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| Over-Subscription |
| ServiceQ® can continue to meet bandwidth guarantees even with a high degree of oversubscription (3:1 and higher) because link bandwidth is only reserved for those flows that are actively generating traffic. If a CBR or CIR flow becomes idle, then its bandwidth is taken away and can be used by other flows. |
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| User activity while doing web surfing for example, alternates between periods of activity interspersed by silence, which allows ServiceQ to quickly and efficiently swap users in and out of the reserved bandwidth class, while giving each of them their guaranteed rate when they are active. For example, if a user spends 5 seconds downloading a web page (which average about 20 Kbytes), and then spends the next 30 seconds reading it, then the system reserves bandwidth for him for only the 5 seconds that he is actually transferring the data. The rest of the time, his bandwidth can be used by other active users. |
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