For improving network interface card s communications performance,the implementation of virtual-physical address translation is reatized in the user s space through the memory mapped of address manage table,and the communications data s zero copy is realized from the user s space to the network interface card(NIC).

The methods of translating virtual address to actual address by first-level page table and the second-level page table are described too.

In order to optimize performance, including speed and the usage of its memory, CPU usually hires a Translation Lookaside Buffer(TLB) to translate the virtual address into physical address.

The ways of bus-competing and virtual address accessing are also analyzed.

The design makes use of grey code as its address code and generates flag bit by dummy-address-page.

The paper introduces the operation method of MMU in TONGXINⅠ which is a TD-SCDMA baseband ASIC including address translation and cache control.

This paper presented a new security technology-honeyfarm based on large scale distributed network,and proposed the IP address translation algorithm under honeyfarm architecture, which achieved dynamic address mapping between the honeypot host and the monitored IP address,and increased the security of the honeyfarm architecture and the utilization of the honeypot host.

Through to the network load balancing technology research and analysis,a kind of the network that have dual dispatch mechanism and have buffer capacity expandable is designed and realized by useing dns round-robin,net address translation and net load balance cluster technical,which solved the question that the network service load balance,the response time,the turnover rate and the reliable.