Maximum segment lifetime is the time a TCP segment can exist in the internetwork system. It is arbitrarily defined to be 2 minutes long.
The Maximum Segment Lifetime value is used to determine the TIME_WAIT interval (2*MSL)
The command that can be used to many Unix systems determine the TIME_WAIT interval is:
ndd -get /dev/tcp tcp_time_wait_interval60000 (60 seconds) is a common value.
On most linux systems, this value can be checked by the command below:
sysctl net.ipv4.tcp_fin_timeoutOr simply view the file in /proc:
cat /proc/sys/net/ipv4/tcp_fin_timeoutFamous quotes containing the words maximum and/or lifetime:
“I had a quick grasp of the secret to sanity—it had become the ability to hold the maximum of impossible combinations in one’s mind.”
—Norman Mailer (b. 1923)
“Both cultures encourage innovation and experimentation, but are likely to reject the innovator if his innovation is not accepted by audiences. High culture experiments that are rejected by audiences in the creator’s lifetime may, however, become classics in another era, whereas popular culture experiments are forgotten if not immediately successful. Even so, in both cultures innovation is rare, although in high culture it is celebrated and in popular culture it is taken for granted.”
—Herbert J. Gans (b. 1927)