发明名称 |
Fast IP route lookup with configurable processor and compressed routing table |
摘要 |
A novel compression method uses bitmaps to reduce the memory storage requirement of routing table information to about 3 MB. The data structure can be used for both route lookup and update. It does not require a separate data structure to be used for route update. A fast route lookup method is also disclosed. An efficient update method supports incremental route update. Through configuring a processor properly and developing a few customized instructions specifically for route lookup, the system can achieve more than 10 million lookups per second (MLPS) at 200 MHz. Using a configurable processor for route lookup/update provides more flexibility and extensibility which supports different data structures and lookup/update methods to meet application specific needs. The data structure and lookup method can be implemented in pure hardware in a pipelined fashion to achieve approximately 100 MLPS.
|
申请公布号 |
US6888838(B1) |
申请公布日期 |
2005.05.03 |
申请号 |
US20010780895 |
申请日期 |
2001.02.09 |
申请人 |
TENSILICA, INC. |
发明人 |
JI HONGBIN;SRINIVASAN RANGARAJAN |
分类号 |
H04L12/56;(IPC1-7):H04L12/28 |
主分类号 |
H04L12/56 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|