如果你有多套方案的主机/云服务提供商，本地方式结合同物理设施内的按需请求资源拥有长处。
If you have a multi-offer type of hosting/cloud provider, there are benefits of co-lo coupled with on demand resources being in the same physical facility.
端站可以被分配永久的IP地址，或者按需要从动态主机配置协议(DHCP)服务器或其他服务中借用。
End stations may be assigned permanent IP addresses or they may borrow them as needed from a Dynamic Host Configuration Protocol (DHCP) server or other service.
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