On 16-May-07 22:28:13, Adam Bower wrote:
On Wed, May 16, 2007 at 11:14:25PM +0100, Ted Harding wrote:
Not much has changed: the cable to C has been plugged into a different hub, with a different cable (5m instead of 1m).
Do you really mean hubs? or are they switches?
Now that you ask -- they are described as switches. Sorry to have been sloppy about this.
and are they all 100 meg hubs or 10 meg hubs?
This may be the crucial hint. In the diagram of the current topology:
ADSL---Modem | Hub_1----------------A [at which I sit] | | 5 metres | +-----------------C | 10 metres| | | | 1 metre Hub_2----------B
(still calls them "Hubs", but never mind), "Hub_2" is a 5-port which (IIRC) claims that each port can independently negotiate its rate with whetever its connected to. There is no such claim for "Hub_1". Now: Machines A and B have 100BaseT capable cards, while C (the one I moved from "Hub_2" to "Hub_1") only has a 10BaseT (the basic reason for this is that the Linux on C is so old that its drivers do not support more recent cards, not even 3C589, and it's using an 8390 driver).
So a possible explanation is that A is working at 100mps, and C is working at 10mbs, and both are plugged in to a switch whose separate ports are not independently adaptable; whereas previously B and C were plugged in to a switch where one port could handle the 100mbs and the other could handle the 10mbs.
and are they all indicating that everything is plugged in at 100 meg?
I don't know -- how can one tell?
Thanks for the response! Ted.
-------------------------------------------------------------------- E-Mail: (Ted Harding) Ted.Harding@manchester.ac.uk Fax-to-email: +44 (0)870 094 0861 Date: 17-May-07 Time: 07:56:16 ------------------------------ XFMail ------------------------------