An Age-Based Membership Protocol against Strong Churn in Unstructured P2P Networks

Haowen Liu, Xiwen Liu, Wei Song, Weidong Wen
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引用次数: 13

Abstract

Churn refers the continuous process of node arrival and departure in distributed peer-to-peer network. Enormous nodes joining the system concurrently will results in a flash crowd scenario for special nodes in the system, and enormous nodes crashing in a moment might come out a broken network. In fact, the joining and crashing always occur around some nodes at the same time, which will conduct strong dynamic environment and affect the detailed application over the overlay very much. In P2P networks under churn, We divide the new joining nodes into normal freshman, whitewasher and crowd attackers, and divide the departure nodes into normal dying nodes, outcast whitewasher and partition attackers. So the churn will be composed of tolerable normal lifespan behavior, the frightfully spiteful attack behavior or passive whitewashing behavior, which should be seriously noticed. In this paper, we present a novel protocol with positive communication policy among peers and conservative neighbor maintenance scheme under churn, to keep desirable properties such as a low network diameter and clustering. The protocol is resilient against different extend of churn and fit for P2P information dissemination and file sharing systems especially.
针对非结构化P2P网络中强流失的基于年龄的成员协议
流失率是指分布式点对点网络中节点到达和离开的连续过程。大量节点同时加入系统,会导致系统中特定节点出现flash crowd场景,大量节点瞬间崩溃可能导致网络崩溃。事实上,连接和崩溃总是同时发生在一些节点周围,这将产生强烈的动态环境,并对覆盖层的详细应用产生很大影响。在用户流失的P2P网络中,我们将新加入节点分为正常新生、洗白者和人群攻击者,将离开节点分为正常死亡节点、被抛弃洗白者和分区攻击者。因此,这种流失将由可容忍的正常寿命行为、可怕的恶意攻击行为或被动的洗白行为组成,应引起重视。本文提出了一种新的协议,该协议在用户流失的情况下采用正通信策略和保守的邻居维护方案,以保持低网络直径和集群性。该协议对不同程度的用户流失具有弹性,特别适合于P2P信息传播和文件共享系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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