But we gladly trade the wasteful inefficiencies of multiplerouting in order to keep the Internet's remarkable flexibility.
多路由选择既浪费且效率低下，但我们很高兴可以借此保证互联网的非凡灵活性。
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As core router may be used in all kinds of environments, it must implement multiplerouting protocols, including RIP, OSPF, IS-IS, BGP and other Interior or Exterior routing protocols.
A common idiom in the existing best practices is to use the cluster as the top-level namespace and configure multiple separate clusters to provide namespace isolation and routing.