상세정보
학술지
A Two-Stage Failover Mechanism for High Availability in Service Function Chaining
- 저자
- 백호성, 고한얼, 박광우, 백상헌, 곽지영
- 발행일
- 201801
- 출처
- Journal of Internet Technology, v.19 no.1, pp.229-236
- ISSN
- 1607-9264
- 출판사
- National Dong Hwa University
- 협약과제
- 16MH1700, (통합)스마트 네트워킹 핵심 기술 개발, 양선희
- 초록
- 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.
- KSP 제안 키워드
- Backup service, End to End(E2E), High availability, Network flow, Service function path, Two-Stage, local repair, ordered set, recovery time, service function chaining, simulation results