A Dynamic Routing Method for Content-Centric Networks Based on Selective Caching

Abstract

A dynamic routing method for content-centric networks based on selective caching, in which during the process of transmitting the interest packet in the user request from the end user to the data provider, the routers passing through dynamically modify the information in the interest packet to determine the caching router; when the interest packet finally reaches the data provider, the interest packet determines and records the distance from the end user to the data provider, and the distance from the end user to the cache router that caches the returned data packet; When the data provider returns the data packet, the data provider copies the information about the selected cache router in the interest packet to the returned data packet; during the return process of the data packet, each time a router arrives, its information is dynamically updated, and according to the update result, the data Packets are cached on cache routers. The invention can make full use of the cache space of routers in the network, realize load balance, and can carry out effective routing without bringing extra burden to network bandwidth.

Description

technical field [0001] The invention relates to a computer network, in particular to a selective cache-based content-centric network dynamic routing method. Background technique [0002] Today's network architecture was established in the 1960s and 1970s. At the beginning of the establishment of the Internet, the Internet was mainly used for the connection between major scientific research institutions and government agencies, so there was mutual trust between the various hosts on the Internet. Moreover, the Internet was originally mainly used for sharing data and services between large machines. The network topology was relatively simple and the service types were also very single. Therefore, limited to the use of the Internet at that time, the communication between various hosts in the Internet adopted a point-to-point communication method. . [0003] With the development of science and technology and society, in today's society, the production cost of hardware equipment...

AI Technical Summary

Problems solved by technology

However, this method is difficult to apply in actual deployment, because data packets in the network will be frequently cached and replaced. If each cache and replacement is notified to the entire network, it will generate huge network traffic in the network. place a huge burden on the network

Moreover, when there are a large number of data packets in the network (much larger than the number of routers), it is very expensive to run the Dijkstra algorithm to calculate the shortest path in units of data packets.

[0025] Due to the lack of effective caching and replacement strategies, named data networking is difficult to implement in real networks

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