Side_1_360

39 1 Introduction A basic definition of Traffic Engineering (TE) is performance optimisation of operational net- works, includin ...

served, longer buffer sizes may apply as these would accept longer delays (and delay varia- tions), although the loss requiremen ...

Traffic management includes nodal traffic con- trol (e.g. traffic conditioning, queue manage- ment, scheduling) and other functi ...

lems is also how to optimise the performance of a network. Solving congestion is an essen- tial part of performance improvement. ...

ity. This may also initiate a network planning in order to improve network design, capacity, tech- nology, and element configura ...

lem (see Box A). Furthermore, the reservation information has to be conveyed between the routers. The Resource reSerVation Proto ...

4.1 Non-functional Requirements The generic non-functional requirements given in [ID_tepri] are: Usability. This is a human fac ...

Box C Resilience As the multitude of services on IP-based networks increases, a differentiation of dependability (e.g. reliabili ...

to client – server interactions. Hence, load bal- ancing directing traffic on the different servers may improve the overall perf ...

interval for collecting and returning the infor- mation. A similar trade-off is also seen for the distributed scheme, although t ...

6.2 Open Issues Related to QoS Architecture As the best effort service is the most commonly seen in most IP-based networks, a wi ...

differently by different networks along a path, leading to a vast number of options. Harmon- ising the service levels may result ...

The service concerns, involving control and management. Functionality both in the user’s equipment and in the provider’s domain ...

looking at portions of it, as is most common today. Policy-based management might well be applied, also accommodating the dynami ...

are harmonised and allow for mapping into others. Monitoring a QoS parameter could be done both “continuously” and by “sampling” ...

Telektronikk 2/3.2001 1 Introduction From the outset, one may say the Internet Proto- col (IP) was intended to transport informa ...

At the link level: retransmission policy, out- of-order buffering policy, acknowledgement policy, flow control policy. As seen ...

leaky bucket analogy refers to a bucket with a hole in the bottom that causes it to “leak” at a certain rate. Then more “fluid” ...

When the srTCM operates in colour-aware mode, arriving packets are considered to be pre- marked. Then, the marking must be more ...

sources to slow down. RED is mainly useful when the bulk of the traffic is TCP traffic. A potential consequence of RED is that U ...