The problem is with the autonegotiate protocol.  If you set the switch
to 100MB full and the client to 100MB full you should have no problems.
For some reason the autonegotiate on the switch thought the port was
running at Half duplex.  When you changed the client, the client and the
switch were in sync and the transfer went smoothly.

Denny    


-----Original Message-----
From: David Precht [mailto:[EMAIL PROTECTED] 
Sent: Thursday, April 03, 2003 9:47 AM
To: NT 2000 Discussions

What OS on the server? on the desktops?
--- "Lum, David" <[EMAIL PROTECTED]> wrote:
> The scenario:
> 
> 100Mbit copper Ethernet. 
> Single Dell PowerEgde 4400 w/ integrated Intel NIC.
> Linksys EF4124 10/100 full duplex, auto MDI/MDI-X
> switch.
>
http://www.linksys.com/products/product.asp?grid=35&scid=39&prid=473
> 
> The latest desktops [1] are Dell GX240's/260's with
> integrated 100Mbit NIC's
> and I manually set them to 100Mbit full duplex (same
> as the server).
> 
> A user has been complaining about slow LAN access
> ever since getting a new
> Dell GX260 desktop. Copying a 14MB file to the
> desktop took 20 seconds.
> Going to another PC (GX240) it takes about 2
> seconds. Installing the latest
> drivers on the 260 didn't fix the problem, but
> changing it from full duplex
> to half duplex did.
> 
> Any ideas why this fix worked? I double checked the
> GX240 and it's set to
> full duplex. Could the switch be the problem? Why
> would some PC's "prefer"
> half duplex over full? Could it be the cheap switch?
> 
> Dave Lum - [EMAIL PROTECTED]
> Sr. Network Specialist - Textron Financial
> 503-675-5510
> 
> [1] PC's bought in the last year
> 
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