How to change RWIN and MTU?

[dagwoood]

Another newbie question :blush:

Is it possible to change my RWIN and MTU values from within Linux(Linspire Five-0)?

Cheers, dagwoood.

[scuzzman]

MTU use this command as root:

ifconfig ETH MTU SIZE

Replace ETH with your ethernet device (probably eth0)

Replace SIZE with the MTU size.

For your RWIN, execute these commands, or save them as a script and execute it as root:

echo 1 > /proc/sys/net/ipv4/tcp_timestamps
echo 1 > /proc/sys/net/ipv4/tcp_window_scaling
echo 1 > /proc/sys/net/ipv4/tcp_sack

This simply optimizes it, it does not specifically set it. I'm not sure how to do that, and Google isn't giving any relevant results for your distro of choice. Note: This will reset on reboot. In order for this to become permanent, you need to put those three commands in your system initialization scripts (the scripts that run on startup - again, no idea...)

You might try

man ifconfig

to see if it includes an ability to change RWIN...

Hope this helps :)

[dagwoood]

Thanks for that scuzzman and I'm sorry I didn't get back to this thread earlier :blush:. I'll give the above a try.

Cheers, dagwoood.