Mismatch between Apps & Data Centre Network
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• Many proposals for software-based routers and switches – e.g. RouteBricks , ServerSwitch, PacketShader, SideCar, NetMap,… • Replace traditional, application-agnostic network services • e.g. IPv4 forwarding, deep packet inspection, firewalls • Why don’t use them to implement application- Mismatch between Apps & Data Centre Network • Oversubscription: Fat-tree [SIGCOMM’08], VL2 [SIGCOMM’09], … • Path collision: Hedera [NSDI’10], MPTCP [SIGCOMM’11], SPAIN [NSDI’10], … • TCP Incast[CoNEXT’10]• Traffic prioritisation[SIGCOMM’11], D2TCP [SIGCOMM’11], … • Fair sharing: Seawall [NSDI’11], FairCloud [SIGCOMM’12], … 1 Treating symptoms rather than cause... • Abstracti on • Real ity Peter Pietzuch (Imperial College London)
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Mismatch between Apps & Data Centre Network. Reality. Abstraction. Treating symptoms rather than cause. Many proposals for software-based routers and switches e.g. RouteBricks , ServerSwitch , PacketShader , SideCar , NetMap ,… - PowerPoint PPT Presentation
Transcript of Mismatch between Apps & Data Centre Network
• Many proposals for software-based routers and switches
– e.g. RouteBricks , ServerSwitch, PacketShader, SideCar, NetMap,…
• Replace traditional, application-agnostic network services
• e.g. IPv4 forwarding, deep packet inspection, firewalls• Why don’t use them to implement application-specific
services?
Mismatch between Apps & Data Centre Network
• Oversubscription: Fat-tree [SIGCOMM’08], VL2 [SIGCOMM’09], …• Path collision: Hedera [NSDI’10], MPTCP [SIGCOMM’11], SPAIN [NSDI’10], …• TCP Incast: DCTCP [SIGCOMM’10], ICTCP [CoNEXT’10], …• Traffic prioritisation: Orchestra [SIGCOMM’11], D2TCP [SIGCOMM’11], …• Fair sharing: Seawall [NSDI’11], FairCloud [SIGCOMM’12], …
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Treating symptoms rather than cause...
• Abstraction
• Reality
Peter Pietzuch (Imperial College London)
EPSRC NaaS Project: Network-as-a-Service
• Switches augmented with processing capabilities (NaaS box)
– Applications deploy processing functions on each device– Permits applications to adapt network flows based on
requirements• Initial use case: on-path data aggregation for Hadoop
– Other use cases: content-based routing, in-network caching, ...• Research challenges: performance, isolation,
programming model
2Peter Pietzuch (Imperial College London)
