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Old 01-20-2010, 08:34 AM   #1
Registered: Aug 2009
Distribution: linux
Posts: 527

Rep: Reputation: 51
Smile Home Network: solution found...i think

Just wanted to share a solution ( i think) to an issue i have seen people ( self included ) having with LAN transfer from win to linux on a local LAN. After doing alot of googleing and getting some refs to MTU settings, along with some other over thought solutions the culprit in my case was MTU.

It would appear that some routers ( ISP provided in particular ) have some rather funky MTU reqs. With linux the MTU path discovery seems to work....guess with XP it causes an issue ( would love some feedback here )? So, after running ping with a few diff packet sizes to see where the router boog up i got 1492( that INCLUDES the overhead ). Once i reset the MTU ON THE WIN BOX to 1492 and rebooted LAN speeds improved dramatically. No changes made to Linux box ( running over wireless g )

my network:
//WIN 7 laptop
//WIN XP desk
//Linux desk
all LAN speeds seem to be the same across all workstations now.

Code snippets for the win boxes:
###start with 1500 - 28 with frag turned off
ping -f -l 1472
the above will get you to your ideal MTU for your LAN. drop 1472 by 20 and raise by 2 until you hit your max MTU. since this is linuxquestions and NOT windowsquestions i will just assume that everyone can google the rest ( i.e: setting a value in regedit )

KEY POINT: turn OFF auto in the duplexing settings for the nic on the win box.

Hope this helps!!

Last edited by mrmnemo; 01-21-2010 at 07:03 PM. Reason: info on what i did
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Old 01-21-2010, 06:24 PM   #2
Registered: Aug 2009
Location: Oregon, USA
Distribution: Arch
Posts: 864
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You should have this moved to the Member Success Stories forum, that way it'll (hopefully) get more views.

Just hit "Report" and for the reason you can just put "move to [insert forum name here]" or something like that.
2 members found this post helpful.
Old 01-21-2010, 09:51 PM   #3
Registered: Aug 2009
Distribution: linux
Posts: 527

Original Poster
Rep: Reputation: 51
reported the thread and requested the move.. thanks

By the way, does that seem to be correct to you? Would putting the linux box to master increase the LAN speed more you think?
Old 01-21-2010, 09:53 PM   #4
Registered: Aug 2009
Distribution: linux
Posts: 527

Original Poster
Rep: Reputation: 51

Originally Posted by MrCode View Post
Sandwich comes out cd tray
Aint that cool? mine spits out easy women and tropical mike-n-ike's


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