> For the complete documentation index, see [llms.txt](https://yeasy.gitbook.io/openstack_code_neutron/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yeasy.gitbook.io/openstack_code_neutron/neutron.md).

# neutron

该目录下包含了neutron实现的主要代码。 neutron从设计理念上来看，可以分为neutron-server相关（含各种plugin）和neutron-agent相关两大部分。 其中neutron-server维护high-level的抽象网络管理，并通过不同产品的plugin（这些plugin需要实现neutron定义的一系列操作网络的API）转化为各自agent能理解的指令，agent具体执行指令。简单的说，neutron-server是做决策的，各种neutron-agent是实际干活的，plugin是上下沟通的。如图表 1 所示。在这种结构中，同一时间只能有一套 plugin--agent 机制发生作用。

![Neutron](/files/-M5y0ZI3gkmACN8Kg_mC)

目前，ML2子项目希望统一plugin对上接口，通过提供不同的驱动，来沟通不同产品的实现机制。


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