通过仔细观察，我们发现新链路层地址的邻居缓存条目会覆盖旧的条目。
Through aborative observation, we found that the Neighbor Cache entry with the new link-layer address overwrites the old.
本文基于数据链路层地址解析协议ARP的内部工作原理，研究了图书馆网络的安全防范问题。
This paper, by analyzing internal work principle of ARP protocol, researches on security of library network.
利用数据链路层地址解析协议(ARP)可以进行IP冲突、ARP欺骗、ARP溢出等方式的网络攻击。
Via address resolution protocol in data link layer, hackers can launch various attacks, such as IP conflict attack, ARP deceive attack and ARP overflow attack.
本发明使得区域网络内的MAC地址仅仅在其内部学习和传播，从而有效地限制了MAC地址的数量，节省了链路层设备的MAC表资源，避免因链路层网络的规模影响网络的性能。
The invention only learns and transmits MAC address in local network, to limit the number of MAC address, save MAC list resource of chain layer, and improve network property.
本发明使得区域网络内的MAC地址仅仅在其内部学习和传播，从而有效地限制了MAC地址的数量，节省了链路层设备的MAC表资源，避免因链路层网络的规模影响网络的性能。
The invention only learns and transmits MAC address in local network, to limit the number of MAC address, save MAC list resource of chain layer, and improve network property.
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