deviceManager = context.getServiceImpl(IDeviceService.class);
routingEngine = context.getServiceImpl(IRoutingService.class);
topology = context.getServiceImpl(ITopologyService.class);
sfp = context.getServiceImpl(IStaticFlowEntryPusherService.class);
messageDamper = new OFMessageDamper(OFMESSAGE_DAMPER_CAPACITY,
EnumSet.of(OFType.FLOW_MOD),
OFMESSAGE_DAMPER_TIMEOUT);
vips = new HashMap<String, LBVip>();
pools = new HashMap<String, LBPool>();