pls help about mtu setting

William Herrin bill at herrin.us
Thu Jun 17 08:36:00 CDT 2010


On Thu, Jun 17, 2010 at 8:19 AM, Deric Kwok <deric.kwok2000 at gmail.com> wrote:
> My DSL company asks me to set the modem 146 2 and my old company used 14 92
> Why it is not standard 1 500?

Because they're wrapping your packet inside another packet that they
then transmit on a line with a 1500 byte MTU. The header on their
packet needs a few bytes, so you can't have them.

Regards,
Bill Herrin




-- 
William D. Herrin ................ herrin at dirtside.com  bill at herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004




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