implementing cisco quality of service qos v2 3 pdf

... Trang 1© 2006 Cisco Systems, Inc All rights reserved QoS v2.2—1Lab Guide Implementing Cisco Quality of Service (QOS) v2.1 Trang 2© 2006 Cisco Systems, Inc All rights reserved QoS v2.2—2Visual ... partner. Trang 23© 2006 Cisco Systems, Inc All rights reserved QoS v2.2—30WRED Profiles Case Study Results Trang 24© 2006 Cisco Systems, Inc All rights reserved QoS v2.2—31WRED Profiles Case Study ... rights reserved QoS v2.2—33WRED Profiles Case Study Results Internet Traffic Class Traffic Class: Default (Internet) Trang 32© 2006 Cisco Systems, Inc All rights reserved QoS v2.2—39

Ngày tải lên: 04/07/2014, 01:20

... analogous scores of compet-ing services Figure 1.1 Simplified model of factors that shape perception of quality of service Trang 21† The second notion of quality of a particular service is what ... measurement of quality of a telecommunications service mustbegin with a consideration of the concerns of the users of that service todevelop a set of evaluative concepts that will guide the definition ofmeasures ... particular service is provided; and thecommon misconception that some measures of intrinsic quality of service areadequate surrogates for measures of perceived quality of service Trang 252.1 Function of

Ngày tải lên: 23/05/2018, 13:50

... của QoS………13 2.1 Integrated Services (IntServ) ……… 13 2.1.1 Giới thiệu về Integrated Services ………13 2.1.2 Cấu trúc của Integrated Services ………13 2.1.3 Mô hình dịch vụ của Integrated Services ... each service Chapter 4 shows some simulation results of the three frameworks based on some main parameters of the Quality of Service such as a graph of bandwidth , a graph of delay and a table of ... dung Chương 1 : Giới thiệu về Quality of Services trên Internet …8 1.1 Vấn đề Internet hiện nay 8 1.2 Các khái niệm về QoS 8 1.3 Protocols và Frameworks của QoS 10 1.4 Mục đích và đối

Ngày tải lên: 16/04/2021, 04:27

... Methodology 35 4.1 Active Measurements 36 4.2 Passive Measurements 36 4.3 Measurements of Application-Perceived Throughput 38 4.3.1 Layer of interest 38 4.3.2 Initial delay 39 4.3.3 ... throughput reflects the Quality of Service from the viewpoints of the applica- tion and user The focus of the thesis is on the influence of the network on the perceived Quality of Service and thus the ... (ITU-T) defines QoS as “the collective effect of serviceperformance, which determines the degree of satisfaction of a user of a ser- Stan-vice.” Others, e.g [6], define QoS as “a collection of technologies

Ngày tải lên: 18/10/2013, 12:15

... Variance of Mean Packet Delay per Nodes in s 2 6 -3 MUD-MAC(2-BR) MUD-MAC(4-BR) PBOA 802.11 5 4 3 2 1 0 0 10 Mbps offered Traffic 0.4 0.3 0 0 1 Figure 10 Variance of throughput per node over offered... ... out with a detailed review and discussion of available CLDs for both power control and MUD. Eventually, we are concerned with the Quality of Service (QoS) achieved with the different CLDs. For ... assess and compare the QoS of both schemes by means of exten- sive system simulations in terms of data throughput as well as delay. However, we also consider the fairness of both schemes as an

Ngày tải lên: 21/06/2014, 03:20

... Trang 1QUALITY OF SERVICE AND RESOURCE ALLOCATION IN WIMAX Edited by Roberto C Hincapie and Javier E Sierra Trang 2Quality of Service and Resource Allocation in ... the Section Trang 14Quality of Service and Resource Allocation in WiMAX 4 3 Then, the performance evaluation of these algorithms is made Section 5 presents a synthesis table of the main scheduling ... predefined Quality of Service (QoS) framework, enabling efficient and scalable networks for data, video, and voice However, the standard does not define the scheduling algorithm which guarantees the QoS

Ngày tải lên: 21/06/2014, 05:20

... PMP mode In WiMAX networks, quality of service (QoS) is provided through five different servicesclasses in the MAC layer (Andrews et al., 2007): 1 Unsolicited grant service (UGS) is designed for ... proportional resource allocation in OFDMA systems, Proceedings of IEEE Signal Processing Systems, 2004 SIPS 2004, pp 1-6, october 2004 Trang 10Part 2 Quality of Service Models and Evaluation Trang ... amount of bandwidth allocated until time t, ( t is a multiple of the duration of the frame(t=xT, T= slots by adding the amount of bits provided by each allocated slot At time t, to guarantee the QoS

Ngày tải lên: 21/06/2014, 05:20

... Perceived QoS (or Quality of Experience – QoE) is often considered as the “ultimate measure” of system performance According to ITU-T one can describe QoS as the ‘degree of objective service performance’ ... applications Variations of the e-model implementation [30] as well as new approaches [31], [32] are investigated to evaluate QoE under QoS-aware mobility mechanisms [33] In this paper authors ... number of OFDM symbols (/OFDMA slots) Therefore achieved transfer rates of a wireless link can vary significantly over short period of time This adds a “second dimension” to the problem of estimating

Ngày tải lên: 21/06/2014, 05:20

... [39] INFSCO-ICT-216203 DA VINCI D5.4.1 v1.0: Evaluation criteria for multimedia services, issue 1 [40] Olli Alanen; “Quality of Service for Triple Play Services in Heterogeneous Networks”; p 38-39; ... “Non-intrusive Evaluation of VoIP”, Springer 2007 [33] F Bernardo, N Vucevic, A Umbert, M Lopez-Benitez, “Quality of Experience Evaluation under QoS-aware Mobility Mechanisms”, [34] S Sengupta, M Chatterjee, ... International Conference on Communication Theory, Reliability, and Quality of Service [42] EuQoS project http://www.euqos.eu/ [43] Alain Mourad, Ismael Gutierrez; “System level evaluation, Issue

Ngày tải lên: 21/06/2014, 05:20

... 6000000 7000000 8000000 12345 Throughput (bps) Time (s) UGS (8 Mbs) rtPS 1 (3 Mbs) rtPS2 (3 Mbs) rtPS3 (3 Mbs) BE1 (1,5 Mbs) BE2 (1,5 Mbs) BE 3 (0.2 Mbs) Quality of Service and Resource Allocation ... support joint operation with it. Quality of Service and Resource Allocation in WiMAX 274 One of the drivers of WiMAX’s development is its suitability (because of centralized scheduling using ... Increasing the User Perceived Quality for IPTV Services, IEEE Communications... The main intention of our use of the twofold Gilbert-Elliott model was to show the response of the protection scheme

Ngày tải lên: 21/06/2014, 05:20

... is 132 6” and the frame interleaver is used for combined interleaving and. .. WireShark software is set to access the “capture” folder in the control centre before 302 Quality of Service ... size increases, the percentage of time for which the buffer is full decreases It is important to note that the reduction in percentage of 312 Quality of Service and Resource Allocation ... relationship in a sequence of data... past surge of the commercialization of the Internet, the continuing expansion of wireless services, and the increasing usage of multimedia applications,

Ngày tải lên: 21/06/2014, 05:20

... applications Provision of Quality of Service (QoS) is challenging in mobile ad hoc networks because of the dynamic characteristics of mobile networks and the limited resources of the mobile devices ... handoff among differ-ent wireless networks and provide an uninterrupted playback of the video with an acceptable QoS • Routing Because of the movement of the mobile devices, the topology of the ... cannot provide for the QoS, 802.11e was proposed to improve the functionality [2] In the 802.11 family, 802.11e is the wireless standard that defines a set of Quality of Service (QoS) enhancements

Ngày tải lên: 21/06/2014, 06:20

... packet 4 Packet removal time packet 4 (b) 1 21 321 4321 54321 654321 765432 876543 876543 876543 876543 C 87654 DC D FE D FE F 1 2 3 1 2 3 4 5 3 4 5 6 7 8 C 7 8 C D E F Tx over air Bu ffer status ... 2 3 4 2 3 4 5 3 4 5 6 4 5 6 4 5 6 4 5 6 4 5 6 7 5 6 7 8 6 7

l Time 1 2 3 4 5 6 Packet arrivals s 1 +s Transmission time of packet 2 Delay of packet 2 Transmission time of packet 4 Delay of ... limited number of retransmissions for web-browsing and data services (x) Web-browsing and data services are equipped with fi-nite buffer of buffer sizes B3andB4, respectively, both in unit of packets

Ngày tải lên: 22/06/2014, 22:20

...  z ∗4 − h2 s ∗4 +Xs ∗1 " , Λ2b  s2,s3 = z2− h2 s2− Xs3 2 + z3− h2 s3− Xs2 2 + 2X Re! z2− h2 s2− Xs3  z ∗3 − h2 s ∗3 − Xs ∗2 " . (24) Note that the two metrics Λ2aandΛ2b ... 2σ2 V  h3e − h 2Γ(4) fδ(δ)dh dδ. (36) Trang 60.5 0.4 0.3 0.2 0.1 0 f z 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 z Histogram ComputedW1,−1 Approximation div = 3.2 Figure 2: Histogram of a sample ofz defined ... γ in (32) by a conditional one, that is, conditioned on h2, E δ4| h2 = 9 2γ −3 +  9 4γ2−3 2γ −3 4  logγ −1 γ + 1 . (35) This approximation is compared with the exact expression of (32) inFigure

Ngày tải lên: 23/06/2014, 01:20

... 29640, 29760, 30120, 30720, 31320, 33360, 33600, 33840, 35400, 35520, 36480, 37560, 37920, 38280, 38640 Fixed interval 0, 732, 1464, 2196, 2928, 3660, 4392, 5124, 5856, 6588, 7320, 8052, 8784, ... 17892, 18744, 19596, 20448, 21300, 22152, 23004, 23856, 24708, 25560, 26412, 27264, 28116, 28968, 29820, 30672, 31524, 32376, 33228, 34080, 34932, 35784, 36636, 37488, 38340 Trang 8Table 10: Performance ... 32160, 32760, 33120, 33840, 34800, 35160, 35760, 36840, 38040 Fixed interval 0, 852, 1704, 2556, 3408, 4260, 5112, 5964, 6816, 7668, 8520, 9372, 10224, 11076, 11928, 12780, 13632, 14484, 15336,

Ngày tải lên: 23/06/2014, 01:20

... Trang 1Quality of ServiceBùi Thế Khang Nguyễn Thị Hương Đỗ Văn Mạnh Hà Nội, Ngày 08/07/2011 Trang 2Khái niệm QoS QoS trong mạng IP là các kỹ thuật xử lý lưu ... FTP, hệ thống mạng như vậy được gọi là có cam kết chất lượng dịch vụ gọi tắt là QoS. Trang 3Các tham số chính của QoS Tỷ lệ mất gói: Tham số này cho biết tỷ lệ phần trăm số gói IP bị mất trên ... lưu lượng trong QoS1 Phân loại lưu lượng ở mức lớp mạng  Để sắp xếp các luồng dữ liệu IP thành các lớp khác nhau nhằm phục vụ cho các chính sách QoS khác nhau, chúng ta sử dụng 3 bit đầu tiên

Ngày tải lên: 17/10/2014, 21:08

... the number of variables, l is the length of f, α is the maximum of the degrees of the polynomials P ij , β is the maximum of the degrees of the functions in P,and s is the number of the functions ... lengths of curves contained in a disk, the areas of surfaces in a ball, or generally, the Hausdorff measures of subsets of a ball, one can see that if the numbers of points of the intersections of ... BOUNDS OF HAUSDORFF MEASURES OF TAME SETS 49 [L2] T.L.Loi, Stratification of families of functions definable in o-minimal structures, Acta Math. Vietnam, Vol. 27, 2, 2002, 239 -244. [L3] T.L.Loi,...

Ngày tải lên: 27/10/2012, 10:05

... number of bits o Example - weights w i l flow 1 weight 2 flow 2 weight 1 flow 3 weight 3 l 1 /3 1/6 1/2 ∑ = i i w w i Cx C : link capacity Queue Management 17 Priority Queue o Several queues of different ... eg. ToS field of IP o Problem l how to avoid everybody sendinghigh priority packets? Queue Management 1 Quality of Service in IP Networks CH-1015 Ecublens http://icawww.epfl.ch Prof. Jean-Yves ... Fast Retransmit o Probability p of choosing a given flow is proportional to the rate of the flow l more packets of that flow, higher probability of choosing one of its packets Queue Management 16 FIFO o...

Ngày tải lên: 06/04/2013, 11:05

... information instead of when a packet arrives. The 140 Chapter 9. Quality of Service Quality of service (QoS) is an often-used and misused term that has a variety of meanings. In this book, QoS refers ... of voice quality. Table 9-4. Results for Test A Bandwidth Saturation (Percent) Delay (ms) PSQM Delay /QoS (ms) PSQM /QoS 0 76 1. 43 76 1. 43 40 233 1.94 106 1.5 60 242 2.1 104 1. 43 ... functions to achieve the best QoS possible. Cisco offers many tools for implementing QoS. In some scenarios, you can use none of these QoS tools and still achieve the QoS you need for your applications....

Ngày tải lên: 30/09/2013, 05:20