IMDEA Networks Institute Publications Repository

ESPRES: Transparent SDN Update Scheduling

Perešíni, Peter and Kuźniar, Maciej and Canini, Marco and Kostic, Dejan (2014) ESPRES: Transparent SDN Update Scheduling. In: The 3rd ACM SIGCOMM Workshop on Hot Topics in Software Defined Networking (HotSDN 2014), ACM SIGCOMM 2014, 22 August 2014, Chicago, Illinois, USA.

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Abstract

Network forwarding state undergoes frequent changes, in batches of forwarding rule modi�cations at multiple switches. Installing or modifying a large number of rules is time consuming given the performance limits of current programmable switches, which are also due to economical factors in addition to technological ones. In this paper, we observe that a large network-state update typically consists of a set of sub-updates that are independent of one another w.r.t. the traffic they affect, and hence sub-updates can be installed in parallel, in any order. Leveraging this observation, we treat update installation as a scheduling problem and design ESPRES, a runtime mechanism that rate-limits and reorders updates to fully utilize processing capacities of switches without overloading them. Our early results show that compared to using no scheduler, our schemes yield 2.17-3.88 times quicker sub-update completion time for 20th percentile of sub-updates and 1.27-1.57 times quicker for 50th percentile.

Item Type: Conference or Workshop Papers (Paper)
Uncontrolled Keywords: Software-Defined Networking; Performance; Update scheduling
Subjects: UNSPECIFIED
Divisions: UNSPECIFIED
Depositing User: Rebeca De Miguel
Date Deposited: 07 Aug 2014 10:21
Last Modified: 15 Dec 2016 15:03
URI: http://eprints.networks.imdea.org/id/eprint/864

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