Nimble: A Platform for Efficient and Flexible Data Plane Services in Data Centers

  • Chang H.
  • Lakshman T.
  • Mukherjee S.
  • Stiliadis D.
  • Wang L.

High throughput packet processing using general purpose CPUs enables deployment of software switches and increasingly heavy duty data plane services at end servers. This paper presents Nimble, a scale-out, per-tenant service platform for dynamic deployment of data plane services in data center networks. It uses centralized control to deploy and manage various tenant-specific data plane services within software switches running on commodity end servers. We describe the architecture of Nimble and its implementation. We extend an existing software switch to leverage hardware offload of modern NICs to create large packets and switch them in their entirety using the software switch. This boosts up the performance of the software switch (without using extra processing core), and accelerates the packet processing of data plane service chaining. Using our software switch and IDS service implementation, we demonstrate the advantages of the architecture. For example, our NICaccelerated switch can save at least 50% of kernel interrupt processing, which would otherwise not be available. It can also accelerate the IDS throughput by a factor of 1.2-8 for different types of traffic, while its centralized control plane gracefully scales up and down the IDS service according to tenant workload.

Recent Publications

August 09, 2017

A Cloud Native Approach to 5G Network Slicing

  • Francini A.
  • Miller R.
  • Sharma S.

5G networks will have to support a set of very diverse and often extreme requirements. Network slicing offers an effective way to unlock the full potential of 5G networks and meet those requirements on a shared network infrastructure. This paper presents a cloud native approach to network slicing. The cloud ...

August 01, 2017

Modeling and simulation of RSOA with a dual-electrode configuration

  • De Valicourt G.
  • Liu Z.
  • Violas M.
  • Wang H.
  • Wu Q.

Based on the physical model of a bulk reflective semiconductor optical amplifier (RSOA) used as a modulator in radio over fiber (RoF) links, the distributions of carrier density, signal photon density, and amplified spontaneous emission photon density are demonstrated. One of limits in the use of RSOA is the lower ...

July 12, 2017

PrivApprox: Privacy-Preserving Stream Analytics

  • Chen R.
  • Christof Fetzer
  • Le D.
  • Martin Beck
  • Pramod Bhatotia
  • Thorsten Strufe

How to preserve users' privacy while supporting high-utility analytics for low-latency stream processing? To answer this question: we describe the design, implementation and evaluation of PRIVAPPROX, a data analytics system for privacy-preserving stream processing. PRIVAPPROX provides three properties: (i) Privacy: zero-knowledge privacy (ezk) guarantees for users, a privacy bound tighter ...