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159 1 Introduction Introducing high capacity links in IP-based net- works, with differentiated QoS, allows delivery of services ...

increase over the critical limit resulting in a degradation of the quality. This negative multi- plexing effect will add on for ...

where we assume that μ 2 μ 1 (1 – ρ 1 ); and where is the unit step function. The corresponding result when the highest prior- i ...

0 -0.5 -1 -1.5 2 -2.5 -3 -3.5 Log[P(W>t)] 0.005 0.01 0.015 0.02 sec 0.025 0.03 0.035 0.04 0 -0.5 -1 -1.5 2 -2.5 -3 -3.5 Log[P ...

In the second example we have taken a slower link with capacity 0.5 Mbit/s. In this case we see that approximately one out of 10 ...

and with LTS. We denote Wpthe waiting time for a packet of priority class pand we denote the corresponding Distribution Function ...

4.2 Unsaturated Case with Batch Arrivals To avoid the negative effect from the lower pri- ority traffic on the high priority tra ...

θ+p-1(s) = Bg+,p-1(s+ λ+p-1– λ+p-1θ+p-1(s). Combining the two last equations yields the important relation: s= σp-1(s) – λ+p-1(1 ...

service times are negative exponentially dis- tributed with mean service times μp-1for priority class p. With these assumptions ...

From the last expression we also find the integral where If we assume that all the lower priority classes have negative exponent ...

Bibliography Awduche, D O. 1999. MPLS and Traffic Engi- neering in IP Networks. IEEE Communications Magazine,37 (12), 42–47. Jam ...

Telektronikk 2/3.2001 1 Introduction A network operator faced with supporting a range of services and users and being intercon- ...

the technical level. Means for negotiating and documenting terms in the SLAs/SLSs can be provided by the management systems. The ...

used to convey the information to the router on which DSCP to apply for each flow. This would particularly be useful in case IPS ...

4 Interconnection – Agree- ments, Brokering and A^3 4.1 SLS Negotiation Having the capability to establish SLAs rapidly, accurat ...

According to [ID_sfsls], the following principles should be obeyed when designing the SLS and corresponding negotiation process: ...

communicate with the user via Resource Alloca- tion Requests (RARs) to receive the request for bandwidth and to indicate success ...

To get access to a service, the user sends a ser- vice request to the AAA server. This checks the authorisation of the user and, ...

10, the network manager edits policies through a policy entry console. Those policies are then stored in a policy repository. Wh ...

of rules to be used, the rules have to be priori- tised (e.g. first-match, match all, priority order). The policy to apply to an ...