100BT connection transfering at 10BT

  • Thread starter Thread starter namsilat
  • Start date Start date
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namsilat

I replaced my 10BT hub to a 10/100BT hub, then I replaced my CAT5
cables with CAT5e cables. 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. It's going at less than 1 MB of transfer per minute, takes
more than 1 hour to transfer a 4 GB file. That's the EXACT same slow
speed prior to me changing anything. I am not talking about download
speed from internet, I am just looking at the pure transfer speed
between the two networked machines on this hub. I am also not
expecting a lightning 10 times faster transfer rate, but I expect at
least some increase of speed. Did I use the wrong cables? The hub is
obviously not the problem.
 
namsilat said:
I replaced my 10BT hub to a 10/100BT hub, then I replaced my CAT5
cables with CAT5e cables. 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. It's going at less than 1 MB of transfer per minute, takes
more than 1 hour to transfer a 4 GB file. That's the EXACT same slow
speed prior to me changing anything. I am not talking about download
speed from internet, I am just looking at the pure transfer speed
between the two networked machines on this hub. I am also not
expecting a lightning 10 times faster transfer rate, but I expect at
least some increase of speed. Did I use the wrong cables? The hub is
obviously not the problem.
Click to expand...

If you have a cable modem or DSL you are sharing using the hub, chances are
that you are transferring files through the Internet to your other machine,
not through the intranet.

Your original cables (CAT5) were fine.

Is it a hub or is it a switch or router?
Do you have "public" IPs on these machines or "private" IPs?
 
Both computers (source and destination) have a 10/100 Mb/s Ethernet NICs ?

Have you made sure the NIC is set to "auto select" for media type in the advanced properties
for the NIC in the Device manager on BOTH computers ?

Are the source and destination platforms the ONLY computers on the hub ?

Dave




| I replaced my 10BT hub to a 10/100BT hub, then I replaced my CAT5
| cables with CAT5e cables. 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. It's going at less than 1 MB of transfer per minute, takes
| more than 1 hour to transfer a 4 GB file. That's the EXACT same slow
| speed prior to me changing anything. I am not talking about download
| speed from internet, I am just looking at the pure transfer speed
| between the two networked machines on this hub. I am also not
| expecting a lightning 10 times faster transfer rate, but I expect at
| least some increase of speed. Did I use the wrong cables? The hub is
| obviously not the problem.
 
In Device Manager, Network Adapters - Your NIC may be set to use
AutoSense for speed. It's usually found under the Advanced options
(Tab). Simply toggle the setting to 100 Full-Duplex on each client PC.
 
ok I tried this and it didn't work. Funny how forcing the speed to be
at 100 still results in much slower speed.
 
On Sun, 17 Oct 2004 16:38:55 -0400, "David H. Lipman"
Yup both are and were previously set to "auto" for speed. I tried
suggestion from another poster and forced both to "100 full", but no
speed improvement. Those 2 machines are the only 2 machines on the
network.
 
btw, at 100BT, what should the transfer rate be like? I.e. how much
time would it be to transfer 1 GB of data over 100BT?
 
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




| On Sun, 17 Oct 2004 16:38:55 -0400, "David H. Lipman"
| Yup both are and were previously set to "auto" for speed. I tried
| suggestion from another poster and forced both to "100 full", but no
| speed improvement. Those 2 machines are the only 2 machines on the
| network.
|
|
| >Both computers (source and destination) have a 10/100 Mb/s Ethernet NICs ?
| >
| >Have you made sure the NIC is set to "auto select" for media type in the advanced
properties
| >for the NIC in the Device manager on BOTH computers ?
| >
| >Are the source and destination platforms the ONLY computers on the hub ?
| >
| >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?
 
namsilat said:
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?
Click to expand...

100/half is the safer setting.
Auto/Auto is generally ok.
 
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
|
 
I forgot to mention:

When you run the two tests either have the NICs both set to "Auto Select" or
When connected to the hub, both NICs set to 10MB/s Half-Duplex
When connected to the E-switch, both NICs set to 100Mb/s Full-Duplex

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.
 
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
| >|
| >
|
 
One machine is XP, while the other is Win98SE. Someone else also
suggested the hub is the problem. I think I will just return this.
 
What speed is the hub rated at? How about the NICs? The connection
will operate at the speed of the slowest link in the chain.
 
One machine is XP, while the other is Win98SE. Someone else also
suggested the hub is the problem. I think I will just return this.
Click to expand...

The problem is probably in yer configuration on the 98 machine. Its
not as intuitive as any of the NT's.


Have a nice one...

Trent

Budweiser: Helping ugly people have sex since 1876!
 

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