A remotely accessible network processor-based router for network experimentation

2011 ACM/IEEE Seventh Symposium on Architectures for Networking and Communications Systems

2011

Self Cite

Network administrators lack the tools they need to understand and react to their changing networks. This makes it difficult for them to make informed, timely decisions regarding network management, capacity planning, and security. These challenges will only increase as networks continue to gain in throughput, become more complex, and encrypt more and more of their traffic.This paper describes the Passive Network Appliance, or PNA, which is our proposed solution to this problem. The PNA provides snapshots of network behavior through time, in a cost-effective manner. The PNA is implemented on commodity hardware and can enforce network policy in realtime at the granularity of network frame arrival. This paper describes the system, and its evaluation in laboratory and real-world deployments.

Section: Laboratory Resultsmentioning

confidence: 99%

A Passive Network Appliance for Real-Time Network Monitoring

Schultz

Wun

2011 ACM/IEEE Seventh Symposium on Architectures for Networking and Communications Systems

2011

Self Cite

“…The single core machine in the middle is a CCNx router. Network-Processor Routers (NPRs) [10], shown as circles in Figure 2, connect these machines and monitor throughput.…”

Section: Ccnx Performance Studymentioning

confidence: 99%

Scalable NDN Forwarding: Concepts, Issues and Principles

Yuan

Song

2012 21st International Conference on Computer Communications and Networks (ICCCN)

2012

Self Cite

122

Abstract-Named Data Networking (NDN) is a recently proposed general-purpose network architecture that leverages the strengths of Internet architecture while aiming to address its weaknesses. NDN names packets rather than end-hosts, and most of NDN's characteristics are a consequence of this fact. In this paper, we focus on the packet forwarding model of NDN. Each packet has a unique name which is used to make forwarding decisions in the network. NDN forwarding differs substantially from that in IP; namely, NDN forwards based on variable-length names and has a read-write data plane. Designing and evaluating a scalable NDN forwarding node architecture is a major effort within the overall NDN research agenda. In this paper, we present the concepts, issues and principles of scalable NDN forwarding plane design. The essential function of NDN forwarding plane is fast name lookup. By studying the performance of the NDN reference implementation, known as CCNx, and simplifying its forwarding structure, we identify three key issues in the design of a scalable NDN forwarding plane: 1) exact string matching with fast updates, 2) longest prefix matching for variable-length and unbounded names and 3) large-scale flow maintenance. We also present five forwarding plane design principles for achieving 1 Gbps throughput in software implementation and 10 Gbps with hardware acceleration.

“…We conducted the performance study in the Open Network Laboratory (ONL) [11]. We used up to 48 single-core machines from the testbed.…”

Section: A Testbedmentioning

confidence: 99%

Experimental evaluation of content distribution with NDN and HTTP

Yuan

2013 Proceedings IEEE INFOCOM

2013

Self Cite

Abstract-Content distribution is a primary activity on the Internet. Name-centric network architectures support content distribution intrinsically. Named Data Networking (NDN), one recent such scheme, names packets rather than end-hosts, thereby enabling packets to be cached and redistributed by routers. Among alternative name-based systems, HTTP is the most significant by any measure. A majority of today's content distribution services leverage the widely deployed HTTP infrastructure, such as web servers and caching proxies. As a result, HTTP can be viewed as a practical, name-based content distribution solution. Of course, NDN and HTTP do not overlap entirely in their capabilities and design goals, but both support name-based content distribution. This paper presents an experimental performance evaluation of NDN-based and HTTP-based content distribution solutions. Our findings verify popular intuition, but also surprise in some ways. In wired networks with local-area transmission latencies, the HTTP-based solution dramatically outperforms NDN, with roughly 10x greater sustained throughput. In networks with lossy access links, such as wireless links with 10% drop rates, or with non-local transmission delays, due to faster link retransmission brought by architectural advantages of NDN, the situation reverses and NDN outperforms HTTP, with sustained throughput increased by roughly 4x over a range of experimental scenarios.