Effect
The recipient of traffic that has been policed will observe packet loss distributed throughout periods when incoming traffic exceeded the contract. If the source does not limit its sending rate (for example, through a feedback mechanism), this will continue, and may appear to the recipient as if link errors or some other disruption is causing random packet loss.
With reliable protocols, such as TCP as opposed to UDP, the dropped packets will not be acknowledged by the receiver, and therefore will be resent by the emitter, thus generating more traffic.
The received traffic, which has experienced policing en route, will typically comply with the contract, although jitter may be introduced by elements in the network downstream of the policer.
Read more about this topic: Traffic Policing
Famous quotes containing the word effect:
“It has never been in my power to sustain ... I can pass swiftly from one effect to another, but I cannot fix one, and dwell on it, with that superb concentration which seems to me the special attribute of the tragic actress.”
—Ellen Terry (1847–1928)
“We are such docile creatures, normally, that it takes a virus to jolt us out of life’s routine. A couple of days in a fever bed are, in a sense, health-giving; the change in body temperature, the change in pulse rate, and the change of scene have a restorative effect on the system equal to the hell they raise.”
—E.B. (Elwyn Brooks)
“Reckoned physiologically, everything ugly weakens and afflicts man. It recalls decay, danger, impotence; he actually suffers a loss of energy in its presence. The effect of the ugly can be measured with a dynamometer. Whenever man feels in any way depressed, he senses the proximity of something “ugly.” His feeling of power, his will to power, his courage, his pride—they decline with the ugly, they increase with the beautiful.”
—Friedrich Nietzsche (1844–1900)