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篇名 |
A Two-Stage Failover Mechanism for High Availability in Service Function Chaining
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並列篇名 | A Two-Stage Failover Mechanism for High Availability in Service Function Chaining |
作者 | Hosung Baek、Haneul Ko、Gwangwoo Park、Sangheon Pack、Jiyoung Kwak |
英文摘要 | 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. |
起訖頁 | 229-236 |
關鍵詞 | Service function chaining (SFC)、service function (SF)、service node (SN)、backup、high availability (HA) |
刊名 | 網際網路技術學刊 |
期數 | 201801 (19:1期) |
出版單位 | 台灣學術網路管理委員會 |
DOI |
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