implementing cisco quality of service student guide 2 3
Quality of Service in IP Networks
Ngày tải lên :
06/04/2013, 11:05
... 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 priority
l source may mark ... 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 ... saves 2 s ì 0.5 MB/s = 1 MB
rate
1 MB/s
2 MB/s
3 MB/s
time
1 s 2 s 3 s 4 s
Flow A
Flow B
Queue Management
19
Characteristics
o It modifies the optimal strategy of sources
l FIFO: be greedy - send...
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Quality of Service
Ngày tải lên :
30/09/2013, 05:20
... PSQM/QoS
0 76 1. 43 76 1. 43
40 23 3 1.94 106 1.5
60 24 2 2. 1 104 1. 43
75 28 0 7 1 02 1.51
90 30 0 9 104 1.51
100 35 0 10 105 1.51
Figure 9-7. Graph of Test A Results
1 62
For basic CAR ... ip address 1 92. 168. 121 .18 25 5 .25 5 .25 5 .24 8
no ip mroute-cache
ip rtp header-compression
encapsulation ppp
!
Frame Relay
!
interface Serial0/0
ip 1 92. 168. 120 .10 25 5 .25 5 .25 5.0
encapsulation ... not requiring special network services). Values are 16, 32 , 64,
128 , 25 6, 5 12, 1 024 , 20 48, and 4096. The default is 25 6.
o reservable-queues—(Optional) Number of reservable queues used for...
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Tài liệu New Network Architecture Digivance® Simulcast Networks Reduce Network Costs and Improve Quality of Service ppt
Ngày tải lên :
10/12/2013, 19:15
...
Panel
FP 3: 1
RP 3: 1
Host 1
Host 2
Host 3
BTS
Sector
1
Interface
Panel
FP 2: 1
RP 2: 1
Host 4
Host 5
Remote
1
Remote
2
Remote
3
Remote
4
Remote
5
A
N
N!
B=
i
i!
i=0
N
A
∑
Improving Grade of Service ... Employer
1 021 14AE 1/06 Revision © 20 02, 20 04, 20 06 ADC Telecommunications, Inc. All Rights Reserved
Web Site: www.adc.com
From North America, Call Toll Free: 1-800 -36 6 -38 91 ã Outside of North ... Call Toll Free: 1-800 -36 6 -38 91 ã Outside of North America: +1-9 52- 938 -8080
Fax: +1-9 52- 917- 32 3 7 ã For a listing of ADC’s global sales office locations, please refer to our web site.
WHITE PAPER
...
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Tài liệu Infrastructure Quality of Service pptx
Ngày tải lên :
11/12/2013, 14:15
... the service policy named gary.
http://www .cisco. com/univercd/cc/td/doc/product/software/ios 120 / 120 newft/ 120 limit/ 120 xe/ 120 xe5/mqc/mcli.htm
Copyright â 20 00, Cisco Systems, Inc. 44
Quality of Service
Signaling
Quality ... Service
Signaling
Quality of Service
Signaling
â 20 00, Cisco Systems, Inc. www .cisco. com econ_ 038 6_09_001.ppt
Copyright â 20 00, Cisco Systems, Inc. 40
â 20 00, Cisco Systems, Inc. www .cisco. com econ_ 038 6_09_010.ppt
Keep ... host.
http://www .cisco. com/univercd/cc/td/doc/product/software/ios 121 / 121 cgcr/qos_c/qcprt5/qcdrsvp .htm
Copyright â 20 00, Cisco Systems, Inc. 23
â 20 00, Cisco Systems, Inc. www .cisco. com econ_ 038 6_09_010.ppt
Keep...
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Tài liệu Introduction to Quality of Service pdf
Ngày tải lên :
11/12/2013, 14:15
... module.
http://www .cisco. com/univercd/cc/td/doc/product/software/ios 120 / 120 newft/ 120 t/ 120 t5/saaoper.htm#xtocid20 32 5 1
Copyright â 20 00, Cisco Systems, Inc. 23
â 20 00, Cisco Systems, Inc. www .cisco. com Econ_ 038 5_ 02_ 010.ppt
Keep ...
http://www .cisco. com/univercd/cc/td/doc/product/software/ios 120 / 120 newft/ 120 t/ 120 t3/ipatmcs2.htm
Copyright â 20 00, Cisco Systems, Inc. 2
â 20 00, Cisco Systems, Inc. www .cisco. com Econ_ 038 5_ 02_ 010.ppt
Keep All Graphics ... in a Cisco IOS software T release: 12. 0(5)T.
http://www .cisco. com/univercd/cc/td/doc/product/software/ios 120 / 120 newft/ 120 t/ 120 t5/cbwfq.htm
Copyright â 20 00, Cisco Systems, Inc. 22
â 20 00, Cisco...
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Tài liệu Campus Quality of Service pdf
Ngày tải lên :
11/12/2013, 14:15
... router.
© 20 00, Cisco Systems, Inc. 21
© 20 00, Cisco Systems, Inc. www .cisco. com econ _38 7_05_010.ppt
© 20 00, Cisco Systems, Inc. 5
© 20 00, Cisco Systems, Inc. www .cisco. com econ _38 7_05_010.ppt
Need ... achieving QoS.
© 20 00, Cisco Systems, Inc. 1
© 20 00, Cisco Systems, Inc.
Campus
Quality of Service
© 20 00, Cisco Systems, Inc. 17
© 20 00, Cisco Systems, Inc. www .cisco. com econ _38 7_05_010.ppt
Campus ... Layer 2 or at Layer 3 as follows:
ã At Layer 2 using the 3 bits in the 8 02. 1p field (referred to as class of service or CoS),
which is part of the 8 02. 1Q tag
ã At Layer 3 using the 3 bits of DSCP...
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Chapter 24 Congestion Control and Quality of Service pdf
Ngày tải lên :
06/03/2014, 12:20
... queuing
24 .15
Figure 24 .9 Congestion avoidance, additive increase
24 . 23
24 -5 QUALITY OF SERVICE
24 -5 QUALITY OF SERVICE
Quality of service (QoS) is an internetworking issue
Quality of service ... 24 .33
Figure 24 .21 Token bucket
24 .29
Figure 24 .19 Leaky bucket
24 .20
Figure 24 . 12 BECN
24 .24
Figure 24 .15 Flow characteristics
24 .18
Figure 24 .10 TCP congestion policy summary
24 .28
Figure 24 .18 ... section:
24 .9
Figure 24 .5 Congestion control categories
24 .27
Figure 24 .17 Priority queuing
24 .22
Figure 24 .14 Four cases of congestion
24 .2
24-1 DATA TRAFFIC
24 -1 DATA TRAFFIC
The main focus of...
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security & quality of service in ad hoc wireless networks
Ngày tải lên :
25/03/2014, 12:07
... 1 02
5.8 Further reading 105
5.9 References 106
6 Quality of service 107
6.1 Introduction 107
6 .2 Routing in mobile ad hoc networks 110
6 .3 Routing with quality of service constraints 1 12
6.4 Quality ... independent.
1.5 Quality of service
All the vulnerabilities enumerated in Section 1 .3 above are potential sources of
service impairment in ad hoc networks and hence may degrade the ‘ quality of
service ’ ... associated with providing quality of service (QoS)in
ad hoc networks. It should be pointed out that security and quality of service
are two distinct attributes that are independent of each other in general....
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báo cáo hóa học: " Fatness and fitness: how do they influence health-related quality of life in type 2 diabetes mellitus?" docx
Ngày tải lên :
18/06/2014, 19:20
... percentage of body fat (SD), % 38 .2 (9 .2) 36 .0 (7.1) 0.068
Mean VO
2
peak (SD), mL/kg·min 24 .1 (5.1) 21 .2 (5.1) < 0.001
Mean total cholesterol level (SD), mg/dL 21 5 .2 (37 .5) 178.8 (40 .2) < ... 86.4 ( 13. 5) 85.6 (14 .2) 0.656
Role emotional 87.7 (24 .5) 84.7 (28 .8) 0.411
Role physical 89 .3 (20 .0) 82. 8 (29 .1) 0.055
Social function 93. 3 ( 12. 9) 89 .3 (18.8) 0.066
Vitality 68.8 (16.1) 63. 5 (19.5) ... health - 12. 84 < 0.001
Mental health -1.84 0 .38 8
Physical function -1 .28 0.5 72
Role emotional -4.86 0 .25 9
Role physical -8.61 0. 035
Social function -2. 83 0 .28 2
Vitality -5.48 0.0 62
Physical...
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Báo cáo hóa học: " Quality of service implications of power control and multiuser detection-based cross-layer design" docx
Ngày tải lên :
21/06/2014, 03:20
... Communications. 23 (5):1067–1084 (20 05)
2. IWH Ho, SC Liew, “Impact of Power Control on Performance of IEEE 8 02. 11
Wireless Networks”. IEEE Trans on Mobile Computing. 6(11): 124 5– 125 8
(20 07)
3. S Toumpis, ... loads in Figure
12. While for an offered traffic of 3 Mbit/s all schemes
achieve similar good fairness va lues, for high traffic
0 1 2 3 4 5 6 7 8
0
0.05
0.1
0.15
0 .2
0 .25
0 .3
0 .35
0.4
0.45
0.5
Aggregate ... 5(8) :22 28 22 41 (20 06)
4. S Verdu, Multiuser Detection. (New York, NY: Cambridge University Press,
1998)
5. S Verdu, Computational Complexity of Optimum Multiuser Detection”.
Algorithmica. 4 (3) :30 3 31 2...
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Quality of Service and Resource Allocation in WiMAXFig Part 1 pdf
Ngày tải lên :
21/06/2014, 05:20
...
1 /2
QPSK
1 /2
QPSK
3/ 4
16-QAM
1 /2
16-QAM 3/ 4 64-QAM 2/ 3 64-QAM 3/ 4
1/ 32 2. 92 5. 82 8. 73 11.64 17.45 23 .27 26 .18
1/16 2. 82 5.65 8.47 11 .29 16.94 22 .59 25 .41
1/8 2. 67 5 .33 8.00 10.67 16.00 21 .33 ... Table
26 6 of IEEE 8 02. 16e amendment of the standard (Aymen & Loutfi, 20 08).
Modulation Codification rate SNR(dB)
BPSK 1 /2 3. 0
QPSK
1 /2 6.0
3/ 4 8.5
16QAM
1 /2 11.5
3/ 4 15.0
64QAM
2/ 3 ... 21 .33 24 .00
1/4 2. 40 4.80 7 .20 9.60 14.40 19 .20 21 .60
Table 3. Data rates for different MCSs and G values (Nuaymi, 20 07).
As it can be seen in the Table 3, the highest order modulations offer...
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Quality of Service and Resource Allocation in WiMAXFig Part 5 pdf
Ngày tải lên :
21/06/2014, 05:20
... Journal Vol.
15, No. 4, pp. 576-5 83.
Quality of Service and Resource Allocation in WiMAX
100
0
500
1000
1500
20 00
25 00
30 00
35 00
30 0 800 1400 1900 24 00 29 00 34 00
Throughput
Traffic Load
UGS
... on ICC, pp. 36 3 _36 8 Vol. 1.
[18] Nortel Networks,Introduction to quality of service (QoS)(September 20 08), Nortel
NetworksWebsite, 20 03. [Online]. Accessed on 1st of September 20 08.
[19] C.F. ... (Dynamic Service Addition)
,
and DSC (Dynamic
Service Change). The implemented PHY is OFDM.
Lot size(byte) Channel coding modulation
108 3/ 4 64-QAM
96 2/ 3 64-QAM
36 3/ 4 QPSK
24 1 /2 QPSK...
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Quality of Service and Resource Allocation in WiMAXFig Part 6 pot
Ngày tải lên :
21/06/2014, 05:20
... Investigation
5
11
0 0 .2 0.4 0.6 0.8 1
12
14
16
18
20
22
24
26
28
30
32
P
WiFi
TCP level perceived throughput [Mb/s]
WLAN and WiMax, simulation
WLAN and WiMax, analitical
Fig. 3. TCP layer throughput ... and its evolutions have been included as
part of 3GPP specifications ((3GPP-TS- 43. 318, 20 07) and (3GPP-TR- 43. 9 02, 20 07)) to enable
the integration of cellular technologies and other RATs.
It appears ... 54(6) : 131 0–1 32 2 .
128
Quality of Service and Resource Allocation in WiMAX
Downlink Resource Allocation and Frequency Reuse Schemes for WiMAX Networks 19
In M. Pischella & J C. Belfiore (20 09),...
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Quality of Service and Resource Allocation in WiMAXFig Part 7 doc
Ngày tải lên :
21/06/2014, 05:20
... corrigendum 1, IEEE Std 8 02. 16e -20 05 and IEEE Std
8 02. 16 -20 04/Cor 1 -20 05 (Amendment and Corrigendum to IEEE Std 8 02. 16 -20 04) pp. 1
– 822 .
IEEE8 02. 21 (20 10).
URL: http://www.ieee8 02. org /21 /
Iyengar, J., ... interval I
1
=[0, 11 .2[ dB.
2.
(
1
2
,64QAM) corresponds to the SNR interval I
2
=[11 .2, 22 .7] dB.
3.
(
3
4
,64QAM) corresponds to the SNR interval I
3
= ]22 .7, +∞[ dB.
Note that the
(
3
4
,64QAM) modulation ... Performance Investigation
6
13
User position/behavior WiFi only WiMAX only Smooth
Tx/Qu
1 Still, near the PoA 18. 53 12. 76 32 . 37
2 Still, 30 m far from the PoA 3. 81 12. 76 16.40
3 Moving away at 1 m/s,...
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Quality of Service and Resource Allocation in WiMAXFig Part 8 ppt
Ngày tải lên :
21/06/2014, 05:20
... 15 20 25 30 35 40
0
50
100
150
20 0
25 0
30 0
35 0
400
Number of SSs (N)
Variance of packet delay (ms ^2)
analysis W=8
simulation W=8
analysis W=16
simulation W=16
analysis W= 32
simulation W= 32
(b) ... W=8
analysis W=16
simulation W=16
analysis W= 32
simulation W= 32
(b) Mean services time of REQs
0 5 10 15 20 25 30 35 40
0
5
10
15
20
25
30
Number of SSs (N)
Mean packet delay (ms)
analysis ... W=8
analysis W=16
simulation W=16
analysis W= 32
simulation W= 32
(d) Variance of packet delay
0 5 10 15 20 25 30 35 40
0 .2
0 .25
0 .3
0 .35
0.4
0.45
0.5
0.55
0.6
0.65
Number of SSs (N)
Traffic load ( ρ)
analysis...
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