摘要
分类IP存在着地址严重的浪费现象,划分子网不能解决主干路由表过长的问题。CIDR将IP地址由3级又回到了两级,降低了主干路由表的长度,提高了地址分配的灵活性。
Severe waste of addresses existed in classification of IP. The problem that the length of the trunk routing table is too long is not solved by dividing subnetwork. CIDR reduced routing table's length in order to enhance the flexibility of address assignment.
出处
《信息技术》
2004年第6期62-63,共2页
Information Technology
