March 2018
Intermediate to advanced
626 pages
17h 32m
English
book
Network Analysis Using Wireshark 2 Cookbook - Second Edition
by Nagendra Kumar Nainar, Yoram Orzach, Yogesh Ramdoss
Content preview from Network Analysis Using Wireshark 2 Cookbook - Second Edition
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What are TCP retransmissions and what do they cause?
When a packet acknowledgment is lost or when an ACK does not arrive on time, the sender will perform two things:
- Send the packet again, as described earlier in this recipe
- Decrease the throughput
In the next screenshot, we see an example of retransmissions that reduces the sender throughput (thin red lines added for clarity):
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