Huawei Technologies Co., Limited

Chong Zhan

Jian Zhang

Jun Gong

Rui Hu

Hongfei Chen

Xiaozhong Wang

Tuanhui Sun

Hao Su

Hunghsiang Jonathan Chao

Hongxiang Zhao

A method for selecting a hash function, a method for storing and searching a routing table and devices thereof are provided. The method for selecting a hash function includes: hashing data to be hashed by using a current alternative hash function; decoding a hash result; accumulating decoded results until no carry occurs during the accumulation; and selecting a current alternative hash function with no carry generated as a formal hash function. The method for storing a routing table includes: dividing the routing table into a next-level node pointer portion and a prefix portion for being stored; and selecting a hash function by using the above method for selecting a hash function. The method for searching a routing table includes: directly searching an IP address to be searched according to a directly stored length of a next-level node pointer portion for storing the routing table; and reading a prefix node according to a searched result. Thus, hash collision can be avoided, and memory resources occupied by the routing table can be effectively reduced.

Method for selecting hash function, method for storing and searching routing table and devices thereof

Growing community of inventors

Shenzhen, China

Chong Zhan