IGP-as-a-backup for robust SDN networks

Tilmans, Olivier; Vissicchio, Stefano

doi:10.1109/cnsm.2014.7014149

Cited by 28 publications

(19 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our proposal can be seen as an integrated hybrid SDN architecture according to the classification in [61]. As such, it enriches previous efforts in the area (e.g., [6,12,30,62]) with an original architecture based on segment routing and a multipurpose declarative controller. Note that DEFO can be used as a translator from abstract goals to forwarding paths in protocols different from SR (see, e.g., §8.1).…”

Section: Related Workmentioning

confidence: 66%

See 1 more Smart Citation

A Declarative and Expressive Approach to Control Forwarding Paths in Carrier-Grade Networks

Hartert

Vissicchio

Schaus

et al. 2015

Proceedings of the 2015 ACM Conference on Special Interest Group on Data Communication

Self Cite

109

View full text Add to dashboard Cite

SDN simplifies network management by relying on declarativity (high-level interface) and expressiveness (network flexibility). We propose a solution to support those features while preserving high robustness and scalability as needed in carrier-grade networks. Our solution is based on (i) a two-layer architecture separating connectivity and optimization tasks; and (ii) a centralized optimizer called DEFO, which translates high-level goals expressed almost in natural language into compliant network configurations. Our evaluation on real and synthetic topologies shows that DEFO improves the state of the art by (i) achieving better trade-offs for classic goals covered by previous works, (ii) supporting a larger set of goals (refined traffic engineering and service chaining), and (iii) optimizing large ISP networks in few seconds. We also quantify the gains of our implementation, running Segment Routing on top of IS-IS, over possible alternatives (RSVP-TE and OpenFlow). ABSTRACT SDN simplifies network management by relying on declarativity (high-level interface) and expressiveness (network flexibility). We propose a solution to support those features while preserving high robustness and scalability as needed in carrier-grade networks. Our solution is based on (i) a two-layer architecture separating connectivity and optimization tasks; and (ii) a centralized optimizer called DEFO, which translates high-level goals expressed almost in natural language into compliant network configurations. Our evaluation on real and synthetic topologies shows that DEFO improves the state of the art by (i) achieving better trade-offs for classic goals covered by previous works, (ii) supporting a larger set of goals (refined traffic engineering and service chaining), and (iii) optimizing large ISP networks in few seconds. We also quantify the gains of our implementation, running Segment Routing on top of IS-IS, over possible alternatives (RSVP-TE and OpenFlow).

show abstract

Section: Related Workmentioning

confidence: 66%

“…We follow the recent trend to separate traffic engineering and connectivity tasks [6,8,12]. However, in contrast with previous proposals, our architecture explicitly separates two layers.…”

Section: Introductionmentioning

confidence: 99%

A Declarative and Expressive Approach to Control Forwarding Paths in Carrier-Grade Networks

Hartert

Vissicchio

Schaus

et al. 2015

Proceedings of the 2015 ACM Conference on Special Interest Group on Data Communication

Self Cite

109

View full text Add to dashboard Cite

show abstract

“…The approach by Tilmans and Vissicchio [27] is somewhat different, but does include a mechanism for alternate paths to be found (eventually). They propose a hybrid approach in which SDN takes care of the overall network configuration, but the controller also instructs the "local agents" of the nodes to run a link-state IGP protocol (like OSPF or IS-IS).…”

Section: A Data Plane Reliabilitymentioning

confidence: 99%

Technology-related disasters: A survey towards disaster-resilient Software Defined Networks

Machuca

Secci

Vizarreta

et al. 2016

2016 8th International Workshop on Resilient Networks Design and Modeling (RNDM)

View full text Add to dashboard Cite

Abstract-Resilience against disaster scenarios is essential to network operators, not only because of the potential economic impact of a disaster but also because communication networks form the basis of crisis management. COST RECODIS aims at studying measures, rules, techniques and prediction mechanisms for different disaster scenarios. This paper gives an overview of different solutions in the context of technology-related disasters. After a general overview, the paper focuses on resilient Software Defined Networks.

show abstract

“…First, hybrid SDN networks, running both SDN and traditional routing protocols and enabled by hybrid routers [1], can (i) improve routing flexibility with respect to pure IGP networks [7], (ii) enable deployment of advanced network capabilities (like network function virtualization) [8], (iii) combine the flexibility of SDN with the scalability and robustness of IGPs [9], and (iv) enable a smooth migration to a pure SDN deployment [10]. Second, coexisting SDN control-planes capture the case of multiple uncoordinated controllers managing the same devices.…”

Section: Introductionmentioning

confidence: 99%

On the co-existence of distributed and centralized routing control-planes

Vissicchio

Cittadini

Bonaventure

et al. 2015

2015 IEEE Conference on Computer Communications (INFOCOM)

Self Cite

View full text Add to dashboard Cite

Abstract-Network operators can and do deploy multiple routing control-planes, e.g., by running different protocols or instances of the same protocol. With the rise of SDN, multiple control-planes are likely to become even more popular, e.g., to enable hybrid SDN or multi-controller deployments. Unfortunately, previous works do not apply to arbitrary combinations of centralized and distributed control-planes.In this paper, we develop a general theory for coexisting control-planes. We provide a novel, exhaustive classification of existing and future control-planes (e.g., OSPF, EIGRP, and OpenFlow) based on fundamental control-plane properties that we identify. Our properties are general enough to study centralized and distributed control-planes under a common framework. We show that multiple uncoordinated control-planes can cause forwarding anomalies whose type solely depends on the identified properties. To show the wide applicability of our framework, we leverage our theoretical insight to (i) provide sufficient conditions to avoid anomalies, (ii) propose configuration guidelines, and (iii) define a provably-safe procedure for reconfigurations from any (combination of) control-planes to any other. Finally, we discuss prominent consequences of our findings on the deployment of new paradigms (notably, SDN) and previous research works.

show abstract

IGP-as-a-backup for robust SDN networks

Cited by 28 publications

References 23 publications

A Declarative and Expressive Approach to Control Forwarding Paths in Carrier-Grade Networks

A Declarative and Expressive Approach to Control Forwarding Paths in Carrier-Grade Networks

Technology-related disasters: A survey towards disaster-resilient Software Defined Networks

On the co-existence of distributed and centralized routing control-planes

Contact Info

Product

Resources

About