def VerifyAllProtocolSessionsNgpfPy():
    # This API will loop through each created Topology Group and verify
    # all the created protocols for session up for up to 90 seconds total.
    # 
    # Returns 0 if all sessions are UP.
    # Returns 1 if any session remains DOWN after 90 seconds.

    protocolList = ['ancp',
                    'bfdv4Interface',
                    'bgpIpv4Peer',
                    'dhcpv4relayAgent',
                    'dhcpv4server',
                    'geneve',
                    'greoipv4',
                    'igmpHost',
                    'igmpQuerier',
                    'lac',
                    'ldpBasicRouter',
                    'ldpConnectedInterface',
                    'ldpTargetedRouter',
                    'lns',
                    'openFlowController',
                    'openFlowSwitch',
                    'ospfv2',
                    'ovsdbcontroller',
                    'ovsdbserver',
                    'pcc',
                    'pce',
                    'pcepBackupPCEs',
                    'pimV4Interface',
                    'ptp',
                    'rsvpteIf',
                    'rsvpteLsps',
                    'tag',
                    'vxlan'
                ]

    sessionDownList = ['down', 'notStarted']
    startCounter = 1
    timeEnd = 120
    import time

    for protocol in protocolList:
        for topology in ixNet.getList(ixNet.getRoot(), 'topology'):
            for deviceGroup in ixNet.getList(topology, 'deviceGroup'):
                for ethernet in ixNet.getList(deviceGroup, 'ethernet'):
                    for ipv4 in ixNet.getList(ethernet, 'ipv4'):                        
                        for currentProtocol in ixNet.getList(ipv4, protocol):
                            for timer in range(startCounter, timeEnd+1):
                                currentStatus = ixNet.getAttribute(currentProtocol, '-sessionStatus')
                                print '\n%s' % currentProtocol
                                print '\tTotal sessions: %d' % len(currentStatus)
                                totalDownSessions = 0
                                for eachStatus in currentStatus:
                                    if eachStatus != 'up':
                                        totalDownSessions += 1
                                print '\tTotal sessions Down: %d' % totalDownSessions

                                if timer < timeEnd and [element for element in sessionDownList if element in currentStatus] == []:
                                    print '\tProtocol sessions are all up'
                                    startCounter = timer
                                    break
                                if timer < timeEnd and [element for element in sessionDownList if element in currentStatus] != []:
                                    print '\tWait %d/%d seconds' % (timer, timeEnd)
                                    time.sleep(1)
                                    continue
                                if timer == timeEnd and [element for element in sessionDownList if element in currentStatus] != []:
                                    print '\tProtocol session failed to come up:'
                                    return 1
    return 0