D.S. Alexander et al. Active bridging. Proceedings of SIGCOMM'97, pages 101--111, September 1997.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....the packets that flow through AAs hosted by the EE. Examples include ANTs and the PLAN Switchlets. Per packet processing range from relative simple local operations such as compression or error correction (e.g. 29] all the way to complex AAs that in effect implement virtual routers or bridges [2]. One property of such EEs is that the AAs that they host have miminal interact with the rest of the router infrastructure. Their primary interaction with the rest of the router is the exchange of packets, although they may occasionally also collect status information or negotiate with the Node OS ....

S. Alexander, M. Shaw, S. Nettles, and J. Smith. Active Bridging. In Proceedings of the SIGCOMM '97 Symposium pages 101--111. ACM, September 1997.

....like sandboxing and Java bytecode verification. Smart Packets at BBN [6] also uses capsules to extend the diagnostic functionality in the network, using a specially developed language (Spocket) and run time environment. The SwitchWare project at the University of Pennsylvania and Bellcore [7] relies on active packets, carrying limited functionality programs written in PLAN [8] resident or loaded out of band active extensions to provide additional functionality and an active router infrastructure. Verification, authentication and secure bootstrap techniques are applied to insure ....

....has been used to implement forward error correction (FEC) protocol processing (boosting) on a single OC 3 ATM link. Active network applications include active reliable multicast [5] self organizing network caching [10] multicast video distribution [15] online auctions [4] active bridging [7], protocol boosters [19] active congestion control, distributed firewalls, and packet filtering. Software approaches to such services (e.g. ANTS, Smart Packets, PLAN and CANES) have historically been implemented over IP networks. In the context of ATM networks, even though QoS features are ....

D. Alexander, M Shaw, S. Nettles, and J. Smith, "Active Bridging", Proceedings of the ACM SIGCOMM'97 Conference, Cannes, France, September 1997.

....loaded on to a router or switch by an out of band mechanism. Associated with each extension is a set of flows, whose packets should be processed by this extension. ALIEN and PLAN both support the loading of OCaml extensions; this facility was used to create an extensible active Ethernet bridge [Alexander97b] running over ALIEN. Extensions register packet filters to give access to the network flows that they wished to process. The Composable Active Network Elements (CANES) Bhattacharjee98] architecture supports a limited form of programmable extensions the behaviour of a flow of packets may be ....

D. Scott Alexander, Marianne Shaw, Scott M. Nettles, and Jonathan M. Smith. Active Bridging. In SIGCOMM [SIG97]. (p 25)

....may be used to predict how the Internet will evolve in the future, and may be used to create improved network models. II. PREVIOUS WORK Network topology ties together many facets of a network s life and performance. It is studied at the overall topology level [6] link architecture [7] [8], and end to end path level [9] 10] Temporal characteristics of a network are inseparable consequences of its connectivity. This linkage is apparent from [11] 12] 13] Scaling factors, such as power law relationships and Zipf distributions, arise in all aspects of network topology [6] 14] ....

D. S. Alexander, M. Shaw, S. Nettles, and J. M. Smith, "Active Bridging," in SIGCOMM, 1997, pp. 101--111.

....Active Mes sages [137] messages are bound to user level processing on the receiving end. This processing is responsible for extracting the message from the network and integrate it into the on going compu tation. Active networks [130] extend this idea by attaching processing to the network path [5, 11, 4] or to the messages being forwarded through it [72, 143] Active Disks [1, 113, 75] on the other hand, attach processing to the I O streams destined to or originated at disks. Active Services [54, 7] propose the construction of value added services following an active approach. In the Active ....

....network research is to develop mechanism to increase the flexibility and customizability of the network and reduce the difficulty of integrating new technology and standards into a shared network infrastructure. Two commonly distinguished approaches to active networking are: programmable switches [5, 11, 4] and capsules [143, 94, 72] The first approach adds functionality to nodes out of band from the packets being processed by the node. In the capsule based approach, capsules contain both code and data as they move through the network and are executed on the nodes they encounter. Although these ....

D. Scott Alexander, Marianne Shaw, Scott M. Nettles, and Jonathan M. Smith. Active bridging. In Proceedings of the A CM conference on Applications, technologies, architectures, and protocols for computer communication (SIGCOMM '97), pages 101-111, Cannes, France, September 1997.

....is available to outsiders and the right kinds of operations are made available to them. For example, researchers in the SwitchWare Project at the University of Pennsylvania have experimented with downloadable OCaml modules capable of dynamically altering switching and queuing strategies on routers [11, 5]. The privilege to use such a function will probably be limited by some form of cryptographic authorization system [4] but the underlying capabilities easily accommodate a man4 in the middle attack on all of the packets passing through the a ected router. Password sning would clearly be a ....

D. Scott Alexander, Marianne Shaw, Scott M. Nettles, and Jonathan M. Smith. Active Bridging. In Proceedings, 1997.

....[12] is another framework for deploying proxy mechanisms that pioneered many concepts in the area. Our work goes beyond these frameworks to develop a general signalling protocol that facilitates coordination among protocol boosters and PEPs. Proxy signalling is similar to active networks [29] [1], 25] 31] in that both enhance the service provided by the network by depositing code in the routers along an end toend path. In an environment like ANTS [31] for example, the arrival of a capsule that contains the ID of a program the application wants the router to run can be interpreted as ....

D. Scott Alexander, Marianne Shaw, Scott M. Nettles, and Jonathan M. Smith. Active bridging. In Proceedings of SIGCOMM '97, pages 101--111, September 1997.

....and J. Hartman, Depart ment of Computer Science, University of Arizona, Tucson, AZ 85721 (jhhcs.arizona.edu) This work was supported in part by DARPA contracts N66001 968518, N66001 97 C 8514, and DABT63 94 C 0058, and NSF grants ANI 99 06704 and ANI 00 82493. [3], 11] and CANES [5] At the topmost level are the active applications (AA) themselves. Environments Fig. 1. Software layers running on an active router. We were major contributors to developing and docu menting the interface [1] between the bottom two layers in Figure 1. This paper ....

D. Scott Alexander, Marianne Shaw, Scott M. Nettles, and Jonathan M. Smith. Active bridging. In Proceedings of the ACM SIGCOMM '97 Conference, pages 101-111, September 1997.

....memory, and computational resources among the various packet flows that traverse the node. At the next level, one or more execution environments (EE) define a particular programming model for writing active applications. To date, several EEs have been defined, including ANTS [16, 15] PLAN [1, 5], and CANES [3] At the topmost level are the active applications (AA) themselves. The goal of active networks is to make the network as programmable as possible, while retaining enough common interfaces so that active applications injected into the network can run on as many nodes as possible. ....

D. Scott Alexander, Marianne Shaw, Scott M. Nettles, and Jonathan M. Smith. Active bridging. In Proceedings of the ACM SIGCOMM '97 Conference, pages 101--111, September 1997.

....In Switchware, formal methods are applied to assure the security of the network; one goal is the identification of security properties of the underlying infrastructure for which theorems can be proved. A prototype active bridge demonstrates how network elements can be upgraded on the fly [ Alexander et al. 1997 ] A complementary part of the effort is the development of PLAN [ Hicks et al. 1998 ] a programming language for active networks. PLAN is intended to be compact, so that small forwarding programs can be carried directly in each packet. These programs can refer to node resident code for ....

D. S. Alexander, M. Shaw, S. Nettles, and J. Smith. Active Bridging. In SIGCOMM'97, 1997.

....a platform independent target, while the inflexibility and monolithic structure of the JVM limit its own suitability to form that target. The kinds of platforms to which this work is aimed range from traditional workstations, running a changing mix of applications, to nodes in an active network [ASNS97] executing small pieces of code that they receive, and to embedded systems in which resources may be scarce but the applications may be fixed. Section 2 illustrates some of the problems that I believe exist with the existing design and implementation of the JVM. Section 3 summarizes my proposed ....

D. Scott Alexander, Marianne Shaw, Scott M. Nettles, and Jonathan M. Smith. Active bridging. In Proceedings of the ACM SIGCOMM Conference : Applications, Technologies, Architectures, and Protocols for Computer Communication (SIGCOMM-97), volume 27,4 of Computer Communication Review, pages 101--114, New York, September14--18 1997. ACM Press.

....of ambition. On the less ambitious side, a router or firewall could present a management interface for configuring packet processing; such mechanisms are available in most routers today [5] More ambitious would be for routers to allow new code to be loaded to extend or modify packet processing [6], 7] Perhaps most ambitious, we could allow programmability at the granularity of individual packets, flows of packets, or protocols. Here, we call these programmable packets capsules, but they are also sometimes refered to as active packets. Capsules may be executed on all or some of the nodes ....

D. Scott Alexander, Marianne Shaw, Scott M. Nettles, and Jonathan M. Smith, "Active bridging," in Proceedings, 1997.

No context found.

D.S. Alexander et al. Active bridging. Proceedings of SIGCOMM'97, pages 101--111, September 1997.

No context found.

S. Alexander, M. Shaw, S. Nettles, and J. Smith. Active Bridging. In Proceedings of the SIGCOMM '97 Symposium pages 101--111. ACM, September 1997.

No context found.

D. Alexander, M. Shaw, S. Nettles, and J. Smith, "Active bridging," in Proceedings ACM SIGCOMM 1997.

No context found.

D. Scott Alexander, et al., "Active Bridging," Proceedings of the ACM SIGCOMM'97. September 1997. Cannes, France.

No context found.

D. S. Alexander, M. Shaw, S. Nettles, and J. M. Smith, "Active Bridging," in SIGCOMM, 1997, pp. 101--111.

No context found.

D.S. Alexander et al. Active bridging. Proceedings of SIGCOMM'97, pages 101-111, September 1997.

No context found.

D.S. Alexander, M. Shaw, S.M. Nettles, and J.M Smith, "Active Bridging," Computer Communication Review, Vol. 27, No. 4, October 1997, 101-111.

No context found.

D. S. Alexander, M. Shaw, S. M. Nettles, and J. M. Smith. Active bridging. In Proceedings of the ACM SIGCOMM '97 Conference, pages 101--111, September 1997.

No context found.

ALEXANDER, D. S., SHAW, M., NETTLES, S., AND SMITH, J. M. Active Bridging. In Proc. of ACM SIGCOMM '97 (1997), pp. 101--111.

No context found.

D.S. Alexander et al. Active bridging. Proceedings of SIGCOMM'97, pages 101-111, September 1997.

No context found.

D. S. Alexander, M. Shaw, S. M. Nettles and J. M. Smith, "Active Bridging", presented at Proceedings of the ACM SIGCOMM 97, Cannes, France, 1997.

No context found.

D. S. Alexander, M. Shaw, S. M. Nettles, and J. M. Smith. Active Bridging. In Proceedings of the ACM SIGCOMM '97 Conference, pages 101--111, September 1997.

No context found.

D. S. Alexander, M. Shaw, S. M. Nettles, and J. M. Smith, "Active Bridging," in Proceedings of the ACM SIGCOMM Conference, New York, Sept. 1997, vol. 27 of Computer Communication Review, pp. 101--114, ACM Press.

First 50 documents  Next 50

Online articles have much greater impact   More about CiteSeer.IST   Add search form to your site   Submit documents   Feedback  

CiteSeer.IST - Copyright Penn State and NEC