Open AccessProceedings Article
OFRewind: enabling record and replay troubleshooting for networks
Andreas Wundsam,Dan Levin,Srini Seetharaman,Anja Feldmann +3 more
- pp 29-29
TLDR
The design of OFRewind is presented, which enables scalable, multi-granularity, temporally consistent recording and coordinated replay in a network, with fine-grained, dynamic, centrally orchestrated control over both record and replay.Abstract:
Debugging operational networks can be a daunting task, due to their size, distributed state, and the presence of black box components such as commercial routers and switches, which are poorly instrumentable and only coarsely configurable The debugging tool set available to administrators is limited, and provides only aggregated statistics (SNMP), sampled data (NetFlow/sFlow), or local measurements on single hosts (tcpdump) In this paper, we leverage split forwarding architectures such as OpenFlow to add record and replay debugging capabilities to networks - a powerful, yet currently lacking approach We present the design of OFRewind, which enables scalable, multi-granularity, temporally consistent recording and coordinated replay in a network, with fine-grained, dynamic, centrally orchestrated control over both record and replay Thus, OFRewind helps operators to reproduce software errors, identify datapath limitations, or locate configuration errorsread more
Citations
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Software-Defined Networking: A Comprehensive Survey
Diego Kreutz,Fernando M. V. Ramos,Paulo Veríssimo,Christian Esteve Rothenberg,Siamak Azodolmolky,Steve Uhlig +5 more
TL;DR: This paper presents an in-depth analysis of the hardware infrastructure, southbound and northbound application programming interfaces (APIs), network virtualization layers, network operating systems (SDN controllers), network programming languages, and network applications, and presents the key building blocks of an SDN infrastructure using a bottom-up, layered approach.
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A Survey of Software-Defined Networking: Past, Present, and Future of Programmable Networks
TL;DR: The SDN architecture and the OpenFlow standard in particular are presented, current alternatives for implementation and testing of SDN-based protocols and services are discussed, current and future SDN applications are examined, and promising research directions based on the SDN paradigm are explored.
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Software-Defined Networking: A Comprehensive Survey
Diego Kreutz,Fernando M. V. Ramos,Paulo Veríssimo,Christian Esteve Rothenberg,Siamak Azodolmolky,Steve Uhlig +5 more
TL;DR: Software-Defined Networking (SDN) as discussed by the authors is an emerging paradigm that promises to change this state of affairs, by breaking vertical integration, separating the network's control logic from the underlying routers and switches, promoting (logical) centralization of network control, and introducing the ability to program the network.
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A Survey on Software-Defined Networking
TL;DR: A generally accepted definition for SDN is presented, including decoupling the control plane from the data plane and providing programmability for network application development, and its three-layer architecture is dwelled on, including an infrastructure layer, a control layer, and an application layer.
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A Survey on Software-Defined Network and OpenFlow: From Concept to Implementation
TL;DR: A comprehensive survey of the important topics in SDN/OpenFlow implementation, including the basic concept, applications, language abstraction, controller, virtualization, quality of service, security, and its integration with wireless and optical networks is conducted.
References
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Time, clocks, and the ordering of events in a distributed system
TL;DR: In this article, the concept of one event happening before another in a distributed system is examined, and a distributed algorithm is given for synchronizing a system of logical clocks which can be used to totally order the events.
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X-trace: a pervasive network tracing framework
TL;DR: This paper proposes X-Trace, a tracing framework that provides such a comprehensive view of service behavior for systems that adopt it, and discusses how it works in three deployed scenarios: DNS resolution, a three-tiered photo-hosting website, and a service accessed through an overlay network.