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A content-centric network is one which supports host-to-content routing, rather than the host-to-host routing of the existing Internet. This paper investigates the potential of caching data at the router-level in content-centric networks. To achieve this, two measurement sets are combined to gain an understanding of the potential caching benefits of deploying content-centric protocols over the current...
In the network operator-friendly P2P traffic control technique such as P4P, peers are supposed to select their communication partners by following a guidance issued by the network operator. Thus, the guidance has significant impact on the traffic control. However, detailed performance study of available guidances is missing. Most existing work does not show how they affect intra-domain traffic control...
BitTorrent is one of the most popular application in the current Internet. However, we still have little knowledge about the topology of real BitTorrent swarms and how the traffic is actually exchanged among peers. This paper addresses fundamental questions regarding the topology of live BitTorrent swarms. For this purpose we have collected the evolution of the graph topology of 250 real torrents...
In the internet today, computing and communication networks are very chaotic and complex. They do not have any centralized organization or hierarchical control. Thus there has been much interest in peer-to-peer networks because they provide a good substrate for creating large scale data sharing, content distribution and application level multicast. Many internet applications need to perform large...
This paper suggests ISP-provided content delivery service that provides fine-grained locality and exploits network status in content routing to overcome the dilemma from current content delivery technology like P2P. Hierarchical DHT provides an efficient and scalable distributed data service architecture and it is able to achieve high level of locality over ISP network which has a hierarchical topology...
P2P applications attract a lot of users and generate the dominant portion of the overall traffic in the Internet today. On the one hand, this large amount of traffic results in high operational costs for ISPs, mainly because of expensive interdomain connections. On the other hand, the performance of P2P applications is constricted by suboptimal peer selection or by bandwidth limitations of ISPs. To...
Multi-domain traffic engineering is a major focus area for carriers and crankback signaling offers a very promising alternative. However, even though various crankback studies have been done, there remains significant latitude for improved multi-domain designs. To address these challenges, this work develops a novel solution for intra/inter-domain signaling crankback in IP/MPLS networks. Namely, dynamic...
IP Fast ReRoute (IPFRR) has received increasing attention as a means to effectively shorten traffic disruption under failures. A major approach for IPFRR is to pre-calculate backup paths for nodes and links. Such approach is, however, hard to deploy due to the tremendous computational overhead. Thus, a lightweight IPFRR scheme is desired to effectively detour failures and provide routing protection...
The rapid diffusion of wireless technologies for network access has fostered the expectation for enhanced forms of communication in the current and future Internet. To this aim, there is a large consent about pursuing user-centric and pervasive paradigms; that requires an integrated and uniform approach to mobility management, taking into account all the different aspects of this issue. However, current...
Structured P2P system doesn't consider the actual physical topology when building the logical overlay, which would cause a serious mismatching between logical overlay network and physical network and affect the routing performance of the system. An advanced algorithm of K-bucket updating strategy base on structured Kademlia system was proposed. Using Landmark Binning algorithm and RTT detection will...
Emergency services and networks are an emerging area of scientific research. During an emergency scenario such as forest fires, earthquakes, tsunamis and terrorist attacks rescuers need to establish communication to coordinate their actions by using smart and lightweight mobile devices. To this end, autonomous networks should be utilised to support the afore communications. Mobile Ad-hoc Networks...
This paper studies distributed multi-domain, multi-layer provisioning (grooming) in IP/MPLS-DWDM networks. Although many multi-domain studies have emerged over the years, these have primarily considered "homogeneous" network layers. Meanwhile, most grooming studies have assumed idealized settings with "global" link state across all layers. Hence there is a critical need to develop...
Intra-domain traffic engineering can significantly enhance the performance of large IP backbone networks. An important component of current methods for traffic engineering with link state routing protocols like OSPF is accurate knowledge of traffic matrix. However, the traffic matrix is unknown and varies with time. So it is important to obtain a traffic engineering method that is "robust"...
IP fast reroute techniques have been proposed for achieving fast failure recovery in just a few milliseconds. The basic idea of IP fast reroute is to reduce recovery time after failure by precomputing backup routes. A multiple routing configurations (MRC) algorithm has been proposed for obtaining IP fast reroute. MRC prepares backup configurations, which are used for finding a detour route after failure...
One of the main challenges in all-IP networks is the development of suitable mobility solution. Mobile IP (MIP) presents the standard protocol used to support IP mobility. However, MIP is inadequate for real-time applications and inter-domain mobility (when a mobile node performs handover between two autonomous systems (AS)). In this paper, we propose an efficient approach to manage inter-domain handover...
Resource discovery is a key component of P2P network. The resource discovery algorithm complexities of classic models, such as Chord and Pastry, are always equal or even bigger than O(logN), which means while the network scale increasing, the time delay will also increase rapidly without a ceiling. In this paper, we present a new P2P network model for resource discovery. Firstly, we take location-aware...
Incorporating multi-hop ad hoc wireless networks in the IP infrastructure is an effort to which a growing community participates. One instance of such activity is the extension of the most widely deployed interior gateway routing protocol on the Internet, OSPF (Open Shortest Path First), for operation on Mobile Ad hoc Networks (MANETs). Such extension allows OSPF to work on heterogeneous networks...
Private Network-Network Interface (PNNI) is a routing protocol standard developed by the ATM Forum for the connection-oriented ATM networking technology. Open Shortest Path First (OSPF) and Border Gateway Protocol (BGP) are the corresponding IETF standards for connectionless IP networks. In this paper, we compare the hierarchical routing properties of these two sets of routing protocols.
While multicasting is considered valuable for content distribution, it is not widely supported on the Internet. Content providers have instead turned to peer assisted content distribution in order to efficiently serve large numbers of clients via unicast, thus removing the bandwidth bottleneck from their side. The redundant unicast transmissions of the same packet are not avoided however, they are...
This paper proposes an architecture for inter-domain routing, called DTIA - Dynamic Topological Information Architecture. DTIA separates the issues of reachability and routing, and this paper addresses the first one. One major requirement has been not to change IP packets and the commercial relations in the Internet. DTIA is based on the knowledge of a static network formed by the Autonomous Systems...
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