The case for separating routing from routers

Feamster, Nick; Balakrishnan, Hari; Rexford, Jennifer; Shaikh, Aman; Merwe, Jacobus Van der

doi:10.1145/1016707.1016709

Cited by 217 publications

(160 citation statements)

References 36 publications

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“…Note that we are not the first to propose such split. This ideas has been previously recommended to aid routing scalability [37] and is nowadays central to current SDN research [38].…”

Section: Architecture Overviewmentioning

confidence: 99%

Lcast: Software-defined inter-domain multicast

et al. 2014

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Traditionally, efficient inter-domain data delivery may be implemented either as a network or application layer multicast service. However, while the former has seen little uptake due to prohibitive deployment costs the latter is widely used today, but often without a minimum guaranteed performance. In this paper we present Lcast, a network-layer single-source multicast framework designed to merge the robustness and efficiency of IP multicast with the configurability and low deployment cost of application-layer overlays. The architecture involves no end-host changes and only requires the upgrading of a small set of routers to support the Locator/ID Separation Protocol (LISP), an incrementally deployable enhancement to the current global routing infrastructure. Content distribution over the Internet's core is done by means of a router overlay while within domains, end-hosts interface with Lcast using conventional multicast protocols. The overlay's scalability and topological configurability is sustained by logically centralizing group management. We illustrate the versatility of our solution by designing and assessing the scalability and performance of three management strategies for low latency content distribution. Our analysis is based on large scale simulations supported by realistic user behavior and Internet-like network topologies. The results show Lcast's low management overhead and ability to optimize delivery to meet various operational constraints. Notably, we find that it can deliver traffic with latencies close to unicast ones, independent of overlay size.

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“…Note that we are not the first to propose such split. This ideas has been previously recommended to aid routing scalability [37] and is nowadays central to current SDN research [38].…”

Section: Architecture Overviewmentioning

confidence: 99%

Lcast: Software-defined inter-domain multicast

et al. 2014

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“…We are not the first to claim that control and data separation can enhance routing performance. RCP [7] is proposed to improve the flexibility of routing selection as well as facilitate configuration. 4D [8] is an innovative routing architecture which is consisted of Decision plane, Dissemination plane, Discovery plane, Data plane.…”

Section: Background and Related Workmentioning

confidence: 99%

Virtual Area Routing: a Scalable Intra-Domain Routing Scheme

Zhao

et al. 2011

AEF

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Abstract. As a distributed link state protocol, OSPF shows poor scalability when dealing with intra-domain routing in large networks. In this paper we present a new routing scheme called Virtual Area Routing (VAR) aimed to overcome the scalability problems of OSPF. The control plane is separated from data plane and is undertaken by dedicated elements in VAR. We show that VAR can simplify network configuration and management as well as avoid unnecessary route computation. Finally we conduct experiments in real topology and the result shows VAR can reduce control overhead and improve network performance.

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“…Therefore, an ISP can change how the "black-box" works without modifying the protocol or requiring cooperation from other ASes. For example, previous work has shown how to move control-plane functionality to a small set of servers that select BGP routes on behalf of the routers [13,7,35,36]. In the rest of the paper, we show how to design a routing control platform that enables an ISP, acting alone, to realize many useful routing policies that are infeasible today.…”

Section: E a Single Isp Can Safely And Effectively Act Alonementioning

confidence: 99%

Design for configurability: rethinking interdomain routing policies from the ground up

Wang

Avramopoulos

Rexford

2009

IEEE J. Select. Areas Commun.

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Abstract-Giving ISPs more fine-grain control over interdomain routing policies would help them better manage their networks and offer value-added services to their customers. Unfortunately, the current BGP route-selection process imposes inherent restrictions on the policies an ISP can configure, making many useful policies infeasible. In this paper, we present Morpheus, a routing control platform that is designed for configurability. Morpheus enables a single ISP to realize a much broader range of routing policies without requiring changes to the underlying routers or collaboration with other domains. Morpheus allows network operators to: (1) make flexible trade-offs between policy objectives through a weighted-sum based decision process, (2) realize customer-specific policies by supporting multiple routeselection processes in parallel, and allowing customers to influence the decision processes, and (3) configure the decision processes through a simple and intuitive configuration interface based on the Analytic Hierarchy Process, a decision-theoretic technique for balancing conflicting objectives. We also present the design, implementation, and evaluation of Morpheus as an extension to the XORP software router.

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The case for separating routing from routers

Cited by 217 publications

References 36 publications

Lcast: Software-defined inter-domain multicast

Lcast: Software-defined inter-domain multicast

Virtual Area Routing: a Scalable Intra-Domain Routing Scheme

Design for configurability: rethinking interdomain routing policies from the ground up

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