If you mean -- both machines were XP...
I suspect this CHEAP Gigafast EZ500-S Ethernet switch is the culprit. I get better results
using a Linksys BEFSR81 SOHO Router connected to another SOHO Ethernet switch (two SOHO
switches connected together mean the latency is effectively doubled.) It think you would
get better results even using an auto-sensing 10/100 Mb/s hub such as a Netgear DS-104 (
4-port, ~$35.00 US) or Netgear DS-108 (8-port, ~$70.00 US).
I suggest you go out to your local; Staples, Circuit City, Office MAX, Office Depot, etc.
and pick up a name brand (such as; Linksys, DLink or Netgear) hub or Ethernet switch and
retest. If you get better results , as I suspect you will, return the Gigafast EZ500-S for
a refund.
Dave
| The transfer speed was stated in my previous posts. One transfer file
| size was 518 MB, it took over 10 minutes. Another transfer file was
| 4.5 GB in size, and that took 75 minutes. Transfer rate was unchanged
| with any of the setting, before or after replacing 10MB hub to that
| 100MB hub. The only thing changed, was that status display in XP.
|
|
|
| On Tue, 19 Oct 2004 20:28:09 -0400, "David H. Lipman"
|
| >Well it is an 100 Mb/s Ethernet switch and supports Full-Duplex. It doesnot specifically
| >state it supports N-Way negotiation albeit, it states "5x 10/100Mbps Auto-sensing RJ-45
| >ports".
| >
| >So, if you set both NICS to 100Mb/s Full-Duplex or "auto select" then I'd expect you to
have
| >a virtual 200Mb/s LAN between the two nodes. however, like most CHEAP, SOHO E-switches
(and
| >Routers w/E-switches like the Linksys BEFSR41) the latency measured in nanoseconds is NOT
| >specified. This can be inferred that they have a high latency like 100ns ~ 1 us. Good
| >switches are like 10ns~50ns. On large data transfers that delay factor really adds up.
| >
| >You stated "The network connection status for intranet shows it at 100Mbps (instead of
only
| >10Mbps) prior to all that change, YET, the transfer rate between the 2 network machines
has
| >not increased."
| >
| >The objective then becomes -- you need to quantify the data transfer rate from PC to PC.
| >Using both the 10Mb/s HUB and then by using this E-switch and using the same data set
copied
| >from PC-A to PC-B and timed for both transfers.
| >Let us see WHY you state you don't get 100Mb/s speeds.
| >
| >Dave
| >
| >
| >
| >
| >| >| It's a Gigafast "5 port network mini switch" EZ500-S. So instead of
| >| setting at 100 MB full duplex, I should set it to half duplex?
| >|
| >|
| >| On Mon, 18 Oct 2004 20:35:02 -0400, "David H. Lipman"
| >|
| >| >Well unless the device is an Ethernet switch, they should NOT be set to 100 Mb/s
| >| >Full-Duplex! When nodes are connected to a hub, all nodes are part of the same
collision
| >| >domain and collision detection *must* be enabled so if the device is truly, as you
| >posted, a
| >| >hub, you can set the NIC to "auto select" or 100 Mb/s Half-Duplex.
| >| >
| >| >What's the device model number ?
| >| >
| >| >Dave
| >|
| >
|
