An SDN based fast rerouting mechanism for elephant flows in DCN

Data Center Networks (DCNs) should provide low latency and high throughput to meet users' demands. However the coexistence of mice and elephant flows may jeopardize achieving both performance objectives simultaneously. Existing load agnostic routing techniques work well for mice flows but make...

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Bibliographic Details
Published in2017 8th IEEE International Conference on Software Engineering and Service Science (ICSESS) pp. 363 - 366
Main Authors Zang, Weifei, Jin, Zijin, Lan, Julong
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2017
Subjects
Bandwidth
Communication system traffic
Computer networks
data center network
MOPSO
multipath routing
Routing
SDN
Segment Routing
Switches
Throughput
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Summary:Data Center Networks (DCNs) should provide low latency and high throughput to meet users' demands. However the coexistence of mice and elephant flows may jeopardize achieving both performance objectives simultaneously. Existing load agnostic routing techniques work well for mice flows but make elephant flows collide on the same output port, creating an avoidable bottleneck. In this paper, we present an SDN based Fast Rerouting Mechanism (SFRM) for rescheduling elephant flows in a load-aware manner. An elephant flow selecting module is added into the controller to reschedule elephant flows selectively and reroutes a few elephant flows by Segment Routing (SR) technique. Simulations show that SFRM improves the network throughput and reduces the Flow Completion Time (FCT) significantly.
ISSN:2327-0594
DOI:10.1109/ICSESS.2017.8342933