These days, in addition to host-to-host communication, Information-Centric Network (ICN) has emerged to reflect current content-centric network usage that many users are now interested not in where the content is but in acquired contents themselves. However, the authors believe that current IP network still remains, at least from deployment perspective, as one of near future network architectures. This is because ICN has various scalability and feasibility challenges, and hostto-host communication is also diffused like remote login, VoIP, and so on. Therefore, the authors' research aims to establish the feature of information-centric network on conventional IP network to achieve feasible architecture. In this paper, we propose to operate Breadcrumbs (BC) and Content Delivery Network (CDN) frameworks coordinately on IP network to improve the performance on content retrieval and acquisition. Both BC and CDN are important as a content-centric technique. Finally, we compare the proposed method with CDN that we carefully modeled through simulation. Simulation results show that our approach can reduce server load.

These days, server load has been increasing because of various factors such as larger content size and flash crowd. Content Delivery Network (CDN) is widely used to deal with this problem. In CDN, replica servers are placed dispersedly in all over the Internet to achieve high QoS content delivery. On the other hand, Breadcrumbs (BC) method is proposed to implement content-oriented network framework on the conventional IP network. BC is a guidance information which is created in routers to utilize user's cache. In this paper, we operate CDN and BC framework together on IP network to improve the performance on content retrieval and acquisition. Finally, we make a CDN model and evaluate the coexisting approach through simulation. Simulation results show that our approach can greatly reduce server load.

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