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Home > Archive > alt.certification.network-plus > July 2002 > Bottlenecks
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| We just got a 10 meg fibre line installed. I've been doing some testing and
am having problems.
When doing uploads only we get good speeds, and downloads only we get good
speeds. However when trying uploads and downloads at the same time or
upload speed drops by 50%.
Our ISP has suggested the problem is the NIC. we have the fibre coming
into the ISP provided converter and then connected directly to the
workstation for testing. We were told that a "workstation" NIC is not
suitable and we should upgrade it to a "server" NIC. The NIC is a 3Com
TC905B 10/100 NIC.
Could the workstation itself, or another part of it be the bottleneck? It
is a sub 800MHz single CPU workstation with 256MB RAM and 20GB 7200 RPM hard
drive running Windows 2000 Pro.
The ISP is being less than helpful, especially considering the monthly
charge of over $600 CDN.
Any insight appreciated.
TIA
Rod
A+, Network+, MCP
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| Timothy A. Freeland 2002-07-25, 10:25 am |
| One thing to check. Are both ends running in full-duplex mode?
Tim, A+
"RodB" <rbuike@shaw.ca.remove> wrote in message
news:amq%8.37491$Ag2.1936430@news2.calgary.shaw.ca...
> We just got a 10 meg fibre line installed. I've been doing some testing
and
> am having problems.
>
> When doing uploads only we get good speeds, and downloads only we get good
> speeds. However when trying uploads and downloads at the same time or
> upload speed drops by 50%.
>
> Our ISP has suggested the problem is the NIC. we have the fibre coming
> into the ISP provided converter and then connected directly to the
> workstation for testing. We were told that a "workstation" NIC is not
> suitable and we should upgrade it to a "server" NIC. The NIC is a 3Com
> TC905B 10/100 NIC.
>
> Could the workstation itself, or another part of it be the bottleneck? It
> is a sub 800MHz single CPU workstation with 256MB RAM and 20GB 7200 RPM
hard
> drive running Windows 2000 Pro.
>
> The ISP is being less than helpful, especially considering the monthly
> charge of over $600 CDN.
>
> Any insight appreciated.
>
> TIA
>
> Rod
> A+, Network+, MCP
>
>
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