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For questions about Transmission Control Protocol (TCP), a transport protocol used to encapsulate data across a network for reliable communication.

2 votes

What is the difference between MSS and MTU?

MSS is Maximum TCP segment size. MTU is used for fragmentation i.e packet larger than MTU is fragmented.But in case of MSS, packet larger than MSS is discarded. … MSS is specified during TCP handshake basically in SYN and its value can't be changed after the connection is established. MSS=MTU-40(IP header(20 bytes) + TCP header(20 bytes) ) …
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