A Two-Stage Failover Mechanism for High Availability in Service Function Chaining

IF 0.9 4区计算机科学 Q4 COMPUTER SCIENCE, INFORMATION SYSTEMS

Journal of Internet Technology Pub Date : 2018-01-01 DOI:10.3966/160792642018011901022

Hosung Baek, Haneul Ko, Gwangwoo Park, Sangheon Pack, Jiyoung Kwak

引用次数: 1

Abstract

Service function chaining (SFC) enables specific network flows to be processed through an ordered set of service functions. In this paper, we propose a two-stage failover mechanism to provide high availability (HA) in SFC. In the proposed mechanism, a secondary service function path (SFP) is pre-computed, which is maximally disjointed with the primary SFP, and a backup service function instance (SFI) is prepared for each service function. For a failure event, the first local repair stage is examined by means of the preconfigured backup SFI. If the backup SFI is not available and/or any link is failed, the second end-to-end repair stage is triggered by replacing the primary SFP with the secondary SFP. Simulation results demonstrate that the proposed failover mechanism can reduce the recovery time by 50%-75% compared to the conventional approach.

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业务功能链中高可用性的两阶段故障转移机制

SFC (Service function chains)是指将特定的网络流通过一组有序的业务功能进行处理。为了在SFC中提供高可用性，我们提出了一种两阶段的故障转移机制，在该机制中，预先计算出与主SFP最大程度分离的辅助业务功能路径(secondary service function path, SFP)，并为每个业务功能准备一个备份业务功能实例(backup service function instance, SFI)。对于故障事件，通过预先配置的备份SFI检查第一个本地修复阶段。如果备份SFI不可用和/或任何链路失败，则通过用辅助SFP替换主SFP来触发第二个端到端修复阶段。仿真结果表明，所提出的故障转移机制比传统的故障转移机制可减少50% ~ 75%的恢复时间。

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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来源期刊

Journal of Internet Technology COMPUTER SCIENCE, INFORMATION SYSTEMS-TELECOMMUNICATIONS

CiteScore

3.20

自引率

18.80%

发文量

112

审稿时长

13.8 months

期刊介绍： The Journal of Internet Technology accepts original technical articles in all disciplines of Internet Technology & Applications. Manuscripts are submitted for review with the understanding that they have not been published elsewhere. Topics of interest to JIT include but not limited to: Broadband Networks Electronic service systems (Internet, Intranet, Extranet, E-Commerce, E-Business) Network Management Network Operating System (NOS) Intelligent systems engineering Government or Staff Jobs Computerization National Information Policy Multimedia systems Network Behavior Modeling Wireless/Satellite Communication Digital Library Distance Learning Internet/WWW Applications Telecommunication Networks Security in Networks and Systems Cloud Computing Internet of Things (IoT) IPv6 related topics are especially welcome.