CISCO COMMAND ip tcp adjust-mss

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Can anyone explain the function of the following command,

#ip tcp adjust-mss
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Network Consultant
Commented:
Here are few docs that will help:
http://www.cisco.com/en/US/docs/ios/12_2t/12_2t4/feature/guide/ft_admss.html

Here is more specifically why its used:
http://www.cisco.com/en/US/tech/tk827/tk369/technologies_white_paper09186a00800d6979.shtml

Basically this is used to establish the max MTU size as packets traverse the network.   For example if you are running a vpn scenario, 1500 byte packets will get truncated as the the vpn takes up some overhead.  To prevent packets from being truncated you adjust the mtu for the largest allowable.  So if you are going over a vpn you might need to adjust the mtu size to 1340 or 1380 or something like that to keep packets from being truncated.
Steven CarnahanAssistant Vice President\Network Manager

Commented:
http://en.wikipedia.org/wiki/Maximum_segment_size for supplemental information about mss

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