig object at 0x7eff07d65a90>, <tests.common.snappi_tests.port.SnappiPortConfig object at 0x7eff06efafd0>, <tests.common.snappi_tests.port.SnappiPortConfig object at 0x7eff07a9f220>]
port_id    = 2
prio_dscp_map = {0: [8], 1: [0, 1, 10, 11, 12, 13, ...], 2: [5], 3: [3], ...}
prio_list  = [3]
testbed_config = <snappi.snappi.Config object at 0x7eff06ceef00>

snappi_tests/pfcwd/files/pfcwd_burst_storm_helper.py:65: TypeError</failure></testcase></testsuite></testsuites>