Andrew Haninger wrote:
> On 2/25/07, George Metz <[EMAIL PROTECTED]> wrote:
>
>> This is almost certainly an issue of half vs. full duplex. The only
>> reason a hub would cause a problem is if you were using a hub to connect
>> the router and the cablemodem. If the cablemodem is directly connected
>> to the LEAF box, you should have no collisions at all showing up,
>> because the SB4200 is usually capable of 100BaseTX Full Duplex.
>>
George is correct. I saw a similar issue with my business's switch. It
was set to force 100M Full duplex and the cards on the machines were set
to auto. They weren't switching to Full Duplex so while everything
worked, it was slow and very heavy with errors....specifically overruns
and collisions. Once I set the cards to match, there are very few (VERY
few, a few dozen per 10M of traffic)
> Here's my structure:
>
> {Internet}-SB4200-3c509-LEAF-3c509-3Com 10/100 Hub-WinXP
>
> The SB4200 is directly connected (via Cat 5) to the LEAF box. The
> 3c509B's default to half-duplex. When I use ethtool to force them to
> full (eth0 and eth1) the speeds are no different.
>
>
So what was the output to the ip -s command? Without this, you're
assuming there's no difference.
Did you boot into a DOS environment and check the cards with the 3com
program?
>> Speaking of which, check your provider's top available speeds.
>>
> I'm with RoadRunner in the central Ohio area. I've just spent maybe 10
> minutes browsing their site and I'm unable to find their listed top
> speed. However, I'm fairly certain that it is only 5Mb/s. That is
> around the speed I got on the speed tests when I connected the modem
> to my laptop.
>
> As far as I know, my 3c509B's should be able to easily handle those speeds.
>
> Andy
>
Did you try dslreports.com to check what your neighbors might have
reported for their speeds?
They also have a speed test available in their tools section.
Make one change, then test, then another, then test.
Record the results so you can be sure of what's happening.
Don't rely on your memory.
Good Luck,
Tony
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