Comparative Performability Assessment of SFCs: The Case of Containerized IP Multimedia Subsystem

Mauro, Mario Di; Galatro, Giovanni; Longo, Maurizio; Postiglione, F.; Tambasco, Marco

doi:10.1109/tnsm.2020.3044232

Cited by 18 publications

(6 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another variant of SPN named Stochastic Reward Net (SRN) is adopted in [28], where a comparative availability analysis among different containerized IMS deployments (homogeneous, heterogeneous, co-located) allows pinpointing the optimal IMS redundant configuration in terms of availability/cost trade-off. SRNs have been profitably adopted also in [29], where the probabilistic behavior of some cloud components has been modeled.…”

Section: Related Workmentioning

confidence: 99%

Performance and Availability Challenges in Designing Resilient 5G Architectures

Simone,

Mauro,

Natella

et al. 2024

IEEE Trans. Netw. Serv. Manage.

View full text Add to dashboard Cite

This work proposes a stochastic characterization of resilient 5G architectures, where attributes such as performance and availability play a crucial role. As regards performance, we focus on the delay associated with the Packet Data Unit session establishment, a 5G procedure recognized as critical for its impact on the Quality of Service and Experience of end-users. To formally characterize this aspect, we employ the non-productform queueing networks framework where: 𝑖) main nodes of a 5G architecture have been realistically modeled as 𝐺/𝐺/𝑚 queues which do not admit analytical solutions; 𝑖𝑖) the decomposition method useful to catch subtle quantities involved in the chain of 5G interconnected nodes has been conveniently customized. The results of performance characterization constitute the input of the availability modeling, where we design a hierarchical scheme to characterize the probabilistic failure/repair behavior of 5G nodes combining two formalisms: 𝑖) the Reliability Block Diagrams, useful to capture the high-level interconnections between nodes; 𝑖𝑖) the Stochastic Reward Networks to model the internal structure of each node. The final result is an optimal resilient 5G setting that fulfills both a performance constraint (e.g., a temporal threshold) and an availability constraint (e.g., the so-called five nines) at the minimum cost, namely, with the smallest number of redundant elements. The theoretical part is complemented by an empirical assessment carried out through Open5GS, a 5G testbed that we have deployed to realistically estimate main performance and availability metrics.

show abstract

Section: Related Workmentioning

confidence: 99%

Performance and Availability Challenges in Designing Resilient 5G Architectures

Simone,

Mauro,

Natella

et al. 2024

IEEE Trans. Netw. Serv. Manage.

View full text Add to dashboard Cite

show abstract

“…For example, Petri-based formalisms provide a compact way to model the availability of chained structures through the analysis of the state changes. Among the works which exploit such a formalism we find: [32], including a VNF migration strategy where the underlying SFC has been modeled according to the Petri formalism; stochastic Petri networks (SPNs) have been exploited in [33] to set an automatic method useful to evaluate the availability of SFCs; authors in [34] propose a comparative analysis of different SFC configurations exploiting the stochastic reward networks (SRNs) formalism, a variant of classic stochastic Petri networks with a reward function; SRN have been used also in [35] to characterize from an availability view point homogeneous and heterogeneous deployments of SFCs; stochastic activity networks (SANs) have been adopted in [36] and [37] to assess the availability of an end-to-end NFV-aware network service; generalized stochastic Petri networks (GSPNs) have been employed in [38] to model availability problems in data centers in charge of managing SFCs.…”

Section: B Availability Issuesmentioning

confidence: 99%

Multi-Provider IMS Infrastructure With Controlled Redundancy: A Performability Evaluation

Simone¹,

Mauro

Longo

et al. 2023

IEEE Trans. Netw. Serv. Manage.

Self Cite

View full text Add to dashboard Cite

In modern telecommunication networks, services are provided through Service Function Chains (SFC), where network resources are implemented by leveraging virtualization and containerization technologies. In particular, the possibility of easily adding or removing network resources has prompted service providers to redefine some concepts including performance and availability. In line with this new trend, we propose a performability study of a multi-provider containerized IP Multimedia Subsystem (cIMS), an SFC-like infrastructure used in the core part of 4G/5G networks to handle multimedia sessions. On the one hand, performance issues are tackled by modeling each cIMS node in terms of a 𝐺/𝐺/𝑚 queueing system to derive the Call Setup Delay (CSD), a performance metric related to the user-end experience in multimedia communications. On the other hand, availability issues are addressed through the Multi-State System (MSS) formalism, to take into account different performance rates of the system. Then, we devise an algorithm called PE-MUGF (Performability Evaluation through Multidimensional Universal Generating Function) to identify the minimum-redundancy cIMS configuration which meets given performance and availability targets at the same time. Finally, an extensive experimental analysis based on Clearwater, a containerized IMS testbed, allows us to estimate most of system parameters whose robustness is evaluated through a sensitivity analysis.

show abstract

“…However, numerous new constraints on resource allocation and network management will be required if the virtualization layer is considered. In assessment, methods such as Reliability block diagram [10], Markov chain [11], [12] are addressed. These methods fail to model a complex telecommunication network by considering infrastructure, virtualization, network layers, and their dependencies.…”

Section: Related Workmentioning

confidence: 99%

Petri Net-Based Model for 5G and Beyond Networks Resilience Evaluation

Decocq

Barros

et al. 2022

2022 25th Conference on Innovation in Clouds, Internet and Networks (ICIN)

View full text Add to dashboard Cite

The promise of telecommunication networks to deliver more demanding and complex applications requires them to become more flexible and efficient. To achieve better performance, telecommunication networks adopt technologies such as NFV (Network Function Virtualization). However, this evolution also brings more potential risks to the telecommunication network. Reliability and resilience are becoming critical for service delivery in the networks. To answer to service requirements of high level availability and reliability, a model with a global view of infrastructure, virtual network elements, and network layer structure is required. Toward this end, this paper presents a Petri Net method to model 5G and beyond telecommunication networks. We introduce an extended Petri Net to model physical infrastructure, virtual infrastructure, network services, their behaviors, and dependencies. We present a simulation result on network availability estimation. This result shows the potential of the Petri Net-based model to be applied to a complex telecommunication system resilience assessment.

show abstract

Comparative Performability Assessment of SFCs: The Case of Containerized IP Multimedia Subsystem

Cited by 18 publications

References 30 publications

Performance and Availability Challenges in Designing Resilient 5G Architectures

Performance and Availability Challenges in Designing Resilient 5G Architectures

Multi-Provider IMS Infrastructure With Controlled Redundancy: A Performability Evaluation

Petri Net-Based Model for 5G and Beyond Networks Resilience Evaluation

Contact Info

Product

Resources

About