Le Jeudi 13 Mars 2003 07:10, Thomas V. Fischer a écrit :
> I am not really having a problem but I am tryin got optimise my connection
> and make it work better.
>
> With ADSL connections one of the best things to do is to ensure that your
> MTU (ie the packet size on the network) is the same size as the permissable
> ATM frame. This avoids fragmentation of the pckets and therefore improves
> network connectivity.
>
> I know for a fact that my DSL provider needs an MTU set to 1452 (default on
> most systems/ethernet is 1500).
>
> I have changed the pppoe daemon settings in the config file and changed all
> the MTU values to 1452. But the pppoe daemon seems to ignore this and just
> leaves it at 1492.
>
> I finally got around it by adding "up ip link set [dev] mtu [size]"
> commands to the interfaces config file.

You can alternatively use the mtu parameter in the ifconfig file. i.e :
iface eth0 inet static
        address a.b.c.d
        masklen e
        broadcast  a.b.c.255
        mtu 1452

Jacques


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