'get existing info'

def get_existing(self):

    if (not self.ospf_info):
        return
    self.existing['process_id'] = self.process_id
    self.existing['areas'] = self.ospf_info['areas']
    self.existing['nexthops'] = self.ospf_info['nexthops']
    self.existing['max_load_balance'] = self.ospf_info.get('maxLoadBalancing')
