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+ | # Assured Forwarding | ||
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+ | Assured Forwarding (AF) is a mechanism for assurance of delivery, given a defined rate. | ||
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+ | In case of congestion, traffic that exceeds the rate have a higher probability of being dropped. | ||
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+ | The four AF classes have the same priority. For each class, packets are given a drop probability. | ||
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+ | ^ Drop probability ^ Class 1 ^ Class 2 ^ Class 3 ^ Class 4 ^ | ||
+ | | Low | AF11 | AF21 | AF31 | AF41 | | ||
+ | | Medium | AF12 | AF22 | AF32 | AF42 | | ||
+ | | High | AF13 | AF23 | AF33 | AF43 | | ||