A P2P Traffic Localization Method with Additional Delay Insertion

Abstract

Recently, it has been noted that the inefficiencies in peer-to-peer (P2P) overlay networks result in a large quantity of traffic among internet service providers (ISPs) or autonomous systems (ASes). To optimize cross-ISP/AS traffic, the existing approaches introduce network-aware strategies in which peers select geographically close peers as neighbors using topological information. However, each P2P application must be equipped with a locality-aware neighbor-selection procedure and/or a communication protocol to obtain the topological information from an "oracle" server; i.e., modifications of P2P applications are required for this scheme. In this study, we propose a novel approach for P2P traffic localization, called P2P-DISTO, featuring the insertion of an additional delay into each P2P packet based on the geographic location of its destination. Because P2P-DISTO is implemented on network routers independently of applications, it can be utilized by all P2P applications without software modifications. The experimental evaluations using existing P2P video streaming services show that our fundamental concept successfully achieves P2P traffic localization by discouraging connections with faraway peers due to the additional delay.

P2P traffic localization by forcing packet loss

“…This is sometimes very hard due to closed design or license problem of commercial software. Miyoshi et al [10] proposed P2P-DISTO framework for P2P traffic localization without any modification of existing application software. According to the geographical location of peers, the packets that were sent to or received from farther peers were inserted longer additional delay than closer peers.…”

“…From the viewpoint of the applications, longer round-trip time (RTT) leads to longer delay. From this observation, Miyoshi et al proposed P2P-DISTO [10] that adjusts RTT by inserting additional delay into each packet depending on the geographical location of its destination in order to localize the traffic. However, to delay the traffic, the routers need to hold the packets for a certain time before forwarding them to the destination.…”

“…This makes P2P traffic control problem become more challenging. A variety of methods have been introduced, and many works from [5]- [9], [10]- [13], suggest that the consideration of peer location would reduce inter-ISP/AS traffic and conserve the bandwidth. This forms the problem of traffic localization.…”

P2PTV Traffic Localization by Deep Packet Inspection

“…In contrast, we focus on P2PTV and evaluate our proposed method on real network. Miyoshi localization [12]. The idea is the insertion of additional delay into each packet according to geographical location of the destination at network routers.…”

“…Many methods have been proposed for addressing the problem [6]- [12]. However, almost all existing approaches require several modifications of application software.…”