DUPACK

AcronymDefinition
DUPACKDuplicate Acknowledgement
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References in periodicals archive ?
If l < N when a packet loss is detected via three dupacks, TCP CERL assumes the loss to be random rather than congestive.
When the sender receives three dupacks, TCP NewJersey checks whether the received ack has CW mark or not.
The sender keeps some Variables to store the expected number of dupacks for a packet loss.
The key idea behind DDLRP [14] is to use the flight size information in order to set a dynamic threshold value when the sender receives three dupacks for detecting the retransmission loss.
As we mentioned in Section 2, if TCP detects packet loss via three dupacks, the sender immediately triggers the fast retransmission algorithm and then follows the fast recovery algorithm for recovering the lost packets.
As we explained before, when the sender receives three dupacks, it invokes fast retransmission algorithm and retransmits the lost packet.
Upon receiving three dupacks by packets 2 to 4, the sender invokes the fast retransmission algorithm and retransmits the lost packet and then enters into fast recovery.