February 16, 2017

Caesar: A content Router for High-speed Forwarding on content Names

  • Boislaigue R.
  • Laufer R.
  • Leonardo Liguaglossa
  • Perino D.
  • Varvello M.

Forwarding on name-based identifiers is receving increasing attention as a growing number of in-network services are built on location-independent identifiers, e.g., DNS and CDNs. In addition, Information Centric Networking (ICN) is proposing to provide name-based forwarding as a basic communication primitive. In this paper we present Caesar, a router design for high-speed forwarding on hierarchical name-based identifiers. Caesar is based on Longest Prefix Matching using Bloom Filters, and can be deployed over existing network devices without the need of hardware upgrade. Our experiments on a small scale router prototype show the design can sustain up to 9 Mpps, with 10M prefixes per line-card, outperforming previously proposed solutions. We also propose two extensions to the basic design: distributed processing over multiple line-cards to increase the amount of state Caesar can store, and lookup offload to GPU to increase the rate of operations sustained. We show those enhancements allow to linearly increase the amount of prefixes stored on the router, i.e.,50M prefixes over 5 line-cards and to sustain an order of magnitude more incoming packets, i.e.,100 MPPS.

View Original Article

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 ...