红帽全球峰会11.6. 创建其他网桥映射
只要部署期间映射其他网桥，浮动 IP 网络可以使用任何网桥，而不只是 br-ex。
例如，要将名为 br-floating 的新网桥映射到 floating 物理网络，可在环境文件中包括 NeutronBridgeMappings 参数：
parameter_defaults: NeutronBridgeMappings: "datacentre:br-ex,floating:br-floating"
parameter_defaults:
NeutronBridgeMappings: "datacentre:br-ex,floating:br-floating"
使用此方法，您可以在创建 overcloud 后创建单独的外部网络。例如，要创建映射到 floating 物理网络的浮动 IP 网络，请运行以下命令：
source ~/overcloudrc
$ source ~/overcloudrc
(overcloud) $ openstack network create public --external --provider-physical-network floating --provider-network-type vlan --provider-segment 105
(overcloud) $ openstack subnet create public --network public --dhcp --allocation-pool start=10.1.2.51,end=10.1.2.250 --gateway 10.1.2.1 --subnet-range 10.1.2.0/24
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