Mạng và viễn thông P37

Containing Network Overload Network designers like think that their traffic models ideally stable, andthat their forecasts to are of future traffic will never be wrong.In real life, however, such assumptions are unwise, because any one of a number of problems may arise, resulting in network overload, and so congestion. The forecast may underestimate demand; there may be a short period of extraordinarily high pressure (for example at New Year, Christmas, or any public holiday, or following a natural disaster); or there may be a network link switch (exchange) failure. ...