Low-Overhead Packet Loss Diagnosis for Virtual Private Clouds using P4-Programmable NICs

Aali Bagi, Soroush

Low-Overhead Packet Loss Diagnosis for Virtual Private Clouds using P4-Programmable NICs

dc.contributor.advisor	Ghaderi, Majid
dc.contributor.author	Aali Bagi, Soroush
dc.contributor.committeemember	Maleki, Farhad
dc.contributor.committeemember	Fapojuwo, Abraham Olatunji
dc.date	2023-06
dc.date.accessioned	2023-05-04T20:57:14Z
dc.date.available	2023-05-04T20:57:14Z
dc.date.issued	2023-04-28
dc.description.abstract	The virtual private cloud, a logical division into tenants of a service provider's multi-tenant multi-cloud architecture, has become a major trend in the cloud computing industry because of its cost-effectiveness. Effective monitoring systems are critical for cloud tenants to identify and troubleshoot problems that cause negative impact on the reliability and availability of their services in the virtualized cloud infrastructure. However, the virtualized and complex nature of cloud infrastructure limits tenants' ability to pinpoint problems that result in performance degradation, such as packet loss, within the cloud environment. Current monitoring systems are either designed for the physical network or are not adequate to be able to detect the specific cause of packet losses in the physical network. Besides, there are few virtual network monitoring systems suitable for tenants that impose an insignificant overhead. This thesis presents a Packet Loss Diagnosis (PLD) system, which is a specific monitoring service designed to detect packet losses on virtual networks. It notifies virtual private cloud tenants with diagnostic information for troubleshooting. This comprehensive mechanism is based on the modern capabilities of P4 data plane programmable NICs and has a limited footprint in the network. Virtual networks at cloud-scale pose considerable challenges in achieving this goal. We differentiate between packet losses in virtual and physical networks to address these challenges. As for the former, we support tenants with comprehensive information that allows them to locate and resolve their problems on their own. In relation to the latter, we provide high-level information respecting service isolation and abstraction. Furthermore, PLD is designed to meet the requirements of a monitoring system designed for multi-tenant clouds at large scales. To prove the viability of the proposed scheme, we implemented it in P4 as well as investigated its performance through extensive experiments and Mininet simulation. The results of our study demonstrate that the proposed scheme can detect all packet losses reliably and can notify tenants in real-time of the occurrence of packet losses while imposing a minimal overhead that is proportional to the number of packet losses.
dc.identifier.citation	Aali Bagi, S. (2023). Low-overhead Packet Loss Diagnosis for virtual private clouds using P4-programmable NICs (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.
dc.identifier.uri	http://hdl.handle.net/1880/116153
dc.identifier.uri	https://dx.doi.org/10.11575/PRISM/dspace/40998
dc.language.iso	en
dc.publisher.faculty	Graduate Studies
dc.publisher.institution	University of Calgary
dc.rights	University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subject	Computer Networks
dc.subject	Virtual networks
dc.subject	Datacenter Networks
dc.subject	Programmable Dataplane
dc.subject	Monitoring Systems
dc.subject.classification	Education--Sciences
dc.title	Low-Overhead Packet Loss Diagnosis for Virtual Private Clouds using P4-Programmable NICs
dc.type	master thesis
thesis.degree.discipline	Computer Science
thesis.degree.grantor	University of Calgary
thesis.degree.name	Master of Science (MSc)
ucalgary.thesis.accesssetbystudent	I do not require a thesis withhold – my thesis will have open access and can be viewed and downloaded publicly as soon as possible.