J. Turner. New directions in communications. IEEE Communications, 24(10):8--15, October 1986.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....in Section 3. We then evaluate Faqade in Section 4, both on general SLOs and for array virtualization; we then conclude in Section 5. 2 Related work There is an extensive body of work on networking SLAs [3] and network flow control methods going back to the leaky bucket throttling algorithm [23] and fair queueing [18, 9] There are several architectures for providing different levels of services to different flows, including the Differentiated Services (DiffServ) architecture [4] and the QoSBox [7] by mapping groups of flows with similar requirements into a few classes of traffic. ....

J. Turner. New directions in communications. IEEE Communications, 24(10):8 15, October 1986.

....applications. The widely foreseen next generation networks will provide guaranteed services to meet various user demands. This gives rise to the recent interest in the Quality of Service (QoS) feature. This vision has been around the networking community for more than a decade [15]. For instance, ATM networks serve as an example of a unified architecture that supports a diverse set of service classes. Of late, there has been termendous interest in IP in providing di#erentiated services via QoS guarantees. The basic methodology of QoS is rather intuitive commit resources ....

J.S. Turner. New directions in communications. IEEE Communications Magazine, 24(1986):8--15.

....through the first switch. The loss of periodicity poses some challenges because the admission criteria developed thus far have assumed that connections are periodic. There are two approaches that can be used to handle the loss of periodicity: 1. We can use traffic shapers such as leaky buckets [27] or regulators [29] at the output links of each switch. These traffic shapers restore the periodicity of the traffic by holding back messages if the interarrival time becomes less than the period. Messages only become available for transmission when the interarrival time since the preceding ....

....giving the buffer requirements for any work conserving scheduler. We also discussed how to extend our results to allow arbitrary deadlines and multiple switches. However, a comprehensive and quantitative study should be carried out to fully evaluate the system performance under these conditions [6, 27, 29, 33]. 6 Conclusion In this paper we have addressed issues related to providing guaranteed real time communication in ATM LAN s. The output link scheduling policy plays an important role in admitting real time connections. We have considered three representative scheduling policies: FCFS, WRR and ....

J. Turner. New directions in communications. IEEE Communications Magazine, 24:8--15, 1986.

....of service does not provide a satisfactory solution for many applications. Many users may be willing to pay more for some services if in return they receive some guarantee of performance from the network. This vision is by no means new in networking, and has been around for well over a decade [8]. One of the main targets of ATM has been to address this very basic problem, and to give a unified architecture for a diverse set of classes of service. The basic methodology of QoS is rather simple and widely accepted. The user reaches a contract with the network. This contract is composed of ....

J. S. Turner. New directions in communications. IEEE Communications Magazine, 10, 1986.

....services generally have a medium to low delay tolerance; the users do not want to wait long for responses. Distribution services include television broadcast and text news services. These services require special routing techniques in order to avoid transmitting multiple copies along the same link [Turner, 1986]. Broadband and narrowband rates. Estimated bit rate requirements range from 16 Kbps for telephone traffic to approximately 140 Mbps for high definition 23 24 television (HDTV) K aser and Rao, 1988] These figures assume high data compression. With lower data compression, a greater bandwidth is ....

....can be provided in a connection oriented system by establishing short connections. Network signaling and control. Network control information will also be present on the network and special consideration may be given to this control data to ensure that it is correctly transmitted with low delay [Turner, 1986]. Point to point and complex communications. Some services will require a single point to point connection while others, such as television broadcast, will require a unidirectional point to multipoint connection. Applications such as 25 teleconferencing require a multipoint to multipoint ....

Jonathon S. Turner. New directions in communications. IEEE Communications Magazine, 24(10):8--15, October 1986.

....with its single best effort class of service does not provide a satisfactory solution to many users. Many users are willing to pay more, if in return they receive a guaranteed performance from the network. This vision is by no means new in networking, and has been around for well over a decade [8]. One of the main targets of ATM has been to address this very basic problem, and to give a unified architecture for a diverse set of classes of service. The basic methodology of QoS is rather simple and widely accepted. The user reaches a contract with the network. This contract is composed of ....

J. S. Turner. New directions in communications. IEEE Communications Magazine, 10, 1986.

....of adaptive response to feedback signals are to be determined and what mechanisms are to be used to ensure that congestion at a node is not merely transferred to another node nor to sub regions of the network. Note also that link by link flow control cannot guarantee high sustained throughput [10]. In this context, one important question is whether cooperative, distributed controls give a better performance, for example, in terms of total carried load than non cooperative controls. In the case of non cooperative control, a single node control algorithm is typically replicated at all ....

J. Turner, "New directions in communications," IEEE Communications Magazine, vol. 24, pp. 8--15, August 1986.

....1 gigabit per second) the switches perform all routing in hardware. Since the time interval within which each packet must be routed is very small, the switches are preconfigured with routing information during connection setup. Figure 2 shows the architecture of Turner s Broadcast Packet Switch [21][22] This switch contains a Copy Network (CN) concatenated to a Routing Network (RN) ATM cells (packets) enter the switch on the left. Multicast cells, destined for several locations, are replicated by the CN, then routed to the appropriate destination by the RN. Point topoint cells follow an ....

J.S. Turner. "New Directions in Communications." In IEEE Communications Magazine, 24(10):8-15, October 1986.

....between Leland Window Based Congestion Management 2 one source and its destination. As an alternative approach to access control, rate based windows [3] leaky buckets or input throttles ) have recently received much attention in the industrial [4] 5] 6] 7] and academic [8] 9] [10] research communities. A leaky bucket forces a traffic source not to exceed some specified average rate of traffic input (over some interval) and some specified burst length (maximum sequence of consecutive cells at the peak input rate) Within those constraints, however, the accepted traffic ....

Jonathan S. Turner, "New Directions in Communications," pp. 8-15, IEEE Communications Magazine, Vol 24, No 10 (October 1986).

....the basic requirement, for the purposes of supporting Asynchronous Time Sharing, is that the Switch Fabric is nonblocking. That is, the Switch Fabric transfers information from Input to Output without packet loss. There have been a number of switch fabrics proposed in the literature [5] 6] [18] for integrated networks. Most of the proposed fabrics are not inherently nonblocking. However, under certain loading or operating conditions this requirement can be satisfied, albeit at the expense of the efficiency of the switch fabric. One possible switch fabric is shown in Figure 7. It ....

Turner, J.S., "New Directions in Communications", Proceedings of the 1986 International Zurich Seminar on Digital Communications, Zurich, Switzerland, March 11-13, 1986, pp. 25-32.

....involving an arbitrary number of clients, such as that used in error logging and surveillance systems. The call model was designed as part of the Fast Packet Project [7] which culminated in a four switch metropolitan area test bed with interconnection links operating at 100 megabit per second [18] [19] We are continuing to refine the call model and implement CMAP as part of Project Zeus [8] The goal of Zeus is to deploy a campus area high speed network consisting of combut do not stipulate a specific transport protocol or SAR protocol. As a result, CMAP can be layered over many existing ....

J.S. Turner, "New Directions in Communications." In IEEE Communications Magazine, 24(10):8-15, October 1986.

....[RaD90] In [Den92] the problem is analyzed in depth and several allocation policies are proposed and compared. 3. 4 Rate based schemes Current trends in preventive flow control seem to be towards rate based mechanisms [Jai90] A wellknown rate based control technique is the leaky bucket scheme [Tur86]. It is a mechanism for policing the negotiated transmission rate which is translated into the size of a virtual bucket al..located to the session. This bucket is filled by incoming packets, which may arrive spontaneously, and is emptied (leaks) at the negotiated constant rate. 13 Packets arriving ....

J.S. Turner, "New Directions in Communications ", IEEE Communications Magazine, 24, 10 (October 1986), 8--15.

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Turner, Jonathan S., "New Directions in Communications," IEEE Communications Magazine, October, 1986. Cox and Turner 73

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J. Turner. New directions in communications. IEEE Communications, 24(10):8--15, October 1986.

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Jonathan Turner. New Directions in Communications. IEEE Communications Magazine, 24(10), October 1986.

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Jonathan Turner. New Directions in Communications. IEEE Communications Magazine, 24(10), October 1986.

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J. Turner, "New directions in communications," IEEE Commun. Mag., vol. 24, no. 10, pp. 8-15, Oct. 1986.

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J. Turner, "New Directions in Communications," Proceedings of the Zurich Seminar on Digital Communication, pp. 25-32, March 86.

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Turner, J. (1986). New Directions in Communica- tion (or Which Way in the Information Age). IEEE Coramunicatwns Magazine, Vol 24, 8-15.

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J. Turner, "New Directions in Communications," Proceedings of the Zurich Seminar on Digital Communication, pp. 25-32, March 86.

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J.S Turner. New Directions in Communications. IEEE Communications Magazine, 24(10):8--15, 1986.

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J.S. Turner. "New Directions in Communications." In IEEE Communications Magazine, 24(10):8-15, October 1986.

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J.S. Turner. "New Directions in Communications." In IEEE Communications Magazine, 24(10):8-15, October 1986.

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J.S. Turner. "New Directions in Communications." In IEEE Communications Magazine, 24(10):8-15, October 1986.

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J.S. Turner. "New Directions in Communications." In IEEE Communications Magazine, 24(10):8-15, October 1986.

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Turner, J.S. (1986), New Directions in Communications (or Which Way to the Information Age). IEEE Communications, Vol. 24, No. 10

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J.S. Turner. "New Directions in Communications." In IEEE Communications Magazine, 24(10):8-15, October 1986.

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J.S. Turner. "New Directions in Communications." In IEEE Communications Magazine, 24(10):8-15, October 1986.

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J.S. Turner. "New Directions in Communications." In IEEE Communications Magazine, 24(10):8-15, October 1986. Connection Management Software System Architecture Page 8 Applied Research Laboratory Zeus Project

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