文章基本信息

标题：Extending Router Lifetime with Virtual Aggregation
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作者：y Paul Francis ; Max Planck Institute for Software Systems ; Xiaohu Xu 等
期刊名称：The Internet Protocol Journal
出版年度：2010
卷号：13
期号：1
出版社：Cisco Press
摘要：B iologists believe that human life is limited by the number of times cells can replicate; noncancerous cells have a kind of internal counter that prevents them from replicating forever. Even if humans are kept healthy in every respect, they will eventually die simply because their cells will cease to replicate. Internet routers also have a fnite lifetime. They are built with a fxed amount of hard- ware memory for storing the forwarding table (the memory structure that tells the router where to forward any IP packet, also called the Forwarding Information Base [FIB]). As the Internet global routing table grows, it eventually overfows the FIB, and the router ceases to be able to hold the full routing table. Even if the router is healthy in every respect (all of its hardware components still operate), it can no longer function as a router in the Internet Default-Free Zone (DFZ), where no default routes can be used.