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* Small MSS values will reduce or eliminate IP fragmentation, but will result in higher overhead.
* For most computer users, the MSS option is established by the operating system.
== TCP SACK ==
Source: [http://packetlife.net/blog/2010/jun/17/tcp-selective-acknowledgments-sack/ packetlife.net]
<div><ul>
<li style="display: inline-block;"> [[File:TCP_retransmission.jpeg|thumb|none|300px|TCP Retransmission with ACK]] </li>
<li style="display: inline-block;"> [[File:TCP_SACK.jpeg|thumb|none|350px|TCP SACK]] </li>
<li style="display: inline-block;"> [[File:wireshark_SACK.png|thumb|none|400px|Wireshark PCAP]] </li>
</ul></div>
Packet Capture:
[[Media:TCP_SACK.cap|TCP SACK Sample Capture]]
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= ECN =
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