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

[David Petruzzella]

---------- Original Message ----------------------------------
From: Ric Moore <wayward4now at gmail.com>
Reply-To: CentOS mailing list <centos at centos.org>
Date:  Tue, 09 Sep 2008 14:56:58 -0400

>
>On Mon, 2008-09-08 at 23:46 -0600, Joseph L. Casale wrote:
>> >I have a server with dual nic's running centos 5.2 1 nic connects to the
>> >cable modem, which has 15m d and 2m up, but speed tests barely come back at
>> >5mb down including road runner's internal speed test. I hook up my laptop to
>> >the same modem, same port, using the same cable and I get 17mb down. I have
>> >ruled out iptables, nics (because same result on both nics), cables, cable
>> >modem(with a brighthouse rep) any suggestions would be greatly appreciated.
>> >Thanks.
>> 
>> So I gather the nics aren't teamed from your wording, maybe MTU is set sub
>> optimal for your particular ISP? What OS on your laptop? Wrong MTU can have
>> a significant effect such as this.
>
>"Back in the day..." there used to be a utility that would test your
>connection for the optimal MTU setting. Is there something like that for
>Linux?? Ric
>
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I got my information about the MTU setting from doing google searches and the message boards on broadband reports as well as doing the tweak test on broad band reports.
 




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