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