缓存始终采用对象映射的形式，具有大小上限。

Caches almost always take the form of object maps with an upper size limit.

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然而，ARP映射缓存有时却成为一个问题。

However, the ARP cache sometimes becomes a problem.

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在受控的环境中执行此映射为您提供了优化映射缓存限制的很好起点。

Doing this mapping in a controlled environment gives you a good starting point in tuning your mapping cache limits.

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