Network Systems Lab

    Dept. of Computer Sciences
    Purdue University


Overview

The Network Systems Lab (NSL) houses people and research equipment related to the study of networks and distributed systems. Specific research areas include self-similar traffic control, real-time/multimedia traffic control, Scalable Internet quality of service provision architectures, distributed operating systems, fault-tolerance in distributed systems, and ATM network security. The research projects are supported by grants from NSF (ANI-9714707, ANI-9875789 [CAREER], ESS-9806741, EIA-9972883), PRF, and Sprint. Additional equipment and software support is provided by Cisco, FORE Systems, and Intel.

Equipment housed in NSL include 30+ single- and dual-processor UltraSparc/Intel/SGI workstations running Solaris, Linux, and Windows NT, several private subnets with ATM, IP, and FastEthernet switches, studio quality video/audio capture devices, real-time MPEG I & II compression engines, a number of Cisco 7206VXR routers, and a laser printer. NSL is located in room G16 of the Computer Science Building.

Contact address: Prof. Kihong Park, Network Systems Lab, Dept. of Computer Sciences, Purdue University, West Lafayette, IN 47907; e-mail: park@cs.purdue.edu, tel.: (765) 494-7821, fax.: (765) 494-0739.


People

         Recent Pictures


Projects

       NSL Project Overview (pdf) (ps)   ||   SBS Architecture Overview (pdf) (ps)

       Supported by grants from NSF (ANI-9714707, ANI-9875789 [CAREER], ESS-9806741, EIA-9972883),
       PRF, and Sprint. Additional equipment and software support provided by Cisco, FORE, and Intel.


Purdue Infobahn QoS Testbed

Purdue Infobahn is a QoS testbed for implementing and evaluating the
SBS wide area network QoS architecture developed at the Network Systems Lab. It is a private IP-over-SONET backbone network consisting of a number of Cisco 7206VXR routers whose router software is being customized to implement SBS' IP switching algorithm. The phase I layout of the testbed is shown in the Purdue Infobahn backbone diagram.

The aim of Purdue Infobahn is to benchmark the performance of SBS at delivering user-specified QoS without resorting to resource reservation and admission control, two central mechanisms that impede scalability. Guaranteed services are provided as part of the Purdue Infobahn service suite for applications requiring strict per-flow QoS protection. SBS will be compared with other IETF diff-serv related architectures and benchmarked with multimedia applications in the context of MSI.

SBS/Purdue Infobahn is supported by NSF grants ANI-9875789 [CAREER] and EIA-9972883 with ANI-9714707, ESS-9806741 augmenting end-to-end traffic/QoS control and end system scheduling components of the system.


Publications


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