A Latency-Driven Availability Assessment for Multi-Tenant Service Chains
نویسندگان
چکیده
Nowadays, most telecommunication services adhere to the Service Function Chain (SFC) paradigm, where network functions are implemented via software. In particular, container virtualization is becoming a popular approach deploy and enable resource slicing among several tenants. The resulting infrastructure complex system composed by huge amount of containers implementing different SFC functionalities, along with tenants sharing same chain. complexity such scenario lead us evaluate two critical metrics: steady-state availability (the probability that functioning in long runs) latency time between service request pertinent response). Consequently, we propose latency-driven assessment for multi-tenant chains Containerized Network Functions (CNFs). We adopt multi-state model single CNFs queueing formalism characterize latency. To efficiently compute availability, develop modified version Multidimensional Universal Generating (MUGF) technique. Finally, solve an optimization problem minimize cost under constraint. As relevant example SFC, consider containerized IP Multimedia Subsystem, whose parameters have been estimated through fault injection techniques load tests.
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ژورنال
عنوان ژورنال: IEEE Transactions on Services Computing
سال: 2023
ISSN: ['1939-1374', '2372-0204']
DOI: https://doi.org/10.1109/tsc.2022.3183938