principles of network and system administration phần 2 pot

... sites of Nortel Networks (20 02a) and (20 02b). The concepts of network service layering and quality of service are covered in the classic networking textbooks of Walrand (1998), Walrand and Varaiya ... demand and resource availability. The 24 NETWORK SERVICES AND CONTRACTS related to contracts for network services, focusing on issues of quality of service and p...

Ngày tải lên: 14/08/2014, 12:20

... state of the system in terms of the active traffic contracts and a history of load measurements, should a new traffic contract of type i be admitted? 72 NETWORK TECHNOLOGY (a) (c) (d) (b) R 1 R 2 R 3 R 4 leased ... minimum of linear functions of x,the right-hand side of (4.11) defines a concave function of x and so each A t is the complement of a convex set (refer t...

Ngày tải lên: 14/08/2014, 12:20

Ngày tải lên: 14/08/2014, 12:20

... . . . . . . 28 7 12. 6FurtherReading 29 0 13 Regulation 29 1 13.1InformationIssuesinRegulation 29 2 13.1.1 APrincipal-agentProblem 29 2 13.1 .2 AnAdverseSelectionProblem 29 6 13 .2 Methods of Regulation ... 27 9 12. 1TheMarketStructure 27 9 12. 1.1 PeeringAgreements 27 9 12. 1 .2 Interconnection Mechanisms and Incentives . . . . . . . . . . . . . 28 1 12. 1.3 Interconnec...

Ngày tải lên: 14/08/2014, 12:20

... effective bandwidth approximations of the constraints X j2J 1 x j Þ j .s 1 ; t 1 / Ä K 1 and X j2J 1 [J 2 x j Þ j .s 2 ; t 2 / Ä K 2 (4.18) 110 NETWORK CONSTRAINTS AND EFFECTIVE BANDWIDTHS A ... utilities and the cost functions of the consumers and the 1 02 NETWORK CONSTRAINTS AND EFFECTIVE BANDWIDTHS 0 0.5 1 1.5 2 t (secs) 0.0001 0.001 0.01 0.1 1 s(kb −1 ) 0 0.5...

Ngày tải lên: 14/08/2014, 12:20

... example, if n D 2, and the elasticities are constant, with values of ž 1 D 2, ž 2 D 5and 12 D3, then we can easily calculate that p 1 <@c=@ x 1 and p 2 >@c=@ x 2 . As an illustration of this, ... level, x 2 , to maximize px 2  x 2 2 , giving x 2 D p =2. Firm 1 sees residual demand of 1  3p =2. One can check that he maximizes his profit by taking p D 8=15...

Ngày tải lên: 14/08/2014, 12:20

... at least p 0 2 ,wherep 0 2 D Þ 0 2 c > p 2 and Þ 0 2 is the effective bandwidth of type 2 customers when a network has only customers of this type. At this point, even the type 2 customers ... an effective bandwidth of 1 kbps and a mean rate of 1 =2 kbps. Let x denote the sum of the effective bandwidths of all type 1 traffic. Let y denote the sum of the me...

Ngày tải lên: 14/08/2014, 12:20

... p/  W 2m p Ð T=W D m T 2 .1  p/  x 2 2m p Motivated by this calculation, we can model MulTCP by the system of differential equations d dt x r .t/ D m r T 2 r   m r T 2 r C x r .t/ 2 2m r à X j: ... trading of international wholesale telecoms minutes and bandwidth, see Band-X (20 02) . Approaches for charging differentiated services can be found in Paschalidis and Tsit...

Ngày tải lên: 14/08/2014, 12:20

... if 2v B  2 > 2v A  1and2 v B  2 > 0, i.e. if and only if v B  v A > 1=2andv B > 1; so the lower bidder can sometimes win. For example, if v A D 0:8andv B D 1 :2, then A wins and ... backbone), and specifically the faq on Dark Fibre, see CA*net (20 02) . For information on the Stockholm municipal fibre network see Stokab (20 02) , and for the Chicago CivicNet see Ci...

Ngày tải lên: 14/08/2014, 12:20

... compatibility and, 20 4, 21 2 pricing and, 196, 20 4 elastic application, 32, 39, 23 5, 23 6 elastic user, 23 6 elasticity, 118, 119 elevator analogy, 87, 90 end-to-end principal, 7, 25 9 end-user, ... services, 32, 33 charging of, 195, 21 8 header, of packet, 44 hidden action asymmetry, 29 2 hidden information asymmetry, 29 2 historic cost, 180, 190 hit -and- run entry, 168, 3...

Ngày tải lên: 14/08/2014, 12:20