软件定义网络中基于区块链的域间感知延迟路由建议

Andis Āriņš
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引用次数: 9

摘要

边界网关协议(BGP)版本4是目前互联网的路由,已有20多年的历史。在这种规模的网络中,BGP是唯一被证明具有持续增长的路由能力的协议。尽管BGP具有可伸缩性和网络层可达性信息,但它缺乏延迟等服务质量指标。BGP路由决策算法将自治系统之间的AS路径长度作为其大多数最佳路径计算的主要因素。由于越来越多的可负担的对等架构,在全球互联网网络中,路径长度普遍减少,导致实时互联网协议流量的路由效率降低。本研究提出了未来的互联网架构,由多个应用系统组成,在软件定义网络(SDN)中提供延迟感知路由。为了获得最高的可靠性,每对连接的自治系统之间都有双边延迟测量。延迟测量结果存储在分布式分散的区块链网络中,每个自治系统都拥有自己的份额。每个自治系统承载一个SDN实例,用于在自治系统边界上与相邻的SDN控制器互连。SDN实例处理来自区块链网络的延迟测量数据,验证数据完整性并管理实时数据流的延迟感知路由。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Blockchain based Inter-domain Latency Aware Routing Proposal in Software Defined Network
Border gateway protocol (BGP) version 4 is routing current Internet for more than 20 years. BGP is the only protocol that has proven its routing capability of such size network with continually growing nature. Although BGP is scalable and network layer reachability information it lacks quality of service metrics like latency. BGP routing decision algorithm uses as-path length between autonomous systems (AS) as main factor for most of its best-path calculations. Because of more affordable peering architectures as-path length is generally decreasing in worldwide internet network resulting in less efficient routes for real-time internet protocol traffic. This study proposes future internet architecture consisting of multiple AS which provide latency aware routing in software defined network (SDN). For highest reliability there are bilateral latency measurements between each pair of connected autonomous systems. Latency measurement results are stored in distributed decentralized blockchain network where each AS holds its share. Each AS hosts an SDN instance for interconnection with neighbor SDN controllers over AS border. SDN instances processes latency measurement data from blockchain network, validates data integrity and manages latency aware routing for real-time data flows.
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