This comes in handy when one jams a bunch of headers together but then constraints payload size which would result in frag/defrag and may lead to decreased throughput/performance.

ex: use case I think of would be user facing before encaps into maybe something like gnarly like gre inside ipsec facing Internet (where MTU can not be controlled is likely to be assumed =< 1500 ).

--
Regards,
Ge Moua
Univ of Minn Alumnus
--


On 02/11/2013 01:56 PM, Eric A Louie wrote:
I just put in this command on my upstream interfaces to help my mpls network
pass traffic - that is, my effort to eliminate fragmentation in my backbone.

Is anyone else using this method of "mtu control"?  I need some support - my CEO
is asking why I have to do this, and who else does it, and is it a common
practice, etc, so I'm looking for evidence, more than just "The Cisco TAC told
me to do it".

thanks

  Much appreciated, Eric
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