Network Theory - TCP operations - MSS

4 important questions on Network Theory - TCP operations - MSS

What is the abbreviation for MSS and what does MSS mean?

Maximum segment size

Specifies the largest amount of data in octets that a device can receive in a single TCP segment. 

It only includes TCP data, and does not include the TCP or IP header.

What is the default TCP MSS size for IPv6?

1220 bytes

How can a host change the MSS value?

It can be set in the tcp syn packet
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How can MTU be discoverd if ip unreachables are disabled?

By using the MSS value of tcp

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