Availability-Guaranteed Service Function Chain Provisioning with Optional Shared Backups
Paper i proceeding, 2020

The dynamic provisioning of Service Function Chain (SFC) using Virtual Network Functions (VNFs) is a challenging problem, especially for availability-constrained services. The provisioning of backup resources is often used to ensure that availability requirements are fulfilled. However, the assignment of backup resources should be carefully designed to avoid resource inefficiencies as much as possible.This paper proposes the Optional Backup with Shared Path and Shared Function (OBSPSF) strategy, which aims at improving resource efficiency while fulfilling the availability requirements of SFC requests. The strategy uses optional backup provisioning to ensure that backup resources are assigned only when strictly needed (i.e., when the SFC alone does not meet the availability constraint). Moreover, OBSPSF encourages backup sharing (among both connectivity and backup VNFs) to reduce the backup resource overhead. Results show that the strategy can accommodate orders-of-magnitude more services than benchmark heuristics from the literature.

Provisioning

Availability

Service Function Chaining

Virtualized Network Function

Shared Protection

Författare

Igor M. Araújo

Universidade Federal do Para

Carlos Natalino Da Silva

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Optiska nätverk

Hao Chen

Kungliga Tekniska Högskolan (KTH)

Marilet De Andrade

Kungliga Tekniska Högskolan (KTH)

Diego L. Cardoso

Universidade Federal do Para

Paolo Monti

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Optiska nätverk

2020 16th International Conference on the Design of Reliable Communication Networks, DRCN 2020

9089344

Ämneskategorier

Kommunikationssystem

DOI

10.1109/DRCN48652.2020.1570611128

Mer information

Senast uppdaterat

2020-08-24