Active reliable multicast

Lehman, Li-wei H.; Garland, Stephen J.; Tennenhouse, David L.

doi:10.1109/infcom.1998.665078

Cited by 139 publications

(80 citation statements)

References 10 publications

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“…Despite this, our example (and others, e.g. [22,21]) shows that even with only very basic services, non-trivial applications are feasible. An interesting challenge to the AN community is to design a set of node-resident services that maximizes the range of evolutions that can be achieved with just APs.…”

Section: Discussionmentioning

confidence: 60%

“…A soft-store is an essential service for APs and is provided by many AN systems (e.g. [36,22,24,10,28]…”

Section: Manementioning

confidence: 99%

“…Thus far there have been numerous demonstrations using AN to customize networks for a specific application's needs (e.g. [21,10,22]) as well as some demonstrations of the use of AN to build network infrastructures from scratch [10]. However, while the key mechanisms are in place in many AN systems, there have been few demonstrations of using AN to facilitate network service evolution.…”

Section: Introductionmentioning

confidence: 99%

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Evolution in Action: Using Active Networking to Evolve Network Support for Mobility

et al. 2002

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Abstract.A key early objective of Active Networking (AN) was to support on-the-fly network evolution. Although AN has been used relatively extensively to build application-customized protocols and even whole networking systems, demonstrations of evolution have been limited. This paper examines three AN mechanisms and how they enable evolution: active packets and plug-in extensions, well-known to the AN community, and update extensions, which are novel to AN. We devote our presentation to a series of demonstrations of how each type of evolution can be applied to the problem of adding support for mobility to a network. This represents the most large-scale demonstration of AN evolution to date. These demonstrations show what previous AN research has not: that AN technology can, in fact, support very significant changes to the network, even while the network is operational.

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Section: Discussionmentioning

confidence: 60%

“…A soft-store is an essential service for APs and is provided by many AN systems (e.g. [36,22,24,10,28]…”

Section: Manementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evolution in Action: Using Active Networking to Evolve Network Support for Mobility

et al. 2002

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“…Other papers 20,11,12] contain further technical detail and quantitative results about individual topics.…”

Section: Why Active N E T Work?mentioning

confidence: 99%

Introducing new Internet services: why and how

Wetherall

Legedza

Guttag³

1998

IEEE Network

111

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Active networks permit applications to inject programs into the nodes of local and, more importantly, wide area networks. This supports faster service innovation by making it easier to deploy new network services. In this paper, we discuss both the potential impact of active network services on applications and how such services can be built and deployed. We explore the impact by suggesting sample uses and arguing how such uses would improve application performance. We explore the design of active networks by presenting a novel architecture, ants, that adds extensibility at the network layer and allows for incremental deployment of active nodes within the Internet. In doing so, ants tackles the challenges of ensuring that the exibility o ered by active networks does not adversely impact performance o r s e curity. Finally, we demonstrate how a new network service may be e xpressed i n ants.Keywords: active n e t works, networking protocols, distributed applications, performance.1 Why Active N e t works?The pace of innovation in networked applications is unrelenting. New applications continue to emerge rapidly and often bene t from new network services that better accommodate their modes of use. In this paper, we address the questions of why and how to deploy s u c h new services. We begin by observing that while it is possible to deploy new network services at end-systems (e.g., as overlays), implementing them at nodes interior to the network or at the network layer often o ers better functionality and performance. This observation is supported by a n umberofad hoc e orts to exploit such functionality:Multimedia bandwidth to ensure that time-sensitive data is delivered in a timely fashion, and IP Multicast 4] reduces the bandwidth needed to communicate from one sender to multiple receivers. In the case of RSVP, bandwidth reservation functionality cannot beprovided e ectively above the network layer. In the case of multicast, excess bandwidth and latency costs are incurred when an overlay is used and its topology does not match the underlying topology, as was problematic in the early MBONE. Laptops bene t from host mobility and transport services optimized for wireless transmission. For example, Mobile IP 18] allows a laptop to be reached at di erent sites without the need to recon gure address information, and Snoop-TCP 1] compensates for the fact that the congestion control mechanisms of TCP were not designed for lossy media. Mobile IP is by de nition a network-level routing service Snoop-TCP intercepts TCP packets within the network at wireless base stations. Web servers bene t from caching and load distribution services, e.g., Cisco's CacheDirector product reduces the amount of wide-area tra c by i n tercepting repeated requests, and Cisco's LocalDirector product reduces the concentration of Web tra c by distributing requests across multiple servers. By intercepting packets at routers, these products are transparent to end systems and minimize latency and bandwidth usage compared to a proxy agent. Unf...

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“…Contributing mainly on feedback implosion problems, retransmission scoping and cache of data, active reliable multicast offer a general and flexible framework for customized functionalities in network protocols (although many problems regarding deployment and security remains). ARM (Active Reliable Multicast) [5] and AER (Active Error Recovery) [4] are two protocols that were recently proposed in the research community and that use active services within routers. They differ in the strategy adopted for solving the NACK implosion problem.…”

Section: Introductionmentioning

confidence: 99%