Bhattacharjee, B., K.L. Calvert, and E.W.Zegura, "On Active Networking and Congestion," 1996, College of Computing, Georgia Institute of Technology: Atlanta, GA.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....a grant under NASA s REE program administered by JPL, NSF CISE grant 9703470, and the AFRL IFGA Information Assurance Institute under grant AFOSR F49620 01 1 0312. resource limited conditions. These systems place computations in the network, either within routers themselves (e.g. [4], 5] 6] or at the application level using an overlay network (e.g. 7] 8] and employ system determined, local adaptations, such as priority based video frame dropping. While such adaptations impose little overhead, they can be inefficient because they do not take into account global ....

....this with the MediaNet LSs only. The priority based frame dropping configuration consists of tagging P, B, and I frames with successively higher priority, and during overload the lowest priority frames are dropped. This approximates some past approaches on intelligent frame dropping [4], 21] The proactive frame dropping configuration also consists of intelligently dropping video frames during overload. In this case, the LS observes when frames start getting dropped for a particular link, and then adapts by proactively dropping all B frames, and then later all P frames. ....

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S. Bhattacharjee, K. Calvert, and E. Zegura, "On Active Networking and congestion," College of Computing, Georgia Tech, Tech. Rep. GITCC -96-02, 1996.

....comment and further development. One of the earliest active networks, ANTS, provides a JAVA based framework for the development of dynamic network protocols [4] Many protocols have been successfully emulated using ANTS, such as multicasting [5] mobile host support [6] and congestion control [7]. SNAPD, a more recent active packet system, demonstrates that user defined packet processing routines can be invoked without a detrimental impact on performance [1] Another recent active network architecture, comprised of BOWMAN and CANES, demonstrates the feasibility of support for existing ....

Samrat Bhattacharjee, "On Active Networking and Congestion, " Tech. Rep. GIT-CC-96/02, Georgia Institure of Technology, February 1996.

....New services can be introduced by simply programming the nodes on the network. 1 Smart new services tackle the problems of a traditional network by performing computations within the network. Thus end to end delays can be reduced which in turn decrease the level of congesion in an active network[2]. Minden[3] points out how Active networks can be used to provide new services that can benefit a mobile user. Keeping these in mind we have designed two new prototype services called mSMTP and mHTTP. These services demonstrate features like location awareness, dynamic resource caching discovery, ....

Samrat Bhattacharjee, Ken Calvert and Ellen W. Zegura. "On Active Networking and Congestion." Technical Report GIT-CC-96-02, College of Computing, Georgia Tech.

....the packet formats, the language and its design goals, and security considerations. Categories and Subject Descriptors: C.2.1 [Computer Communications Network] Network Architecture and Design 1. INTRODUCTION Active Networks [Tennenhouse and Wetherall 1996; Wetherall and Tennenhouse 1996; Bhattacharjee et al. 1996; Tennenhouse et al. 1997] is a framework within which users inject programs contained in messages into a network capable of performing computations and manipulations on behalf of the user. Nodes along the network receive these messages, execute the programs within, and (possibly) return values or ....

Bhattacharjee, S., Calvert, K. L., and Zegura, E. W. 1996. On active networking and congestion. Technical Report GIT-CC-96/02, Georgia Institute of Technology, College of Computing.

....active networks is currently being done. This includes Active Reliable Multicast [25] improvements in network caching [15, 32] Network Security [10] Active Bridging [12] data fission and fusion techniques within the network [37] and application oriented congestion control mechanisms [30, 33, 35]. In future implementations we wish to take a closer look at userlevel application services that can directly benefit from the underlying intelligence provided by an active network. 67 ....

Samrat Bhattacharjee, Kenneth L. Calvert and Ellen W. Zegura, On Active Networking and Congestion. Technical Report, GIT-CC-96-02, College of Computing, Georgia Tech., Atlanta, GA, 1996.

....active networks program. Active networks move extensibility properties into the network layer by allowing code to be dynamically loaded into intermediate nodes on the network [72] This has been demonstrated to be useful for applications ranging from customized congestion control to web caching [12, 82]. Generally, the active network concept differs from the agent concept in that mobile code acts at a lower level of abstraction. That is, the node s network layer (e.g. protocol drivers and device drivers) is visible and modifiable. 6.1 Security Conversant uses Java as its execution environment ....

S. Bhattacharjee, K. Calvert, E. Zegura, "On Active Networking and Congestion". Technical Report GIT-CC-96-02, College of Computing, Georgia Tech.

....increase the programmability of computer networks and network components. The program hopes to increase user and application control over how packets are handled, and to increase the flexibility of computer networks and the ability to upgrade them. A major motivation behind Active Networks [2] [3], 1] 4] was the theory that there is an exponential growth of computing power in the network suggested by Moore s Law that the speed of electronic components doubles every 18 months. Unfortunately this theory does not always match reality. In fact, in most parts of the Internet, the growth ....

Samat Bhattacharjee, Kenneth L. Calvert, and Ellen W. Zegura, "On active networking and congestion," Tech. Rep. GIT-CC96 /02, Georgia Institute of Technology, College of Computing, 1996.

....allocated to each application s packets can be reduced in a manner that is tailored to the application than applied generally. It considers a range of schemes for processing application data during congestion, including unit level dropping, media transformation and multi stream interaction [4]. This approach allows intelligent traffic handling by using Active Processing Control Headers , providing a structure over the transmitted data. The algorithms which are activated in the network nodes are fix. So the control header just allows a selection of a certain algorithm. Netscript by ....

Samsat Bhattacharjee, Kenneth L. Calvert, Ellen W. Zegura, "On Active Networking and Congestion", Technical Report GIT-CC-96/02, College of Computing, Georgia Institute of Technology, 1996.

....packets to embody complex functionality. Alexander et al. 1] describe an implementation of an active bridge implemented entirely by switchlets running within the SwitchWare architecture. A related effort is the BBN smart packets and active router projects [20] Bhattacharjee et al. [9] describe an active networks architecture for dealing with congestion in the network. They detail the use of active processors software modules that implement application specific processing on a packet level basis. These packets are labeled and are dropped in the face of congestion ....

BHATTACHARJEE, S., CALVERT, K. L., AND ZEGURA, E. On active networkingand congestion. Technical Report GUTCC -96/02, College of Computing, Georgia Institute of Technology, Atlanta GA, 1996.

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Bhattacharjee, B., K.L. Calvert, and E.W.Zegura, "On Active Networking and Congestion," 1996, College of Computing, Georgia Institute of Technology: Atlanta, GA.

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S. Bhattacharjee, K.L. Calvert, and E.W. Zegura, "On Active Networking and Congestion," Technical Report, GIT-CC-96/02, Georgia Institute of Technology, 1996. Available at http://www.cc.gatech.edu/fac/Ellen.Zegura/anandc.ps

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