【openstack】Quantum关于Port的操作(LinuxBridge)

Quantum关于Port的操作(LinuxBridge)

1      创建port

1.1    流程

(2012/12/13修正): 为port分配IP时，当没有指定fixed_ip，是从network中选一个有空闲IP的subnet分配IP ，而不是从所有subnet分配。

 

    # 校验fixed_ips的合法性

    def _test_fixed_ips_for_port(self, context, network_id, fixed_ips):

        """Test fixed IPs for port.

 

        Check that configured subnets are valid prior to allocating any

        IPs. Include the subnet_id in the result if only an IP address is

        configured.

 

        :raises: InvalidInput, IpAddressInUse

        """

        fixed_ip_set = []

        for fixed in fixed_ips:

            found = False

            # 如果没有指定subnet

            if 'subnet_id' not in fixed:

                # 如果既没有指定subnet，也没有指定ip_address，抛错

                if 'ip_address' not in fixed:

           &n