code: def create_customer_gateway(self, type, ip_address, bgp_asn):
          
          params = {'Type' : type,
                    'IpAddress' : ip_address,
                    'BgpAsn' : bgp_asn}
          return self.get_object('CreateCustomerGateway', params, CustomerGateway)
docs: Create a new Customer Gateway
  
          :type type: str
          :param type: Type of VPN Connection.  Only valid valid currently is 'ipsec.1'
  
          :type ip_address: str
          :param ip_address: Internet-routable IP address for customer's gateway.
                             Must be a static address.
  
          :type bgp_asn: str
          :param bgp_asn: Customer gateway's Border Gateway Protocol (BGP)
                          Autonomous System Number (ASN)
  
          :rtype: The newly created CustomerGateway
          :return: A :class:`boto.vpc.customergateway.CustomerGateway` object