在用户每次提交一个读写数据的请求时，这可以将要查询的整个表装入内存中。
This allows the entire lookup table to be loaded into memory each time a user submits a request to read or write data.
它具有一个集成的内存管理单元，通常使用与PPE类似的页表查询机制来提供对某个进程地址空间的访问。
It has an integrated memory management unit that is normally used to provide access to the address space of one process by using the same page table lookup as the PPE.
当大量组播组并存于网络时，数量庞大的转发状态表占用了大量内存资源并且减缓了组播地址查询过程。
When there are large Numbers of multicast groups in the network, large forwarding tables induce large memory requirements and slow down the address look-up process.
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