[CentOS] Re: Need help with an odd issue I am experiencing

Scott Silva ssilva at sgvwater.com
Tue Sep 9 19:22:53 UTC 2008


on 9-9-2008 11:40 AM Joseph L. Casale spake the following:
>> Not a laptop it is a server with dual nics mtu set at 1500, 1 nic directly to the cable modem the other to my lan.
> 
> MTU has nothing to do with laptops, it has to do with TCP/IP.
> Aside from a previous posters duplex setting (good catch on his part) its
> possible that MTU is an issue. Some ISP's do some silly stuff. You
> *are* going into a cable modem (which I read as accessing the internet
> through some means other than a high-end fiber/etc connection where oddities
> wouldn't likely exist:>)
> 
> jlc
And many cable modems, especially if it is a few years old, are half-duplex. 
Autodetect doesn't always work on them, and they will drop packets enough to 
slow them down a lot.

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