Abstract
<p class="JESTECAbstract">Content Centric Networking (CCN) is a modern architecture that got wide attention in the current researches as a substitutional for the current IP-based architecture. Many studies have been investigated on this novel architecture but only little of them focused on Pending Interest Table (PIT) which is very important component in every CCN router. PIT has fundamental role in packet processing in both upstream process (Interest packets) and downstream process (Data packets). PIT must be fast enough in order to not become an obstruction in the packet processing and also it must be big enough to save a lot of incoming information. In this paper, we suggest a new PIT design and implementation named CF-PIT for CCN router. Our PIT design depends on modifying and utilizing an approximate data structure called Cuckoo filter (CF). Cuckoo filter has ideal characteristics like: high insertion/query/deletion performance, acceptable storage demands and false positive probability which make it with our modification convenient for PIT implementation. The experimental results showed that our CF-PIT design has high performance in different side of views which make it very suitable to be implemented on CCN routers.</p>
Highlights
Content Centric Networks (CCN) is a new paradigm that aims to dominate the restrictions that are exist in the present network paradigm [1]
We will debate our evaluation for the proposed Cuckoo filter (CF)-Pending Interest Table (PIT) aiming to evince the competence of our suggested technique
DiPIT utilizes several counting Bloom filters (CBF) in a distributed manner along with a main counting Bloom filter that is shared among all ports
Summary
Content Centric Networks (CCN) is a new paradigm that aims to dominate the restrictions that are exist in the present network paradigm [1]. The role of PIT in any CCN router is to remember these CCN names and from which port the Interest packet comes in. When this Interest packet reach the content provider, the latter will respond by sending back the requested data in a Data packet [5]. This paper proposes a novel design and implementation for PIT table in Content Centric Networking (CCN) by modifying a previously suggested data structure: Cuckoo filter (CF) [9]. Utilizing our proposed modification for Cuckoo filter (CF-PIT) to design and implement pending interest table for CCN router.
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