More important (for these purposes) is what is between you and the server, John. Hubs are half-duplex devices, whereas switches are (usually) auto-sensing. Olde
r hardware, however didn't always implement full duplex in the same manner, so it's possible that a single device can cause a packet storm due to dropped packet
s, affecting (or effecting, as it were) the entire network. Better switches should detect such things and partition the errant client, but this may not be relia
ble, even with newer hardware.
Good troubleshooting steps:
1. Check the obvious (bad patch cable(s), jacks, power, etc.). don't overlook some unrelated software which may be stealing CPU cycles, either.
2. Isolate the client with the worst problem (if possible).
3. Disconnect the rest of the stations (or power them off).
4. Lock the server and the workstation at 10Mbps half duplex and observe.
5. If all goes well with #4, the bump both to 100Mbps half duplex and observe.
6. Assuming #5 goes well, drop back to 10Mbps and switch to full duplex.
7. If #6 works without incident, go to 100/full on both, and finally auto.
Soft cable faults can be difficult to find. Adapters set to auto can drop a lot of packets just switching back and forth between full and half duplex, whereas l
ocking them down to half may result in better all around performance.
HTH
--
Lewis
------------------------------------
Lewis G Rosenthal, CNA, CLE, CLP
Rosenthal & Rosenthal, LLC
Accountants / Network Consultants
New York / Northern Virginia www.2rosenthals.com
eComStation Consultants www.ecomstation.com
Novell Users International www.novell.com/linux/truth
Sent via Profimail under Symbian OS.
------- Original message -------
From: Sam Lewis <os2-wireless_users@2rosenthals.com>
Sent: 9.8.'06, 10:59
> Mine always auto adjusts just fine. I move between 10Mb and 100Mb both
> at home and work.
> Sam
>
> John Poltorak wrote:
>
> >Apologies for another non-wireless problem, but it's about OS/2 networking
> >so is partially on-topic...
> >
> >Can anyone suggest where I should look to discover how to deal with
> >timeouts on a network connection?
> >
> >It appears between a DELL laptop which has a Broadcom chip and an IBM
> >server using an IBM ethernet card. The IBM server is accessible from other
> >systems but all those systems are limited to 10Mbps. Do I need to set the
> >DELL to 10 Mbps or will it autoadjust?
> >
> >And is there any way to log errors?
> >
> >
> >
> >
>
>
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