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TCP: retransmission scenarios Host A timeout Seq=92, 8 bytes of data X Host B ACK=100 Seq=92, 8 bytes of data ACK=100 lost ACK scenario Host A SendBase=92 timeout SendBase=100 SendBase=120 SendBase=120 Seq=92, 8 bytes of data Seq=100, 20 bytes of data ACK=100 ACK=120 Seq=92, 8 bytes of data Host B ACK 120 premature timeout send cumulative ACK for 120 ↑

TCP: retransmission scenarios Host A timeout Seq=92, 8 bytes of data X Host B ACK=100 Seq=92, 8 bytes of data ACK=100 lost ACK scenario Host A SendBase=92 timeout SendBase=100 SendBase=120 SendBase=120 Seq=92, 8 bytes of data Seq=100, 20 bytes of data ACK=100 ACK=120 Seq=92, 8 bytes of data Host B ACK 120 premature timeout send cumulative ACK for 120 ↑

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Can anyone explain why there is a timeout in 2n diagram (the right one) eventhough nothing got lost? what is the concept of timeout in simple words????

CP: retransmission scenarios Host A 14 timeout Seq=92, 8 bytes of data X Host B 11:35 / 14:19 ACK=100 Seq=92, 8 bytes of data ACK=100 lost ACK scenario Host A SendBase=92 timeout SendBase=100 SendBase=120 SendBase=120 Seq=92, 8 bytes of data Seq=100, 20 bytes of data ACK=100 ACK=120 Seq=92, 8 bytes of data. ACK=120 Host B II premature timeout CC HD send cumulative ACK for 120 ↑
Transcribed Image Text:CP: retransmission scenarios Host A 14 timeout Seq=92, 8 bytes of data X Host B 11:35 / 14:19 ACK=100 Seq=92, 8 bytes of data ACK=100 lost ACK scenario Host A SendBase=92 timeout SendBase=100 SendBase=120 SendBase=120 Seq=92, 8 bytes of data Seq=100, 20 bytes of data ACK=100 ACK=120 Seq=92, 8 bytes of data. ACK=120 Host B II premature timeout CC HD send cumulative ACK for 120 ↑
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